CN105060785B - Waste and old polypropylene fiber rubber regeneration concrete and preparation method thereof - Google Patents
Waste and old polypropylene fiber rubber regeneration concrete and preparation method thereof Download PDFInfo
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- CN105060785B CN105060785B CN201510475516.6A CN201510475516A CN105060785B CN 105060785 B CN105060785 B CN 105060785B CN 201510475516 A CN201510475516 A CN 201510475516A CN 105060785 B CN105060785 B CN 105060785B
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- 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
Abstract
The present invention is a kind of waste and old polypropylene fiber rubber regeneration concrete and preparation method thereof, and it is made up of 1 10 parts of polypropylene fibre, 5 20 parts of rubber powder, 0 1600 parts of regenerated coarse aggregate, 0 1600 parts of stone, 300 500 parts of sand, 300 500 parts of cement, 150 300 parts of water, 50 100 parts of additive.This waste and old polypropylene fiber rubber regeneration concrete can be applied in road construction, reduce road noise and vibrations, increase automobile tire and the buffer distance of road collision, increase the elasticity and toughness of concrete road surface.The polypropylene fibre that uses simultaneously, most of rubber powder is polypropylene fibre clothing and waste tires etc., not only reduce pollution and occupy cultivated land area of these discarded objects to environment, and the elasticity and toughness of concrete can be improved, reduce concrete road surface because of crack caused by difference variation, therefore not only environmental protection but also there is high value of practical in application.
Description
Technical field
The present invention relates to building material technical field, specifically a kind of waste and old polypropylene fiber rubber regeneration concrete and its
Preparation method.
Background technology
With the rapid development of economy, clothes industry and automobile industry have become the second largest production after building trade
Industry, in people's daily life renewal frequency it is maximum for clothing, and most commonly used raw material is polypropylene fibre in modern clothing,
The processing mode for abandoning clothing is generally burned and buried, and substantial amounts of toxic gas can be produced by burning, and environment be caused seriously
Harm；And when being buried to it, the polypropylene fibre resolving time is longer, and larger pollution is produced to soil after decomposition, by it
The ductility and toughness of concrete can be strengthened by being added to when in concrete.And proportion of goods damageds highest is tire in automobile industry, wherein
Junked tire be recycled make new tire quantity it is few, the use of the most place of waste tire is plastic cement race track, also has
Rubber concrete is made by being added to after waste tire crushing and screening in concrete, but main or burning disposal.Will be discarded
The mechanical and physical character of concrete can be improved by being added to after tire crushing and screening in concrete, can mainly improve the bullet of concrete
Property, improve the plastic deformation of concrete.And regenerated coarse aggregate is added in concrete can utilize discarded concrete, reduce useless
Abandon occupation of land and the process problem of concrete, improve the comprehensive utilization ratio of concrete, reduce cut into a mountain for quarrying the environmental pollution that brings and
Ecological disruption problem.
Discarded polypropylene fibre, rubber powder and regeneration aggregate are applied to formation waste and old polypropylene fiber in concrete simultaneously
Rubber regeneration concrete, the discarded object of tremendous influence is caused to carry out integrating use to environment these, not only the useless environmental protection of profit, and
And can improves the physical and mechanical property of concrete, and being applied in the engineerings such as road also has noise reduction, improves the effect of environment,
With higher environmental benefit and economic benefit.
Current many correlative studys show that rubber powder and water can be increased by being modified processing to the rubber powder after crushing and screening
The adhesive property of the binder materials such as mud, but the present invention rubber powder that uses is after modification and not modification obtains
Concrete strength is basically identical, and processing is modified to rubber powder undoubtedly and increases the cost of manufacture of concrete, therefore this
Invention does not use modified rubber powder to be prepared.
