CN106242614A - Utilize the method that building waste fine powder develops ultralight foam concrete - Google Patents

Utilize the method that building waste fine powder develops ultralight foam concrete Download PDF

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Publication number
CN106242614A
CN106242614A CN201610615867.7A CN201610615867A CN106242614A CN 106242614 A CN106242614 A CN 106242614A CN 201610615867 A CN201610615867 A CN 201610615867A CN 106242614 A CN106242614 A CN 106242614A
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China
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parts
building waste
fine powder
foam concrete
waste fine
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Inventor
汪海风
吴春春
卢建磊
杨辉
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Zhejiang University ZJU
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Zhejiang University ZJU
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Priority to CN201610615867.7A priority Critical patent/CN106242614A/en
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    • 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
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
    • 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
    • C04B18/16—Waste materials; Refuse from building or ceramic industry
    • 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
    • C04B28/006—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 containing mineral polymers, e.g. geopolymers of the Davidovits type
    • 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
    • C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
    • 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
    • C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
    • C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
    • 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
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Porous Artificial Stone Or Porous Ceramic Products (AREA)

Abstract

The invention discloses a kind of method utilizing building waste fine powder to develop ultralight foam concrete, comprise the steps: 1), add, in mixer, the solid powder being made up of building waste fine powder, slag, fiber, foam stabilizer, uniformly mixing, obtains mixed powder；2), in blender, add waterglass and water, uniformly mix；It is subsequently added into the mixed powder that 1. step obtains, uniformly mixes；Add hydrogen peroxide, continue mixing, obtain mixture slurry；3), injecting in mould by mixture slurry, stand molding, die surface is covered with to prevent the overcover of moisture evaporation, the demoulding after 22～26h, maintenance, ultralight foam concrete.

