CN103588404B - Method for processing recycled aggregate and method for preparing high performance concrete using same - Google Patents
Method for processing recycled aggregate and method for preparing high performance concrete using same Download PDFInfo
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- CN103588404B CN103588404B CN201310489553.3A CN201310489553A CN103588404B CN 103588404 B CN103588404 B CN 103588404B CN 201310489553 A CN201310489553 A CN 201310489553A CN 103588404 B CN103588404 B CN 103588404B
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000012545 processing Methods 0.000 title claims abstract description 6
- 239000004574 high-performance concrete Substances 0.000 title claims description 8
- 239000004567 concrete Substances 0.000 claims abstract description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 31
- 239000004576 sand Substances 0.000 claims description 27
- 230000008929 regeneration Effects 0.000 claims description 26
- 238000011069 regeneration method Methods 0.000 claims description 26
- 239000004575 stone Substances 0.000 claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 13
- 239000004568 cement Substances 0.000 claims description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 11
- 239000002956 ash Substances 0.000 claims description 11
- 239000010703 silicon Substances 0.000 claims description 11
- 229910052710 silicon Inorganic materials 0.000 claims description 11
- 238000010348 incorporation Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 239000010881 fly ash Substances 0.000 claims description 7
- 239000010883 coal ash Substances 0.000 claims description 6
- 235000013312 flour Nutrition 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- -1 admixture Substances 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 230000007062 hydrolysis Effects 0.000 claims description 3
- 238000006460 hydrolysis reaction Methods 0.000 claims description 3
- 239000012452 mother liquor Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 2
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 2
- 125000001033 ether group Chemical group 0.000 claims description 2
- 239000004615 ingredient Substances 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 4
- 239000000920 calcium hydroxide Substances 0.000 description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000011372 high-strength concrete Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229920006037 cross link polymer Polymers 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000011371 regular concrete Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- 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
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a method for processing recycled aggregate, which is simple to operate and has obvious effect. Processed crude and fine recycled aggregates are used for preparing a C90 high performance recycled concrete, high-grade concrete is not needed, the production technology is simple, and the manufacture cost is low.
Description
Technical field: the invention belongs to building material field, is specifically related to a kind for the treatment of process of regeneration aggregate and applies its a kind of recycled high performance concrete.
Background technology: at present, along with the aggravation of urban construction, the rise of building trade, Urban House Demolition step is accelerated, and building waste increases gradually, and in such a case, it is necessary for carrying out effective and reasonable utilization to building waste.Because Housing needs grows in intensity, Highrise buildings becomes development trend, and in this case, producing high performance high strength concrete has become necessary.Building waste is applied in high performance high strength concrete by the present invention, not only can be salvaged, and can save natural aggregate, can be applied to the field such as Highrise buildings, highway bridge.
Summary of the invention: content of the present invention is to provide a kind for the treatment of method of regeneration aggregate and applies its a kind of preparation method of C90 high performance concrete.Regeneration aggregate is through the building castoff of removal process generation through removal of impurities, simple crushing, and particle shaping, screening carry out grain composition and obtain.Regeneration aggregate remove process in and in the process being broken into aggregate due to the effect in machinery, physics etc., tiny crack can be produced, if be applied in regeneration concrete, there is capillary action in tiny crack on the one hand, easily absorb water, cause concrete performance unstable, on the other hand, the existence of tiny crack, uses and has certain limitation, the present invention is thick by the regeneration after process, fine aggregate is applied in regenerating high-performance C90 concrete, and demonstrates its performance.
The present invention is realized by following technical scheme:
A kind for the treatment of process of regeneration aggregate.Life coarse aggregate or fine aggregate are placed in a forced mixer, add industrial silane coupling agent, add little water, cover lid, stir about 60s, leave standstill 30min, then stir.Discharging, process completes.Silane coupling agent used is
wherein, R1, R2, R3 are alkane or the ether group of C1-C4, and R4 is that one scolds electron group, and as vinyl, ethynyl, methyl etc., all groups (R1-R4) all easily evaporate after hydrolysis.Silane coupling agent can be vinyltriethoxysilane etc.The add-on of silane coupling agent decides according to handled object, and when processing regeneration stone, add-on is the 3%-10% of regeneration stone quality; When processing reclaimed sand, add-on is the 8%-20% of reclaimed sand quality; The add-on of water is the 5-10% of silane coupling agent weight.
Regeneration coarse-fine aggregate all has tiny crack, comparatively serious to concrete intensity effect, modification is carried out to it, adopt silane coupling agent, in the presence of a small amount of water, silane coupling agent is in acid, comparatively facile hydrolysis in alkaline environment, regeneration is thick, all containing calcium hydroxide in fine aggregate, therefore can be hydrolyzed rapidly, silane coupling agent is liquid, because capillary action can penetrate in tiny crack, be cross-linked rapidly under the effect of calcium hydroxide, play adhesive effect, the matter-pole generated is volatile, the crosspolymer material that silane coupling agent produces easily and calcium hydroxide react, generate Calucium Silicate powder.