The content of the invention
It is specifically a kind of useless the invention aims to provide a kind of regeneration concrete being completely newly formulated and preparation method
Old polypropylene fibre rubber regeneration concrete and preparation method thereof.The present invention is for existing regeneration concrete utilization rate is low, performance
The shortcomings of poor, discarded polypropylene fibre and rubber powder and other additives in right amount are added in regeneration concrete, it is mixed to improve regeneration
The physical and mechanical property of soil is coagulated, improves the economy and practicality of regeneration concrete.
The present invention is achieved through the following technical solutions：
A kind of waste and old polypropylene fiber rubber regeneration concrete, is made up of the raw material of following parts by weight：Polypropylene fibre
1-10 parts, rubber powder 5-20 parts, regenerated coarse aggregate 0-1600 parts, stone 0-1600 parts, sand 300-500 parts, cement 300-500
Part, water 150-300 parts, additive 50-100 parts, wherein, the effective length of the polypropylene fibre is 5-50mm, diameter >=
0.05mm, the particle diameter of the rubber powder is 0.25-3mm.
Being particular in that in concrete of the present invention adds discarded polypropylene fibre, rubber powder and regenerated coarse aggregate can be with
Profit is useless, and additive is added in concrete can improve the intensity of concrete.Rubber powder used substitutes sand as thin bone in concrete
The conventional additives such as material, the optional water reducer of additive, silicon ash, the wherein alternative part of cement of silicon ash is as binder materials.
The polypropylene fibre effective length is 5-50mm, diameter >=0.05mm.Although different length are added in concrete
The polypropylene fibre of degree and diameter can improve the ductility and tensile strength and toughness of concrete, but test proof when polypropylene is fine
When dimension length is 5-50mm, diameter >=0.05mm and cement mortar connection effect is best, intensity highest.When polypropylene fibre length compared with
In short-term with cement mortar anchor force deficiency, the concrete tensile strength unobvious of raising, when polypropylene fibre diameter is smaller fiber with
Cement mortar contact area is bigger, but its smaller fibre tensile strength of diameter is lower, and concrete stir when easily stir it is disconnected, because
This experiment, which is drawn, should not use small diameter fibers.And it is added to when length is longer in concrete and is not easy to stretch fiber after stirring
Exhibition, therefore experiment show that the impact of performance of concrete each side is best when using 5-50mm polypropylene fibre.Work as concrete
To strengthening concrete tensile strength DeGrain during a small amount of polypropylene fibre of middle addition, and the amount for adding polypropylene fibre is larger
When concrete slump is relatively low, mobility is poor, therefore the present invention determines to use per cubic meter of concrete by largely testing
Polypropylene fibre amount be 1-10kg, i.e., during 1-10 parts proportioning of above-mentioned polypropylene fibre, the concrete each side that is prepared
The impact of performance is optimal.
The particle diameter of the rubber powder is 0.25-3mm, small with cement mortar contact area when particle diameter is larger, causes tension strong
Degree declines obvious；When particle diameter is smaller, rubber powder and cement mortar contact area are larger, therefore increase cement and water in concrete
Dosage, not only increases cost of manufacture and caused hydration heat of cement is larger, causes concrete cracking.Therefore the present invention passes through
Just finally determination is drawn when the particle diameter of rubber powder is 0.25-3mm for substantial amounts of theory analysis and verification experimental verification, and for preparing to obtain mixes
Coagulate the best performances such as native tensile strength.
Further, the preparation method of the waste and old polypropylene fiber rubber regeneration concrete, comprises the following steps：First
1-10 parts polypropylene fibre, 5-20 parts rubber powder and 300-500 part sand are placed in dry mixing 30s in mixer so that polypropylene is fine
Dimension, rubber powder and sand fully mix；Then again by 0-1600 parts regenerated coarse aggregate, 0-1600 parts stone, 300-500 parts cement,
150-300 parts water and 50-100 part additives are placed in mixer and stir 4-5min, fully stir evenly；Finally obtain described give up
Old polypropylene fibre rubber regeneration concrete.
