CN108033740A - A kind of high compressive strength Rubber Concrete and preparation method thereof - Google Patents
A kind of high compressive strength Rubber Concrete and preparation method thereof Download PDFInfo
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- CN108033740A CN108033740A CN201810077432.0A CN201810077432A CN108033740A CN 108033740 A CN108033740 A CN 108033740A CN 201810077432 A CN201810077432 A CN 201810077432A CN 108033740 A CN108033740 A CN 108033740A
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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
- 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
- C04B18/18—Waste materials; Refuse organic
- C04B18/20—Waste materials; Refuse organic from macromolecular compounds
- C04B18/22—Rubber, e.g. ground waste tires
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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
- 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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- Ceramic Engineering (AREA)
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- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
A kind of high compressive strength Rubber Concrete, including concrete base-material, rubber aggregate, steel fibre, water-reducing agent, concrete base-material include nano silicon dioxide；Wherein, concrete base-material includes cementitious material, stone and sand, its mass ratio is 0.9~1.1:0.6~0.9:1.4~1.8；Cementitious material includes cement and nano silicon dioxide；The volume volume of rubber aggregate is 50~100kg/m3；The volume volume of steel fibre is 70~120kg/m3；The quality of water and the mass ratio of cementitious material are 0.28~0.33:1；The quality of water-reducing agent and the mass ratio of cementitious material are 0.9~1.2:100.The compression strength of high compressive strength Rubber Concrete can reach C55 ranks, traditional Rubber Concrete tensile splitting strength of more identical water-cement ratio improves more than 50%, the slump is in more than 60mm, mobility, water retention property are good, save clinker, preparation process is simple and environmentally-friendly, is easy to construct.
Description
Technical field
The invention belongs to building material technical field, and in particular to a kind of high compressive strength Rubber Concrete and its system
Preparation Method.
Background technology
According to statistics, global waste tire burden is up to 6,000,000,000, and by year ends 2015, China's waste tire yield has surpassed
3.3 hundred million are crossed, gross weight already becomes the first in the world waste tire big producer, and China is every up to 12,000,000 tons more than the U.S.
The waste tire that year produces is sharply increased with 8%~10% speed, and to the year two thousand twenty, Chinese waste tire yield will be up to 2000
Ten thousand tons, it has also become the new pollution of ignored one kind in face of us.The various waste old quantity that China recycles at present are seldom,
Recovery utilization rate is only 5%, 3~4 percentage points lower than Foreign Advanced Lerel.With Global Auto industry and transportation
Development, automobile tire usage amount increases sharply, while causes waste tire increasing.
Substantial amounts of waste tire causes " black pollution " more intractable than plastic pollution, while wastes the rubber of preciousness
Glue resource, therefore the recycling of waste rubber goods is increasingly becoming international community's question of common concern.By discarded rubber
Rubber powder is made in tire after Mechanical Crushing, grinding, dedusting, cleaning, and mixing formation rubber concrete in cement concrete is
Realize a kind of effective new way of resource recycling, it is of great advantage to environmental protection.After adding rubber aggregate, the change of concrete
Shape performance, damping noise reduction, shock resistance and fatigue behaviour etc. are substantially improved, but urgent problem to be solved is
Rubber concrete resistance to compression and tensile strength are low.For this problem, many scholars have done grinding on modified rubber aggregate concrete
Study carefully, be included in rubber concrete and add copper ashes, agstone, kaolin and coupling agent etc., but still suffer from some urgently
Solve the problems, such as.For example, method of modifying is single, tension cannot obtain corresponding improve at the same time to compression strength；Modified concrete
Working performance is poor, is not suitable for structural elements；The lifting of intensity is only pursued, coarse aggregate is not used, the universality of engineering is not
Height, for example, fine sand is selected in CN104891886A inventions disclosed patent application " rubber steel fiber reinforced concrete " in configuration process,
Coarse aggregate is not used.
The content of the invention
In order at least solve one of above-mentioned technical problem existing in the prior art, the embodiment of the invention discloses one
Kind high compressive strength Rubber Concrete, the concrete include concrete base-material, rubber aggregate, steel fibre, water-reducing agent, coagulation
Soil matrix material includes nano silicon dioxide.
High compressive strength Rubber Concrete disclosed in some alternative embodiments of the invention, further includes water, wherein：Gelling
The mass ratio of material, stone and sand is 0.9~1.1:0.7~1.2:1.4~1.8；Cementitious material includes cement and nanometer two
Silica；The volume volume of rubber aggregate is 50~100kg/m3；The volume volume of steel fibre is 39~117kg/m3；The matter of water
The mass ratio of amount and the cementitious material is 0.28~0.33:1；The quality of water-reducing agent and the mass ratio of the cementitious material are
0.9~1.2:100.
In high compressive strength Rubber Concrete disclosed in some alternative embodiments of the invention, in cementitious material, cement
Mass content be 97~99%, the mass content of nano silicon dioxide is 1~3%.
In high compressive strength Rubber Concrete disclosed in some alternative embodiments of the invention, the volume volume of steel fibre
For 78~117kg/m3Between.
In high compressive strength Rubber Concrete disclosed in some alternative embodiments of the invention, rubber aggregate is passed through by tire
Obtained after Mechanical Crushing, grinding, dedusting, cleaning, the particle diameter of the rubber aggregate is 1~2mm.
In high compressive strength Rubber Concrete disclosed in some alternative embodiments of the invention, steel fibre is hooked,
Its a diameter of 0.3~0.8mm, length are 30~40mm, and tensile strength is more than 1100N/mm2。
In high compressive strength Rubber Concrete disclosed in some alternative embodiments of the invention, nano silicon dioxide is parent
Water-based nano silicon dioxide.
In high compressive strength Rubber Concrete disclosed in some alternative embodiments of the invention, hydrophilic nano titanium dioxide
The average grain diameter of silicon is that its specific surface area is in 175~245m between 20~40nm2Between/g.
High compressive strength Rubber Concrete disclosed in some alternative embodiments of the invention, water-reducing agent is powdered naphthalene system
High efficiency water reducing agent, water-reducing rate is between 18~28%.
Some embodiments of the invention also disclose a kind of preparation method of high compressive strength Rubber Concrete, including with
Lower step：
A) sand, stone are poured into agitated kettle, pre- stirring, the slow continuous uniform of steel fibre is added, is stirred to steel fibre
It is dispersed to open；
B) rubber aggregate is added, mix is to uniform；
C) nano silicon dioxide is added in cement, stirred evenly, then added in agitated kettle, stirring；
D) water-reducing agent is substantially dissolved in water, is added to by several times in agitated kettle afterwards, stirring, until mixture mixing is equal
It is even.
The preparation method of high compressive strength Rubber Concrete disclosed in some embodiments of the invention, including following step
Suddenly：
A) machine drum body of wetting stirring in advance, agitated kettle is poured into by sand, stone, and pre- stirring 60 seconds, steel fibre is slowly connected
It is continuous to be uniformly added into, stir to steel fibre is dispersed and open；
B) rubber aggregate is at the uniform velocity added, mix is to uniform；
C) nano silicon dioxide is added in cement, stirred evenly, then added in agitated kettle, stirred 60 seconds；
D) water-reducing agent is substantially dissolved in water, is divided afterwards 2~3 times and is added in agitated kettle, is stirred 3~5 minutes, until mixing
Compound is uniformly mixed.
The high compressive strength rubber concrete that preparation method disclosed by the embodiments of the present invention is prepared, utilizes waste tire
As rubber aggregate, resource recycling is realized, significantly increase the compression strength and tensile splitting strength of concrete, improve it
Toughness, and delay the development in crack, compression strength reaches C55 grades, the more traditional Rubber Concrete raising of tensile splitting strength
More than 50%, for the slump in more than 60mm, mobility, water retention property are good, save clinker, and preparation process is simple and environmentally-friendly,
It is easy to construct, the present invention will meet the needs of engineering reality is to concrete high-performance, extend the application of Rubber Concrete
Scope, makes it be applied to structure stress layer, has broken Rubber Concrete since compression strength is low low with tensile splitting strength
And it can be only applied to the limitation of paving material.
Embodiment
Dedicated word " embodiment " herein, any embodiment illustrated by as " exemplary " should not necessarily be construed as being better than or
It is better than other embodiments.The present invention discloses testing performance index in embodiment, unless stated otherwise, using this area routine test
Method.It is to be understood that heretofore described term is only to describe special embodiment, public affairs of the invention are not intended to limit
The content opened.
Unless otherwise stated, technical and scientific terms used herein has the common of the technical field of the invention
The normally understood identical meanings of technical staff.As other not especially dated raw material, reagent, the test methods in the present invention
The usually used raw material and reagent of those skilled in the art, and the experiment side of generally use are referred both to technological means
Method and technological means.
In order to better illustrate present invention, numerous details is given in specific embodiment below.This
Field technology personnel should be appreciated that no some details, and the present invention can equally be implemented.In embodiment, for ability
Certain methods, means, instrument, equipment, raw material composition, molecular structure etc. are not described in detail known to field technique personnel, so as to
In the purport for highlighting the present invention.The number range that the embodiment of the present invention is addressed, typically refers to include number range end value and end
All numerical value within value.More than the numerical value for typically referring to include more than this numerical value and this numerical value.The present invention discloses embodiment and states
And steel fibre volume volume, refer to the ratio between quality and concrete binder volume of steel fibre；The volume volume of rubber aggregate is
Refer to the ratio between quality and concrete binder volume of rubber aggregate.
High compressive strength Rubber Concrete disclosed by the embodiments of the present invention, including concrete base-material, rubber aggregate, steel
Fiber, water-reducing agent and water, wherein concrete base-material include cementitious material, stone and sand, the matter of cementitious material, stone and sand
Amount is than being 0.9~1.1:0.7~1.2:1.4~1.8；Cementitious material includes cement and nano silicon dioxide；The body of rubber aggregate
Product volume is 50~100kg/m3；The volume volume of steel fibre is 39~117kg/m3；The matter of the quality of water and the cementitious material
Amount is than being 0.28~0.33:1, this ratio can also be usually commonly referred to as water-cement ratio by those skilled in the art, can be expressed as
0.28~0.33；The mass ratio of the quality of water-reducing agent and the cementitious material is 0.9~1.2:100.
