CN102807341A - Ecotype full-regeneration rapid repair concrete - Google Patents
Ecotype full-regeneration rapid repair concrete Download PDFInfo
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- CN102807341A CN102807341A CN2012102975098A CN201210297509A CN102807341A CN 102807341 A CN102807341 A CN 102807341A CN 2012102975098 A CN2012102975098 A CN 2012102975098A CN 201210297509 A CN201210297509 A CN 201210297509A CN 102807341 A CN102807341 A CN 102807341A
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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 invention discloses an ecotype full-regeneration rapid repair concrete which is characterized in that the concrete is prepared by the following components in parts by weight: 310-400 parts of cement, 20-60 parts of metakaolin, 40-90 parts of regeneration powder, 40-80 parts of rapid repairing agent, 1050-1200 parts of regeneration coarse aggregate, 520-600 parts of regeneration fine aggregate, 5-10 parts of polycarboxylic acid water reducer and 170-220 parts of water. The ecotype full-regeneration rapid repair concrete has the advantages that waste materials are sufficiently used, energy reduction and environmental protection are achieved, the traffic is opened as soon as possible, and the cost is low.
Description
Technical field
The invention belongs to building material field, relate to a kind of ecotype Rapid Repair Concrete of regenerating entirely.
Background technology
Cement concrete pavement under traffic load and environmental factors dual function, part plate face badly broken and be badly in need of repairing or reconstruction.If can not in time effectively handle, certainly will influence Urban traffic to it.
Adopt normal concrete to repair damaged cement concrete pavement; Its maintenance date is long; Had a strong impact on the unimpeded of Urban traffic, and it is higher to do sth. in advance its price of conventional quick patching material for cement concrete pavement of open to traffic time, has influenced it to promote the use of; Damaged simultaneously cement concrete pavement has produced a large amount of discarded concretes, if it is not rationally utilized, has both caused the wasting of resources, has had a strong impact on local ecotope again.
In the disposal process of discarded concrete, can produce regeneration aggregate and regenerative powder.Adopt regeneration aggregate can prepare regeneration concrete; But can't efficient resource utilization regenerative powder wherein; Simultaneously mix regenerative powder separately and certainly will reduce concrete performance; Influence the requirement of road open to traffic, so a kind of energy-conserving and environment-protective of market in urgent need, open to traffic and the low full regeneration Rapid Repair Concrete of price as early as possible.
Summary of the invention
The present invention is directed to the above-mentioned deficiency of prior art, provide a kind of and can make full use of waste material, energy-conserving and environment-protective, the low environmental full regeneration Rapid Repair Concrete of open to traffic and price as early as possible.
In order to solve the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of ecotype Rapid Repair Concrete of regenerating entirely, and this concrete is by each component preparation of following weight part; Comprise 310 ~ 400 parts of cement, 20 ~ 60 parts of metakaolins, 40 ~ 90 parts of regenerative powders; 40 ~ 80 parts of fast repairing agents, 1050 ~ 1200 parts of regenerated coarse aggregates, 520 ~ 600 parts of recycled fine aggregates; 5 ~ 10 parts of polycarboxylate water-reducers, 170 ~ 220 parts in water.
Described metakaolin specific surface area is 2000 ~ 2500m
2/ kg, its Al
2O
3And SiO
2The massfraction sum is greater than 95%.
Described regenerative powder is that the subsidiary particle diameter that forms is 300 ~ 550m through the levigate specific surface area that forms less than 0.075mm again in the regeneration aggregate production process
2/ kg, its Ca (OH)
2Content (weight percent) is greater than 2% powder.
Described recycled fine aggregate be particle diameter greater than 0.075mm, less than 4.75mm, medium sand, the recycled fine aggregate in 2 grating districts.
Described regenerated coarse aggregate is for satisfying: particle diameter 4.75 ~ 20mm continuous grading, and faller gill shape content (weight percent, down together) is less than 5% of regenerated coarse aggregate total amount; Powder content is less than 1%; Clod content is less than 0.5%, and crush index is less than 12%, and the soundness mass loss is less than 5%.