Using this compound paddling process, fiber, rubber powder and sand are stirred together first, can be by fiber and rubber powder
It is dispersed in sand, next adds other mixs and concrete can stir, and reduces concrete mixing time, matches somebody with somebody
The concrete strength discrete type made is relatively low, farthest improves the quality of institute's concrete batching.
Polypropylene fibre low cost used in the present invention, be applied to can be greatly improved in concrete concrete tensile strength and
Ductility, and there is significant environmental benefit and social benefit.Waste rubber powder used, which is added in concrete, can improve concrete
Elasticity and wearability, strengthen its deformability, dynamic load, which is applied on concrete, can play cushioning effect, avoid concrete road
Brittle break occurs because of dynamic load for face.With under match ratio, waste and old polypropylene fiber rubber regeneration concrete and common coagulation
The compression strength of soil is basically identical, but tensile strength can improve 50-70%, and ductility improves 100-240%, and under fatigue load
It is stronger to recover deformability.
Polypropylene fibre used in the present invention and the other materials collective effect in concrete, add concrete and steel
The bond stress of muscle, reinforcing bar is connected with concrete more preferable, improve the combination property of concrete.
The concrete that the present invention is created has higher tensile strength, ductility and elasticity, is applied in the engineerings such as road
Construction costs can not only be reduced（Reduce concrete usage amount）, extend the road life cycle, also have the performances such as the useless, environmental protection of profit concurrently,
It is one of practice that China realizes resource-conserving friendly environment society.
Following table is mechanical property test result of the present invention：
Note：The volume of polypropylene fibre is the mass fraction that fiber accounts for concrete gross weight in table；Rubber powder volume is occupancy
The mass fraction of sand amount.The ultimate tensile strength that polypropylene fibre rubber regeneration concrete is obtained through experimental test is 0.0002-
0.0003, compressive ultimate strain 0.006-0.0012.
As can be seen from the above table, when in concrete only add polypropylene fibre when concrete tensile strength significantly on
Rise, and with the increase of volume of polypropylene fibre, its tensile strength is increased more obvious, and tensile strength also increases therewith
Add, but its amplitude increased is smaller.The reason for tensile strength strengthens after incorporation polypropylene fibre is due to polypropylene fibre
Tensile strength is far above the tensile strength of concrete, therefore adds its rear tensile strength in concrete and be remarkably reinforced；Compression strength
The reason for enhancing is due to that fiber is uniformly distributed in concrete and concrete generation hoop can be acted on, equivalent to concrete compression
During constrained by other directions, cause concrete crushing strength also to strengthen.
And after rubber powder is added in concrete, under the compression strength and tensile strength of concrete are presented in various degree
Drop, but fall is smaller, and fall is 1-7%.It may thus be appreciated that mixed after rubber powder is added in polypropylene fiber concrete
Solidifying native intensity declines and unobvious, and can also increase its elasticity, its elasticity and ductility is increased 100-200%.
Can be applied in road and municipal works for waste and old polypropylene fiber rubber regeneration concrete of the present invention, also may be used
Applied in building structure.In road engineering, due to road, in normal use, load is dynamic load, during pavement destruction
Mostly due to impact load and fatigue resistance it is poor and produce impact failure and anti-bending strength it is poor and produce curved scissors destroy, therefore
Waste and old polypropylene fiber rubber regeneration concrete can be applied to the ductility and toughness for increasing road surface in road engineering, it is anti-to strengthen it
Curved scissors performance, the durability of concrete road surface is improved, reduce engineering overall life cycle cost, and there is significant environment protection significance.
Most of raw material polypropylene fibre, rubber powder and regenerated coarse aggregate that the present invention uses is polypropylene fibre clothing etc., useless
Abandon tire and discarded concrete is sieved and obtained after crushing, by popularization and application of the present invention into road construction, then can obviously improve
Waste and old clothing, tire processing and discarded concrete stack problem, and greatly road improvement environment, extend the resistance to of concrete road surface
Long property, reduce vehicle and the service life of problem of noise pollution and automobile tire caused by pavement friction vibrations in urban road.
