CN105084796B - A kind of method of modifying of rubber grain and a kind of high-impact-resistance wear-resistant rubber concrete - Google Patents
A kind of method of modifying of rubber grain and a kind of high-impact-resistance wear-resistant rubber concrete Download PDFInfo
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- CN105084796B CN105084796B CN201510514976.5A CN201510514976A CN105084796B CN 105084796 B CN105084796 B CN 105084796B CN 201510514976 A CN201510514976 A CN 201510514976A CN 105084796 B CN105084796 B CN 105084796B
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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
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Abstract
The invention belongs to building material technical field, specifically disclose a kind of method of modifying of rubber grain, it comprises the steps：1）The KH 560 solution acetic acid taking 50 parts of mass concentrations 1% adjusts pH value to 5-6；2）Take 4-6 part carbamide, 1-2 part sucrose, 0.5 part of sodium dichromate, 1-2 part magnesium sulfate and 1 part of Kaolin（1250#）, after mix homogeneously, use appropriate water dissolution；3）By step 1）With 2）Resulting solution mixes, and adds 30-50 part sodium silicate, stirs with appropriate rubber grain and so that rubber particle surface is moistened, process 15-25 minute, obtain final product after mix homogeneously.The invention also discloses a kind of high-impact-resistance wear-resistant rubber concrete, it is pressed 10-20% equal-volume with the rubber grain that above-mentioned method of modifying obtains and replaces part sand.The rubber concrete processing through the inventive method can effectively improve its comprcssive strength and split tensile strength, and increases substantially anti-abrasion strength.
Description
Technical field
The invention belongs to building material technical field is and in particular to a kind of method of modifying of rubber grain and a kind of high-impact
Abrasive rubber concrete.
Background technology
In recent years, the yield of junked tire flies suddenly with the high speed development of Chinese Automobile Industry ', the prominent of car owning amount
Increase and roll up.Junked tire has very strong heat resistance, mechanical resistance, and is difficult to degraded, and decades are all without naturally disappearing
Lose, be known as " black pollution ", cause larger threat to environment.Junked tire is a kind of regenerated resources, reclaims profit again
With not only economizing on resources but also pollution can be reduced, considerable economic benefit also can be created.
The appearance of rubber concrete both recoverable waste tire rubbers, can provide a kind of novel-section for architectural engineering again
Material.Compared with normal concrete, rubber concrete has that toughness is high, shock resistance is strong, cracking resistance is impervious and excellent in durability etc. is excellent
Point；Compared with bituminous concrete, the features such as it has again, and rigidity is relatively large, water-tolerant, fatigue life are long.Rubber concrete
It is a kind of preferable New Building Materials of prospect.
The shortcoming of rubber concrete is that intensity declines to a great extent compared with normal concrete, and this largely limits rubber coagulation
The practical application of soil.Research shows：What rubber concrete intensity declined to a great extent main reason is that：Rubber grain is organic material
Material, the adhesion strength and between inorganic material Behavior of Hardened Cement Paste is much smaller than the adhesion strength between aggregate and Behavior of Hardened Cement Paste, leads to the strong of concrete
Degree reduces.
High-velocity sediment-laden flow is badly in hydraulic engineering construction and operation to the worn-off of rushing of hydraulic structure excessively stream surface concrete
Knotty problem.At present, commonly used in China's hydraulic engineering silica flour scour and abrasion resistant concrete, modified epoxy mortar
Undoubtedly it is respectively provided with preferable impact-resisting wear-resisting ability with protective coating, but due to from raw material, compositing formula and technology path
Limit so as to also expose, in engineering construction and application, the weakness itself being difficult to overcome.As silica flour abrasion resistance concrete
Early strength is developed at a too fast speed, and middle and late stage gain in strength is small, and the heat of hydration concentrates release, drying shrinkage and from shrinking big in dry, easily sends out
Raw crack；Modified epoxy class impact-resisting wear-resisting mortar linear expansion coefficient is larger with concrete difference, inharmonious with concrete deformation, holds
Easily hollowing, cracking flaking；Protective coating typically contains more effumability solvent composition, under humidity and water environment not
Easily construct, pliability still is apparent not enough.