Described fast repairing agent: for sulplo-aluminate, high-quality material and the efficient formulated SBTJK-24 type inorganic materials of surfactant, like the SBTJK-24 type structite of Jiangsu Subotexin Material Co., Ltd.
The present invention's's above-mentioned " a kind of ecotype regenerate full Rapid Repair Concrete " concrete preparation method is:
(1) at first waste concrete block is carried out primary crushing and screening; Particle diameter is got back to primary crushing and screening link once more greater than the waste concrete block of 40mm; Particle diameter then carries out secondary breaking and screening less than the waste concrete block of 40mm, obtains particle diameter and grating respectively and satisfies regenerative powder, recycled fine aggregate and the regenerated coarse aggregate that requires in the above-mentioned prescription;
(2) take by weighing each starting material by formula rate; Earlier 50% water with regenerative powder, regeneration aggregate and prescription total water amount stirs 30s; Add cement, metakaolin and fast repairing agent restir 20s then; Be distributed to polycarboxylate water-reducer in remaining 50% water at last and add, stir 50s and promptly get the above-mentioned environmental fast repairing agent of regenerating entirely.
The X-ray diffractogram demonstration of regenerative powder of the present invention wherein contains portion C a (OH)
2With unhydrated cement, this will help the continuation aquation of gelling material and mineral admixture is active excites.And metakaolin is the very high mineral admixture of a kind of activity, and its active ingredient is removed SiO
2The active A l that also contains a great deal of outward,
2O
3, itself and Ca (OH)
2Pozzolanic reaction except that generating the C-S-H gel, can also generate aquation manosil AS gel and a small amount of hydrated aluminium silicates crystal favourable to slurry ultimate compression strength, and the Ca in the regenerative powder (OH)
2Just in time can excite its lateral reactivity, thereby bring into play its potential, increase the consumption of regenerative powder, can effectively reduce environmental full regeneration Rapid Repair Concrete cost, satisfy the requirement of 24h open to traffic simultaneously.
The ecotype of the present invention Rapid Repair Concrete of regenerating entirely, the ecotype are meant that discarded concrete is fully used, not influence ecological environment; Full regeneration is meant that wherein recycled fine aggregate, regenerated coarse aggregate and regenerative powder all are applied, and have realized full regeneration; Repair fast and be meant at 24h with regard to the open to traffic requirement.
The present invention compared with prior art has following particular performances and advantage:
(1) utilize regenerated coarse aggregate, recycled fine aggregate and the regenerative powder production of the discarded concrete production Rapid Repair Concrete of regenerating entirely, realized discarded concrete complete utilization and resource zero waste truly, the ecological, environmental protective effect is obvious.
(2) through optimizing the combination of regenerative powder and metakaolin, fully inspire the metakaolin lateral reactivity, on the basis of fast repairing agent, mix regenerative powder to greatest extent, can satisfy the requirement of 24 hours open to traffic simultaneously, realize quick mending function.
(3) than other repairing road surface at quick speed material of similar performance, biggest advantage of the present invention is economic environmental protection, and is stable and controllable for quality, meets the ecological ideas development that country advocates.
Embodiment
Through embodiment the present invention is described in further detail below, but the present invention not only is confined to following examples.
Embodiment 1
Component is calculated by weight, and each feed composition of present embodiment concrete is following: comprise 390 parts of cement, 36 parts of metakaolins; 42 parts of regenerative powders; 52 parts of fast repairing agents (the SBTJK-24 type structite of Jiangsu Subotexin Material Co., Ltd), 1097 parts of regenerated coarse aggregates, 591 parts of recycled fine aggregates; 10 parts of polycarboxylate water-reducers, 172 parts in water.The regenerative powder specific surface area is 300m
2/ kg.