Description

Utilize the method that building waste fine powder develops ultralight foam concrete
Technical field
The invention belongs to fixed-end forces and building material technical field, be specifically related to the exploitation of one building waste fine powder super The method of light foam concrete.
Background technology
Promulgate and " the urban building waste of enforcement in 1 day June in 2005 on March 23rd, 2005 according to the former Ministry of Construction Administrative provisions ", building waste refer to that construction unit, unit in charge of construction are newly-built, renovating and enlarging and remove all kinds of building, structures, Produced spoir, rejected material and other garbage during pipe network etc. and resident's decorations house.Unite according to related data Meter, the building wastes that the most newly-built 10,000 square metres of buildings are discharged are about 600 tons, and that removes that every square metre of old building formed builds Building refuse is about 1 ton.At present, the quantity of China's urban building waste has accounted for the 30%～40% of municipal refuse total amount, if These building wastes can not carry out rational recycling, then along with the continuous propelling of China's Urbanization Construction, builds rubbish The yield of rubbish will be more and more, and its proportion accounting for municipal refuse also can raise further.
The enhancing realized along with environmental protection and resources conservation, countries in the world all strengthens this " city of urban building waste Mineral products " recycling, except by effective control measures in addition to source strictly controls building waste generation amount, also carried out big Measure the construction refuse regenerated research utilizing technology and application.At present, building waste has all been carried out in many countries and regions in the world Regeneration is studied, and the U.S., developed country's construction refuse resource rate such as German and Japanese are substantially accomplished at a relatively high water Flat, the building castoff resource rate of Japan has reached more than 97%, has substantially carried out 100% recycling, and The resource rate of China's building waste is still less than 5%.
Dry density is less than 400kg/m3Concrete be generally known as ultralight foam concrete.
Ultralight foam concrete has the advantages such as heat insulation, insulation, sound insulation, antidetonation, fire prevention, and receive much concern (Zhang Qi, cold ground The preparation of the ultralight foam concrete in district and performance, Harbin Institute of Technology's master thesis, 2014；Zhang Xin, leaf sword cutting edge of a knife or a sword etc., Chemical blowing is prepared ultralight hydrophobic foam concrete and is studied, New Building Materials, and 2013,3:49-53；Zhu Beirong, Li Zhi etc., poly- The tacryl impact on ultralight foam concrete shrinkage cracking, total utilization of PCA, 2015,4:3-8).With building waste The report developing ultralight concrete has 2012, and Ren Bingbing is with building waste as raw material, with portland cement as Binder Materials, logical Cross admixture coagulant, early strength agent, reinforcing agent and foam well prepared in advance, develop the ultralight foam concrete of cement based, work as water Mud, building waste weight ratio are 1:1, and foam addition is 6.5%, and during mixed with 7.5% reinforcing agent, material dry density reaches 405kg/m3, 28d comprcssive strength reaches 1.93MPa (Ren Bingbing, the composition and performance research of cement based light heat insulation material, Ha Er Shore polytechnical university Master's thesis, 2012).
At present, there are the following problems in the development of ultralight foam concrete:
1, the special cement that ultralight foam concrete is often strong with morning, the most solidifying is (such as sulphate aluminium cement, ferrous aluminate cement Deng) it is Binder Materials, but special cement scarcity of resources, cost is high, and there is endurance issues, hinders ultralight foam concrete Development.And for avoiding special cement drawback, people begin to use Portland cement to be Binder Materials, by admixture coagulant Hardening is accelerated in agent so that it is reach special cement using effect, but the kind of coagulant and the more difficult control of consumption, add foam Difficulty prepared by concrete；
2, for reaching Ultralight purpose, ultralight foam concrete has been introduced a large amount of air hole structure (by foaming agent foam, Then foam is joined in concrete mortar and causes), cause concrete strength low, dry linting the most easily occurs, falls The phenomenons such as slag, are unfavorable for construction；
3, the Binder Materials such as cement is still that Main Ingredients and Appearance in ultralight foam concrete, although people begin with slag, The trade wastes such as flyash replace cement, but substitute proportion is the highest, to reducing cement consumption, reduce because producing cement The environmental pollution that brings and to make full use of solid waste effect little.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of building waste fine powder exploitation that can make full use of solid waste resource The method of ultralight foam concrete,
In order to solve above-mentioned technical problem, the present invention provides one to utilize building waste fine powder to develop ultralight foam concrete Method, described concrete material is composed of the following components in parts by weight:
Building waste fine powder: 100 parts
Slag: 80～200 parts
Fiber: 0～2.0 part
Waterglass: 70～100 parts
Hydrogen peroxide: 8～15 parts
Foam stabilizer: 0.5～1 part
Water: 15～25 parts.
Improvement as the method utilizing the building waste fine powder ultralight foam concrete of exploitation of the present invention:
Building waste fine powder is (that is, a kind of by least one in the clay brick discarded, tile, concrete, stone, glass Or multiple) process through broken, particle diameter≤0.63mm；
Described slag is S95 level slag, i.e. described slag is to meet " the granulated blast-furnace ore deposit in cement and concrete Ground-slag " S95 grade standard requires in (GB/T18046 2000) slag；
Described fiber is the one in PP fiber, PVA fiber, glass fibre；
Described waterglass is sodium silicate water glass, modulus 1.0～2.0, solid content 25～35%；
Described hydrogen peroxide is industrial grade hydrogen peroxide, solid content 30%；
Described foam stabilizer is technical grade calcium stearate or sodium stearate.