The durability for extending concrete road surface then reduces road maintenance expense, reduce road maintenance and caused by traffic jam issue, tool
There is significant Social benefit and economic benefit.
Embodiment
Embodiment 1
A kind of waste and old polypropylene fiber rubber regeneration concrete, is made up of the raw material of following parts by weight：Polypropylene fibre 3
Part, 8 parts of rubber powder, 378 parts of regenerated coarse aggregate, 882 parts of stone, 378 parts of sand, 331 parts of cement, 169 parts of water, 53 parts of additive,
Wherein, the effective length of the polypropylene fibre is 5-50mm, diameter >=0.05mm, and the particle diameter of the rubber powder is 0.25-
3mm, the regenerated coarse aggregate particle diameter is 5-30mm, grading is good, and the additive is retarder and silicon ash.
The preparation method of above-mentioned waste and old polypropylene fiber rubber regeneration concrete comprises the following steps：It is first that polypropylene is fine
Dimension, rubber powder and sand are placed in dry mixing 30s in mixer so that polypropylene fibre, rubber powder and sand fully mix；Then again will again
Raw coarse aggregate, stone, cement, water and additive are placed in mixer and stir 4-5min, fully stir evenly；Described in finally obtaining
Waste and old polypropylene fiber rubber regeneration concrete.
Embodiment 2
A kind of waste and old polypropylene fiber rubber regeneration concrete, is made up of the raw material of following parts by weight：Polypropylene fibre 5
Part, 10 parts of rubber powder, 378 parts of regenerated coarse aggregate, 882 parts of stone, 455 parts of sand, 405 parts of cement, 160 parts of water, 60 parts of additive,
Wherein, the effective length of the polypropylene fibre is 5-50mm, diameter >=0.05mm, and the particle diameter of the rubber powder is 0.25-
3mm, the additive are water reducer, silicon ash and nano silicon.
The preparation method of above-mentioned waste and old polypropylene fiber rubber regeneration concrete comprises the following steps：It is first that polypropylene is fine
Dimension, rubber powder and sand are placed in dry mixing 30s in mixer so that polypropylene fibre, rubber powder and sand fully mix；Then again will again
Raw coarse aggregate, stone, cement, water and additive are placed in mixer and stir 4-5min, fully stir evenly；Described in finally obtaining
Waste and old polypropylene fiber rubber regeneration concrete.
Embodiment 3
A kind of waste and old polypropylene fiber rubber regeneration concrete, is made up of the raw material of following parts by weight：Polypropylene fibre 7
Part, 10 parts of rubber powder, 375 parts of regenerated coarse aggregate, 875 parts of stone, 483 parts of sand, 468 parts of cement, 155 parts of water, 62 parts of additive,
Wherein, the effective length of the polypropylene fibre is 5-50mm, diameter >=0.05mm, and the particle diameter of the rubber powder is 0.25-
3mm。
The preparation method of above-mentioned waste and old polypropylene fiber rubber regeneration concrete comprises the following steps：It is first that polypropylene is fine
Dimension, rubber powder and sand are placed in dry mixing 30s in mixer so that polypropylene fibre, rubber powder and sand fully mix；Then again will again
Raw coarse aggregate, stone, cement, water and additive are placed in mixer and stir 4-5min, fully stir evenly；Described in finally obtaining
Waste and old polypropylene fiber rubber regeneration concrete.