Preparation process is: primary crushing and screening are at first carried out with waste concrete block in (1); Particle diameter is got back to primary crushing and screening link once more greater than the waste concrete block of 40mm; Particle diameter then carries out secondary breaking and screening less than the waste concrete block of 40mm, obtains particle diameter and grating respectively and satisfies regenerative powder, recycled fine aggregate and the regenerated coarse aggregate that requires in the above-mentioned prescription;
(2) take by weighing each starting material by formula rate; Earlier 50% water with regenerative powder, regeneration aggregate and prescription total water amount stirs 30s; Add cement, metakaolin and fast repairing agent restir 20s then; Be distributed to polycarboxylate water-reducer in remaining 50% water at last and add, stir 50s and promptly get the above-mentioned environmental fast repairing agent of regenerating entirely.
The technical indicator of the environmental full regeneration Rapid Repair Concrete of present embodiment preparation: 24h ultimate compression strength is 35.5MPa, and flexural tensile strength is 3.8MPa; 28d ultimate compression strength is 59.2MPa, and flexural tensile strength is 5.6MPa, 28d contract with dry rate≤0.15 ‰.
Embodiment 2
Component is calculated by weight, comprises 350 parts of cement, 30 parts of metakaolins, 60 parts of regenerative powders, 60 parts of fast repairing agents, 1102 parts of regenerated coarse aggregates, 568 parts of recycled fine aggregates, 7 parts of polycarboxylate water-reducers, 190 parts in water.The regenerative powder specific surface area is 400m
2/ kg.The preparation method is with embodiment 1.
The technical indicator of the environmental full regeneration Rapid Repair Concrete of present embodiment preparation: 24h ultimate compression strength is 31.7MPa, and flexural tensile strength is 3.5MPa; 28d ultimate compression strength is 49.3MPa, and flexural tensile strength is 5.1MPa, 28d contract with dry rate≤0.15 ‰.
Embodiment 3
Component is calculated by weight, comprises 322 parts of cement, 28 parts of metakaolins, 64 parts of regenerative powders, 46 parts of fast repairing agents, 1144 parts of regenerated coarse aggregates, 539 parts of recycled fine aggregates, 5 parts of polycarboxylate water-reducers, 207 parts in water.The regenerative powder specific surface area is 550m
2/ kg.The preparation method is with embodiment 1.
The technical indicator of the environmental full regeneration Rapid Repair Concrete of present embodiment preparation: 24h ultimate compression strength is 26.7MPa, and flexural tensile strength is 3.2MPa; 28d ultimate compression strength is 38.9MPa, and flexural tensile strength is 4.6MPa, 28d contract with dry rate≤0.15 ‰.
Claims (6)
1. ecotype Rapid Repair Concrete of regenerating entirely is characterized in that: this concrete is by each component preparation of following weight part: 310 ~ 400 parts of cement, 20 ~ 60 parts of metakaolins; 40 ~ 90 parts of regenerative powders; 40 ~ 80 parts of fast repairing agents, 1050 ~ 1200 parts of regenerated coarse aggregates, 520 ~ 600 parts of recycled fine aggregates; 5 ~ 10 parts of polycarboxylate water-reducers, 170 ~ 220 parts in water.
2. the ecotype according to claim 1 Rapid Repair Concrete of regenerating entirely, it is characterized in that: described metakaolin is specific surface area 2000 ~ 2500m
2/ kg, Al
2O
3And SiO
2The massfraction sum is greater than 95% metakaolin.
3. the ecotype according to claim 1 Rapid Repair Concrete of regenerating entirely is characterized in that: described regenerative powder is that the subsidiary particle diameter that forms is 300 ~ 550m through the levigate specific surface area that forms less than 0.075mm again in the regeneration aggregate production process
2/ kg, its Ca (OH)
2Content is greater than 2% powder.
4. the ecotype according to claim 1 Rapid Repair Concrete of regenerating entirely is characterized in that: described recycled fine aggregate be particle diameter greater than 0.075mm, less than 4.75mm, medium sand, the recycled fine aggregate in 2 grating districts.
5. the ecotype according to claim 1 Rapid Repair Concrete of regenerating entirely; It is characterized in that: described regenerated coarse aggregate satisfies particle diameter 4.75 ~ 20mm continuous grading; Faller gill shape content is less than 5% of regenerated coarse aggregate total amount, and powder content is less than 1%, and clod content is less than 0.5%; Crush index is less than 12%, and the soundness mass loss is less than 5%.
6. the ecotype according to claim 1 Rapid Repair Concrete of regenerating entirely is characterized in that: described fast repairing agent SBTJK-24 type structite.
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|---|---|---|---|
| CN2012102975098A CN102807341B (en) | 2012-08-21 | 2012-08-21 | Ecotype full-regeneration rapid repair concrete |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102975098A CN102807341B (en) | 2012-08-21 | 2012-08-21 | Ecotype full-regeneration rapid repair concrete |
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| Publication Number | Publication Date |
|---|---|
| CN102807341A true CN102807341A (en) | 2012-12-05 |
| CN102807341B CN102807341B (en) | 2013-10-16 |
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|---|---|---|---|
| CN2012102975098A Active CN102807341B (en) | 2012-08-21 | 2012-08-21 | Ecotype full-regeneration rapid repair concrete |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106348686A (en) * | 2016-08-24 | 2017-01-25 | 绍兴文理学院 | Rapid repair concrete prepared from foundry waste sand |
| CN106396534A (en) * | 2016-08-24 | 2017-02-15 | 绍兴文理学院 | Quick repair concrete prepared from concrete mixing station wastewater drying powder |
| CN113402236A (en) * | 2021-07-30 | 2021-09-17 | 中国十七冶集团有限公司 | Cement concrete pavement repairing material, preparation process and pavement repairing method |
| CN114149228A (en) * | 2021-12-20 | 2022-03-08 | 饶平县新才建材有限公司 | Environment-friendly recycled concrete |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001151552A (en) * | 1999-11-22 | 2001-06-05 | Shimizu Corp | Premixed concrete material and concrete using the same |
| CN1349948A (en) * | 2000-10-25 | 2002-05-22 | 上海双鹤特种水泥有限公司 | Fast repairing concrete material and its production process |
| CN1821159A (en) * | 2006-03-09 | 2006-08-23 | 上海交通大学 | Sound sucking high elasticity concrete material for road |
-
2012
- 2012-08-21 CN CN2012102975098A patent/CN102807341B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001151552A (en) * | 1999-11-22 | 2001-06-05 | Shimizu Corp | Premixed concrete material and concrete using the same |
| CN1349948A (en) * | 2000-10-25 | 2002-05-22 | 上海双鹤特种水泥有限公司 | Fast repairing concrete material and its production process |
| CN1821159A (en) * | 2006-03-09 | 2006-08-23 | 上海交通大学 | Sound sucking high elasticity concrete material for road |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106348686A (en) * | 2016-08-24 | 2017-01-25 | 绍兴文理学院 | Rapid repair concrete prepared from foundry waste sand |
| CN106396534A (en) * | 2016-08-24 | 2017-02-15 | 绍兴文理学院 | Quick repair concrete prepared from concrete mixing station wastewater drying powder |
| CN106348686B (en) * | 2016-08-24 | 2018-10-19 | 绍兴文理学院 | The Rapid Repair Concrete prepared using cast waste sand |
| CN113402236A (en) * | 2021-07-30 | 2021-09-17 | 中国十七冶集团有限公司 | Cement concrete pavement repairing material, preparation process and pavement repairing method |
| CN114149228A (en) * | 2021-12-20 | 2022-03-08 | 饶平县新才建材有限公司 | Environment-friendly recycled concrete |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102807341B (en) | 2013-10-16 |
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Address after: 315899 Zhejiang city of Ningbo province Beilun xinqie good time of a building 15, 17, 18 floor Patentee after: Green Garden Construction Development Co., Ltd. Address before: 315899 building, building 1078, good times building, 18 Changjiang Road, Beilun District, Zhejiang, Ningbo Patentee before: Huilv Landscape Construction Co.,Ltd. |