The building waste fine powder that utilizes as the present invention develops the further improvements in methods of ultralight foam concrete, including Following steps:
1), add, in mixer, the solid powder being made up of building waste fine powder, slag, fiber, foam stabilizer, uniformly mix Close 10～30min, obtain mixed powder；
2), in blender, waterglass and water are added, uniformly after mixing 5～10min；Be subsequently added into that 1. step obtain is mixed Close powder body, uniformly mixing 2～10min；Add hydrogen peroxide, continue mixing 10～30s, obtain mixture slurry；
3), injecting in mould by mixture slurry, stand molding, die surface is covered with to prevent the overcover of moisture evaporation (thus avoid moisture evaporation too fast, and cause material cracks), 22～26h (preferably 24h) demoulding afterwards, maintenance, ultralight foam mixes Solidifying soil.
The building waste fine powder that utilizes as the present invention develops the further improvements in methods of ultralight foam concrete, step 3) maintenance is following a kind of mode:
1. steam press maintenance: temperature 100～200 DEG C, pressure 0.2～1.0MPa, the time 3～8h；2. fog room maintenance: temperature 20～25 DEG C, humidity >=90%RH, curing time 3～28d；The most naturally stack maintenance: temperature 5～35 DEG C, curing time 3～ 28d。
Use ultralight foam concrete dry density≤350kg/m that the inventive method is prepared3, heat conductivity≤ 0.08W/m K, comprcssive strength >=0.5Mpa.
The present invention ultralight foam concrete dry density presses GB/T 11970-1997 standard testing, and comprcssive strength presses GB/ T11971-1997 standard testing, heat conductivity presses GB/T 10294 standard testing.
The method utilizing the building waste fine powder ultralight foam concrete of exploitation of the present invention, has the advantage that
1, using waterglass and slag reactant is that novel gelled material (generates and connects with silicon-oxy tetrahedron and aluminum-oxygen tetrahedron The inorganic polymer connect), replace special cement and Portland cement, reduce cement consumption, reduce because production cement brings Environmental pollution, the problem such as energy resource consumption.Meanwhile, novel gelled material firm time is fast, good with foam process matching, is suitable for Develop ultralight foam concrete.
2, building waste usage amount is big, occupies concrete dry weight more than 80% together with slag, and the useless effect of profit is obvious；
3, ultralight foam concrete not only dry density is low, and heat conductivity is low, and comprcssive strength is high, can reduce and use Journey occurs the bad phenomenon such as slag, dry linting.
4, cement forms intensity by aquation crystallization, introduces too much substituent wherein, can destroy crystal overall structure, aobvious Writing and reduce intensity, the present invention is with waterglass and slag reactant as Binder Materials, and it is amorphous polymer structure, to substituent Covering property is good, and substituent amount is big, also little compared with cement system to intensity effect.
Detailed description of the invention
" part " in following case refers both to weight portion.
The method of embodiment 1, a kind of building waste fine powder ultralight foam concrete of exploitation:
(1) formula
Building waste fine powder (particle diameter≤0.63mm): 100 parts
Slag (S95 level): 80 parts
Sodium silicate water glass (modulus 1.0, solid content 35%): 70 parts
Hydrogen peroxide (technical grade, solid content 30%): 8 parts
Calcium stearate (technical grade): 0.5 part
Water: 25 parts.
(2) preparation process
1. toward mixer adding building waste fine powder, slag, these solid powders of calcium stearate as foam stabilizer, all Even stirring 10min, obtains mixed powder；
2. in blender, add waterglass and water, after stirring 10min, add the mixed powder that 1. step obtains, uniformly Stirring 10min, adds hydrogen peroxide, continues stirring 10s, obtains mixture slurry；
3. injecting in mould by slurry, stand molding, die surface is covered with overcover, prevents moisture evaporation too fast, causes Material cracks, the demoulding after 24h, steam press maintenance: temperature 100 DEG C, pressure 0.2MPa, time 8h.
Ultralight foam concrete dry density 267kg/m3, heat conductivity 0.061W/m K, comprcssive strength 0.50MPa.
Embodiment 2, a kind of building waste fine powder ultralight foam concrete method of exploitation:
(1) formula
Building waste fine powder (particle diameter≤0.63mm): 100 parts
Slag (S95 level): 100 parts
Sodium silicate water glass (modulus 1.0, solid content 35%): 70 parts
Hydrogen peroxide (technical grade, solid content 30%): 8 parts
Calcium stearate (technical grade): 0.5 part
Water: 25 parts
(2) preparation process
1. toward mixer adds building waste fine powder, slag, these solid powders of calcium stearate as foam stabilizer, stir Mix 30min, obtain mixed powder；
2. in blender, add waterglass and water, after stirring 8min, add the mixed powder that 1. step obtains, stirring 2min, adds hydrogen peroxide, continues stirring 30s, obtains mixture slurry；
3. injecting in mould by slurry, stand molding, die surface is covered with overcover, prevents moisture evaporation too fast, causes Material cracks, the demoulding after 24h, steam press maintenance: temperature 200 DEG C, pressure 1.0MPa, time 3h.
Ultralight foam concrete dry density 275kg/m3, heat conductivity 0.065W/m K, comprcssive strength 0.75MPa.
Embodiment 3, a kind of building waste fine powder ultralight foam concrete method of exploitation:
(1) formula
Building waste fine powder (particle diameter≤0.63mm): 100 parts
Slag (S95 level): 150 parts
Sodium silicate water glass (modulus 1.0, solid content 35%): 70 parts
Hydrogen peroxide (technical grade, solid content 30%): 8 parts
Calcium stearate (technical grade): 0.5 part
Water: 25 parts.
(2) preparation process
1. toward mixer adds building waste fine powder, slag, these solid powders of calcium stearate as foam stabilizer, stir Mix 20min, obtain mixed powder；
2. in blender, add waterglass and water, after stirring 5min, add the mixed powder that 1. step obtains, stirring 5min, adds hydrogen peroxide, continues stirring 20s, obtains mixture slurry；
3. injecting in mould by slurry, stand molding, die surface is covered with overcover, prevents moisture evaporation too fast, causes Material cracks, the demoulding after 24h, steam press maintenance: temperature 150 DEG C, pressure 0.5MPa, time 5h.
Ultralight foam concrete dry density 305kg/m3, heat conductivity 0.070W/m K, comprcssive strength 1.67MPa.
