CN108046671A - A kind of rice hull ash concrete and preparation method thereof - Google Patents
A kind of rice hull ash concrete and preparation method thereof Download PDFInfo
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- CN108046671A CN108046671A CN201711470633.9A CN201711470633A CN108046671A CN 108046671 A CN108046671 A CN 108046671A CN 201711470633 A CN201711470633 A CN 201711470633A CN 108046671 A CN108046671 A CN 108046671A
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- concrete
- rice hull
- hull ash
- rice
- ash
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- 235000007164 Oryza sativa Nutrition 0.000 title claims abstract description 226
- 235000009566 rice Nutrition 0.000 title claims abstract description 226
- 239000004567 concrete Substances 0.000 title claims abstract description 202
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 240000007594 Oryza sativa Species 0.000 title 1
- 241000209094 Oryza Species 0.000 claims abstract description 225
- 239000002956 ash Substances 0.000 claims abstract description 196
- 239000000463 material Substances 0.000 claims abstract description 32
- 239000010881 fly ash Substances 0.000 claims abstract description 30
- 239000004568 cement Substances 0.000 claims abstract description 29
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 26
- 239000010703 silicon Substances 0.000 claims abstract description 25
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000004576 sand Substances 0.000 claims abstract description 10
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 9
- 239000004575 stone Substances 0.000 claims abstract description 8
- 239000010903 husk Substances 0.000 claims description 44
- 238000000227 grinding Methods 0.000 claims description 35
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 32
- 238000012360 testing method Methods 0.000 claims description 22
- 239000000203 mixture Substances 0.000 claims description 21
- 238000010438 heat treatment Methods 0.000 claims description 14
- 239000000377 silicon dioxide Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 238000001354 calcination Methods 0.000 claims description 3
- 239000004927 clay Substances 0.000 claims description 3
- 229910052681 coesite Inorganic materials 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 229910052906 cristobalite Inorganic materials 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 238000013401 experimental design Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 3
- 229910052682 stishovite Inorganic materials 0.000 claims description 3
- 229910052905 tridymite Inorganic materials 0.000 claims description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000292 calcium oxide Substances 0.000 claims description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 2
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 2
- 238000002050 diffraction method Methods 0.000 claims description 2
- 239000000395 magnesium oxide Substances 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 claims description 2
- 239000002480 mineral oil Substances 0.000 claims description 2
- 235000010446 mineral oil Nutrition 0.000 claims description 2
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 claims description 2
- 229910001950 potassium oxide Inorganic materials 0.000 claims description 2
- 229910001948 sodium oxide Inorganic materials 0.000 claims description 2
- 230000008093 supporting effect Effects 0.000 claims description 2
- 238000010348 incorporation Methods 0.000 description 30
- 238000007906 compression Methods 0.000 description 22
- 230000006835 compression Effects 0.000 description 21
- 238000011160 research Methods 0.000 description 12
- 238000011161 development Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 10
- 238000004458 analytical method Methods 0.000 description 9
- 239000002689 soil Substances 0.000 description 9
- 238000010276 construction Methods 0.000 description 8
- 239000004574 high-performance concrete Substances 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 6
- 239000002699 waste material Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 241000196324 Embryophyta Species 0.000 description 4
- 230000015271 coagulation Effects 0.000 description 4
- 238000005345 coagulation Methods 0.000 description 4
- 239000003245 coal Substances 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000004035 construction material Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- 239000000499 gel Substances 0.000 description 2
- 239000011372 high-strength concrete Substances 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 230000001976 improved effect Effects 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- TVXBFESIOXBWNM-UHFFFAOYSA-N Xylitol Natural products OCCC(O)C(O)C(O)CCO TVXBFESIOXBWNM-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000002154 agricultural waste Substances 0.000 description 1
- 230000002742 anti-folding effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 210000000349 chromosome Anatomy 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000005911 diet Nutrition 0.000 description 1
- 230000037213 diet Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000011507 gypsum plaster Substances 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- HEBKCHPVOIAQTA-UHFFFAOYSA-N meso ribitol Natural products OCC(O)C(O)C(O)CO HEBKCHPVOIAQTA-UHFFFAOYSA-N 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 150000002972 pentoses Chemical class 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 238000010517 secondary reaction Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 238000009955 starching Methods 0.000 description 1
- CCEKAJIANROZEO-UHFFFAOYSA-N sulfluramid Chemical group CCNS(=O)(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F CCEKAJIANROZEO-UHFFFAOYSA-N 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000000811 xylitol Substances 0.000 description 1
- HEBKCHPVOIAQTA-SCDXWVJYSA-N xylitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)CO HEBKCHPVOIAQTA-SCDXWVJYSA-N 0.000 description 1
- 229960002675 xylitol Drugs 0.000 description 1
- 235000010447 xylitol Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/10—Burned or pyrolised refuse
- C04B18/101—Burned rice husks or other burned vegetable material
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of rice hull ash concrete and preparation method thereof, the material component and weight of the rice hull ash concrete are：Cement 284 369, rice hull ash 21 64, flyash 21 64, silicon ash 12.7, sand 503.5, stone 977.4, water-reducing agent 2, water 195, the unit of the weight proportion is kg/m3。
Description
Technical field
The invention belongs to technical field of inorganic nonmetallic materials, and in particular to a kind of rice hull ash concrete and its preparation side
Method.