Rubber is hydrophobic material, and those skilled in the art are usually also referred to as rubber aggregate.Meeting in Rubber Concrete
There are slight void, the compression strength and tensile splitting strength of Rubber Concrete reduce substantially, and the addition of steel fibre can be shown
The tensile splitting strength that ground improves concrete is write, improves its toughness, and delay the development in crack.
Rubber aggregate disclosed by the embodiments of the present invention, is usually obtained by rubber raw materials such as waste and old automobile tires, such as useless
Old tire obtains granulated rubber after Mechanical Crushing, grinding, dedusting, cleaning and gathers materials, as more optimal technical scheme, the rubber
The particle diameter that glue gathers materials is between 1~2mm.
The volume volume of rubber aggregate is usually 50-100kg/m3。
Steel fibre disclosed by the embodiments of the present invention can select hooked steel fibre, fine as optional technical solution, steel
The diameter of dimension is between 0.3~0.8mm, and for length between 30~40mm, tensile strength is more than 1100N/mm2。
The volume volume of steel fibre generally selects 39~117kg/m3, more preferably 78~117kg/m3Between.
The addition of nano material, can constantly promote hydrated reaction of cement, play the role of filling and enhancing to concrete, can
Improve the interfacial transition zone performance and microstructure of concrete to a certain extent, reduce the porosity of Rubber Concrete,
The functioning efficiency of steel fibre is improved, and significantly improves its compression strength and ductility.The addition of nano silicon dioxide improves fiber
With the adhesion strength of mixed mud matrix and improving its dispersiveness, while its surface-active is high, and pozzolanic reaction causes cement mortar
In C-S-H gels in CaO/SiO2Value diminish so that water mudrock structure is finer and close, and can filled rubber gather materials it is mixed
Microvoid in solidifying soil.
The mass content of cement in cementitious material is 97~99%, and the mass content of nano silicon dioxide is 1~3%；
The present invention discloses the mass content for the cement that embodiment is addressed, and refers to cement quality and cementitious material mass ratio, nano-silica
The mass content of SiClx, refers to mass ratio in the quality and cementitious material of nano silicon dioxide, if cementitious material includes cement
And nano silicon dioxide, then the sum of mass content of cement and nano silicon dioxide is 100%；Ability may be selected in cement therein
The cement of field technique personnel's generally use, such as 42.5 Portland cements of P.O；Nano silicon dioxide preferred hydrophilic is received
Rice silica, for example, average grain diameter be between 20~40nm, specific surface area is in 175~245m2Hydrophilic dioxy between/g
SiClx.Meanwhile nano silicon dioxide part is replaced into cement, clinker has been saved, has been reduced environmental pollution.
Water-reducing agent disclosed by the embodiments of the present invention, may be selected powdered naphthalene series high-efficiency water-reducing agent, and more preferred water-reducing rate exists
Water-reducing agent between 18~28%.
In technical solution disclosed by the embodiments of the present invention, special restriction, art technology are not made in the selection to water
Personnel can utilize the water source of generally use, realize technique effect disclosed by the embodiments of the present invention.
The preparation method of high compressive strength Rubber Concrete disclosed by the embodiments of the present invention, comprises the following steps：
A) sand, stone are poured into agitated kettle, pre- stirring, the slow continuous uniform of steel fibre is added, is stirred to steel fibre
It is dispersed to open；Before this step, the moistening step of agitated kettle can be increased；
B) rubber aggregate is added, mix is to uniform；The addition of rubber aggregate can be carried out at the uniform velocity, easy to uniform mixing；
C) nano silicon dioxide is added in cement, stirred evenly, then added in agitated kettle, stirring；
D) water-reducing agent is substantially dissolved in water, is added to by several times in agitated kettle afterwards, stirring, until mixture mixing is equal
It is even.
Intensity detection is carried out using following methods in the embodiment of the present invention.
Preparation of samples method：
High compressive strength Rubber Concrete obtained by the embodiment of the present invention is disposably loaded into die trial, spatula during charging
Plugged and pounded along each die trial wall, then die trial is put on a vibration table, vibrated at twice, scrape off the unnecessary concrete of die trial mouth, so
Smoothed out afterwards with spatula, be put into maintenance 24h in concrete curing box, form removal, finally moves in concrete standard fog room and supported
Shield, takes out after 28 days.
Test method：According to GB/T50081-2002《Standard for test methods of mechanical properties of ordinary concrete》Regulation side
Method, intensity detection is carried out to the test block of fiber nano modification Rubber Concrete.
Ins and outs disclosed by the invention are further described with reference to embodiment, so that those skilled in the art are real
Existing technical solution disclosed by the embodiments of the present invention.
Embodiment 1
It is fine that high compressive strength Rubber Concrete disclosed in the present embodiment 1 includes concrete base-material, rubber aggregate, steel
Dimension, water-reducing agent and water, wherein concrete base-material include cementitious material, stone, sand, and cementitious material includes cement and nano-silica
SiClx, cement quality content are 99%, and the mass content 1% of nano silicon dioxide, cement is 42.5 normal silicate water of P.O
Mud, the average grain diameter of nano silicon dioxide is 40nm, specific surface area 175m2/g.Cement, nano silicon dioxide, stone, sand,
The quality of rubber aggregate, steel fibre and water is respectively 568.26kg, 5.74kg, 630kg, 957kg, 50kg, 39kg and 188kg,
The powdered water-reducing agent of naphthalene system is 5.38kg, and water-reducing rate 26%, the average diameter of steel fibre is 0.4mm, and length is 30~40mm,
The particle diameter of rubber aggregate is 1~2mm.
High compressive strength Rubber Concrete, its preparation method comprise the following steps disclosed in the present embodiment 1：
1) machine drum body of wetting stirring in advance, agitated kettle is poured into by the sand of above-mentioned mass ratio, stone, after stirring 60 seconds in advance,
The slow continuous uniform of steel fibre is added, is stirred 90 seconds, steel fibre is dispersed to be opened, not conglomeration；
2) added by above-mentioned quality than rubber grain uniformly continuous, mix to uniform, stirring 60 seconds；
3) added by the nano silicon dioxide of above-mentioned mass ratio in cement, stirring is added after being stirred with small round shovel
Stirred 60 seconds in pot；
4) the powdered water-reducing agent of above-mentioned mass ratio is substantially dissolved in water, divides afterwards 2 times and be added in agitated kettle, stir
Mix 3 minutes or so, until mixture is uniformly mixed, up to the high compressive strength Rubber Concrete of the present embodiment.
By preparation of samples method disclosed by the invention and test method, the high compressive strength rubber collection of test the present embodiment 1
Expect the working performance of concrete, the gained slump is 63mm, compression strength 55.8Mpa, reaches C55 ranks, tensile strength is
5.2Mpa, compared with comparative example 1,10.93% and 57.57% is respectively increased in compression strength and tensile splitting strength.
Embodiment 2
It is fine that high compressive strength Rubber Concrete disclosed in the present embodiment 2 includes concrete base-material, rubber aggregate, steel
Dimension, water-reducing agent and water, wherein concrete base-material include cementitious material, stone, sand, and cementitious material includes cement and nano-silica
SiClx cement quality content is 98%, and the mass content 2% of nano silicon dioxide, cement is 42.5 normal silicate water of P.O
Mud, the average grain diameter of nano silicon dioxide is 40nm, specific surface area 175m2/g.Cement, nano silicon dioxide, stone, sand,
The quality of rubber aggregate, steel fibre and water is respectively 587.02kg, 11.98kg, 572kg, 931kg, 50kg, 78kg and 196kg,
The powdered water-reducing agent of naphthalene system is 5.57kg, and water-reducing rate 26%, the average diameter of steel fibre is 0.4mm, and length is 30~40mm,
The particle diameter of rubber aggregate is 1~2mm.
High compressive strength Rubber Concrete disclosed in the present embodiment 2, its preparation method reference implementation example 1.
By preparation of samples method disclosed by the invention and measuring method, the high compressive strength rubber collection of test the present embodiment 2
Expect the working performance of concrete, the gained slump is 70mm；Compression strength is 56.7Mpa, reaches C55 ranks, and Split-tension of Rolled is strong
Spend for 4.9Mpa, compared with comparative example 1,12.72% and 48.48% is respectively increased in compression strength and tensile splitting strength.
Embodiment 3
It is fine that high compressive strength Rubber Concrete disclosed in the present embodiment 3 includes concrete base-material, rubber aggregate, steel
Dimension, water-reducing agent and water, wherein concrete base-material include cementitious material, stone, sand, and cementitious material includes cement and nano-silica
SiClx, cement quality content are 97%, and the mass content 3% of nano silicon dioxide, cement is 42.5 normal silicate water of P.O
Mud, the average grain diameter of nano silicon dioxide is 40nm, specific surface area 175m2/g.Cement, nano silicon dioxide, stone, sand,
The quality of rubber aggregate, steel fibre and water be respectively 604.31kg, 18.69kg, 514kg, 905kg, 50kg, 117kg and
204kg, the powdered water-reducing agent of naphthalene system are 5.92kg, water-reducing rate 26%, and the average diameter of steel fibre is 0.4mm, length 30
~40mm, the particle diameter of rubber aggregate is 1~2mm.
High compressive strength Rubber Concrete disclosed in the present embodiment 3, its preparation method reference implementation example 1.
By preparation of samples method disclosed by the invention and measuring method, the high compressive strength rubber collection of test the present embodiment 3
Expect the working performance of concrete, the gained slump is 68mm；Compression strength is 56.0Mpa, reaches C55 ranks, and Split-tension of Rolled is strong
Spend for 5.0Mpa, compared with comparative example 1,11.33% and 51.52% is respectively increased in compression strength and tensile splitting strength.
Embodiment 4
It is fine that high compressive strength Rubber Concrete disclosed in the present embodiment 4 includes concrete base-material, rubber aggregate, steel
Dimension, water-reducing agent and water, wherein concrete base-material include cementitious material, stone, sand, and cementitious material is 42.5 common silicic acid of P.O
Salt cement；Cement, stone, sand, rubber aggregate, the quality of steel fibre and water be respectively 574kg, 630kg, 957kg, 50kg,
39kg and 188kg, the powdered water-reducing agent of naphthalene system are 5.38kg, and water-reducing rate 26%, the average diameter of steel fibre is 0.4mm, long
Spend for 30~40mm, the particle diameter of rubber aggregate is 1~2mm.
High compressive strength Rubber Concrete disclosed in the present embodiment 4, its preparation method reference implementation example 1.