Embodiment 4, a kind of building waste fine powder ultralight foam concrete method of exploitation:
(1) formula
Building waste fine powder (particle diameter≤0.63mm): 100 parts
Slag (S95 level): 200 parts
Sodium silicate water glass (modulus 1.0, solid content 35%): 70 parts
Hydrogen peroxide (technical grade, solid content 30%): 8 parts
Calcium stearate (technical grade): 0.5 part
Water: 25 parts
(2) preparation process
1. toward mixer adds building waste fine powder, slag, these solid powders of calcium stearate as foam stabilizer, stir Mix 20min, obtain mixed powder；
2. in blender, add waterglass and water, after stirring 5min, add the mixed powder that 1. step obtains, stirring 5min, adds hydrogen peroxide, continues stirring 20s, obtains mixture slurry；
3. injecting in mould by slurry, stand molding, die surface is covered with overcover, prevents moisture evaporation too fast, causes Material cracks, the demoulding after 24h, steam press maintenance: temperature 150 DEG C, pressure 0.5MPa, time 5h.
Ultralight foam concrete dry density 350kg/m3, heat conductivity 0.080W/m K, comprcssive strength 1.85MPa.
Embodiment 5, a kind of building waste fine powder ultralight foam concrete method of exploitation:
(1) formula
Building waste fine powder (particle diameter≤0.63mm): 100 parts
Slag (S95 level): 150 parts
PP fiber: 1.0 parts
Sodium silicate water glass (modulus 1.0, solid content 35%): 70 parts
Hydrogen peroxide (technical grade, solid content 30%): 8 parts
Calcium stearate (technical grade): 0.5 part
Water: 25 parts.
(2) preparation process
1. toward mixer adds building waste fine powder, slag, fiber, these solid powder of calcium stearate as foam stabilizer Material, stirs 25min, obtains mixed powder；
2. in blender, add waterglass and water, after stirring 8min, add the mixed powder that 1. step obtains, stirring 8min, adds hydrogen peroxide, continues stirring 20s, obtains mixture slurry；
3. injecting in mould by slurry, stand molding, die surface is covered with overcover, prevents moisture evaporation too fast, causes Material cracks, the demoulding after 24h, steam press maintenance: temperature 150 DEG C, pressure 0.5MPa, time 5h.
Ultralight foam concrete dry density 300kg/m3, heat conductivity 0.066W/m K, comprcssive strength 1.61MPa.
Embodiment 6, a kind of building waste fine powder ultralight foam concrete method of exploitation:
(1) formula
Building waste fine powder (particle diameter≤0.63mm): 100 parts
Slag (S95 level): 150 parts
PP fiber: 1.0 parts
Sodium silicate water glass (modulus 1.5, solid content 35%): 70 parts
Hydrogen peroxide (technical grade, solid content 30%): 8 parts
Calcium stearate (technical grade): 0.5 part
Water: 25 parts.
(2) preparation process
1. toward mixer adds building waste fine powder, slag, fiber, these solid powder of calcium stearate as foam stabilizer Material, stirs 25min, obtains mixed powder；
2. in blender, add waterglass and water, after stirring 8min, add the mixed powder that 1. step obtains, stirring 8min, adds hydrogen peroxide, continues stirring 20s, obtains mixture slurry；
3. injecting in mould by slurry, stand molding, die surface is covered with overcover, prevents moisture evaporation too fast, causes Material cracks, the demoulding after 24h, steam press maintenance: temperature 150 DEG C, pressure 0.5MPa, time 5h.
Ultralight foam concrete dry density 330kg/m3, heat conductivity 0.071W/m K, comprcssive strength 1.66MPa.
Embodiment 7, a kind of building waste fine powder ultralight foam concrete method of exploitation:
(1) formula
Building waste fine powder (particle diameter≤0.63mm): 100 parts
Slag (S95 level): 150 parts
PP fiber: 1.0 parts
Sodium silicate water glass (modulus 2.0, solid content 35%): 70 parts
Hydrogen peroxide (technical grade, solid content 30%): 8 parts
Calcium stearate (technical grade): 0.5 part
Water: 25 parts
(2) preparation process
1. toward mixer adds building waste fine powder, slag, fiber, these solid powder of calcium stearate as foam stabilizer Material, stirs 25min, obtains mixed powder；
2. in blender, add waterglass and water, after stirring 8min, add the mixed powder that 1. step obtains, stirring 8min, adds hydrogen peroxide, continues stirring 20s, obtains mixture slurry；
3. injecting in mould by slurry, stand molding, die surface is covered with overcover, prevents moisture evaporation too fast, causes Material cracks, the demoulding after 24h, steam press maintenance: temperature 150 DEG C, pressure 0.5MPa, time 5h.
Ultralight foam concrete dry density 350kg/m3, heat conductivity 0.080W/m K, comprcssive strength 1.65MPa.
Embodiment 8, a kind of building waste fine powder ultralight foam concrete method of exploitation:
(1) formula
Building waste fine powder (particle diameter≤0.63mm): 100 parts
Slag (S95 level): 150 parts
PP fiber: 1.0 parts
Sodium silicate water glass (modulus 1.0, solid content 25%): 100 parts
Hydrogen peroxide (technical grade, solid content 30%): 15 parts
Sodium stearate (technical grade): 1 part
Water: 15 parts.
(2) preparation process
1. toward mixer adds building waste fine powder, slag, fiber, these solid powder of sodium stearate as foam stabilizer Material, stirs 25min, obtains mixed powder；
2. in blender, add waterglass and water, after stirring 8min, add the mixed powder that 1. step obtains, stirring 8min, adds hydrogen peroxide, continues stirring 20s, obtains mixture slurry；
3. injecting in mould by slurry, stand molding, die surface is covered with overcover, prevents moisture evaporation too fast, causes Material cracks, the demoulding after 24h, steam press maintenance: temperature 150 DEG C, pressure 0.5MPa, time 5h.
Ultralight foam concrete dry density 318kg/m3, heat conductivity 0.069W/m K, comprcssive strength 1.54MPa.
Embodiment 9, a kind of building waste fine powder ultralight foam concrete method of exploitation:
(1) formula
Building waste fine powder (particle diameter≤0.63mm): 100 parts
Slag (S95 level): 150 parts
PVA fiber: 1.0 parts
Sodium silicate water glass (modulus 1.0, solid content 35%): 70 parts
Hydrogen peroxide (technical grade, solid content 25%): 8 parts
Calcium stearate (technical grade): 0.5 part
Water: 25 parts.
(2) preparation process
1. toward mixer adds building waste fine powder, slag, fiber, these solid powder of calcium stearate as foam stabilizer Material, stirs 25min, obtains mixed powder；
2. in blender, add waterglass and water, after stirring 8min, add the mixed powder that 1. step obtains, stirring 8min, adds hydrogen peroxide, continues stirring 20s, obtains mixture slurry；
3. injecting in mould by slurry, stand molding, die surface is covered with overcover, prevents moisture evaporation too fast, causes Material cracks, the demoulding after 24h, steam press maintenance: temperature 150 DEG C, pressure 0.5MPa, time 5h.
Ultralight foam concrete dry density 307kg/m3, heat conductivity 0.070W/m K, comprcssive strength 1.56MPa.
Embodiment 10, a kind of building waste fine powder ultralight foam concrete method of exploitation:
(1) formula
Building waste fine powder (particle diameter≤0.63mm): 100 parts
Slag (S95 level): 150 parts
Glass fibre: 2.0 parts
Sodium silicate water glass (modulus 1.0, solid content 35%): 70 parts
Hydrogen peroxide (technical grade, solid content 25%): 8 parts
Calcium stearate (technical grade): 0.5 part
Water: 25 parts.
(2) preparation process
1. toward mixer adds building waste fine powder, slag, fiber, these solid powder of calcium stearate as foam stabilizer Material, stirs 25min, obtains mixed powder；
2. in blender, add waterglass and water, after stirring 8min, add the mixed powder that 1. step obtains, stirring 8min, adds hydrogen peroxide, continues stirring 20s, obtains mixture slurry；
3. injecting in mould by slurry, stand molding, die surface is covered with overcover, prevents moisture evaporation too fast, causes Material cracks, the demoulding after 24h, steam press maintenance: temperature 100 DEG C, pressure 0.2MPa, time 8h.
Ultralight foam concrete dry density 345kg/m3, heat conductivity 0.073W/m K, comprcssive strength 1.38MPa.
Embodiment 11, a kind of building waste fine powder ultralight foam concrete method of exploitation:
(1) formula
Building waste fine powder (particle diameter≤0.63mm): 100 parts
Slag (S95 level): 150 parts
PP fiber: 1.0 parts
Sodium silicate water glass (modulus 1.0, solid content 35%): 70 parts
Hydrogen peroxide (technical grade, solid content 30%): 8 parts
Calcium stearate (technical grade): 0.5 part
Water: 25 parts.
(2) preparation process
1. toward mixer adds building waste fine powder, slag, fiber, these solid powder of calcium stearate as foam stabilizer Material, stirs 25min, obtains mixed powder；
2. in blender, add waterglass and water, after stirring 8min, add the mixed powder that 1. step obtains, stirring 8min, adds hydrogen peroxide, continues stirring 20s, obtains mixture slurry；
3. injecting in mould by slurry, stand molding, die surface is covered with overcover, prevents moisture evaporation too fast, causes Material cracks, the demoulding after 24h, fog room maintenance: temperature 20～25 DEG C, humidity >=90%RH, maintenance 3 days.
Ultralight foam concrete dry density 305kg/m3, heat conductivity 0.068W/m K, comprcssive strength 1.02MPa.
Embodiment 12, a kind of building waste fine powder ultralight foam concrete method of exploitation:
(1) formula
Building waste fine powder (particle diameter≤0.63mm): 100 parts
Slag (S95 level): 150 parts
PP fiber: 1.0 parts
Sodium silicate water glass (modulus 1.0, solid content 35%): 70 parts
Hydrogen peroxide (technical grade, solid content 30%): 8 parts
Calcium stearate (technical grade): 0.5 part
Water: 25 parts.
(2) preparation process
1. toward mixer adds building waste fine powder, slag, fiber, these solid powder of calcium stearate as foam stabilizer Material, stirs 25min, obtains mixed powder；
2. in blender, add waterglass and water, after stirring 8min, add the mixed powder that 1. step obtains, stirring 8min, adds hydrogen peroxide, continues stirring 20s, obtains mixture slurry；
3. injecting in mould by slurry, stand molding, die surface is covered with overcover, prevents moisture evaporation too fast, causes Material cracks, the demoulding after 24h, fog room maintenance: temperature 20～25 DEG C, humidity >=90%RH, maintenance 28 days.
Ultralight foam concrete dry density 304kg/m3, heat conductivity 0.068W/m K, comprcssive strength 1.48MPa.
Embodiment 13, a kind of building waste fine powder ultralight foam concrete method of exploitation:
(1) formula
Building waste fine powder (particle diameter≤0.63mm): 100 parts
Slag (S95 level): 150 parts
PP fiber: 1.0 parts
Sodium silicate water glass (modulus 1.0, solid content 35%): 70 parts
Hydrogen peroxide (technical grade, solid content 30%): 8 parts
Calcium stearate (technical grade): 0.5 part
Water: 25 parts.
(2) preparation process
1. toward mixer adds building waste fine powder, slag, fiber, these solid powder of calcium stearate as foam stabilizer Material, stirs 25min, obtains mixed powder；
2. in blender, add waterglass and water, after stirring 8min, add the mixed powder that 1. step obtains, stirring 8min, adds hydrogen peroxide, continues stirring 20s, obtains mixture slurry；
3. injecting in mould by slurry, stand molding, die surface is covered with overcover, prevents moisture evaporation too fast, causes Material cracks, the demoulding after 24h, naturally stacking maintenance: temperature 5～15 DEG C, curing time 3d.
Ultralight foam concrete dry density 310kg/m3, heat conductivity 0.071W/m K, comprcssive strength 1.12MPa.
Embodiment 14, a kind of building waste fine powder ultralight foam concrete method of exploitation:
(1) formula
Building waste fine powder (particle diameter≤0.63mm): 100 parts
Slag (S95 level): 150 parts
PP fiber: 1.0 parts
Sodium silicate water glass (modulus 1.0, solid content 35%): 70 parts
Hydrogen peroxide (technical grade, solid content 30%): 8 parts
Calcium stearate (technical grade): 0.5 part
Water: 25 parts.
(2) preparation process
1. toward mixer adds building waste fine powder, slag, fiber, these solid powder of calcium stearate as foam stabilizer Material, stirs 25min, obtains mixed powder；
2. in blender, add waterglass and water, after stirring 8min, add the mixed powder that 1. step obtains, stirring 8min, adds hydrogen peroxide, continues stirring 20s, obtains mixture slurry；
3. injecting in mould by slurry, stand molding, die surface is covered with overcover, prevents moisture evaporation too fast, causes Material cracks, the demoulding after 24h, naturally stacking maintenance: temperature 20～25 DEG C, curing time 3d.
Ultralight foam concrete dry density 305kg/m3, heat conductivity 0.068W/m K, comprcssive strength 1.45MPa.
Embodiment 15, a kind of building waste fine powder ultralight foam concrete method of exploitation:
(1) formula
Building waste fine powder (particle diameter≤0.63mm): 100 parts
Slag (S95 level): 150 parts
PP fiber: 1.0 parts
Sodium silicate water glass (modulus 1.0, solid content 35%): 70 parts
Hydrogen peroxide (technical grade, solid content 30%): 8 parts
Calcium stearate (technical grade): 0.5 part
Water: 25 parts.
(2) preparation process
1. toward mixer adds building waste fine powder, slag, fiber, these solid powder of calcium stearate as foam stabilizer Material, stirs 25min, obtains mixed powder；