Background technology
Concrete, most popular construction material in the world, development can trace back to one it is very ancient when
Between, and developed and extended so far.It is reported that just there are Chinese ancients before thousands of years by the way that " earth burning is filled out in grooving, and wooden bone supports mud
The construction process of wall " carries out building construction.According to archaeology personnel's explanation, Ling Jia people from beaches at that time is with waddy, native, viscous through what is burnt
Mud, even reed reinforce house, this manufacturing technology with it is existing now we mixed with the reinforcing bar that reinforcing bar, cement, sandstone etc. are made
Solidifying soil is closely similar in terms of manufacture craft.This is perhaps exactly the earliest grasp of Ancient Times in China people and with concrete.And in public affairs
It is said that before member Egypt in 3000 built ancient times the world eight the pyramid of one of big miracle be exactly external ancients' plaster of paris
Construction is mixed with lime, this is also one of existing earliest concrete structure in the world.And to 1824,
Tile kilning worker Joseph Aspdin the exerting jointly in earlier generations people (J.Smeaton, J.Parker et al.) of Britain at that time
Limestone is successfully passed under power achievement and clay allocates successfully artificial portland cement, becomes the beginning of cement industry development.
From after being developed Portland cement, since its raw material is easily obtainable, cost is also cheap, particularly energy consumption nor
Normal is low, and the intensity for the concrete being configured to it and durability are also very good, and therefore, its purposes is extremely wide.Than
If the armored concrete canoe that is shown in the fair of Paris for 1855 is exactly with Poland by a technician of France in 1854
Incorporation wire netting obtains in the concrete that special cement makes, and has thus triggered the scientific revolution of an armored concrete：
The French technician of one in 1867 achieves a kind of patent of concrete floorings；1877, the Thaddeus H in the U.S.
Yayy is made that investigation to the mechanical property of beams of concrete；A German building constructor has been carried out to armored concrete for the first time within 1884
A series of scientific experimentation has been carried out, and wherein to the viscous of the intensity of armored concrete, fire resistance, reinforcing bar and concrete
Knot power is studied；The method for calculating armored concrete is delivered first German engineer Cologne in 1887；English
State's Wilson's also obtain the patent of armoured concrete slab；France built before 1,901 first armored concrete road and
Bridge.... to after 1918, ratio of mud theory is published, and the intensity of concrete can also be calculated, and cement
It has all been reinforced much with the quality of concrete, the development of concrete is also getting faster.Later, many countries started to concrete
Various performances studied, and had developed that the concrete of superhigh intensity, steam-pressing aero-concrete etc. are various to be built for difference
The concrete in field is built, and mineral admixture also begins to be used in the research of concrete ... so since generation for many years,
A variety of additives and extra material are widely used, and especially high molecular material also begins to the constituent material for entering concrete one after another
Field, there is various high-strength concretes；Various plants fiber and staple fibre also be used to make various types of fibres
It ties up on concrete.The technology of the test various performances of concrete of many science of the thing followed is also led in concrete more and more
It is employed in domain.As building trade application material the most main --- concrete material has begun that this world is allowed to occur
Huge change.
Nowadays the manufacturing process of concrete and manufacturing technology come into the very high stage.With with science and technology and life
The development of force of labor, concrete material with its it is durable, intensity is high, cheap, simple for process the advantages that capture the world rapidly
Construction market, and with the gradual appearance of domestic and international various high intensity, the excellent concrete of high-performance, in various harsh environments
Middle operation is flooded with concrete construction and in being continuously increased everywhere in the world.But as most commonly used Building wood in the world
Material, influence of the concrete to ecological environment are very big.According to related document report, the preparation of concrete is to pure water, lime stone, combustion
The consumption of the natural resources such as coal is huge.Especially China is while economy rapid development, various buildings are rised sheer from level ground
Building energy consumption is also high, has accounted for 38% of gross national economy or so, has reached the 4 of the domestic and international index of same environment
Times or so, and although concrete is clean than other construction materials, the required grass of production of concrete, material and caused by dirt
Dye is also comparatively smaller.But its usage amount is really huge after all, especially today in economy rapid development, to sandstone
The exploitation for waiting aggregates excessive thereby results in the resource in many areas and the destruction of environment, in addition, more and more discarded concretes
Be removed, cause the substantial amounts of wasting of resources and environmental pollution, and floor space is also very big, today particular problem not
It can underestimate.Since 21 century, green economy, which develops, has become the common recognitions of countries in the world, in face of it is such the problem of, energy saving building
Material reform also becomes the fundamental state policy of China, and being changed into environmentally protective high-performance by basic high-performance has become current mix
The trend of solidifying soil development.For this phenomenon, environmentally protective concrete is developed to become the another research of China scientific research personnel
Problem.And the big professor in China academician of the Chinese Academy of Engineering Wuzhong has been put forward for the first time the concept of green high performance concrete for this problem
(Green High Performance Concrete, abbreviation GHPC).GHPC Special attention will be given tos we should consciously enhance coagulation
The content of " green " in soil saves more resources, reduces environmental disruption, and wherein GHPC, which is defined, should have following features：(1)
Clinker cement is more saved, is reduced environmental pollution.The production of cement can generate substantial amounts of environmental contaminants, and can also generate
The substantial amounts of carbon dioxide for causing room effect.With extensive application of the concrete in engineering, also day gradual change is more for the production of cement,
And affecting global warming, we must positive treatment, find substitute cement cementitious material, make cement in concrete
Handy amount becomes fewer and fewer；(2) more industrial residues are filled, this can not only save material, can also better people's living environment,
Reduce the pollution of concrete；(3) performance of concrete is allowed to become higher, stronger as far as possible, thus can with the usage amount of concrete,
Obtain more economic benefits；(4) use the concrete of Green High Performance as far as possible in engineer application more.I.e.：We should this
The principle for " green " removes development high performance concrete, is economizing on resources, is developing concrete on the premise of environmental protection, is making energy
The building concrete of operation in various harsh environments.And at the same time many researchers in China are also directed to green one after another
The research of color concrete.For example, pond ripples, Du Ting et al. are to recycled aggregate of waste concrete reinforcement technique and Performances of Recycled Aggregate of Existing
Research；Jiang Xinpei et al. is used for the building waste artificial sand of brick mix structure the feasibility study of fine aggregate；Feng Qing leather et al. pair
The research of rice hull ash high performance concrete；The gellings such as calcining system and substitution cement that 600 DEG C or so rice husks are burnt till in Ouyang east
Material makes volume research of concrete etc..