By preparation of samples method disclosed by the invention and test method, the working performance of the concrete of the present embodiment 4 is tested,
The gained slump is 82mm, compression strength 52.8Mpa, tensile strength 3.6Mpa, compared with comparative example 1, compression strength and
3.94% and 9.10% is respectively increased in tensile splitting strength.
Embodiment 5
It is fine that high compressive strength Rubber Concrete disclosed in the present embodiment 5 includes concrete base-material, rubber aggregate, steel
Dimension, water-reducing agent and water, wherein concrete base-material include cementitious material, stone, sand, and cementitious material is 42.5 common silicic acid of P.O
Salt cement；Cement, nano silicon dioxide, stone, sand, rubber aggregate, the quality of steel fibre and water be respectively 599kg,
572kg, 931kg, 50kg, 78kg and 196kg, the powdered water-reducing agent of naphthalene system are 5.57kg, water-reducing rate 26%, steel fibre it is flat
A diameter of 0.4mm, length are 30mm~40mm, and the particle diameter of rubber aggregate is 1~2mm.
High compressive strength Rubber Concrete disclosed in the present embodiment 5, its preparation method reference implementation example 1.
By preparation of samples method disclosed by the invention and measuring method, the working performance of the concrete of the present embodiment 5 is tested,
The gained slump is 75mm；Compression strength is 53.5Mpa, tensile splitting strength 4.4Mpa, compared with comparative example 1, pressure resistance
6.36% and 33.33% is respectively increased in degree and tensile splitting strength.
Embodiment 6
It is fine that high compressive strength Rubber Concrete disclosed in the present embodiment 6 includes concrete base-material, rubber aggregate, steel
Dimension, water-reducing agent and water, wherein concrete base-material include cementitious material, stone, sand, and cementitious material is 42.5 common silicic acid of P.O
Salt cement；Cement, nano silicon dioxide, stone, sand, rubber aggregate, the quality of steel fibre and water be respectively 623kg,
514kg, 905kg, 50kg, 117kg and 204kg, the powdered water-reducing agent of naphthalene system are 5.92kg, water-reducing rate 26%, steel fibre
Average diameter is 0.4mm, and length is 30~40mm, and the particle diameter of rubber aggregate is 1~2mm.
High compressive strength Rubber Concrete disclosed in the present embodiment 6, its preparation method reference implementation example 1.
By preparation of samples method disclosed by the invention and measuring method, the working performance of the concrete of the present embodiment 6 is tested,
The gained slump is 78mm；Compression strength is 54.3Mpa, tensile splitting strength 5.0Mpa, compared with comparative example 1, pressure resistance
7.95% and 51.52% is respectively increased in degree and tensile splitting strength.
Comparative example 1
Rubber Concrete disclosed in this comparative example 1 includes concrete base-material, rubber aggregate, water-reducing agent and water, wherein
42.5 Portland cements of cementitious material P.O.The quality of wherein cement, stone, sand, rubber aggregate and water is respectively
574kg, 630kg, 957kg, 50kg and 188kg, the powdered water-reducing agent of naphthalene system are 4.88kg, water-reducing rate 26%, steel fibre
Average diameter is 0.4mm, and length is 30mm~40mm, and the particle diameter of rubber aggregate is 1~2mm.
This comparative example 1 uses the water-cement ratio 0.33 identical with above-described embodiment 1-6 and identical rubber volume 50kg/
m2。
The preparation of rubber concrete is carried out with reference to embodiment 1 disclosed in this comparative example 1.
By preparation of samples method disclosed by the invention and measuring method, the Rubber Concrete of this comparative example 1 is tested
Working performance, the gained slump are 80mm, compression strength 50.3Mpa, tensile strength 3.3Mpa.Embodiment 1-6 and contrast
The result is shown in table 1 below for example.
Embodiment 4-6 is disclosed only with steel fibre to rubber volume 50kg/m2Rubber Concrete be modified
Technical solution, its compression strength and tensile splitting strength increase compared with comparative example 1, and compression strength and tensile splitting strength are put down
6% and 31% or so, not up to C55 ranks are respectively improved, but at the same time using nano silicon dioxide and steel fibre to rubber
The technical solution for the embodiment 1-3 that aggregate concrete is modified, the compression strength and tensile splitting strength of obtained concrete
12% and 53% or so is averagely respectively increased, reaches C55 ranks, modified effect is more obvious, achieves unexpected technology
Effect, hydration reaction can not only be increased by illustrating the addition of nano silicon dioxide, make concrete more closely knit, moreover it is possible to improve steel fibre
Functioning efficiency.As it can be seen that the technical side being modified at the same time using steel fibre and nano silicon dioxide to Rubber Concrete
Case, has unexpected advantageous effects.
1 embodiment 1-6 of table and 1 concrete component of comparative example and the performance test results list
(note：Measurement unit is consistent with embodiment and comparative example in table)
Embodiment 7
It is fine that high compressive strength Rubber Concrete disclosed in the present embodiment 7 includes concrete base-material, rubber aggregate, steel
Dimension, water-reducing agent and water, wherein concrete base-material include cementitious material, stone, sand, and cementitious material includes cement and nano-silica
SiClx, cement quality content are 99%, and the mass content 1% of nano silicon dioxide, cement is 42.5 normal silicate water of P.O
Mud, the average grain diameter of nano silicon dioxide is 40nm, specific surface area 175m2/g.Cement, nano silicon dioxide, stone, sand,
The quality of rubber aggregate, steel fibre and water is respectively 584.10kg, 5.90kg, 696kg, 832kg, 100kg, 39kg and 176kg,
The powdered water-reducing agent of naphthalene system is 6.29kg, and water-reducing rate 26%, the average diameter of steel fibre is 0.4mm, and length is 30~40mm,
The particle diameter of rubber aggregate is 1~2mm.