2. in blender, add waterglass and water, after stirring 8min, add the mixed powder that 1. step obtains, stirring 8min, adds hydrogen peroxide, continues stirring 20s, obtains mixture slurry；
3. injecting in mould by slurry, stand molding, die surface is covered with overcover, prevents moisture evaporation too fast, causes Material cracks, the demoulding after 24h, naturally stacking maintenance: temperature 20～25 DEG C, curing time 7d.
Ultralight foam concrete dry density 298kg/m3, heat conductivity 0.065W/m K, comprcssive strength 1.58Mpa.
Embodiment 16, a kind of building waste fine powder ultralight foam concrete method of exploitation:
(1) formula
Building waste fine powder (particle diameter≤0.63mm): 100 parts
Slag (S95 level): 150 parts
PP fiber: 1.0 parts
Sodium silicate water glass (modulus 1.0, solid content 35%): 70 parts
Hydrogen peroxide (technical grade, solid content 30%): 8 parts
Calcium stearate (technical grade): 0.5 part
Water: 25 parts.
(2) preparation process
1. toward mixer adds building waste fine powder, slag, fiber, these solid powder of calcium stearate as foam stabilizer Material, stirs 25min, obtains mixed powder；
2. in blender, add waterglass and water, after stirring 8min, add the mixed powder that 1. step obtains, stirring 8min, adds hydrogen peroxide, continues stirring 20s, obtains mixture slurry；
3. injecting in mould by slurry, stand molding, die surface is covered with overcover, prevents moisture evaporation too fast, causes Material cracks, the demoulding after 24h, naturally stacking maintenance: temperature 20～25 DEG C, curing time 28d.
Ultralight foam concrete dry density 290kg/m3, heat conductivity 0.066W/m K, comprcssive strength 1.51Mpa.
Embodiment 17, a kind of building waste fine powder ultralight foam concrete method of exploitation:
(1) formula
Building waste fine powder (particle diameter≤0.63mm): 100 parts
Slag (S95 level): 150 parts
PP fiber: 1.0 parts
Sodium silicate water glass (modulus 1.0, solid content 35%): 70 parts
Hydrogen peroxide (technical grade, solid content 30%): 8 parts
Calcium stearate (technical grade): 0.5 part
Water: 25 parts
(2) preparation process
1. toward mixer adds building waste fine powder, slag, fiber, these solid powder of calcium stearate as foam stabilizer Material, stirs 25min, obtains mixed powder；
2. in blender, add waterglass and water, after stirring 8min, add the mixed powder that 1. step obtains, stirring 8min, adds hydrogen peroxide, continues stirring 20s, obtains mixture slurry；
3. injecting in mould by slurry, stand molding, die surface is covered with overcover, prevents moisture evaporation too fast, causes Material cracks, the demoulding after 24h, naturally stacking maintenance: temperature 25～35 DEG C, curing time 7d.
Ultralight foam concrete dry density 305kg/m3, heat conductivity 0.068W/m K, comprcssive strength 1.49MPa
Comparative example 1
" slag (S95 level): 150 parts " in embodiment 15 is changed to " slag (S95 level): 250 parts ", and remaining is same as implementing Example 15.
Gained ultralight foam concrete dry density 398kg/m3, heat conductivity 0.086W/m K, comprcssive strength 1.78MPa.
Comparative example 2
" slag (S95 level): 150 parts " in embodiment 15 is changed to " slag (S95 level): 50 parts ", and remaining is same as implementing Example 15.
Gained ultralight foam concrete dry density 240kg/m3, heat conductivity 0.071W/m K, comprcssive strength 0.20MPa.
Comparative example 3
" sodium silicate water glass (modulus 1.0, solid content 35%): 70 parts " in embodiment 15 is changed to " sodium silicate water glass Glass (modulus 1.0, solid content 35%): 50 parts ", remaining is same as embodiment 15.
Gained ultralight foam concrete dry density 355kg/m3, heat conductivity 0.088W/m K, comprcssive strength 1.42MPa.
Comparative example 4
" sodium silicate water glass (modulus 1.0, solid content 35%): 70 parts " in embodiment 15 is changed to " sodium silicate water glass Glass (modulus 1.0, solid content 35%): 160 parts ", remaining is same as embodiment 15.
Gained ultralight foam concrete dry density 315kg/m3, heat conductivity 0.081W/m K, comprcssive strength 1.78MPa.
Comparative example 5
" hydrogen peroxide (technical grade, solid content 30%): 8 parts " in embodiment 15 is changed to that " (technical grade, admittedly contain for hydrogen peroxide Amount 30%): 6 parts ", remaining is same as embodiment 15.
Gained ultralight foam concrete dry density 365kg/m3, heat conductivity 0.091W/m K, comprcssive strength 1.65MPa.
Comparative example 6
" hydrogen peroxide (technical grade, solid content 30%): 8 parts " in embodiment 15 is changed to that " (technical grade, admittedly contain for hydrogen peroxide Amount 30%): 20 parts ", remaining is same as embodiment 15.
Gained ultralight foam concrete dry density 265kg/m3, heat conductivity 0.070W/m K, comprcssive strength 0.35MPa.
Comparative example 7
" PP fiber: 1.0 parts " in embodiment 15 is changed to " PP fiber: 2.5 parts ", and remaining is same as embodiment 15.
Gained ultralight foam concrete dry density 295kg/m3, heat conductivity 0.078W/m K, comprcssive strength 1.34Mpa.
Comparative example 8
" water: 25 parts " in embodiment 15 is changed to " water: 10 parts ", and remaining is same as embodiment 15.
Gained ultralight foam concrete dry density 325kg/m3, heat conductivity 0.082W/m K, comprcssive strength 1.55MPa.
Comparative example 9
" water: 25 parts " in embodiment 15 is changed to " water: 30 parts ", and remaining is same as embodiment 15.
Gained ultralight foam concrete dry density 315kg/m3, heat conductivity 0.073W/m K, comprcssive strength 1.20MPa.
Comparative example 10
" adding hydrogen peroxide, continue stirring 40s " is changed to by embodiment 15 " adds hydrogen peroxide, continue stirring 20s ", its More than be same as embodiment 15.
Gained ultralight foam concrete dry density 365kg/m3, heat conductivity 0.096W/m K, comprcssive strength 1.78MPa.
Comparative example 11
" adding hydrogen peroxide, continue stirring 5s " is changed to by embodiment 15 " adds hydrogen peroxide, continue stirring 20s ", its More than be same as embodiment 15.
Gained ultralight foam concrete dry density 288kg/m3, heat conductivity 0.083W/m K, comprcssive strength 0.88MPa.
Finally, in addition it is also necessary to be only several specific embodiments of the present invention it is noted that listed above.Obviously, this Bright it is not limited to above example, it is also possible to have many deformation.Those of ordinary skill in the art can be from present disclosure The all deformation directly derived or associate, are all considered as protection scope of the present invention.

Claims (4)

1. the method utilizing building waste fine powder to develop ultralight foam concrete, is characterized in that described concrete material is by following heavy The one-tenth of amount part is grouped into:
Building waste fine powder: 100 parts
Slag: 80～200 parts
Fiber: 0～2.0 part
Waterglass: 70～100 parts
Hydrogen peroxide: 8～15 parts
Foam stabilizer: 0.5～1 part
Water: 15～25 parts.
The method utilizing building waste fine powder to develop ultralight foam concrete the most according to claim 1, is characterized in that:
Described building waste fine powder is added through broken by least one in the clay brick discarded, tile, concrete, stone, glass Work forms, particle diameter≤0.63mm；
Described slag is S95 level slag；
Described fiber is the one in PP fiber, PVA fiber, glass fibre；
Described waterglass is sodium silicate water glass, modulus 1.0～2.0, solid content 25～35%；
Described hydrogen peroxide is industrial grade hydrogen peroxide, solid content 30%；
Described foam stabilizer is technical grade calcium stearate or sodium stearate.
The preparation method utilizing building waste fine powder to develop ultralight foam concrete the most according to claim 1 and 2, it is special Levy is to comprise the steps:
1), add, in mixer, the solid powder being made up of building waste fine powder, slag, fiber, foam stabilizer, uniformly mix 10 ～30min, obtain mixed powder；
2), in blender, waterglass and water are added, uniformly after mixing 5～10min；It is subsequently added into the mixed powder that 1. step obtains Body, uniformly mixing 2～10min；Add hydrogen peroxide, continue mixing 10～30s, obtain mixture slurry；
3), injecting in mould by mixture slurry, stand molding, die surface is covered with to prevent the overcover of moisture evaporation, and 22 ～the demoulding after 26h, maintenance, ultralight foam concrete.
The preparation method utilizing building waste fine powder to develop ultralight foam concrete the most according to claim 3, its feature Be: described step 3) maintenance be optionally following a kind of mode:
1. steam press maintenance: temperature 100～200 DEG C, pressure 0.2～1.0MPa, the time 3～8h；2. fog room maintenance: temperature 20～ 25 DEG C, humidity >=90%RH, curing time 3～28d；The most naturally stacking maintenance: temperature 5～35 DEG C, curing time 3～28d.
CN201610615867.7A 2016-07-28 2016-07-28 Utilize the method that building waste fine powder develops ultralight foam concrete Pending CN106242614A (en)