Rice, graminaceous plant originate in from Tropical Asian, there is 24 chromosomes.Rice is found and is planted in China first
It plants, spread later all over the world.The rice that we eat is exactly the thing of the grain of rice that rice is born after shell is removed.It is existing
The present, in the world most population make a living by rice.And rice husk is exactly the byproduct of rice, wrap up in outside rice that layer of shell is exactly
Rice husk.The material composition of rice husk is：Crude fibre 35.5%-45%, lignin 21%-26%, polycondensation pentose 16%-22%, ash
Divide 11.4%-22%, silica 1 0%-21% (being shown in Table 1).
The material composition of 1 rice husk of table
Essential element composition is also pressed from both sides for C, H, O, Si by a small amount of impurity in rice husk, this just manufactures high-performance building for rice husk
Material obtains extremely beneficial condition.And rice, as world-class crops, the annual output of paddy has reached 600,000,000 in recent years
More tons, and as the China of large agricultural country, the annual output of rice also reaches the half in modern times circle；And by-product of the rice husk as rice
Product, its yield is huge, is the 20% of paddy weight.But while there are many potential industrial use, the big portions of rice husk for rice husk
Divide the method it has not been found that reasonably recycling.The purposes of stage rice husk is generally divided into these aspects now：(1) it is sharp
With the cellulose substances contained in rice husk, by hydrolyzing the substances such as rice husk Fodder making, fertilizer and xylitol；(2) rice is utilized
High silicone content in shell：Make porous silica, white carbon, high-temperature refractory, battery material, waterglass, fine ceramics,
The substances such as silicon carbide whisker (particle)；(3) substantial amounts of heat is generated also by the burning of rice husk, and is converted into other energy etc.；
(4) it is exactly finally that rice husk mixes applying for concrete for making green concrete in terms of building：If rice husk is mixed into coagulation
In soil, the material for rice husk and concrete is all to have huge benefit, can sufficiently using agriculture waste rice husk and
Pollution of the other materials such as cement to environment can be reduced, is killed two birds with one stone.But have a little it should be noted that due to rice husk itself
It is not cementitious material, so rice husk incorporation concrete inherently influences intensity of original concrete itself, therefore its not right and wrong
Often it is suitble to the concrete for making high intensity, along with the exclusive characteristic of rice husk itself, will certainly improves to a certain extent mixed
Coagulate the permeability performance of soil.So, rice husk can limit to very much in the development of Concrete Industry.So so far, most of rice husk meetings
It by on-site incineration or directly discards, very big waste is thus caused to land resource, ecological environment is caused very big
Pollution, a large amount of rice husks can generate substantial amounts of CO after high-temperature calcination2One of, the reason for still causing greenhouse effects.And rice husk
Burning can also generate that a large amount of floor spaces are bigger, and (powdered in grey black, loss on ignition 5% is left for the rice hull ash of proportion but very little
It is right), if state cannot timely be handled, secondary pollution can be caused to environmental resource.Resultant product-rice husk as combusting rice hull
Ash and the rice husk remaining mineral products after burning.Contain substantial amounts of SiO in rice hull ash293% or so is accounted for, remaining also has
A small amount of Na2O、K2O etc. is a kind of high silicon pozzolanic material of low cost, is widely studied in foreign countries.Therefore, domestic many
Person also begins to study rice hull ash in recent years, the research especially in terms of building.Such as：Foreign scholar Nakata et al.
Have studied rice husk burn between 400 DEG C and 1500 DEG C acquisition rice hull ash in SiO2Property；Kapur et al. has developed one
Kind TIB rice-husk combustion stoves；Domestic Zhang Xiaodong et al. has developed a kind of SiO extracted in rice hull ash2Method；Such as Feng Qingge
Person, which tests, to be made with the mass substitutions cement such as rice hull ash in cementitious material incorporation concrete, can be very good to improve the knot of concrete
Structure improves the compactness of concrete itself；And the big academician in Wuzhong as China concrete material science founder makes rice husk
The conclusion of grey " being expected close to silicon ash effect "；Lee party justice et al. has studied the concrete of rice hull ash, shows：Rice hull ash etc. matter
When measuring percent 20 cement of generation, the early anti pressured intension for mixing the concrete of rice hull ash does not mix the common of rice hull ash respectively less than
The early anti pressured intension of concrete, but it is what be increased to measure its 28 days compression strength compared with common concrete；
It burns if Ouyang east et al. works out rice husk below 600 DEG C, obtains rice hull ash, and substituted with quality such as 10%-20%
Concrete is made in cement consumption in concrete in cementitious material, can make the compression strength of concrete increase more than 10MPa；Beam
Generation celebrating et al. has studied influence of the rice hull ash to the performance of concrete, it was therefore concluded that：Concrete in the test of the slump with
The increase of rice hull ash dosage and reduce, and the incorporation of rice hull ash also has the cement paste presetting period significant impact, but
The influence of final setting time to starching only is simultaneously little ..., and although rice hull ash has very big development in scientific research field, raw in reality
Inside engineer application field living, rice hull ash is not yet largely used by actual architectural engineering, and regards a kind of substantial amounts of agriculture rubbish as
Rubbish.For how by rice hull ash be applied to actual life in it is also to be studied.Although and there are a large amount of rice hull ash in coagulation
As research object in the research field of soil, but correlative study still lacks systematicness and comprehensive, and especially rice hull ash is made
For cementitious material cement is substituted to make the shadow of concrete test block and its normal concrete in the difference of the performances such as resistance to compression, anti-folding
Rule is rung to still need further to study.