Content of the invention
Decline larger shortcoming and the deficiency of impact-resisting wear-resisting material for rubber concrete intensity, the invention provides a kind of
The method of modifying of rubber grain and a kind of high-impact-resistance wear-resistant rubber concrete, the rubber grain processing through the method is spiked into
After in normal concrete, compared with benchmark rubber concrete, intensity significantly improves, and resistance to impact and abrasion greatly improves.
For achieving the above object, the technical scheme that the present invention takes is as follows：
A kind of method of modifying of rubber grain, it comprises the steps：
1）In parts by weight, the KH-560 solution acetic acid taking 50 parts of mass concentrations 1% adjusts pH value to 5-6；
2）In parts by weight, 4-6 part carbamide, 1-2 part sucrose, 0.5 part of sodium dichromate, 1-2 part magnesium sulfate and 1 part are taken
Kaolin（1250#）, after mix homogeneously, use appropriate water dissolution；
3）By step 1）With 2）Resulting solution mixes, and adds 30-50 part sodium silicate, with appropriate rubber after mix homogeneously
Granule stirs makes rubber particle surface moisten, and processes 15-25 minute, obtains final product.Then concrete mix can just be mixed.
Specifically, step 2）The addition of middle water is step 3）3-4 times of middle sodium silicate weight.
The rubber grain being obtained using above-mentioned method of modifying.
A kind of high-impact-resistance wear-resistant rubber concrete, including cement, water, sand and stone, wherein, above-mentioned rubber grain is pressed
10-20% equal-volume replaces part sand.
Specifically, a kind of high-impact-resistance wear-resistant rubber concrete, the mixing ratio by weight of each raw material is：Cement：Water：Sand：Stone；
Rubber grain=492：162：523.8：1177：25.7.
Specifically, a kind of high-impact-resistance wear-resistant rubber concrete, the mixing ratio by weight of its each raw material is：Cement：Water：Sand：Stone
Son；Rubber grain=492：162:：465.6：1177；51.4.
Preferably, in above-mentioned high-impact-resistance wear-resistant rubber concrete, cement selection composite Portland cement P C42.5；Sand
For fluvial sand, modulus of fineness 2.65, maximum particle diameter 5mm, continuous grading, apparent density 2534kg/m3；Stone is limestone gravel, 5
～20mm continuous grading, apparent density 2732 kg/m3；Rubber grain particle diameter 3～6mm, apparent density 1119kg/ m3.
Compared with the benchmark rubber concrete without any process, process, through method of modifying of the present invention, the rubber obtaining
Concrete can effectively improve comprcssive strength and the split tensile strength of rubber concrete, and the service behaviour of concrete batching system is not had not
Good impact, and greatly improve resistance to impact and abrasion.
Specific embodiment
With reference to embodiments technical scheme is further discussed in detail, but protection scope of the present invention
It is not limited thereto.
Term is explained：1st, rubber concrete：Rubber grain（Or powder or other shapes）As a kind of admixture equal-volume
Part replaces sand and is added to a kind of new concrete made in cement concrete；2nd, benchmark normal concrete：It is not spiked with rubber
The normal concrete of granule；3rd, benchmark rubber concrete：Rubber grain is without the rubber concrete of any process；4th, modified rubber
Glue concrete：Rubber grain is through the modified rubber concrete crossed of some way.
Material specification：Cement selection composite Portland cement P C42.5, qualified；Sand is fluvial sand, modulus of fineness
2.65, maximum particle diameter 5mm, continuous grading, apparent density 2534kg/m3；5～20mm continuous grading, apparent density 2732 kg/
m3, level cooperation lattice；Rubber grain particle diameter 3～6mm, apparent density 1119kg/ m3.
In order to improve the workability of concrete, work progress can add appropriate water reducer, this is the public affairs of this area
Know general knowledge.The water reducer adding in following embodiments is naphthalene series high-efficiency water-reducing agent.
The method of modifying embodiment of rubber grain
Embodiment 1
A kind of method of modifying of rubber grain, it comprises the steps：
1）In parts by weight, the KH-560 solution acetic acid taking 50 parts of mass concentrations 1% adjusts pH value to 5.5；
2）In parts by weight, 5 parts of carbamide, 1.5 portions of sucrose, 0.5 part of sodium dichromate, 1.5 parts of magnesium sulfate and 1 part of Kaolin are taken
（1250#）, with 120 parts of water dissolutioies after mix homogeneously；
3）By step 1）With 2）Resulting solution mixes, and adds 40 parts of sodium silicate, with 500 parts of rubber grains after mix homogeneously
（Particle diameter 3～6mm）Stir and so that rubber particle surface is moistened, process 20 minutes.Just concrete mix can be mixed.
Modified rubber concrete embodiment
Embodiment 2
Modified rubber concrete：Rubber grain is pressed 10% equal-volume and is replaced part sand, and each raw material weight match ratio is：Cement:
Water:Sand:Stone:Rubber grain:Water reducer=492：162：523.8：1177：25.7：5, and described rubber grain presses embodiment
1 method is modified.
Mix and stir technique：
1）Weigh stone, cement, sand, rubber grain, water reducer and water according to match ratio（The quality of wherein water need to deduct rubber
The water yield adding during the granule modified process of glue）；
2）First stone is added in mix pot, then rubber grain is admixed add in mix pot in cement together, Ran Houjia
Enter water reducer and sand, start mix pot stirring 10s, be eventually adding water mix 2min30s.
Embodiment 3
Modified rubber concrete：Rubber grain is pressed 10% equal-volume and is replaced part sand, and each raw material weight match ratio is cement:
Water:Sand:Stone:Rubber grain:Water reducer=492：162:：465.6：1177；51.4：5, and described rubber grain presses enforcement
Example 1 method is modified.Mix and stir technique with reference to embodiment 2.
Reference examples 1
Benchmark normal concrete：Each raw material weight match ratio is：Cement:Water:Sand:Stone:Water reducer=492:162:582:
1177: 5.
Mix and stir technique：
1）Weigh stone, cement, sand, water reducer and water according to match ratio；
2）First stone is added in mix pot, then cement, water reducer are added in mix pot, be subsequently adding sand, startup is mixed
Close pot stirring 10s, be eventually adding water mix 2min30s.
Reference examples 2
Benchmark rubber concrete：Rubber grain is pressed 10% equal-volume and is replaced part sand, and mixing ratio by weight is cement:Water:Sand:
Stone:Rubber grain:Water reducer=492:162:523.8:1177:25.7:5, and described rubber grain is without any process.
Mix and stir technique：
1）Weigh stone, cement, sand, rubber grain, water reducer and water according to match ratio；
2）First stone is added in mix pot, then rubber grain is admixed adds in mix pot in cement together, afterwards plus
Enter water reducer and sand, start mix pot stirring 10s, be eventually adding water mix 2min30s.
Embodiment 2,3 modified rubber concrete and reference examples 1 benchmark normal concrete, reference examples 2 benchmark rubber concrete
Performance comparison result see table.From following table：The rubber grain processing through the inventive method is spiked into common coagulation
After in soil, compared with benchmark normal concrete intensity, the amplitude that reduces reduces, with base the intensity of embodiment 2 modified rubber concrete
Quasi- rubber concrete is compared, and intensity significantly improves.Compared with benchmark rubber concrete, embodiment 2 modified rubber concrete anti-
Punching mill intensity is increased substantially compared with benchmark normal concrete intensity, and anti-abrasion strength improves 52%；Embodiment 3 modified rubber
The anti-abrasion strength of concrete then improves 204%.
Claims (7)
1. a kind of method of modifying of rubber grain it is characterised in that：Comprise the steps：
1）In parts by weight, the KH-560 solution acetic acid taking 50 parts of mass concentrations 1% adjusts pH value to 5-6；
2）In parts by weight, 4-6 part carbamide, 1-2 part sucrose, 0.5 part of sodium dichromate, 1-2 part magnesium sulfate and 1 part of kaolinite are taken
Soil, uses appropriate water dissolution after mix homogeneously；
3）By step 1）With 2）Resulting solution mixes, and adds 30-50 part sodium silicate, with appropriate rubber grain after mix homogeneously
Stir and so that rubber particle surface is moistened, process 15-25 minute, obtain final product.
2. the method for modifying of rubber grain as claimed in claim 1 is it is characterised in that step 2）The addition of middle water is step 3）
3-4 times of middle sodium silicate weight.
3. adopt the rubber grain that method of modifying described in claim 1 or 2 obtains.
4. a kind of high-impact-resistance wear-resistant rubber concrete, including cement, water, sand and stone it is characterised in that described in claim 3
Rubber grain press 10-20% equal-volume replace part sand.
5. high-impact-resistance wear-resistant rubber concrete as claimed in claim 4 is it is characterised in that the mixing ratio by weight of each raw material is：
Cement：Water：Sand：Stone；Rubber grain=492：162：523.8：1177：25.7.
6. high-impact-resistance wear-resistant rubber concrete as claimed in claim 4 is it is characterised in that the mixing ratio by weight of each raw material is：
Cement：Water：Sand：Stone；Rubber grain=492：162：465.6：1177：51.4.
7. the high-impact-resistance wear-resistant rubber concrete as described in claim 4 to 6 any one is it is characterised in that cement selection is multiple
Close portland cement P C42.5；Sand is fluvial sand, modulus of fineness 2.65, maximum particle diameter 5mm, continuous grading, apparent density
2534kg/m3；Stone is limestone gravel, 5～20mm continuous grading, apparent density 2732 kg/m3；Rubber grain particle diameter 3～
6mm, apparent density 1119kg/ m3.
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| CN105777003B (en) * | 2016-03-09 | 2018-04-03 | 河海大学 | A kind of preparation method of the structural concrete of sulfate resistance erosion medium resistance |
| CN108516715A (en) * | 2018-04-04 | 2018-09-11 | 国网河南省电力公司电力科学研究院 | It is a kind of to utilize abrasion-proof concrete and preparation method thereof made from retired composite insulator modified silicon rubber |
| CN114163207B (en) * | 2021-12-08 | 2023-03-24 | 深圳市恒星建材有限公司 | High-strength low-elasticity hydraulic anti-abrasion concrete and preparation method thereof |
| CN116462461A (en) * | 2023-03-15 | 2023-07-21 | 华北水利水电大学 | Sprayable side slope impact-resistant flexible protective concrete |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674731A (en) * | 2012-05-24 | 2012-09-19 | 北京振利节能环保科技股份有限公司 | Modified rubber particles for mortar and preparation method of modified rubber particles |
| CN103787605A (en) * | 2014-02-25 | 2014-05-14 | 河南省水利科学研究院 | Modification method of rubber particles and modified rubber concrete |
| CN104761199A (en) * | 2015-03-26 | 2015-07-08 | 广东工业大学 | Preparation method of concrete artificial fish shelter material doped with rubber powder |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674731A (en) * | 2012-05-24 | 2012-09-19 | 北京振利节能环保科技股份有限公司 | Modified rubber particles for mortar and preparation method of modified rubber particles |
| CN103787605A (en) * | 2014-02-25 | 2014-05-14 | 河南省水利科学研究院 | Modification method of rubber particles and modified rubber concrete |
| CN104761199A (en) * | 2015-03-26 | 2015-07-08 | 广东工业大学 | Preparation method of concrete artificial fish shelter material doped with rubber powder |
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