A kind of high strength C90 concrete, it adopts cement, first level flour coal ash, silicon ash, natural sand, reclaimed sand, natural stone, regeneration stone, admixture, water to be raw material, and concrete raw material consists of: by the weight content of every cubic meter of concrete ingredient,
Cement: 500kg/m
3,
Sand (comprising natural sand and reclaimed sand): 600-650kg/m
3
Stone (comprising natural stone and regeneration stone): 1040-1090kg/m
3
Adulterant (comprising first level flour coal ash and silicon ash): 100kg/m
3
Admixture: 6.00kg/m
3
Water: 150kg/m
3
Described cement selection P.O42.5 cement.
Described natural sand grating after cleaning is mixed with II district's medium sand that fineness modulus is 2.66-2.70, and silt content is less than 0.5%, not containing clod, and classified grating.Other indexs should meet " regular concrete sand quality standard and the method for inspection ".
Reclaimed sand, through above-mentioned regeneration aggregate disposal methods, is mixed with continuous grading.Fineness modulus controls at 2.66-2.70, and incorporation accounts for the 5-30% of total sand incorporation.
Described natural stone is through washing, and select more than ultimate compression strength 90Mpa, elongated particles is less than 5%, is mixed with 5-20mm continuous grading, and other indexs should meet " normal concrete stone quality standard and the method for inspection ".
Regeneration stone is through above-mentioned regeneration aggregate disposal methods, and elongated particles is less than 5%, is mixed with 5-20mm continuous grading, and incorporation is the 5-50% of stone incorporation.
Described adulterant is the mixture of flyash and silicon ash, wherein flyash 50kg/m
3, silicon ash 50kg/m
3, flyash is first level flour coal ash, and the dioxide-containing silica of silicon ash is greater than 90%, and specific surface area is 1000-1200m
2/ kg.
Described admixture to be solid content be 50% high-performance water reducing agent mother liquor, water-reducing rate is 40%.
Above-mentioned concrete preparation method, is characterized in that there is following step: natural sand, reclaimed sand, natural stone, regeneration stone, cement, adulterant are put into forced mixer and stirred 60s in advance, then add water, admixture carries out stirring 180s discharging.High performance concrete of the present invention is applicable to the multiple permanent concrete structure engineerings such as Highrise buildings, highway, railway, has following advantage:
1 the present invention adopts the conventional raw materials such as the cement of common label to make high performance concrete, does not have special material, and the concrete price of its cost and commercial goods is suitable, but due to its high strength and density, can make increase for a long time working life.
Silane coupling agent used by 2 the present invention is cheap and easy to get, not only has the effect of crosslinked tiny crack, and can and calcium hydroxide reaction, strengthening aggregate effect better.
3 adopt the concrete of the present invention's configuration to construct all very easy from producing to, and concrete work performance is good, not thickness, does not emanate.Be out of shape little, good endurance, can rugged environment be born, be particularly suitable for the permanent concrete workses such as railway, highway, Highrise buildings.
Embodiment:
Embodiment 1: the proportioning corresponding to the present embodiment is as shown in table 1:
Table 1 proportioning raw materials
The blending craft adopted: cement, flyash, silicon ash, sand, stone are pressed in table 1 and weighed, stirs 60s in advance, add water and admixture in forced mixer, stops after continuing to stir 180s, draws mixture.The mechanical performance of concrete obtained is as shown in table 2.
Table 2 mechanical performance of concrete
Embodiment 2: the proportioning corresponding to the present embodiment is as shown in table 3:
Table 3 proportioning raw materials
The blending craft adopted: cement, flyash, silicon ash, sand, stone are pressed in table 3 and weighed, stirs 60s in advance, add water and admixture in forced mixer, stops after continuing to stir 180s, draws mixture.The mechanical performance of concrete obtained is as shown in table 4.
Table 4 mechanical performance of concrete
Embodiment admixture used is the high-performance water reducing agent mother liquor that solid content is 50%, and water-reducing rate is 40%.