In recent years, as China's modernization construction develops, requirement of the people to the various aspects of life is also higher and higher, such as
Clothes, diet etc. especially for construction industry, are set up in the world in the environment for the various high requests that various buildings must be
Come, and be used as modernization construction structural material-concrete the most main, it is also necessary to the development of our modernization constructions is adapted to,
The various performances of concrete must be improved, in case the application of various environment.And various green admixtures in concrete, especially
The reference of the industrial wastes such as silicon ash can not only improve the performances such as intensity, durability and the workability of concrete, can also be to China
Expanding economy and the pollution of Environment control prevent the very useful of the wasting of resources etc..At present, silicon ash is in China's concrete
Exploitation in be widely used, application of the silica flour in the research and development of countries in the world concrete is also ripe, and silica flour
It is widely used in the configuration of the high-strength concrete of many mixing plants in China.But a large amount of use of silicon ash and therewith
The problem of bringing is also very sharp：It is exactly that the cost that the acquisition of the silicon ash as concrete admixture needs is very high, transport is tired
It is difficult, also very big to the consumption of electric energy.This has also resulted in many small business and has gone to use silicon ash system there is no enough capitals
Make high performance concrete, and the cost of high performance concrete that the incorporation of silicon ash is fabricated to is also higher.The world is each as a result,
A kind of material that can substitute silicon ash is being studied always by state, also, we have found agricultural wastes all over the world --- rice
Shell and the rice hull ash burnt till by rice husk as fuel.Comparatively, if substitute of the rice hull ash as silicon ash, its acquisition phase
Very simple for, also relative moderate is many for cost, likewise, rice husk belongs to agricultural residue, yield is very big, is made of rice husk
Rice husk gray density also very little, and the content of the amorphous silica in rice hull ash, more than 90%, this is just rice hull ash
Substitution silicon ash provides theoretical foundation as green high performance concrete.It is made therefore, it is necessary to be mixed to rice hull ash in concrete
The mechanical property of mechanical property and silica-on-silicon optical waveguides into rice hull ash concrete compares and analyzes, while to rice hull ash (silicon ash)
Volume is how many and whether the time of grinding can influence the research of the various performances of the concrete made and also be necessary.
The content of the invention
For deficiency of the prior art, it is an object of the invention to provide a kind of rice hull ash concrete and its preparation sides
Method.
To achieve these goals, the present invention adopts the technical scheme that：
A kind of rice hull ash concrete, the material component and weight of the rice hull ash concrete are：Cement 284-
369th, rice hull ash 21-64, flyash 21-64, silicon ash 12.7, sand 503.5, stone 977.4, water-reducing agent 2, water 195 are described heavy
The unit of amount proportioning is kg/m3。
Chemical component weight part of the rice hull ash be silica 79.38%, three silica 0.32%, aluminium oxide
0.3%, calcium oxide 1.7%, magnesia 1.53%, potassium oxide 0.913%, sodium oxide molybdena 0.89%, loss on ignition 11.06%；
The cement is the cement that the strength grade provided by Xuanhua Jinyu Cement Co., Ltd is P.O42.5；
The sand, apparent density ρos=2.58g/cm3；Bulk density ρ 'os=1560kg/m3；Modulus of fineness Mx=
3.0, it is middle sand；
The stone, apparent density ρos=2.53g/cm3；Bulk density ρ 'os=1350kg/m3；Nominal particle diameter 5-20mm；
The water-reducing agent is poly carboxylic acid series water reducer.
The preparation method of the rice hull ash concrete, the method step are as follows：
Step 1: the preparation of rice hull ash；
Step (1) first, by the rice husk wash clean bought from Zhangjiakou City Wanquan County rice husk processing factory, drying, removes it
In impurity, in case rice hull ash making use；
Step (2) sets temperature increasing schedule, and the maximum temperature of burning till of rice hull ash is set to 600 DEG C；Calcining system is designed as：Room
Temperature to 300 DEG C heating 30min；300-400 DEG C of heating 20min；400-600 DEG C of heating 30min；600 DEG C of constant temperature 30min；600
DEG C-room temperature, Temperature fall；Specifically, 20 DEG C or so to 300 DEG C heating 30min；300-400 DEG C of heating 30min；400-600℃
Heat up 30min；600 DEG C of constant temperature 30min；600-300 DEG C of cooling about 4h；300 DEG C to room temperature cool down about 1.5h；
The rice husk of drying is put into fire-clay crucible by step (3), and crucible is put into heating furnace and carries out burning processing；
Crucible taking-up is put into and is quickly cooled down outside window, treat that temperature is cold until descent of temperature is to after less than 300 DEG C by step (4)
But manufactured rice hull ash from crucible is taken out afterwards, measures and fire the main component of successful rice hull ash as SiO2；
The grinding of step (5) rice hull ash；Using YJ-300 type high speed Universal pulverizers, it is limited that Medical Devices are good for by Jinan hundred million
Company manufactures, rated voltage 220V, power 1400W, 28000 revs/min of motor speed, and powder fineness is 50-300 mesh, after burning
Rice hull ash be put into pulverizer progress grinding processing, wherein, rice hull ash makees the grinding processing of 2min, 3min, 4min；
Grinding rice hull ash is carried out XRD diffraction analysis by step (6) with Antai Science and Technology Co., Ltd's X-ray diffractometer；
Step 2: respectively every group weigh each material utilization amount in 10L rice hull ash concrete and silica-on-silicon optical waveguides；
Step 3: pressing rice hull ash, flyash, silicon ash, cement, sand mix 1min respectively needed for each group, stone is added
Sub- mix 1min；
2min is stirred Step 4: the mixing water of definite amount is poured on the concrete of mix 1min；
Step 5: adding in the water-reducing agent mixed up continues mix 1min；
Step 6: making the slump test that concrete is stirred at this time, check whether and meet design standard；
Step 7: the die trial (100mm × 100mm × 100mm) of preparation is coated mineral oil, one is encased inside at bottom stomata
Paper is allowed to easily demould；
Step 8: the concrete mixed is fitted into die trial, the plain jolter provided using this laboratory carries out ram-jolt, but
Time is not too long；
Step 9: being marked the concrete test die of ram-jolt respectively with for distinguishing with writing brush, it is then placed in mark and supports
Maintenance for 24 hours is carried out in case；
Step 10: conserving enough concrete test blocks for 24 hours in supporting case in mark takes off die trial, the concrete that then will have been demoulded
Test block is put into steam box by this experimental design carries out steam curing respectively.
Advantageous effect
1st, the final tensile pressure ratio of rice hull ash concrete compares the high by 30% of silica-on-silicon optical waveguides, and toughness is preferable, and rice hull ash
Two kinds of strength tests of concrete also correspond to the design standard of this experiment C40.
2nd, it is preferable to promote effect to the compression strength of concrete for the incorporation of rice hull ash and silicon ash.
3rd, theoretically rice hull ash grinding time is longer, and grinding fineness is thinner, and rice hull ash concrete strength is higher.
4th, multiple fly ash ash is very big to the intensity effect of rice hull ash concrete, the compression strength shadow especially to concrete
Sound is bigger, mixes that influence of the fine coal to rice hull ash concrete is bigger than silicon ash again, the intensity of concrete when doping quantity of fly ash is 10%
Highest.
Description of the drawings
Fig. 1 compression strength with rice hull ash changes of contents tendency chart；
Fig. 2 compression strength is with rice hull ash grinding time trend chart；
The tendency chart that Fig. 3 compression strength changes with fly ash content；
The tendency chart that Fig. 4 tensile strength changes with rice hull ash volume；
The tendency chart that Fig. 5 tensile splitting strengths change with rice hull ash grinding time；
Fig. 6 tensile splitting strengths with fly-ash-contained variation tendency chart；
Fig. 7 rice hull ash concrete pulling pressure ratios are with rice hull ash incorporation trend chart；
The trend chart that the tensile pressure ratio of Fig. 8 rice hull ash concrete changes with rice hull ash grinding time；
The tensile pressure ratio of Fig. 9 rice hull ash concrete with fly-ash-contained variation tendency chart.
Specific embodiment
9 kinds of material components proportioning of embodiment 1-9 the application rice hull ash concrete is shown in Table 4
The chemical composition (%) of 2 silicon ash of table
The chemical composition (%) of 3 rice hull ash of table
Each material utilization amount (kg/m in 4 rice hull ash concrete of table3)
The YES-2000 types and YAW-300 type electric-liquid type pressure testings of the prosperous testing machine Manufacturing Co., Ltd manufacture in Jinan Road
Machine, in June, 2015 dispatch from the factory, and accuracy class is 1 grade, and test reading is carried out by RFP-03 types intelligent tester.In this experiment,
The former is used for testing the compression strength of concrete；The latter is used for testing agent on crack resistance of concrete cleavage strength.
YH-40B type standard thermostatic constant moisture culturing boxes.Beijing Zhongjiao Engineering Instruments Institute is produced, and maximum power is
2000W, operating voltage 220V, in September, 2016 is dispatched from the factory, this curing box temperature and wet is controlled by FY-10 type temperature and humidity control instruments
Degree.The standard curing of rice hull ash concrete is made in this experiment of this curing box.
HJ-84 types concrete accelerates curing box (namely steam box).Wuxi City south China test apparatus Co., Ltd manufactures,
Operating voltage 380V, heating power 6000W；Temperature control scope：- 99.9 degrees Celsius of room temperature is produced in October, 2015.In this experiment
In, this steam box makees rice hull ash accelerated curing of concrete.
The range analysis of rice hull ash concrete crushing strength
By extremum difference analysis, rice hull ash concrete crushing strength test data is handled, handling result see the table below
5。
The range analysis of 5 rice hull ash concrete crushing strength of table
It can be seen that by the data of range analysis in three groups of variables, fly-ash-contained size rice hull ash coagulation
The compression strength of soil influences maximum.It, which influences size, in this experiment can reach 6.9Mpa, subinfluent to be only rice hull ash
Incorporation and rice hull ash grinding time, be respectively 5.2Mpa and 3.0Mpa.
The trend chart that rice hull ash volume influences final concrete crushing strength, is shown in Fig. 1.
By Fig. 1, we are not difficult to find out, as rice hull ash volume by A1 (5%) increases to A2 (10%), rice hull ash is mixed
The compression strength for coagulating soil is then to add 8.6% to 57.8Mpa by 53.2Mpa, and the incorporation of rice hull ash continues increase by 5% and reaches
During to A3 (15%), the compression strength of rice hull ash concrete only reaches 58.4Mpa, adds 1.0%.Obviously, rice hull ash
Increase can improve the final compression strength of concrete.But continue to increase with rice hull ash incorporation, it is to concrete anti-compression
The promotion of intensity is less and less, until stopping, it could even be possible to reducing the final compression strength of concrete.
By Fig. 2 it will be seen that increasing to B2 (3min) by B1 (2min) with the grinding time of rice hull ash, then to B3
(4min), the fineness of rice hull ash grinding is also increasingly thinner, but the compression strength for the rice hull ash concrete made is first in 54.6Mpa
Increasing to 57.6Mpa increases by 5.5%, but has begun to reduce and eventually reduce in B2 (3min) to B3 (4min)
0.7% reaches 57.2Mpa.As it can be seen that increasingly longer with the grinding time of rice hull ash, the fineness of rice hull ash grinding is also increasingly
Carefully, but to be made as the compression strength of rice hull ash concrete be just to start to reduce after a critical value is increased to, hence it is evident that powder
The effect for reducing concrete crushing strength after mill 3min in rice hull ash has been enough to offset rice hull ash to concrete crushing strength
Castering action.
The trend chart that the incorporation of flyash influences final concrete crushing strength, is shown in Fig. 3.
