CN105837096A - Concrete production process - Google Patents
Concrete production process Download PDFInfo
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- CN105837096A CN105837096A CN201610166708.3A CN201610166708A CN105837096A CN 105837096 A CN105837096 A CN 105837096A CN 201610166708 A CN201610166708 A CN 201610166708A CN 105837096 A CN105837096 A CN 105837096A
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- granule
- concrete
- milling
- weight portion
- slag
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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
- 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
- C04B18/16—Waste materials; Refuse from building or ceramic industry
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The invention provides a concrete production process. According to the invention, concrete is produced by mixing of the following components: 40-70 parts by weight of road milling waste, 10-20 parts by weight of construction waste made aggregate, 1-15 parts by weight of steel slag micropowder, 15-30 parts by weight of cement, 0.02-0.2 parts by weight of an admixture, and 10-50 parts of water. The milling waste is grading aggregate made from asphalt concrete pavement milling waste. The process can fully reuse pavement milling materials, construction waste and steel scrap so as to obtain desirable concrete at low production cost.
Description
Technical field
The present invention relates to the new production process of a kind of concrete, relate more particularly to a kind of by slag, building
The technique that rubbish and road-surface milling material produce low-cost concrete.
Background technology
Increasing along with marketing concrete, the commerical ready-mixed concrete market competition is growing more intense, commodity
The high profit epoch of Concrete Enterprises become history already.In the face of this situation, reduce commerical ready-mixed concrete
Production cost, can increase commerical ready-mixed concrete competitiveness commercially.The most effective cost
Control, be the key of commerical ready-mixed concrete producer survival and development.
Building waste refers mainly to construction, unit in charge of construction or individual and builds all kinds of structures, building etc.
If, the earth repairing, remove and carry out to produce during house decoraton, waste residue, mortar etc. all kinds of discarded
Thing.The basic composition of the building waste that different types of building structure produces is consistent, and main component includes mud
Soil, be scattered mortar, waste residue, bituminous concrete fragment, piling block remaining armored concrete pile crown,
Cement concrete, pick chisel produce masonry, various old metal, timber, the packing timber of all kinds of building material product
Material, wall insulated board, the waste material that fitment process produces and other garbage.
CN101343852A discloses a kind of method utilizing steel slag to manufacture highway concrete, its step
Suddenly: (1) uses steel slag filling roadbed；(2) fill core concrete that slag is filling roadbed need to be controlled, it is ensured that road
The stability of base；(3) slag railway embankment should use vibrated roller layered rolling, and when rolling, slag should be located
In the range of optimum moisture content, use the method for test section test to determine and suitably roll facility, use
Maximum dry density and optimum moisture content calculate standard as the compactness that slag is filling roadbed；(4) steel slag filled-up road embankment
Cross-sectional design, including depth of fill, side slope of embankment ratio of slope, fill thickness, closedtop layer, underseal layer,
Interlayer, bank protection and drainage system.
CN103467014A discloses a kind of concrete, and including following components, each component is according to weight portion
It is respectively as follows: cement 180～280 weight portion；Breeze 50～70 weight portion；Flyash 50～80 weight portion；
Stone 920～980 weight portion；Chip 700～750 weight portion；Sand 100～200 weight portion；Water 170～
200 weight portions；Water reducer 5～9 weight portion；CTF Concrete synergist 1.8～2.5 weight portion.
CN105152566A discloses a kind of concrete additive, including the raw material of following parts by weight:
Flyash 4～16 parts, silicon dioxide powder 4～10 parts, polypropylene fibre 4～16 parts, calcium powder 1～9 parts,
Lignin sulfonic acid calcium powder 1～9 parts, acrylic emulsion 4～10 parts.
CN103524096A discloses a kind of fiber concrete, described fiber concrete component and weight portion
As follows: aggregate: 2.5-30%；Concrete: 20-90%；Steel fibre or carbon fiber: 1-20%；Additional
Agent: 1-10%；Polystyrene fiber: 0-10%.
