CN101343166B - Preparation method for impact resistant ecological concrete - Google Patents
Preparation method for impact resistant ecological concrete Download PDFInfo
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- CN101343166B CN101343166B CN2008101168146A CN200810116814A CN101343166B CN 101343166 B CN101343166 B CN 101343166B CN 2008101168146 A CN2008101168146 A CN 2008101168146A CN 200810116814 A CN200810116814 A CN 200810116814A CN 101343166 B CN101343166 B CN 101343166B
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- concrete
- rubber
- aggregate
- cement
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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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/04—Portland 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Disclosed is a preparation method of shock-proof ecological concrete, belonging to the concrete material field. Aiming at the defect of poor shock resistance of common concrete, the preparation method firstly adopts rubber and a cement stone matrix interface modifier to pre-treat rubber aggregates, then mixes and agitates materials such as cement, coarse and fine aggregates, rubber aggregates, water and admixture in a certain proportion evenly, and prepares the concrete after the curing for a certain period of time. The concrete has compositions per cubic meter, in proportion: cement: 350 to 500kg/m<3>; water: 150 to 250kg/m<3>; fine aggregates: 200 to 650kg/m<3>; coarse aggregates: 1000 to 1200kg/m<3>; high-efficient water-reducing agent: 0 to 8kg/m<3>; interface modifier: 1.8 to 6kg/m<3>; and rubber aggregates: 50 to 200kg/m<3>. Compared with the common concrete and common rubber aggregate concrete, the concrete in the invention has advantages of obviously improved shock resistance and excellent concrete workability, and can be widely used for various impact load-bearing structures such as foundation engineering as well as roadbeds and sleepers of trains, and has broad promotion and application prospect.
Description
Technical field
The invention belongs to new concrete material technology field.The preparation method of waste rubber tire particulate concrete material of surface-treated that has been specifically related to a kind of admixture.The concrete shock resistance of this kind is significantly higher than the normal concrete and the surperficial unmodified rubber aggregate concrete of equality strength, and concrete serviceability is good simultaneously.
Background technology
Concrete shock resistance is to estimate a good and bad importance of concrete kinematic behavior.Receive vibration and shock resistance explosion-proof works,, concrete shock resistance is had higher requirement like the foundation works of highway pavement, high antidetonation regional architecture, the roadbed sleeper of train etc.But portland cement concrete is easy to crack in application process, and tensile strength is low, impact resistance is poor, usually causes concrete under the situation that satisfies the ultimate compression strength requirement, still destroys.For addressing this problem; The researchist has carried out a lot of trials both at home and abroad, and the method for the concrete shock resistance of raising commonly used is fiber reinforcement at present, but fiber is also produced through consuming ample resources with itself; Unfriendly in resource, environment; Cost an arm and a leg, and mixing of fiber can cause concrete to be difficult to stir, workability is poor.
Waste old is a kind of of solid trade waste; The great development of rubber industry and automotive industry in recent years; But also produced a large amount of waste rubber materials such as waste rubber tire simultaneously, China's junked tire generation in 2007 also surpasses 100,000,000, wherein has 20% not recycle approximately.Utilize the waste rubber particle as the composition material of cement concrete prepare the rubber aggregate concrete be recycle of waste old important by way of, so the rubber aggregate concrete is a kind of eco-friendly eco-concrete.Existing research shows that with compared with normal concrete, the rubber aggregate concrete has the advantage of many uniquenesses, such as: Young's modulus is low, deformation performance is superior, in light weight, thermal expansivity is low etc.But at present also not about rubber aggregate as the concrete report of a kind of shock resistance, the present invention has inquired into the concrete shock resistance of rubber aggregate, and has proposed the proportioning of its science.In addition, also adopting rubber aggregate---concrete interface properties-correcting agent has carried out the pre-treatment modification to rubber particle surface, has further improved the concrete shock resistance of the rubber aggregate after the optimization design.
Summary of the invention
To the deficiency of normal concrete impact resistance difference, the invention discloses concrete technology of preparing of the good rubber aggregate of a kind of impact resistance and method.Compare with the General Purpose Rubber aggregate concrete with normal concrete, shock resistance significantly improves, and concrete work degree is good.