As seen from Figure 3, as doping quantity of fly ash by C1 (5%) increases to C2 (10%), rice hull ash concrete it is anti-
Compressive Strength is then to increase to 59.6Mpa by 52.7Mpa, adds 13 percentage points；And as the incorporation of flyash is by 10%
15% is increased to, the compression strength of rice hull ash concrete is then to reduce 4.4% suddenly, reaches 57.0Mpa.Although as it can be seen that powder
The volume increase of coal ash can cross the compression strength for improving rice hull ash concrete, still, as fly-ash-contained excessively will
The usage amount of cement is caused to reduce or can reduce the compression strength of concrete.Therefore, single incorporation from flyash is to rice husk
From the point of view of the compression strength of grey concrete influences, when the volume of flyash is 10%, the compressive property of made concrete is best.
The tensile splitting strength analysis of rice hull ash concrete
The trend chart that the incorporation of rice hull ash influences final concrete splitting tensile strength, is shown in Fig. 4.
As seen from Figure 4, as rice hull ash volume by A1 (5%) increases to A2 (10%), rice hull ash concrete
Tensile splitting strength be then to add 13.2% to 2.91Mpa by 2.57Mpa, the incorporation of rice hull ash continues increase by 5%
When reaching A3 (15%), the tensile splitting strength of rice hull ash concrete but has begun to decline, and has reached 2.75Mpa, has reduced
5.5%.As it can be seen that when the incorporation of rice hull ash is smaller, with the increase of incorporation, the tensile strength of concrete increases quickly.But
It is that after being filled with rice hull ash more than more than 10%, the tensile strength of concrete can be reduced instead.So to concrete
From the point of view of the influence of tensile splitting strength, rice hull ash surveys incorporation can be as the optimum value of incorporation for 10% or so.
The trend chart that the grinding time of rice hull ash influences final concrete splitting tensile strength, is shown in Fig. 5.
As seen from Figure 5, B2 (3min) is increased to by B1 (2min) with the grinding time of rice hull ash, then to B3
(4min), the fineness of rice hull ash grinding is also increasingly thinner, but the tensile splitting strength for the rice hull ash concrete made first exists
2.56Mpa, which increases to 2.83Mpa, increases by 10.5%, slowly stops increasing in B2 (3min) to B3 (4min), be finally reached
2.84Mpa.As it can be seen that increasingly longer with the grinding time of rice hull ash, the fineness of rice hull ash grinding is also increasingly thinner, but is made as
The tensile splitting strength of rice hull ash concrete is just to start to reduce after a critical value is increased to, hence it is evident that in grinding
The fineness of rice hull ash has promoted the tensile splitting strength of rice hull ash concrete little after 3min.Therefore, to grinding institute
From the point of view of the time of consumption and effect, in B2 i.e. 3min, the Split-tension of Rolled for mixing concrete is strong for the grinding time of rice hull ash
Spend cost performance highest.
The trend chart that the incorporation of flyash influences final concrete crushing strength, is shown in Fig. 6.
As seen from Figure 6, as doping quantity of fly ash by C1 (5%) increases to C2 (10%), rice hull ash concrete is split
It is then to increase to 2.74Mpa by 2.70Mpa to split tensile strength, increases only 1.5%；And as the incorporation of flyash is by 10%
15% is increased to, the tensile splitting strength of rice hull ash concrete is then to increase 2.2% suddenly, reaches 2.80Mpa.It is as it can be seen that multiple
Fly ash influences the tensile strength of rice hull ash concrete when volume is less big or smaller.As it is mixed
The increase of amount, the tensile strength rising of concrete but become faster.Therefore, in this experimental design, the incorporation of flyash should be designed
It measures as 15%, makes the anti-splitting parameter highest of concrete.
The tensile pressure ratio of rice hull ash concrete strength, tensile pressure ratio see the table below 6.
The tensile pressure ratio of 6 rice hull ash concrete curing 28d of table
The 2nd group of highest of the tensile pressure ratio of rice hull ash concrete strength it can be seen from the tensile pressure ratio data of rice hull ash concrete,
For 0.0544.Also illustrate that the 2nd group of variable toughness of rice hull ash concrete is best simultaneously, brittleness is relatively small.
The trend chart that the incorporation of rice hull ash influences final concrete pulling pressure ratio, is shown in Fig. 7.
As seen from Figure 7, as rice hull ash volume by A1 (5%) increases to A2 (10%), rice hull ash concrete
Tensile pressure ratio be then to add 5.4% to 0.0506 by 0.0480, the incorporation of rice hull ash, which continues to increase by 5%, reaches A3
(15%) when, the tensile pressure ratio of rice hull ash concrete but has begun to decline, and has reached 0.0470, has reduced 7.1%.As it can be seen that rice
When the incorporation of shell ash is smaller, the incorporation of rice hull ash can improve the bulk strength and toughness of concrete.But with rice hull ash
Incorporation increase, the brittleness of concrete can be improved instead, reduce the mechanical property of concrete.
The trend chart that the grinding time of rice hull ash influences final concrete pulling pressure ratio, is shown in Fig. 8.
As seen from Figure 8, B2 (3min) is increased to by B1 (2min) with the grinding time of rice hull ash, then to B3
(4min), the fineness of rice hull ash grinding is also increasingly thinner, equally measures the tensile pressure ratio of rice hull ash concrete and first increases 0.0473
To 0.0494, increase, 4.4%, slowly stop increasing in B2 (3min) to B3 (4min), finally increasing 0.6% again reaches
0.0497.As it can be seen that although the grinding time of rice hull ash is increasingly longer, the tensile pressure ratio for the rice hull ash concrete made is also slowly
Increase.But substantially the fineness of rice hull ash is little to the tensile pressure ratio promotion of rice hull ash concrete after grinding 3min,
It is not very big namely to the toughness promotion of rice hull ash concrete.
The incorporation of multiple fly ash is shown in Fig. 9 to the trend chart of final concrete pulling pressure ratio.