High compressive strength Rubber Concrete, its preparation method comprise the following steps disclosed in the present embodiment 7：
1) machine drum body of wetting stirring in advance, agitated kettle is poured into by the sand of above-mentioned mass ratio, stone, after stirring 60 seconds in advance,
The slow continuous uniform of steel fibre is added, is stirred 90 seconds, steel fibre is dispersed to be opened, not conglomeration；
2) added by above-mentioned quality than rubber grain uniformly continuous, mix to uniform, stirring 90 seconds；
3) added by the nano silicon dioxide of above-mentioned mass ratio in cement, stirring is added after being stirred with small round shovel
Stirred 60 seconds in pot；
4) the powdered water-reducing agent of above-mentioned mass ratio is substantially dissolved in water, be added three times afterwards in agitated kettle, stirred
Mix 3 minutes or so, until mixture is uniformly mixed, up to the high compressive strength Rubber Concrete of the present embodiment.
By preparation of samples method disclosed by the invention and test method, the high compressive strength rubber collection of test the present embodiment 7
Expect the working performance of concrete, the gained slump is 65mm, compression strength 55.2Mpa, reaches C55 ranks, tensile strength is
4.4Mpa, compared with comparative example 2,10.93% and 57.57% is respectively increased in compression strength and tensile splitting strength.
Embodiment 8
It is fine that high compressive strength Rubber Concrete disclosed in the present embodiment 8 includes concrete base-material, rubber aggregate, steel
Dimension, water-reducing agent and water, wherein concrete base-material include cementitious material, stone, sand, and cementitious material includes cement and nano-silica
SiClx cement quality content is 98%, and the mass content 2% of nano silicon dioxide, cement is 42.5 normal silicate water of P.O
Mud, the average grain diameter of nano silicon dioxide is 40nm, specific surface area 175m2/g.Cement, nano silicon dioxide, stone, sand,
The quality of rubber aggregate, steel fibre and water be respectively 605.64kg, 12.36kg, 726kg, 895kg, 100kg, 78kg and
184kg, the powdered water-reducing agent of naphthalene system are 6.98kg, water-reducing rate 26%, and the average diameter of steel fibre is 0.4mm, length 30
~40mm, the particle diameter of rubber aggregate is 1~2mm.
The preparation method reference implementation example 7 of high compressive strength Rubber Concrete disclosed in the present embodiment 8.
By preparation of samples method disclosed by the invention and measuring method, the high compressive strength rubber collection of test the present embodiment 8
Expect the working performance of concrete, the gained slump is 62mm；Compression strength is 55.8Mpa, reaches C55 ranks, and Split-tension of Rolled is strong
Spend for 4.7Mpa, compared with comparative example 2,9.84% and 46.88% is respectively increased in compression strength and tensile splitting strength.
Embodiment 9
It is fine that high compressive strength Rubber Concrete disclosed in the present embodiment 9 includes concrete base-material, rubber aggregate, steel
Dimension, water-reducing agent and water, wherein concrete base-material include cementitious material, stone, sand, and cementitious material includes cement and nano-silica
SiClx, cement quality content are 97%, and the mass content 3% of nano silicon dioxide, cement is 42.5 normal silicate water of P.O
Mud, the average grain diameter of nano silicon dioxide is 40nm, specific surface area 175m2/g.Cement, nano silicon dioxide, stone, sand,
The quality of rubber aggregate, steel fibre and water be respectively 626.62kg, 19.38kg, 768kg, 956kg, 100kg, 117kg and
192kg, the powdered water-reducing agent of naphthalene system are 7.20kg, water-reducing rate 26%, and the average diameter of steel fibre is 0.4mm, length 30
~40mm, the particle diameter of rubber aggregate is 1~2mm.
High compressive strength Rubber Concrete disclosed in the present embodiment 9, its preparation method reference implementation example 7.
By preparation of samples method disclosed by the invention and measuring method, the high compressive strength rubber collection of test the present embodiment 9
Expect the working performance of concrete, the gained slump is 60mm；Compression strength is 56.1Mpa, reaches C55 ranks, and Split-tension of Rolled is strong
Spend for 4.6Mpa, compared with comparative example 2,11.33% and 51.52% is respectively increased in compression strength and tensile splitting strength.
Embodiment 10
It is fine that high compressive strength Rubber Concrete disclosed in the present embodiment 10 includes concrete base-material, rubber aggregate, steel
Dimension, water-reducing agent and water, wherein concrete base-material include cementitious material, stone, sand, and cementitious material is 42.5 common silicic acid of P.O
Salt cement, the average grain diameter of nano silicon dioxide is 40nm, specific surface area 175m2/g.Cement, stone, sand, rubber aggregate,
The quality of steel fibre and water is respectively 590kg, 696kg, 832kg, 100kg, 39kg and 176kg, and the powdered water-reducing agent of naphthalene system is
6.29kg, water-reducing rate 26%, the average diameter of steel fibre are 0.4mm, and length is 30~40mm, the particle diameter of rubber aggregate
For 1~2mm.