CN105060752A discloses that a kind of activity is higher, the concrete admixture that cost of manufacture is lower,
The raw material of concrete admixture includes cobble powder, flyash, agstone, described cobble powder, fine coal
Ash, agstone mix homogeneously.
CN103819148A discloses a kind of steel slag concrete, composed of the following components: cement, water,
Weight crystal sand, stone, sintered balls, how series high-efficiency water-reducing agent, extender, flyash.
CN103482938A discloses a kind of anti-crack concrete, and component and the content of anti-crack concrete are as follows:
1m3Containing cement 220-480kg, fine aggregate 680-740kg, coarse aggregate 650-800kg, rubber in concrete
Glue granule 220-415kg, flyash 12-45kg, waste polystyrene foam granule 10-35kg, water
160-190kg, additive 4.5-8.0kg, breeze 3.5-6.5kg.
" research of middle-and-low strength concrete low-cost and high-performance ", Ma Baoguo etc., concrete, 2004 (8):
45-46, discloses a kind of middle-and-low strength concrete C20-C50, it is indicated that high performance and production cost are mesh
Front Concrete Industry is badly in need of the key issue solved, and by research, further points out flyash, breeze multiple
Mix replacement Portland cement 40%～60%, it is possible to be effectively improved concrete work, endurance quality,
Production cost reduces by 6～7 yuan/m simultaneously3。
Along with the fast development of highway in China cause, the mileage of highway is more and more longer.Some are repaiied in early days
The highway built is faced with overhaul or enlarging, how to utilize top course, the particularly Colophonium damaged
Surface layer is gradually subject to people's attention.
Slag is abandoned as refuse, does not only take up substantial amounts of land resource, also environment is caused pollution.
In order to adapt to the fast development of steel and iron industry, in recent years, how Ge Chan steel state the most will utilize slag
Problem refer in important schedule, and has been achieved for some achievements.Up to the present, slag is comprehensive
Utilization relates generally to following field: returns metallurgy use again, makees cement, make road construction work material, makees agriculture fertile
And acid soil improving agent, for waste water process etc., the research in manufacturing for concrete is less.
If able to be used by described various waste materials, then can rationally reduce the cost of concrete.So
And, how to utilize described waste material to produce the concrete meeting standard-required, then there is many technology barriers,
Bring difficulty to the manufacture of low-cost concrete always.It is new that this area needs a kind of low-cost concrete to produce
Technique.
Summary of the invention
For overcoming above-mentioned technical problem present in prior art, the present inventor is through further investigation and a large amount of
Test, analyzes feature and the interaction relationship of each component, it is provided that techniques below scheme.
In one aspect of the invention, it is provided that a kind of concrete production technology, it is by mixing following component
System produces concrete: the road milling waste material of 40-70 weight portion, 10-20 weight portion is by building waste system
The aggregate obtained, the slag micro powder of 1-15 weight portion, the cement of 15-30 weight portion, 0.02-0.2 weight portion
Additive, and the water of 10-50 part；Described milling waste material is for be prepared by asphalt concrete pavement milling waste material
Graded aggregate.
The inventors discovered that, containing more Colophonium in road milling waste material, especially road-surface milling waste material,
Therefore, it is possible to slag micro powder realizes preferably cladding, it is enable to effectively completely cut off with oxygen, it is to avoid
The oxidation of slag.
Optionally, this concrete prepare the enhanced carbon fiber also comprising 0.1-2.0 weight portion in raw material.Institute
The surface stating carbon fiber preferably is coated strengthening with modified epoxy.
In a preferred embodiment, the described aggregate prepared by building waste is by by building waste
Rhizoma Begoniae Willsonii, blue bricks, watt and/or cullet be crushed to the granule that particle diameter is 1-20mm, preferably 5-18mm
And obtain.
Preferably, the described graded aggregate prepared by asphalt concrete pavement milling waste material is following by including
The method of step obtains:
(1) asphalt concrete pavement carrying out milling, ground floor milling thickness is 2-6cm, second layer milling
Plane thickness is 7-10cm；
(2) ground floor milling material is sieved, collect the granule of 10-30mm, will be greater than 30mm
Grain breakage after again sieve, it is thus achieved that the granule of 10-30mm, be denoted as granule A；Will be less than 10mm
Powder collection standby, this granule is denoted as granule B；
(3) crushing second layer milling material, the granule of 10-20mm is collected in screening, is denoted as granule C,
By granule A, granule B and granule C with (40-50): (5-10): the weight ratio of (20-30) carries out level compounding
Close, it is thus achieved that graded aggregate.
In the present invention, fully take into account ground floor milling material and the composition of second layer milling material and character,
It is carried out grating with described specific particle diameter and ratio, makes the milling material of various particle diameter be capable of fully
Performance complement, in concrete, be such as capable of dense packing effect, make the concrete prepared have higher
Intensity.And for example, ground floor milling material has higher bitumen content, the most broken, has stronger
Toughness, can use greater particle size, second layer milling material to contain more sandstone, have higher intensity.
Compared with simply being pulverized by road-surface milling material with prior art, this grading method of the present invention can make coagulation
The intensity of soil improves more than 1 times.
It is particularly preferred that in the grating of step (3) mixes, be additionally added splitting slowly of 0.5-1.5 weight portion
Fast solidifying cationic emulsified asphalt.
Described emulsified asphalt is preferably through using N-[2-hydroxyl-3-NPE] propyl group front three
Ammonium chloride carries out emulsifying as emulsifying agent to Colophonium and prepares.The inventors discovered that, when using this emulsifying agent
When preparing emulsified asphalt, it is possible to realize bigger emulsifying effectiveness with minimum consumption, make Colophonium have relatively
Good regeneration effect.
Described slag micro powder is preferably by grinding acquisition by slag, and it preferably has greater than 1500m2/ kg's
Specific surface area.
Described slag is preferably past the slag processed, more than 80% and element silicon of calcium constituent contained therein
More than 60% with larnite form exist, described slag is processed by following steps:
(1) slag is ground, until specific surface area is more than 1500m2/kg；With
(2) slag after grinding calcines 10-20 at a temperature of 600-900 DEG C, preferably 12-16 hour,
It is cooled to room temperature the most under field conditions (factors).
It is further preferred that the slag after the calcining described step (2) obtained at siliceous salt and/or contains
Immersion more than 5 days in the aqueous solution of aluminium salt, preferably more than 10 days, described siliceous salt or the solution of aluminium containing salt
Can be (NH4)2SiO3Or NH4[Al(OH)4] the aqueous solution of 20-50 weight %.The inventors discovered that,
Wherein NH4 +Existence can strengthen the slag absorption to Si and Al, thus further enhance the work of slag
Sex index, thus be conducive to strengthening the intensity of the concrete prepared.
It addition, in the present invention, by grinding, unbodied slag can be made to be changed into major part in knot
Crystalline state, crystalline phase is mainly larnite and iron oxides, such that it is able to significantly improve its hydration activity index,
Generally can improve more than 10%.Additionally, levigating steel slag can also reduce the uneasiness of free CaO and MgO
Qualitative.
Preferred high silicon and the slag of high aluminium content in the present invention, be more beneficial for carrying out and the slag of above-mentioned reaction
Stable and densification.
In the present invention, described concrete admixture particularly preferably comprises or by making following monomer (I)
The copolymer obtained with monomer (II) copolymerization:
(I)
Wherein R1For the alkyl of C1-C6, such as ethyl, R2For the alkyl of C2-C8, such as propyl group, n
Integer for 3-6；With
(II) α, β-aromatics unsaturated carboxylic acid；
Wherein the weight ratio of monomer (I) and (II) is 60-90:10-40, the Weight-average molecular of described copolymer
Amount is 600-1800.
In the structure of described monomer (I), the existence of the ethoxy unit of repetition further enhancing coagulation
The water-reducing property of soil, thus overcome and subtracted by reworked material (particularly road milling material) prepared concrete
The defect that aqueous is not enough.
Most preferably, described α, β-aromatics unsaturated carboxylic acid has a following chemical structural formula:
Find by replacing at two metas of phenyl ring F, due to electronic effect, replace with single F or non-take
Compare for form, the water-reducing property of copolymer can be further enhanced, such that it is able in Concrete
The described additive adding as little as 0.01 weight % just can realize required water-reducing property.
This additive polymer with excellent water-reducing property of the present invention not yet has report.
The polymerization that polymerization can use this area conventional is carried out, such as polymerisation in bulk, solution
Polymerization, emulsion polymerization or suspension polymerisation.
The present inventor finds through research, by adding such additive, it is provided that excellent diminishing
Performance, prevents the mobility of concrete from reducing over time, is very beneficial in concrete fills carrying out
Construction, and makes it possible to effectively reduce the use of cement, overcomes the water-reducing property of reworked material and intensity not
The defect of foot so that part intensity height constructed by concrete, meets necessary requirement.
Described modified epoxy compound is preferably the epoxy resin compound that silicone compounds is modified.
It is particularly preferred that the most lower compound shown in formula (III) of described silicone compounds:
Wherein, Me represents methyl, and R is ethyl or propyl group, preferably ethyl, and n is 5-20, is preferably
8。
When using this silicone compounds to be modified, it is possible to make epoxy resin by loose linear junction configuration
Become firm closely network structure, this network structure and then can effectively be coated with and fixed carbon fiber, and
Make can be formed between carbon fiber crosslinking, thus the intensity of greatly Concrete Structure.After tested, with this
The carbon fiber of the modified epoxy coating of inventive method, its hot strength is ordinary epoxy resin coating
About 2.3 times of carbon fiber.
Detailed description of the invention
By specific examples below and comparative example, further describe the present invention, but embodiment is only used for
Illustrate, the scope of the present invention can not be limited.
In the present invention, properties test is referred to following standard and carries out: 1, GB/T 1346 " water
Mud consumptive use of water normal consistence, setting time, the stability method of inspection "；2, cement water reducing agent quality mark
Standard and test method JGJ 56-84；With 3, the JTGE51-2009 highway stabilized with inorganic binder testing of materials
Code.
Embodiment 1
The preparation of concrete admixture
The chemical structural formula of monomer (I) is:
Wherein R1For methyl, R2For ethyl, n is 5, and this monomer can be by by Polyethylene Glycol and methyl
Base acrylic acid carries out being esterified according to conventional esterification procedures, then by esterification products with ethyoxyl chlorine according to routine
Eliminate reaction to prepare, or can be directly commercially available from Sigma-Aldrich company；
The chemical structural formula of monomer (II) is:
This monomer is equally available commercially from Sigma-Aldrich company；
Use emulsion polymerization, in the 500mL round-bottomed flask with mechanical stirring device, add 80g mono-
Body (I) and 13g monomer (II) and 200mL deionized water, under stirring, logical nitrogen, is subsequently adding 0.1g
Ammonium persulfate., as initiator, is warming up to polymerization temperature, and polymerization temperature is 80 DEG C, keeps reaction 4 hours,
Reclaim polymerizate after terminating reaction, be about 1650 through measuring the weight average molecular weight of gained copolymer.
Embodiment 2
Prepared concrete by the mixing of following component: the road milling waste material of 50 weight portions, 15 weight portions by
Masonry in building waste crushes prepared aggregate, and its mean diameter is about 15mm, the steel of 10 weight portions
Slag micropowder, the cement of 20 weight portions, the additive of embodiment 1 preparation of 0.03 weight portion, and 30 parts
Water；Described milling waste material is the graded aggregate prepared by asphalt concrete pavement milling waste material；Described by
The graded aggregate that asphalt concrete pavement milling waste material prepares is obtained by following steps: (1) is to 107 states
The asphalt concrete pavement to be renovated in road carries out milling, and ground floor milling thickness is 5cm, second layer milling
Thickness is 10cm；(2) ground floor milling material is sieved, collect the granule of 10-30mm, will be big
Again sieve after the grain breakage of 30mm, it is thus achieved that the granule of 10-30mm, be denoted as granule A；
By standby for the powder collection less than 10mm, this granule is denoted as granule B；(3) second layer milling material is entered
Row is broken, and the granule of 10-20mm is collected in screening, is denoted as granule C, by granule A, granule B and granule
C carries out grating mixing with the weight ratio of 50:10:25, it is thus achieved that graded aggregate.Described slag be from
The steelmaking slag of Shougang Group, its specific surface area is 1700m2/kg。
According to standard Road Design specification, described concrete material is carried out making as basic unit on highway,
Test its 7d comprcssive strength.Through measuring, its 7d comprcssive strength is 3.88MPa, complies fully with the most public
The road requirement to basic unit's 7d comprcssive strength；Meanwhile, recording its water reducer shrinkage ratio (%) is 82%.
Comparative example 1
Repeating the operation of embodiment 2, difference is to use conventional commercial polycarboxylic acid series high-performance diminishing
Agent concrete admixture, recording its water reducer shrinkage ratio (%) is 98%..
Comparative example 2
Repeat the operation of embodiment 2, the difference is that only that the specific surface area of slag is 700m2/kg.Survey
Trying its 7d comprcssive strength is 2.41MPa, does not meets highway wanting the 7d comprcssive strength of upper basic unit
Ask, only meet the requirement to traffic base material of the common road such as Class I highway.
By above-described embodiment and comparative example it will be apparent that, by use present invention process, it is possible to make road surface milling
Plane material and steel slag are fully recycled, and fully meet needs with relatively low production cost acquisition
Concrete, such as its intensity improve, and shrinkage factor substantially reduces, enabling reduce consumption and the cement of water
Consumption.Such have the technical effect that previously institute is unexpected.
This written description uses the open present invention of example, including optimal mode, and also makes art technology
Personnel can manufacture and use the present invention.The present invention can patentable scope be defined by the claims,
And other example that those skilled in the art expect can be included.If other example this has do not differ from
The structural element of the literal language of claims, if or other example this include and claim
The literal language of book is without the equivalent structure element of substantial differences, and other example the most this is intended to be in right
Within the scope of claim.Under not resulting in inconsistent degree, by with reference to by herein with reference to
It is incorporated herein in place of all references.
Claims (6)
1. a concrete production technology, it produces concrete by following component being blended: the road milling waste material of 40-70 weight portion, the aggregate that 10-20 weight portion is prepared by building waste, the slag micro powder of 1-15 weight portion, the cement of 15-30 weight portion, the additive of 0.02-0.2 weight portion, and the water of 10-50 part；Described milling waste material is the graded aggregate prepared by asphalt concrete pavement milling waste material.
Concrete production technology the most according to claim 1, the wherein said graded aggregate prepared by asphalt concrete pavement milling waste material is obtained by the method comprised the following steps:
(1) asphalt concrete pavement carrying out milling, ground floor milling thickness is 2-6cm, and second layer milling thickness is 7-10cm；
(2) ground floor milling material is sieved, collect the granule of 10-30mm, again sieve after will be greater than the grain breakage of 30mm, it is thus achieved that the granule of 10-30mm, be denoted as granule A；By standby for the powder collection less than 10mm, this granule is denoted as granule B；
(3) second layer milling material is crushed, the granule of 10-20mm is collected in screening, it is denoted as granule C, by granule A, granule B and granule C with (40-50): (5-10): the weight ratio of (20-30) carries out grating mixing, it is thus achieved that graded aggregate.
Concrete production technology the most according to claim 2, during wherein the grating in step (3) mixes, be additionally added 0.5-1.5 weight portion splits fast solidifying cationic emulsified asphalt slowly.
Concrete production technology the most according to claim 3, wherein said emulsified asphalt prepares by using N-[2-hydroxyl-3-NPE] hydroxypropyltrimonium chloride, as emulsifying agent, Colophonium is carried out emulsifying.
5., according to concrete production technology in any one of the preceding claims wherein, wherein said slag micro powder obtains by being ground by slag, and it has more than 1500m2The specific surface area of/kg.
6. according to concrete production technology in any one of the preceding claims wherein, the wherein said aggregate prepared by building waste by by the Rhizoma Begoniae Willsonii in building waste, blue bricks, watt and/or cullet be crushed to the granule that particle diameter is 1-20mm and obtain.
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| CN201610166708.3A CN105837096B (en) | 2016-03-22 | 2016-03-22 | A kind of concrete production technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610166708.3A CN105837096B (en) | 2016-03-22 | 2016-03-22 | A kind of concrete production technology |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106587781A (en) * | 2016-12-20 | 2017-04-26 | 安徽建筑大学 | Steel slag coal gangue composite concrete and preparation method thereof |
| CN106746996A (en) * | 2016-12-20 | 2017-05-31 | 安徽建筑大学 | A kind of slag composite concrete and preparation method thereof |
| CN107489124A (en) * | 2016-08-24 | 2017-12-19 | 葛洲坝集团项目管理有限公司 | A kind of dike, the quick method for dismounting of the asphaltic concrete core wall on dam |
| CN108439851A (en) * | 2018-03-20 | 2018-08-24 | 和县祥龙沥青混凝土有限公司 | A kind of conductive asphalt concrete additive and its preparation |
| CN108911616A (en) * | 2018-07-26 | 2018-11-30 | 淮北百壹领域建筑科技有限公司 | A kind of concrete material construction method |
| CN113121154A (en) * | 2021-04-17 | 2021-07-16 | 中铁十六局集团路桥工程有限公司 | Environment-friendly steel slag hot recycling asphalt mixture |
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| CN104829178A (en) * | 2015-04-21 | 2015-08-12 | 江苏德丰建设集团有限公司 | C30 grade steel-doped slag recycled aggregate self compacting concrete and preparation method thereof |
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| CN104829178A (en) * | 2015-04-21 | 2015-08-12 | 江苏德丰建设集团有限公司 | C30 grade steel-doped slag recycled aggregate self compacting concrete and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489124A (en) * | 2016-08-24 | 2017-12-19 | 葛洲坝集团项目管理有限公司 | A kind of dike, the quick method for dismounting of the asphaltic concrete core wall on dam |
| CN106587781A (en) * | 2016-12-20 | 2017-04-26 | 安徽建筑大学 | Steel slag coal gangue composite concrete and preparation method thereof |
| CN106746996A (en) * | 2016-12-20 | 2017-05-31 | 安徽建筑大学 | A kind of slag composite concrete and preparation method thereof |
| CN106746996B (en) * | 2016-12-20 | 2019-05-31 | 安徽建筑大学 | A kind of steel slag composite concrete and preparation method thereof |
| CN108439851A (en) * | 2018-03-20 | 2018-08-24 | 和县祥龙沥青混凝土有限公司 | A kind of conductive asphalt concrete additive and its preparation |
| CN108911616A (en) * | 2018-07-26 | 2018-11-30 | 淮北百壹领域建筑科技有限公司 | A kind of concrete material construction method |
| CN113121154A (en) * | 2021-04-17 | 2021-07-16 | 中铁十六局集团路桥工程有限公司 | Environment-friendly steel slag hot recycling asphalt mixture |
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| Publication number | Publication date |
|---|---|
| CN105837096B (en) | 2018-04-10 |
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