Embodiment 4
A kind of waste and old polypropylene fiber rubber regeneration concrete, is made up of the raw material of following parts by weight：Polypropylene fibre 8
Part, 12 parts of rubber powder, 330 parts of regenerated coarse aggregate, 770 parts of stone, 472 parts of sand, 480 parts of cement, 147 parts of water, 69 parts of additive,
Wherein, the effective length of the polypropylene fibre is 5-50mm, diameter >=0.05mm, and the particle diameter of the rubber powder is 0.25-
3mm。
The preparation method of above-mentioned waste and old polypropylene fiber rubber regeneration concrete comprises the following steps：It is first that polypropylene is fine
Dimension, rubber powder and sand are placed in dry mixing 30s in mixer so that polypropylene fibre, rubber powder and sand fully mix；Then again will again
Raw coarse aggregate, stone, cement, water and additive are placed in mixer and stir 4-5min, fully stir evenly；Described in finally obtaining
Waste and old polypropylene fiber rubber regeneration concrete.
Embodiment 5
A kind of waste and old polypropylene fiber rubber regeneration concrete, is made up of the raw material of following parts by weight：Polypropylene fibre 1
Part, 15 parts of rubber powder, 855 parts of regenerated coarse aggregate, 300 parts of sand, 355 parts of cement, 150 parts of water, 100 parts of additive, wherein, it is described
The effective length of polypropylene fibre is 5-50mm, diameter >=0.05mm, and the particle diameter of the rubber powder is 0.25-3mm.
The preparation method of above-mentioned waste and old polypropylene fiber rubber regeneration concrete comprises the following steps：It is first that polypropylene is fine
Dimension, rubber powder and sand are placed in dry mixing 30s in mixer so that polypropylene fibre, rubber powder and sand fully mix；Then again will again
Raw coarse aggregate, stone, cement, water and additive are placed in mixer and stir 4-5min, fully stir evenly；Described in finally obtaining
Waste and old polypropylene fiber rubber regeneration concrete.
Embodiment 6
A kind of waste and old polypropylene fiber rubber regeneration concrete, is made up of the raw material of following parts by weight：Polypropylene fibre
10 parts, 5 parts of rubber powder, 1600 parts of regenerated coarse aggregate, 1320 parts of stone, 435 parts of sand, 500 parts of cement, 210 parts of water, additive 72
Part, wherein, the effective length of the polypropylene fibre is 5-50mm, diameter >=0.05mm, and the particle diameter of the rubber powder is 0.25-
3mm。
The preparation method of above-mentioned waste and old polypropylene fiber rubber regeneration concrete comprises the following steps：It is first that polypropylene is fine
Dimension, rubber powder and sand are placed in dry mixing 30s in mixer so that polypropylene fibre, rubber powder and sand fully mix；Then again will again
Raw coarse aggregate, stone, cement, water and additive are placed in mixer and stir 4-5min, fully stir evenly；Described in finally obtaining
Waste and old polypropylene fiber rubber regeneration concrete.
Embodiment 7
A kind of waste and old polypropylene fiber rubber regeneration concrete, is made up of the raw material of following parts by weight：Polypropylene fibre 2
Part, 18 parts of rubber powder, 1232 parts of regenerated coarse aggregate, 1600 parts of stone, 400 parts of sand, 382 parts of cement, 285 parts of water, additive 93
Part, wherein, the effective length of the polypropylene fibre is 5-50mm, diameter >=0.05mm, and the particle diameter of the rubber powder is 0.25-
3mm。
The preparation method of above-mentioned waste and old polypropylene fiber rubber regeneration concrete comprises the following steps：It is first that polypropylene is fine
Dimension, rubber powder and sand are placed in dry mixing 30s in mixer so that polypropylene fibre, rubber powder and sand fully mix；Then again will again
Raw coarse aggregate, stone, cement, water and additive are placed in mixer and stir 4-5min, fully stir evenly；Described in finally obtaining
Waste and old polypropylene fiber rubber regeneration concrete.
Embodiment 8
A kind of waste and old polypropylene fiber rubber regeneration concrete, is made up of the raw material of following parts by weight：Polypropylene fibre 9
Part, 14 parts of rubber powder, 325 parts of stone, 500 parts of sand, 300 parts of cement, 300 parts of water, 50 parts of additive, wherein, the polypropylene
The effective length of fiber is 5-50mm, diameter >=0.05mm, and the particle diameter of the rubber powder is 0.25-3mm.