High compressive strength Rubber Concrete disclosed in the present embodiment 10, its preparation method reference implementation example 7.
By preparation of samples method disclosed by the invention and test method, the Rubber Concrete of the present embodiment 10 is tested
Working performance, the gained slump is 68mm, compression strength 51.2Mpa, tensile strength 3.6Mpa, compared with comparative example 2, is resisted
0.78% and 12.5% is respectively increased in Compressive Strength and tensile splitting strength.
Embodiment 11
It is fine that high compressive strength Rubber Concrete disclosed in the present embodiment 11 includes concrete base-material, rubber aggregate, steel
Dimension, water-reducing agent and water, wherein concrete base-material include cementitious material, stone, sand, and cementitious material is 42.5 common silicic acid of P.O
Salt cement, the average grain diameter of nano silicon dioxide is 40nm, specific surface area 175m2/g.Cement, stone, sand, rubber aggregate,
The quality of steel fibre and water is respectively 618kg, 726kg, 895kg, 100kg, 78kg and 184kg, and the powdered water-reducing agent of naphthalene system is
6.98kg, water-reducing rate 26%, the average diameter of steel fibre is 0.4mm, and length is 30mm~40mm, and the particle of rubber aggregate is straight
Footpath is 1~2mm.
High compressive strength Rubber Concrete disclosed in the present embodiment 11, its preparation method reference implementation example 7.
By preparation of samples method disclosed by the invention and measuring method, the workability of the concrete of test the present embodiment 11
Can, the gained slump is 78mm；Compression strength is 53.4Mpa, tensile splitting strength 4.0Mpa, compared with comparative example 2, resistance to compression
5.12% and 25.00% is respectively increased in intensity and tensile splitting strength.
Embodiment 12
It is fine that high compressive strength Rubber Concrete disclosed in the present embodiment 12 includes concrete base-material, rubber aggregate, steel
Dimension, water-reducing agent and water, wherein concrete base-material include cementitious material, stone, sand, and cementitious material is 42.5 common silicic acid of P.O
Salt cement, the average grain diameter of nano silicon dioxide is 40nm, specific surface area 175m2/g.Cement, stone, sand, rubber aggregate,
The quality of steel fibre and water is respectively 646kg, 768kg, 956kg, 100kg, 117kg and 192kg, and the powdered water-reducing agent of naphthalene system is
7.20kg, water-reducing rate 26%, the average diameter of steel fibre are 0.4mm, and length is 30~40mm, the particle diameter of rubber aggregate
For 1~2mm.
High compressive strength Rubber Concrete disclosed in the present embodiment 12, its preparation method reference implementation example 7.
By preparation of samples method disclosed by the invention and measuring method, the workability of the concrete of test the present embodiment 12
Can, the gained slump is 75mm；Compression strength is 51.0Mpa, tensile splitting strength 4.0Mpa, compared with comparative example 2, resistance to compression
0.39% and 25.00% is respectively increased in intensity and tensile splitting strength.
Comparative example 2
Rubber Concrete disclosed in this comparative example 2 includes concrete base-material, rubber aggregate, water-reducing agent and water, wherein
42.5 Portland cements of cementitious material P.O.The quality of wherein cement, stone, sand, rubber aggregate and water is respectively
590kg, 696kg, 832kg, 100kg, 39kg and 176kg, the powdered water-reducing agent of naphthalene system are 5.26kg, water-reducing rate 26%, steel
The average diameter of fiber is 0.4mm, and length is 30mm~40mm, and the particle diameter of rubber aggregate is 1~2mm.
This comparative example 2 uses the water-cement ratio 0.28 identical with above-described embodiment 7-12 and identical rubber volume 100kg/
m2。
The preparation of rubber concrete is carried out with reference to embodiment 7 disclosed in this comparative example 2.
By preparation of samples method disclosed by the invention and measuring method, the Rubber Concrete of this comparative example 2 is tested
Working performance, the gained slump are 79mm, compression strength 50.8Mpa, tensile strength 3.2Mpa.Embodiment 7-12 and contrast
The result is shown in table 2 below for example 2.
2 embodiment 7-12 of table and 2 concrete component of comparative example and the performance test results list (note：Measurement unit is with implementing
Example and comparative example are consistent)
Embodiment 10-12 is disclosed only with steel fibre to rubber volume 100kg/m2Rubber Concrete changed
The technical solution of property, its compression strength and tensile splitting strength increase compared with comparative example 2, compression strength and tensile splitting strength
Averagely be respectively increased 2% and 20% or so, but at the same time using nano silicon dioxide and steel fibre to Rubber Concrete into
The technical solution of the modified embodiment 7-9 of row, the compression strength and tensile splitting strength of obtained concrete are averagely respectively increased
10% and 52% or so, modified effect is more obvious, achieves unexpected technique effect, illustrates adding for nano silicon dioxide
Hydration reaction can not only be increased by entering, and make concrete more closely knit, moreover it is possible to improve the functioning efficiency of steel fibre.As it can be seen that use at the same time
The technical solution that steel fibre and nano silicon dioxide are modified Rubber Concrete, has unexpected Advantageous
Effect.