As seen from Figure 9, as doping quantity of fly ash by C1 (5%) increases to C2 (10%), the drawing of rice hull ash concrete
Pressure ratio is then to be reduced to 0.0458 before this by 0.0515, reduces 11.1%；And as the incorporation of flyash is by 10% increase
To 15%, the tensile pressure ratio of rice hull ash concrete is then to increase 7.2% suddenly, reaches 0.0491.As it can be seen that multiple fly ash is being mixed
Enter amount it is little when the compression strength of concrete is promoted relatively large, it is more crisp also to have resulted in concrete.But when, with fine coal
Grey volume increase to more than 10% after, flyash is higher to the promotion of the tensile strength of rice hull ash concrete, also results in
The rising of tensile pressure ratio, toughness are promoted.
Analysis on action mechanism
From above-mentioned test data and analysis result：As a kind of high unformed SiO of low cost2The agriculture waste of content
Volcano ash effect can occur in concrete for the by-product rice hull ash of object, generate C-S-H gels, be filled in cement granules
Between gap, it can thus make concrete more closely knit, so as to improve intensity；And the density very little of made rice hull ash,
It can inherently be filled in the hole of concrete, release and be filled in moisture therein originally, improve the work of mixture
Property.And rice hull ash is thinner, its chemical reactivity will be higher, and it is bigger to improve degree to gelling system intensity.Rice husk
Also containing substantial amounts of hole in ash, with the increase of rice hull ash incorporation, the quantity in hole is also to greatly increase, the hole meeting in rice hull ash
The moisture in concrete mortar is absorbed, also resulting in the water-cement ratio of slurry reduces, and the intensity of concrete is reduced with this.But rice husk
By after grinding, its pore structure will be destroyed ash, and the grinding time of rice hull ash is longer, and the destruction of pore structure is also tighter
Weight, so as to which the influence to rice hull ash concrete will be smaller.As most hole is destroyed, the grinding fineness of rice hull ash is to mixed
The influence of solidifying soil working performance will also become smaller；But also due to the density very little of rice hull ash, comparative surface area is just relatively
Greatly, adsorbing water will be excessive, can not only reduce water-cement ratio, reduce the intensity of concrete, can also distribute many heats of hydration, mixes
If excessive, later stage contraction can be increased, concrete strength is reduced, so this experiment to also having mixed silicon ash and fine coal again in concrete
Ash is to reduce later stage concrete shrinkage.
Analysis on action mechanism of the flyash in rice hull ash concrete
From above-mentioned test data and analysis result：Flyash is equally a kind of trade waste, with the work of rice hull ash
Similar with mechanism, its main activity is also from his SiO of itself2Content.Have in the particle composition of flyash substantial amounts of
What vitreum and a small number of carbon granules formed.This vitreum can significantly improve the mobility of concrete mix.And it is also
Concrete water bleeding can be hindered, improves the water-retaining property of mixture；And flyash can be filled in concrete not fine and close enough
Kong Zhong extrudes the moisture in hole, improves the workability of mixture；Secondary reaction of hydration can also occur for flyash, improve
The mechanical strength of concrete.If but it is excessive with the volume of flyash, the dosage of cement opposite will become smaller, so as to reduce
The ratio of reaction generation C-S-H gels, thus has and is not involved in reacting with a little flyash.So it is just filled out without enough products
The hole of concrete is filled, the intensity of final concrete will reduce.
Finally it should be noted that：Obviously, above-described embodiment is only intended to clearly illustrate the application example, and simultaneously
The non-restriction to embodiment.For those of ordinary skill in the art, can also do on the basis of the above description
Go out other various forms of variations or variation.There is no necessity and possibility to exhaust all the enbodiments.And thus drawn
Among the obvious changes or variations that Shen goes out is still in the protection domain of the application type.
Claims (3)
1. a kind of rice hull ash concrete, which is characterized in that the material component and weight of the rice hull ash concrete be：Water
Mud 284-369, rice hull ash 21-64, flyash 21-64, silicon ash 12.7, sand 503.5, stone 977.4, water-reducing agent 2, water 195,
The unit of the weight proportion is kg/m3。
2. rice hull ash concrete according to claim 1, which is characterized in that chemical component weight part of the rice hull ash is
Silica 79.38%, three silica 0.32%, aluminium oxide 0.3%, calcium oxide 1.7%, magnesia 1.53%, potassium oxide
0.913%, sodium oxide molybdena 0.89%, loss on ignition 11.06%；
The cement is the cement that the strength grade provided by Xuanhua Jinyu Cement Co., Ltd is P.O42.5；
The sand, apparent density ρos=2.58g/cm3；Bulk density ρ 'os=1560kg/m3；Modulus of fineness Mx=3.0, in being
Sand；
The stone, apparent density ρos=2.53g/cm3；Bulk density ρ 'os=1350kg/m3；Nominal particle diameter 5-20mm；
The water-reducing agent is poly carboxylic acid series water reducer.