To achieve these goals, concrete prescription of the present invention is following:
Cement 350～500kg/m
3Water 150～250kg/m
3Fine aggregate 200～295kg/m
3Coarse aggregate 1105～1200kg/m
3Water reducer 4～8kg/m
3Interface modifier 5.4～6kg/m
3Rubber aggregate 150kg/m
3
Wherein following to the quality requirements of each component:
Cement: ordinary Portland cement and silicate cement 32.5 or 42.5;
Coarse aggregate: the rubble of 5～30mm continuous grading or cobble;
Fine aggregate: fineness modulus 2.3～3.0 medium sands;
Rubber aggregate: size distribution is between 2～5mm, and the Outer Tyre or the inner tube of a tyre shred the classification gained;
Water reducer is a polycarboxylic acid series high efficiency water reducing agent;
Interface modifier is styrene-propene acid fat-organo-silicon coupling agent multipolymer, ethene-vinyl acetate resin copolymer, PVA coupling agent mixture, and the quality proportioning is 1: 1: 1;
Get rubber aggregate and interface modifier by above-mentioned proportioning, earlier interface modifier be dissolved in 40～90 ℃ of warm water fully, leave standstill 30 seconds after, drop into rubber aggregate, mix, air-dry pack is for use;
The rubber aggregate that takes by weighing behind cement and the interface modification by above-mentioned proportioning drops into stirrer, stirs;
Take by weighing coarse aggregate, fine aggregate, water reducer input stirrer by above-mentioned proportioning, stir;
Water and smash blanks and moulding and conserving 28～60 days.
Characteristics such as it is good that concrete of the present invention has shock resistance, and intensity is higher, and workability is better are a kind of more satisfactory shock resistance concrete, can be widely used in the structure of the various loads that withstand shocks such as roadbed sleeper of foundation works, train.In addition, this kind concrete can utilize the waste rubber tire in a large number, has characteristics such as environmental protection, is a kind of eco-concrete, and popularizing application prospect is wide.
Embodiment
The General Purpose Rubber aggregate concrete of benchmark normal concrete as a comparison, not process interface modifier processing and proportioning (weight of various materials in every cubic meter of concrete, the units/m of impact resilience rubber aggregate concrete of the present invention
3) and impact resistance see table 1, table 2.Cement is the P.O42.5 ordinary Portland cement, and sand is fineness modulus 2.8 medium sands, and stone is the rubble of 5～25mm continuous grading, the median size 2mm of rubber aggregate, and three kinds of 3mm and 5mm, high efficiency water reducing agent are polycarboxylic acid series high efficiency water reducing agent.The practical implementation method as previously mentioned.
Impact test method adopts the blow bending test method, and the sample dimensions of blow bending test is 100mm * 100mm * 400mm, every group of 6 test specimens.Free-falling hammer is a solid cylinder, cross-sectional diameter 30mm, and tup portion is a sphere, the heavy 1.4kg of hammer.The shock height of free-falling hammer is 400mm.The beam two ends are freely-supported, clear span 340mm.Drop hammer and in the steel hollow cylinder, do the movement of falling object, cylinder is used for controlling the height of drop that drops hammer simultaneously.At the steel plate of a 100mm * 100mm * 10mm of cylinder bottom pad, avoid dropping hammer and directly pound on the beams of concrete surface, prevent that concrete from producing depression and crack.The each impact begins from the free-falling of dropping hammer, and be static fully for finishing to dropping hammer.So repeated multiple times is carried out, and destroys until test specimen.The result evaluation method: (1) incipient crack, beam from leakless to producing microfracture; (2) destroy, claim that impact fracture has taken place beam when the horizontal major fracture of beam is through to the upper surface of beam, whether be through to the destruction that total cross section is judged beam through the reading lens crack that detects by an unaided eye.
The invention provides 6 embodiment, be respectively shock resistance concrete 1-6.Its proportioning and performance are seen table 1 and table 2.Enumerate 4 Comparative Examples for description effect, be respectively the normal concrete 1-2 in the table, and General Purpose Rubber aggregate concrete 1-2.
Table 1 mix proportion
Annotate: in the bracket is the temperature of soluble modified dose of used water, unit degree centigrade.
The concrete performance of table 2
Annotate: be the maintenance fate in the bracket.