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Cited By (9)

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CN106830979A (en) * 2017-02-24 2017-06-13 天津市建筑工程质量检测中心 A kind of imitative volcanic rock porous material
CN106866171A (en) * 2017-02-24 2017-06-20 天津市建筑工程质量检测中心 A kind of preparation method of imitative volcanic rock porous material
CN106962250A (en) * 2017-03-29 2017-07-21 宋宇 A kind of artificial reef disk of utilization urban building waste manufacture
CN108975797A (en) * 2018-09-17 2018-12-11 佛山朝鸿新材料科技有限公司 A kind of preparation method of ultralight foam concrete
CN110734256A (en) * 2019-11-15 2020-01-31 扬州大学 foam concrete doped with recycled brick powder and preparation method thereof
CN112645656A (en) * 2020-12-28 2021-04-13 深圳市华威环保建材有限公司 Decoration waste base high-strength foam concrete and preparation method thereof
CN113149580A (en) * 2021-05-10 2021-07-23 上海建工建材科技集团股份有限公司 Regenerated foam concrete and preparation method thereof
CN113896462A (en) * 2021-10-12 2022-01-07 华北水利水电大学 Method for strengthening cold-bending thin-wall steel column based on geopolymer foam concrete
CN114477940A (en) * 2022-01-24 2022-05-13 湖南工程学院 Construction waste foam concrete and preparation method and application thereof

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CN102167546A (en) * 2010-12-13 2011-08-31 广东龙湖科技有限公司 Zeolite-like lightweight heat preservation and sound insulation board and production method thereof
CN102701656A (en) * 2012-06-21 2012-10-03 重庆大学 Metakaolin-based polymer foam concrete and preparation method thereof
CN105645901A (en) * 2015-12-30 2016-06-08 浙江大学 Light-weight heat insulation plate prepared from building rubbish regeneration fine powder and preparation method thereof

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CN102167546A (en) * 2010-12-13 2011-08-31 广东龙湖科技有限公司 Zeolite-like lightweight heat preservation and sound insulation board and production method thereof
CN102701656A (en) * 2012-06-21 2012-10-03 重庆大学 Metakaolin-based polymer foam concrete and preparation method thereof
CN105645901A (en) * 2015-12-30 2016-06-08 浙江大学 Light-weight heat insulation plate prepared from building rubbish regeneration fine powder and preparation method thereof

Cited By (11)

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Publication number Priority date Publication date Assignee Title
CN106830979A (en) * 2017-02-24 2017-06-13 天津市建筑工程质量检测中心 A kind of imitative volcanic rock porous material
CN106866171A (en) * 2017-02-24 2017-06-20 天津市建筑工程质量检测中心 A kind of preparation method of imitative volcanic rock porous material
CN106830979B (en) * 2017-02-24 2020-06-26 天津市建筑工程质量检测中心有限公司 Volcanic rock-imitated porous material
CN106962250A (en) * 2017-03-29 2017-07-21 宋宇 A kind of artificial reef disk of utilization urban building waste manufacture
CN106962250B (en) * 2017-03-29 2019-11-15 宋宇 A kind of artificial reef disk manufactured using urban building waste
CN108975797A (en) * 2018-09-17 2018-12-11 佛山朝鸿新材料科技有限公司 A kind of preparation method of ultralight foam concrete
CN110734256A (en) * 2019-11-15 2020-01-31 扬州大学 foam concrete doped with recycled brick powder and preparation method thereof
CN112645656A (en) * 2020-12-28 2021-04-13 深圳市华威环保建材有限公司 Decoration waste base high-strength foam concrete and preparation method thereof
CN113149580A (en) * 2021-05-10 2021-07-23 上海建工建材科技集团股份有限公司 Regenerated foam concrete and preparation method thereof
CN113896462A (en) * 2021-10-12 2022-01-07 华北水利水电大学 Method for strengthening cold-bending thin-wall steel column based on geopolymer foam concrete
CN114477940A (en) * 2022-01-24 2022-05-13 湖南工程学院 Construction waste foam concrete and preparation method and application thereof

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