3. the preparation method of rice hull ash concrete described in claim 1, which is characterized in that the method step is as follows：
Step 1: the preparation of rice hull ash；
First, the rice husk wash clean bought from Zhangjiakou City Wanquan County rice husk processing factory, drying remove therein for step (1)
Impurity, in case the making of rice hull ash uses；
Step (2) sets temperature increasing schedule, and the maximum temperature of burning till of rice hull ash is set to 600 DEG C；Calcining system is designed as：Room temperature is extremely
300 DEG C of heating 30min；300-400 DEG C of heating 20min；400-600 DEG C of heating 30min；600 DEG C of constant temperature 30min；600 DEG C-often
Temperature, Temperature fall；Specifically, 20 DEG C or so to 300 DEG C heating 30min；300-400 DEG C of heating 30min；400-600 DEG C of heating
30min；600 DEG C of constant temperature 30min；600-300 DEG C of cooling about 4h；300 DEG C to room temperature cool down about 1.5h；
The rice husk of drying is put into fire-clay crucible by step (3), and crucible is put into heating furnace and carries out burning processing；
Crucible taking-up is put into and is quickly cooled down outside window, after temperature cooling until descent of temperature is to after less than 300 DEG C by step (4)
Manufactured rice hull ash from crucible is taken out, measures and fires the main component of successful rice hull ash as SiO2；
The grinding of step (5) rice hull ash；Using YJ-300 type high speed Universal pulverizers, Medical Devices Co., Ltd is good for by Jinan hundred million
Manufacture, rated voltage 220V, power 1400W, 28000 revs/min of motor speed, powder fineness is 50-300 mesh, by the rice after burning
Shell ash is put into progress grinding processing in pulverizer, wherein, rice hull ash makees the grinding processing of 2min, 3min, 4min；
Grinding rice hull ash is carried out XRD diffraction analysis by step (6) with Antai Science and Technology Co., Ltd's X-ray diffractometer；
Step 2: respectively every group weigh each material utilization amount in 10L rice hull ash concrete and silica-on-silicon optical waveguides；
Step 3: pressing rice hull ash, flyash, silicon ash, cement, sand mix 1min respectively needed for each group, add stone and mix
Close 1min；
2min is stirred Step 4: the mixing water of definite amount is poured on the concrete of mix 1min；
Step 5: adding in the water-reducing agent mixed up continues mix 1min；
Step 6: making the slump test that concrete is stirred at this time, check whether and meet design standard；
Step 7: the die trial (100mm × 100mm × 100mm) of preparation is coated mineral oil, a piece of paper is encased inside at bottom stomata,
It is allowed to easily demould；
Step 8: the concrete mixed is fitted into die trial, the plain jolter provided using this laboratory carries out ram-jolt, but time
It is not too long；
Step 9: being marked the concrete test die of ram-jolt respectively with for distinguishing with writing brush, it is then placed in mark and supports in case
Carry out maintenance for 24 hours；
Step 10: conserving enough concrete test blocks for 24 hours in supporting case in mark takes off die trial, the concrete test block that then will have been demoulded
It is put into respectively by this experimental design in steam box and carries out steam curing.
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| CN112521036A (en) * | 2020-11-11 | 2021-03-19 | 东南大学 | High-activity low-temperature rice hull ash and high-performance concrete doped with same |
| CN112777986A (en) * | 2021-01-15 | 2021-05-11 | 浙江交工集团股份有限公司 | Machine-made sand ultrahigh-performance concrete and preparation method thereof |
| CN114872185A (en) * | 2022-05-07 | 2022-08-09 | 华南理工大学 | Biomass concrete prefabricated beam column structure and preparation method thereof |
| CN115259788A (en) * | 2022-07-15 | 2022-11-01 | 湖北工业大学 | Preparation method of low-cost green ultra-high performance concrete |
| CN116283115A (en) * | 2022-09-09 | 2023-06-23 | 中铁十八局集团有限公司 | High-strength stable anti-cracking concrete and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998054108A1 (en) * | 1997-05-26 | 1998-12-03 | Konstantin Sobolev | Complex admixture and method of cement based materials production |
| CN102643060A (en) * | 2012-05-02 | 2012-08-22 | 同济大学 | High-strength concrete mixed with low-temperature rice husk ash |
| CN107382205A (en) * | 2017-08-16 | 2017-11-24 | 西安建筑科技大学 | A kind of super high strength high performance fiber concrete of C160 strength grades and preparation method thereof |
-
2017
- 2017-12-29 CN CN201711470633.9A patent/CN108046671A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998054108A1 (en) * | 1997-05-26 | 1998-12-03 | Konstantin Sobolev | Complex admixture and method of cement based materials production |
| CN102643060A (en) * | 2012-05-02 | 2012-08-22 | 同济大学 | High-strength concrete mixed with low-temperature rice husk ash |
| CN107382205A (en) * | 2017-08-16 | 2017-11-24 | 西安建筑科技大学 | A kind of super high strength high performance fiber concrete of C160 strength grades and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 周炳炎等: "《固体废物特性分析和属性鉴别案例精选》", 31 December 2012, 中国环境科学出版社 * |
| 王瑞燕等: "《建筑材料试验指导书》", 31 May 2015, 重庆大学出版社 * |
| 黄甫元: "改性稻壳灰的制备及其脱硫性能研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
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|---|---|---|---|---|
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| CN112094067A (en) * | 2020-09-02 | 2020-12-18 | 中国建筑第五工程局有限公司 | Method for preventing drying and cracking of undisturbed shield muck baking-free product |
| CN112521036A (en) * | 2020-11-11 | 2021-03-19 | 东南大学 | High-activity low-temperature rice hull ash and high-performance concrete doped with same |
| CN112441792A (en) * | 2020-11-18 | 2021-03-05 | 湖南大学 | Regenerated thermal insulation mortar utilizing biomass ash and preparation method thereof |
| CN112777986A (en) * | 2021-01-15 | 2021-05-11 | 浙江交工集团股份有限公司 | Machine-made sand ultrahigh-performance concrete and preparation method thereof |
| CN112777986B (en) * | 2021-01-15 | 2022-09-20 | 浙江交工集团股份有限公司 | Machine-made sand ultra-high performance concrete and preparation method thereof |
| CN114872185A (en) * | 2022-05-07 | 2022-08-09 | 华南理工大学 | Biomass concrete prefabricated beam column structure and preparation method thereof |
| CN115259788A (en) * | 2022-07-15 | 2022-11-01 | 湖北工业大学 | Preparation method of low-cost green ultra-high performance concrete |
| CN115259788B (en) * | 2022-07-15 | 2023-03-28 | 湖北工业大学 | Preparation method of low-cost green ultra-high performance concrete |
| CN116283115A (en) * | 2022-09-09 | 2023-06-23 | 中铁十八局集团有限公司 | High-strength stable anti-cracking concrete and preparation method and application thereof |
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