Claims (2)
1. a C90 high performance concrete, adopts cement, flyash, silicon ash, natural sand, reclaimed sand, natural stone, regeneration stone, admixture, water to be raw material, it is characterized in that: the weight content by every cubic meter of concrete ingredient:
Cement: 500kg/m
3,
Sand comprises natural sand and reclaimed sand: 600-650kg/m
3,
Stone comprises natural stone and regeneration stone: 1040-1090kg/m
3,
Adulterant comprises first level flour coal ash and silicon ash: 100kg/m
3,
Admixture: 6.00kg/m
3,
Water: 150kg/m
3,
The cement adopted is P.O42.5 grade cement,
Flyash meets the technical requirements of first level flour coal ash,
The dioxide-containing silica of silicon ash is greater than 90%, and specific surface area is 1000-1200m
2/ kg; Silicon ash is 1:1 with the incorporation mass ratio of first level flour coal ash,
Admixture to be solid content be 50% high-performance water reducing agent mother liquor, water-reducing rate is 40%,
Natural sand is through washing, and silt content is less than 0.5%, and classified grating, fineness modulus controls at 2.66-2.70,
Reclaimed sand is through process, and be mixed with continuous grading, fineness modulus controls at 2.66-2.70, and incorporation accounts for the 5-30% of total sand incorporation,
Natural stone through washing, and carries out classification by grating, is mixed with the continuous grading of 5-20mm,
Regeneration stone through process, and is mixed with the continuous grading of 5-20mm, and incorporation accounts for the 5-50% of total stone incorporation,
Wherein reclaimed sand and regeneration stone process through regeneration aggregate treatment process;
The treatment process of described regeneration aggregate, comprises the steps:
Life coarse aggregate or fine aggregate are placed in a forced mixer, add industrial silane coupling agent, add little water, cover lid, stir 60s, leave standstill 30min, then stir, discharging;
Silane coupling agent used is
wherein, R1, R2, R3 are alkane or the ether group of C1-C4, and R4 is that one scolds electron group, and all radicals R 1-R4 all easily evaporate after hydrolysis; The add-on of silane coupling agent decides according to handled object, and when processing regeneration stone, add-on is the 3%-10% of regeneration stone quality; When processing reclaimed sand, add-on is the 8%-20% of reclaimed sand quality; The add-on of water is the 5-10% of silane coupling agent weight.
2. a kind of C90 high performance concrete as claimed in claim 1, is characterized in that: the silane coupling agent adopted is vinyltriethoxysilane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310489553.3A CN103588404B (en) | 2013-10-18 | 2013-10-18 | Method for processing recycled aggregate and method for preparing high performance concrete using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310489553.3A CN103588404B (en) | 2013-10-18 | 2013-10-18 | Method for processing recycled aggregate and method for preparing high performance concrete using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103588404A CN103588404A (en) | 2014-02-19 |
| CN103588404B true CN103588404B (en) | 2015-05-20 |
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|---|---|---|---|
| CN201310489553.3A Active CN103588404B (en) | 2013-10-18 | 2013-10-18 | Method for processing recycled aggregate and method for preparing high performance concrete using same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017082747A1 (en) | 2015-11-13 | 2017-05-18 | Instituto Superior Técnico | High-performance concrete made with no natural aggregates and its preparation |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106277960A (en) * | 2016-07-26 | 2017-01-04 | 扬州大学 | C30 concrete based on regeneration aggregate and preparation method thereof |
| CN106220064A (en) * | 2016-07-26 | 2016-12-14 | 扬州大学 | Intensifying regenerating concrete coarse aggregate, preparation method and application |
| CN107686295A (en) * | 2017-09-30 | 2018-02-13 | 翟孝东 | A kind of dry-mixed mortar production method |
| CN109160791A (en) * | 2018-11-12 | 2019-01-08 | 四川国泰高新管廊产业投资有限公司 | A kind of recycled fine aggregate High-strength self-compaction concrete |
| CN109553368A (en) * | 2019-01-17 | 2019-04-02 | 广东信强混凝土有限公司 | Regeneration concrete |
| CN111302689A (en) * | 2020-02-28 | 2020-06-19 | 哈尔滨工业大学（深圳） | Modified recycled aggregate and preparation method thereof, and pervious concrete and preparation method thereof |
| CN111268931A (en) * | 2020-03-20 | 2020-06-12 | 佛山市南海承骏科技有限公司 | Preparation method of recycled aggregate and dry-mixed mortar |
| CN113024170B (en) * | 2021-03-11 | 2022-08-12 | 杭州申华混凝土有限公司 | Recycled aggregate concrete and preparation method thereof |
| CN115073097B (en) * | 2022-07-11 | 2023-04-07 | 杭州余杭恒力混凝土有限公司 | High-strength recycled aggregate concrete and preparation method thereof |
| CN115321860B (en) * | 2022-07-29 | 2023-10-27 | 中原环保万瑞郑州固废科技有限公司 | Surface modification and particle reinforcement method for construction waste recycled aggregate |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351449A (en) * | 2011-06-29 | 2012-02-15 | 合肥工业大学 | Nonionic surfactant-modified machine-made sand and preparation method thereof |
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2013
- 2013-10-18 CN CN201310489553.3A patent/CN103588404B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351449A (en) * | 2011-06-29 | 2012-02-15 | 合肥工业大学 | Nonionic surfactant-modified machine-made sand and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017082747A1 (en) | 2015-11-13 | 2017-05-18 | Instituto Superior Técnico | High-performance concrete made with no natural aggregates and its preparation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103588404A (en) | 2014-02-19 |
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Address after: 102200 Beijing City, Changping District Yang Fang Zhen Shi Jia Qiao Cun four history Road No. 603 Patentee after: Beijing TEDA Environmental Protection Technology Co., Ltd. Address before: 102200 Beijing City, Changping District Yang Fang Zhen Shi Jia Qiao Cun four history Road No. 603 Patentee before: BEIJING YUANTAIDA ENVIRONMENTAL PROTECTION BUILDING MATERIAL TECHNOLOGY CO., LTD. |
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