Claims (1)
1. the preparation method of a shock proof eco-concrete is characterized in that:
This mix proportion is:
Cement 350～500kg/m
3Water 150～250kg/m
3Fine aggregate 200～295kg/m
3Coarse aggregate 1105～1200kg/m
3Water reducer 4～8kg/m
3Interface modifier 5.4～6kg/m
3Rubber aggregate 150kg/m
3
Wherein following to the quality requirements of each component:
Cement: ordinary Portland cement and silicate cement 32.5 or 42.5;
Coarse aggregate: the rubble of 5～30mm continuous grading or cobble;
Fine aggregate: fineness modulus 2.3～3.0 medium sands;
Rubber aggregate: size distribution is between 2～5mm, and the Outer Tyre or the inner tube of a tyre shred the classification gained;
Water reducer is a polycarboxylic acid series high efficiency water reducing agent;
Interface modifier is styrene-propene acid fat-organo-silicon coupling agent multipolymer, ethene-vinyl acetate resin copolymer, PVA coupling agent mixture, and the quality proportioning is 1: 1: 1;
Get rubber aggregate and interface modifier by above-mentioned proportioning, earlier interface modifier be dissolved in 40～90 ℃ of warm water fully, leave standstill 30 seconds after, drop into rubber aggregate, mix, air-dry pack is for use;
The rubber aggregate that takes by weighing behind cement and the interface modification by above-mentioned proportioning drops into stirrer, stirs;
Take by weighing coarse aggregate, fine aggregate, water reducer input stirrer by above-mentioned proportioning, stir;
Water and smash blanks and moulding and conserving 28～60 days.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101168146A CN101343166B (en) | 2008-07-18 | 2008-07-18 | Preparation method for impact resistant ecological concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101168146A CN101343166B (en) | 2008-07-18 | 2008-07-18 | Preparation method for impact resistant ecological concrete |
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| Publication Number | Publication Date |
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| CN101343166A CN101343166A (en) | 2009-01-14 |
| CN101343166B true CN101343166B (en) | 2012-02-22 |
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| CN2008101168146A Expired - Fee Related CN101343166B (en) | 2008-07-18 | 2008-07-18 | Preparation method for impact resistant ecological concrete |
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Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102267805A (en) * | 2010-06-07 | 2011-12-07 | 中冶建筑研究总院有限公司 | Interface processing agent for cement-based wear resistant material construction |
| CN101898877B (en) * | 2010-08-17 | 2012-05-23 | 重庆大学 | Method for pretreating lightweight aggregate used for internal curing of cement-based materials |
| CN102001848B (en) * | 2010-11-15 | 2012-07-25 | 中南大学 | Steamed high-performance concrete and preparation method thereof |
| CN102249614B (en) * | 2011-05-23 | 2013-01-02 | 上海曹杨建筑粘合剂厂 | Light thermal insulation soundproof damping floor mortar |
| CN102649633A (en) * | 2012-05-04 | 2012-08-29 | 中国十七冶集团有限公司 | Novel post-cast strip concrete |
| CN102864700B (en) * | 2012-09-21 | 2014-10-15 | 江苏高博智融科技有限公司 | Low-carbon macromolecule foam material internal core composite concrete cladding sleeper |
| GB2524045A (en) * | 2014-03-12 | 2015-09-16 | Enviromate Ltd | Construction material and method of manufacturing the same |
| GB2529396B (en) * | 2014-08-15 | 2021-09-01 | Enviromate Ltd | Anti-ballistic Structure |
| CN106478002A (en) * | 2015-09-02 | 2017-03-08 | 国网智能电网研究院 | A kind of vibration insulation and noise reduction rubber concrete and preparation method thereof |
| CN106145815A (en) * | 2016-06-28 | 2016-11-23 | 蚌埠市方阵商品混凝土有限公司 | A kind of shock resistance easy plucking concrete |
| CN108484028B (en) * | 2018-03-23 | 2021-02-09 | 江苏建筑职业技术学院 | Regenerated rubber sound insulation concrete and preparation method thereof |
| CN109721267A (en) * | 2019-01-24 | 2019-05-07 | 天津大学 | A kind of rubber aggregate cement-based material of carbon nanotube enhancing |
| CN109776053A (en) * | 2019-03-27 | 2019-05-21 | 中国人民解放军95538部队 | A kind of frigid plateau region airfield pavement rubber aggregate special concrete |
| CN113526932A (en) * | 2021-09-07 | 2021-10-22 | 中铁十一局集团桥梁有限公司 | Concrete for sleeper |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182157A (en) * | 2007-11-09 | 2008-05-21 | 北京工业大学 | Interface finishing agent improving rubber-cement stone substrate in rubber concrete |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182157A (en) * | 2007-11-09 | 2008-05-21 | 北京工业大学 | Interface finishing agent improving rubber-cement stone substrate in rubber concrete |
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