The high compressive strength rubber concrete that preparation method disclosed by the embodiments of the present invention is prepared, utilizes waste tire
As rubber aggregate, resource recycling is realized, significantly increase the compression strength and tensile splitting strength of concrete, improve it
Toughness, and delay the development in crack, compression strength can reach C55 ranks, and traditional rubber aggregate coagulation of more identical water-cement ratio
Native tensile splitting strength can improve more than 50%, while the slump, up to more than 60mm, mobility, water retention property are good, section
About clinker, preparation process is simple and environmentally-friendly, is easy to construct, and the present invention will meet the actual need to concrete high-performance of engineering
Ask, extend the application range of Rubber Concrete, it can be made to be applied to structure stress layer, broken Rubber Concrete
It can be only applied to the limitation of paving material since tensile and compressive strength is low.
Ins and outs disclosed in technical solution and embodiment disclosed by the invention, are merely illustrative the structure of the present invention
Think, the advantageous effects and the practicality of technical solution disclosed by the invention are only illustrated with limited embodiment
Implementation, does not form the restriction to technical solution of the present invention, every not have to what ins and outs disclosed by the invention were done
Creative change, is applied in combination presently disclosed techniques scheme, all has identical inventive concept with the present invention, all exists
Within the protection domain of the claims in the present invention.
Claims (10)
1. a kind of high compressive strength Rubber Concrete, it is characterised in that the concrete includes concrete base-material, rubber collection
Material, steel fibre, water-reducing agent, the concrete base-material include nano silicon dioxide.
2. high compressive strength Rubber Concrete according to claim 1, it is characterised in that the high compressive strength rubber
Glue aggregate concrete further includes water, wherein：
The concrete base-material includes cementitious material, stone and sand, and the mass ratio of the cementitious material, stone and sand is
0.9~1.1:0.76~1.2:1.4~1.8；
The cementitious material includes cement and nano silicon dioxide；
The volume volume of the rubber aggregate is 50~100kg/m3；
The volume volume of the steel fibre is 39~117kg/m3；
The mass ratio of the quality of the water and the cementitious material is 0.28~0.33:1；
The mass ratio of the quality of the water-reducing agent and the cementitious material is 0.9~1.2:100.
3. high compressive strength Rubber Concrete according to claim 1, it is characterised in that in the cementitious material,
The mass content of the cement is 97~99%, and the mass content of the nano silicon dioxide is 1~3%.
4. high compressive strength Rubber Concrete according to claim 1, it is characterised in that the volume of the steel fibre
Volume is 78~117kg/m3Between.
5. high compressive strength Rubber Concrete according to claim 1, it is characterised in that the steel fibre is curved
Hook-type, its a diameter of 0.3~0.8mm, length are 30~40mm, and the tensile strength of the steel fibre is more than 1100N/mm2。
6. high compressive strength Rubber Concrete according to claim 1, it is characterised in that the nano silicon dioxide
For hydrophilic nano silica.
7. high compressive strength Rubber Concrete according to claim 6, it is characterised in that the hydrophilic nano two
The average grain diameter of silica is that its specific surface area is in 175~245m between 20~40nm2Between/g.
8. high compressive strength Rubber Concrete according to claim 1, the water-reducing agent is powdered naphthalene series high-efficiency
Water-reducing agent, water-reducing rate is between 18~28%.
9. a kind of preparation method of any one of claim 1~8 high compressive strength Rubber Concrete, its feature exist
In comprising the following steps：
A) sand, stone are poured into agitated kettle, pre- stirring, the slow continuous uniform of steel fibre is added, is stirred uniform to steel fibre
It scatter；
B) rubber aggregate is added, mix is to uniform；
C) nano silicon dioxide is added in cement, stirred evenly, then added in agitated kettle, stirring；
D) water-reducing agent is substantially dissolved in water, is added to by several times in agitated kettle afterwards, stirring, until mixture is uniformly mixed.
10. preparation method according to claim 9, it is characterised in that comprise the following steps：
A) machine drum body is stirred in wetting in advance, and sand, stone are poured into agitated kettle, pre- stirring 60 seconds, and steel fibre is slowly continuous equal
Even addition, stirs to steel fibre is dispersed and opens；
B) rubber aggregate is at the uniform velocity added, mix is to uniform；
C) nano silicon dioxide is added in cement, stirred evenly, then added in agitated kettle, stirred 60 seconds；
D) water-reducing agent is substantially dissolved in water, is divided afterwards 2~3 times and is added in agitated kettle, is stirred 3~5 minutes, until mixture
It is uniformly mixed.
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| CN110467394A (en) * | 2019-08-27 | 2019-11-19 | 马清浩 | A kind of cement grout material and its preparation method and application |
| CN111704411A (en) * | 2020-06-22 | 2020-09-25 | 深圳大学 | Environment-friendly fiber reinforced rubber concrete and preparation method thereof |
| WO2021068118A1 (en) * | 2019-10-09 | 2021-04-15 | Royal Melbourne Institute For Technology | Rubber concrete product |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109721267A (en) * | 2019-01-24 | 2019-05-07 | 天津大学 | A kind of rubber aggregate cement-based material of carbon nanotube enhancing |
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