The preparation method of above-mentioned waste and old polypropylene fiber rubber regeneration concrete comprises the following steps：It is first that polypropylene is fine
Dimension, rubber powder and sand are placed in dry mixing 30s in mixer so that polypropylene fibre, rubber powder and sand fully mix；Then again will again
Raw coarse aggregate, stone, cement, water and additive are placed in mixer and stir 4-5min, fully stir evenly；Described in finally obtaining
Waste and old polypropylene fiber rubber regeneration concrete.
Embodiment 9
A kind of waste and old polypropylene fiber rubber regeneration concrete, is made up of the raw material of following parts by weight：Polypropylene fibre 1
Part, 17 parts of rubber powder, 520 parts of regenerated coarse aggregate, 610 parts of stone, 325 parts of sand, 400 parts of cement, 243 parts of water, 82 parts of additive,
Wherein, the effective length of the polypropylene fibre is 5-50mm, diameter >=0.05mm, and the particle diameter of the rubber powder is 0.25-
3mm。
The preparation method of above-mentioned waste and old polypropylene fiber rubber regeneration concrete comprises the following steps：It is first that polypropylene is fine
Dimension, rubber powder and sand are placed in dry mixing 30s in mixer so that polypropylene fibre, rubber powder and sand fully mix；Then again will again
Raw coarse aggregate, stone, cement, water and additive are placed in mixer and stir 4-5min, fully stir evenly；Described in finally obtaining
Waste and old polypropylene fiber rubber regeneration concrete.
Claims (1)
1. a kind of waste and old polypropylene fiber rubber regeneration concrete, it is characterised in that be made up of the raw material of following parts by weight：It is poly-
It is 5 parts of tacryl, 10 parts of rubber powder, 378 parts of regenerated coarse aggregate, 882 parts of stone, 455 parts of sand, 405 parts of cement, 160 parts of water, outer
Add 60 parts of agent, wherein, the effective length of the polypropylene fibre is 5-50mm, diameter >=0.05mm, the particle diameter of the rubber powder
For 0.25-3mm, the additive is water reducer, silicon ash and nano silicon；
Wherein, raw material polypropylene fibre, rubber powder and regenerated coarse aggregate are respectively polypropylene fibre clothing, waste tire and discarded coagulation
Soil is sieved and obtained after crushing；
Specific preparation method is polypropylene fibre, rubber powder and sand to be placed in into dry mixing 30s in mixer first so that polypropylene
Fiber, rubber powder and sand fully mix；Then regenerated coarse aggregate, stone, cement, water and additive are placed in mixer again and stirred
4-5min is mixed, is fully stirred evenly；Finally obtain described waste and old polypropylene fiber rubber regeneration concrete.
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| CN101381216A (en) * | 2008-10-21 | 2009-03-11 | 广东工业大学 | Method for regenerating aggregate concrete from steel fibre rubber granule modified asphalt |
| CN101774223B (en) * | 2010-01-12 | 2011-11-30 | 广东工业大学 | Method for preparing recycled aggregate concrete from steel fiber rubber and slag |
| CN202416292U (en) * | 2011-10-20 | 2012-09-05 | 广东工业大学 | Impact-resistance steel fiber and rubber modified recycled concrete pile |
| CN104418546A (en) * | 2013-08-23 | 2015-03-18 | 张学花 | Hybrid concrete and preparation method thereof |
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Inventor after: Duan Pengfei Inventor after: Jiang Lu Inventor after: Xu Jiawen Inventor after: Liu Yuanzhen Inventor after: Wang Wenjing Inventor after: Zhao Qiang Inventor after: Chen Shaorong Inventor before: Liu Yuanzhen Inventor before: Wang Wenjing Inventor before: Xu Jiawen Inventor before: Zhao Qiang Inventor before: Duan Pengfei Inventor before: Chen Shaorong |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |