CN104973841A - Preparation method of waterproof concrete - Google Patents
Preparation method of waterproof concrete Download PDFInfo
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- CN104973841A CN104973841A CN201510397104.5A CN201510397104A CN104973841A CN 104973841 A CN104973841 A CN 104973841A CN 201510397104 A CN201510397104 A CN 201510397104A CN 104973841 A CN104973841 A CN 104973841A
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Abstract
Provided is a preparation method of a waterproof concrete; raw material components comprising cement, sand, carpolite, water, a water reducing agent, a swelling agent and fly ash are stirred and mixed and cured to obtain the waterproof concrete; the swelling agent allows the concrete to swell in a constrained environment, communication holes in the concrete are significantly reduced, the anti-permeability waterproof properties are enhanced, and the strength is also increased significantly; with addition of the water reducing agent, the stability and performance of the concrete are enhanced, problems of common dissociation and water segregation and collapsed slump loss of large-liquidity pumped concrete are avoided, a non-vibrating self-compacting effect is achieved, and construction is convenient; with the use of the fly ash, concrete pores and capillary pores are filled, and with the addition of the fly ash, a pore structure of the concrete is improved and the compactness is increased; and the prepared waterproof concrete is good in self-compacting performance and excellent in anti-permeability and anti-crack performance, and has the later strength improved significantly.
Description
Technical field
The invention belongs to building material technical field, particularly a kind of preparation method of water-proof concrete.
Background technology
Along with the development of component materials of concrete, people are not only confined to pressure resistance speed to concrete performance requriements, and more focus on the balance and coordination of the overall targets such as concrete weather resistance, antiseepage water resistance and self compacting ability.Current water-proof concrete has been commonly underground works circle as the waterproof measure of project subject and has accepted.Engineering waterproofing can be divided into two parts: one is the waterproof of main structure body, and two is waterproof of detail structure particularly construction joint, movement joint, post-cast strip.Current project subject adopt conventional waterproof concrete water-proof effect still can, and the percolating water phenomenon of detail structure, particularly construction joint, movement joint is more.For underground directly and the enclosed structure of groundwater contacts, as building basement, because it is buried in underground, moment is subject to the osmosis of underground water, as bad in waterproof problem process, will underground water be caused to leak into technical interior, affect personnel and work normally and life therein, there is percolating water then can make technical interior fit up and equipment quickening corrosion, and therefore applying new waterproof concrete solution underground concrete structure leakage problem has been a problem that can not be ignored.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of preparation method of water-proof concrete, the water-proof concrete self compacting ability of preparation is good, and impervious splitting resistance is excellent, and later strength significantly improves.
In order to achieve the above object, the technical scheme taked of the present invention is as follows:
A kind of water-proof concrete, its starting components is by quality of materials contained by every cubic metre:
Cement: 476-549kg;
Sand: 552-627kg;
Stone: 609-692kg;
Water: 213-246kg;
Water reducer: 10.6-13kg;
Swelling agent: 53-65kg;
Flyash: 212-235kg.
Described cement is composite Portland cement, 28 days ultimate compression strength >=32.5MPa.
Described sand is medium sand, silt content < 3%, water ratio < 1%.
Described stone is cobble, particle size range 5 ~ 20mm, continuous grading, silt content < 1%, water ratio < 0.5%.
Described flyash is second class powered coal ash.
Described swelling agent is sulplo-aluminate type swelling agent.
Described water reducer is naphthalene water reducer.
Described water is domestic water.
The preparation method of described a kind of water-proof concrete, comprises following steps:
1) get the raw materials ready:
By standard sandstone sieve screening sand, stone raw material, purchase medium sand and continuous grading cobble, with 4.75mm, 2.36mm, 1.18mm, 0.6mm, 0.3mm and 0.15mm square hole sieve composition bushing screen screening sand, make the sand particle of counterparty's hole sizer retain accumulated retained percentage to control respectively 0-10%, 0-25%, 10-50%, 41-70%, in the numerical range of 70-92% and 90-100%, sieve each sand component of rear mixing and namely obtain medium sand, with 19mm, 16mm, 9.5mm, 4.75mm and 2.36mm square hole sieve composition bushing screen screening stone, make the stone particle of counterparty's hole sizer retain accumulated retained percentage to control respectively 0-10%, 0%, 40-80%, in the numerical range of 90-100% and 95-100%, sieve rear mixing stone component and namely obtain continuous grading stone,
2) stir:
In starting components ratio by load weighted cement, sand, flyash adds dry mixing 25-35 in mixing drum makes it mix second, again water reducer, swelling agent are mixed in water and form mixed aqueous solution, then mixed aqueous solution is added in mixing drum, continue to stir 55-65 second, make it mix the uniform slurry of quality, then stone is added in mixing drum stir 115-125 seconds; Then by the removal from stirrer of the mixture in mixing drum, be poured on and mix on dish, then through manually mixing and stirring 55-65 second, form water-proof concrete mixture.
3) maintenance:
After building, maintenance 6-8 days in the wet environment of 5--25 DEG C, obtains water-proof concrete.
Beneficial effect of the present invention:
With the addition of swelling agent, water reducer and flyash in water-proof concrete of the present invention, mixing of swelling agent improves concrete seif-citing rate, and it can make concrete in process of setting, produce micro-scale volume expansion, the concrete contraction of effective compensation; Concrete degree of compactness can be increased under the sidewise restraint of template, reduce shrinkage cracking, improve its anti-permeability performance; Mixing of water reducer enhances concrete stability and serviceability, it can make concrete water consumption and water cement ratio constant time increase mobility, improve intensity and education resistance, effectively prevent the common segregation bleeding of large fluidity pump concrete and loss of slump problem, reach the self-compacting effect of without vibration, facilitate construction; Due to the main component SiO of flyash
2can generate the small ettringite of indissoluble with water generation hydration reaction, this crystal is evenly distributed in grout, filling pore and pore, and mixing of it improves concrete pore structure, increases degree of compactness.The water-proof concrete that the present invention produces realizes under normal concrete manufacturing condition, and raw materials is commerical ready-mixed concrete conventional material, and cheap, material is easy to get.
Embodiment
Embodiment 1
A kind of water-proof concrete, its starting components is by quality of materials contained by every cubic metre:
Cement: 549kg;
Sand: 552kg;
Stone: 609kg;
Water: 246kg;
Water reducer: 13kg;
Swelling agent: 65kg;
Flyash: 235kg.
Described cement is composite Portland cement, and 28 days ultimate compression strength is 35.8MPa;
Described sand is medium sand, silt content 2.83%, water ratio 0.4%;
Described stone is cobble, particle size range 5 ~ 20mm, continuous grading, silt content 0.73%, water ratio 0.32%;
Described flyash is second class powered coal ash, density 1.98g/cm
3; Described swelling agent is HEA type swelling agent; Described water reducer is one-level FDN type water reducer, water-reducing rate 30%; Described water is Drinking Water.
A preparation method for water-proof concrete, comprises following steps:
1) get the raw materials ready:
By standard sandstone sieve screening sand, stone raw material, purchase medium sand and continuous grading cobble, with 4.75mm, 2.36mm, 1.18mm, 0.6mm, 0.3mm and 0.15mm square hole sieve composition bushing screen screening sand, make the sand particle of counterparty's hole sizer retain accumulated retained percentage to control respectively 0-10%, 0-25%, 10-50%, 41-70%, in the numerical range of 70-92% and 90-100%, sieve each sand component of rear mixing and namely obtain 490 medium sands, with 19mm, 16mm, 9.5mm, 4.75mm and 2.36mm square hole sieve composition bushing screen screening stone, make the stone particle of counterparty's hole sizer retain accumulated retained percentage to control respectively 0-10%, 0%, 40-80%, in the numerical range of 90-100% and 95-100%, sieve rear mixing stone component and namely obtain continuous grading stone,
2) stir:
In starting components ratio by load weighted cement, sand, flyash adds dry mixing in mixing drum within 25 seconds, makes it mix, again water reducer, swelling agent are mixed in water and form mixed aqueous solution, then mixed aqueous solution is added in mixing drum, continue stirring 55 seconds, make it mix the uniform slurry of quality, then stone is added in mixing drum stir 115 seconds; Then by the removal from stirrer of the mixture in mixing drum, be poured on and mix on dish, then through manually mixing and stirring 55 seconds, form water-proof concrete mixture.
3) maintenance
After building, maintenance 7 days in the wet environment of 5 DEG C, obtains water-proof concrete.
The beneficial effect of the present embodiment: the water-proof concrete strength grade of this embodiment is C20, slump 215mm, seepage-resistant grade P4,28 days restriction contract with dry rate-4.8 × 10 in air
-4, compensate for shrinkage is functional.
Embodiment 2
A kind of water-proof concrete, its starting components is by quality of materials contained by every cubic metre:
Cement: 476kg;
Sand: 623kg;
Stone: 687kg;
Water: 213kg;
Water reducer: 11kg;
Swelling agent: 56kg;
Flyash: 227kg.
Described cement is composite Portland cement, 28 days ultimate compression strength 35.8MPa;
Described sand is medium sand, silt content 2.83%, water ratio 0.4%;
Described stone is cobble, particle size range 5 ~ 20mm, continuous grading, silt content 0.73%, water ratio 0.32%;
Described flyash is second class powered coal ash; Described swelling agent is HEA type swelling agent; Described water reducer is one-level FDN type water reducer, water-reducing rate 30%; Water is domestic water.
A preparation method for water-proof concrete, comprises following steps:
1) get the raw materials ready:
By standard sandstone sieve screening sand, stone raw material, purchase medium sand and continuous grading cobble, with 4.75mm, 2.36mm, 1.18mm, 0.6mm, 0.3mm and 0.15mm square hole sieve composition bushing screen screening sand, make the sand particle of counterparty's hole sizer retain accumulated retained percentage to control respectively 0-10%, 0-25%, 10-50%, 41-70%, in the numerical range of 70-92% and 90-100%, sieve each sand component of rear mixing and namely obtain medium sand, with 19mm, 16mm, 9.5mm, 4.75mm and 2.36mm square hole sieve composition bushing screen screening stone, make the stone particle of counterparty's hole sizer retain accumulated retained percentage to control respectively 0-10%, 0%, 40-80%, in the numerical range of 90-100% and 95-100%, sieve rear mixing stone component and namely obtain continuous grading stone,
2) stir:
In starting components ratio by load weighted cement, sand, flyash adds dry mixing in mixing drum within 30 seconds, makes it mix, again water reducer, swelling agent are mixed in water and form mixed aqueous solution, then mixed aqueous solution is added in mixing drum, continue stirring 60 seconds, make it mix the uniform slurry of quality, then stone is added in mixing drum stir 120 seconds; Then by the removal from stirrer of the mixture in mixing drum, be poured on and mix on dish, then through manually mixing and stirring 60 seconds, form water-proof concrete mixture.
3) maintenance
After building, maintenance 6 days in the wet environment of 15 DEG C, obtains water-proof concrete.
The beneficial effect of the present embodiment: the water-proof concrete strength grade of this embodiment is C25, slump 143mm, and seepage-resistant grade P4, after 1 year, ultimate compression strength can reach 40MPa.
Embodiment 3
A kind of water-proof concrete, its starting components is by quality of materials contained by every cubic metre:
Cement: 490kg;
Sand: 627kg;
Stone: 692kg;
Water: 220kg;
Water reducer: 10.6kg;
Swelling agent: 53kg;
Flyash: 212kg.
Described cement is composite Portland cement, 28 days ultimate compression strength 35.8MPa;
Described sand is medium sand, silt content 2.83%, water ratio 0.4%;
Described stone is cobble, particle size range 5 ~ 20mm, continuous grading, silt content 0.73%, water ratio 0.32%;
Described flyash is second class powered coal ash; Described swelling agent is HEA type swelling agent; Described water reducer is one-level FDN type water reducer, water-reducing rate 30%; Water is domestic water.
A preparation method for water-proof concrete, comprises following steps:
1) get the raw materials ready:
By standard sandstone sieve screening sand, stone raw material, purchase medium sand and continuous grading cobble, with 4.75mm, 2.36mm, 1.18mm, 0.6mm, 0.3mm and 0.15mm square hole sieve composition bushing screen screening sand, make the sand particle of counterparty's hole sizer retain accumulated retained percentage to control respectively 0-10%, 0-25%, 10-50%, 41-70%, in the numerical range of 70-92% and 90-100%, sieve each sand component of rear mixing and namely obtain medium sand, with 19mm, 16mm, 9.5mm, 4.75mm and 2.36mm square hole sieve composition bushing screen screening stone, make the stone particle of counterparty's hole sizer retain accumulated retained percentage to control respectively 0-10%, 0%, 40-80%, in the numerical range of 90-100% and 95-100%, sieve rear mixing stone component and namely obtain continuous grading stone,
2) stir:
In starting components ratio by load weighted cement, sand, flyash adds dry mixing in mixing drum within 35 seconds, makes it mix, again water reducer, swelling agent are mixed in water and form mixed aqueous solution, then mixed aqueous solution is added in mixing drum, continue stirring 65 seconds, make it mix the uniform slurry of quality, then stone is added in mixing drum stir 125 seconds; Then by the removal from stirrer of the mixture in mixing drum, be poured on and mix on dish, then through manually mixing and stirring 65 seconds, form water-proof concrete mixture.
3) maintenance
After building, maintenance 8 days in the wet environment of 25 DEG C, obtains water-proof concrete.
The beneficial effect of the present embodiment: the water-proof concrete strength grade of this embodiment is C25, slump 218mm, seepage-resistant grade P4,28 days restriction contract with dry rate-1.2 × 10 in air
-4, compensate for shrinkage is functional.
Claims (9)
1. a water-proof concrete, is characterized in that: its starting components is by quality of materials contained by every cubic metre:
Cement: 476-549kg;
Sand: 552-627kg;
Stone: 609-692kg;
Water: 213-246kg;
Water reducer: 10.6-13kg;
Swelling agent: 53-65kg;
Flyash: 212-235kg.
2. a kind of water-proof concrete according to claim 1, is characterized in that: described cement is composite Portland cement, 28 days ultimate compression strength >=32.5MPa.
3. a kind of water-proof concrete according to claim 1, is characterized in that: described sand is medium sand, silt content < 3%, water ratio < 1%.
4. a kind of water-proof concrete according to claim 1, is characterized in that: described stone is cobble, particle size range 5 ~ 20mm, continuous grading, silt content < 1%, water ratio < 0.5%.
5. a kind of water-proof concrete according to claim 1, is characterized in that: described flyash is second class powered coal ash.
6. a kind of water-proof concrete according to claim 1, is characterized in that: described swelling agent is sulplo-aluminate type swelling agent.
7. a kind of water-proof concrete according to claim 1, is characterized in that: described water reducer is naphthalene water reducer.
8. a kind of water-proof concrete according to claim 1, is characterized in that: described water is domestic water.
9. the preparation method of a kind of water-proof concrete according to claim 1, is characterized in that: comprise following steps:
1) get the raw materials ready:
By standard sandstone sieve screening sand, stone raw material, purchase medium sand and continuous grading cobble, with 4.75mm, 2.36mm, 1.18mm, 0.6mm, 0.3mm and 0.15mm square hole sieve composition bushing screen screening sand, make the sand particle of counterparty's hole sizer retain accumulated retained percentage to control respectively 0-10%, 0-25%, 10-50%, 41-70%, in the numerical range of 70-92% and 90-100%, sieve each sand component of rear mixing and namely obtain medium sand, with 19mm, 16mm, 9.5mm, 4.75mm and 2.36mm square hole sieve composition bushing screen screening stone, make the stone particle of counterparty's hole sizer retain accumulated retained percentage to control respectively 0-10%, 0%, 40-80%, in the numerical range of 90-100% and 95-100%, sieve rear mixing stone component and namely obtain continuous grading stone,
2) stir:
In starting components ratio by load weighted cement, sand, flyash adds dry mixing 25-35 in mixing drum makes it mix second, again water reducer, swelling agent are mixed in water and form mixed aqueous solution, then mixed aqueous solution is added in mixing drum, continue to stir 55-65 second, make it mix the uniform slurry of quality, then stone is added in mixing drum stir 115-125 seconds; Then by the removal from stirrer of the mixture in mixing drum, be poured on and mix on dish, then through manually mixing and stirring 55-65 second, form water-proof concrete mixture.
3) maintenance:
After building, maintenance 6-8 days in the wet environment of 5--25 DEG C, obtains water-proof concrete.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105399376A (en) * | 2015-12-09 | 2016-03-16 | 文登蓝岛建筑工程有限公司 | Concrete containing waste molecular sieve catalyst and preparation method thereof |
| CN105465613A (en) * | 2015-11-19 | 2016-04-06 | 中建七局第二建筑有限公司 | Urban subsurface drainage pipeline leakage locating system and construction method thereof |
| CN106122893A (en) * | 2016-06-23 | 2016-11-16 | 青岛海川建设集团有限公司 | Large-scale interior space duct type daylight illuminating system construction technology |
| CN106116379A (en) * | 2016-07-05 | 2016-11-16 | 西京学院 | A kind of expanding cement water-proof concrete and preparation method thereof |
| CN106630860A (en) * | 2017-01-09 | 2017-05-10 | 重庆忠臬建筑科技有限公司 | Rigid self-waterproofing concrete and self-waterproofing building structure |
| CN108623246A (en) * | 2017-03-24 | 2018-10-09 | 北京市小红门混凝土有限责任公司 | Frost-resistant concrete and preparation method thereof |
| CN109095802A (en) * | 2018-08-27 | 2018-12-28 | 宁波联城住工科技有限公司 | Expansive agent for concrete, concrete and preparation method thereof |
| CN109095863A (en) * | 2018-10-08 | 2018-12-28 | 宜昌鑫大兴混凝土有限公司 | Self-compacting concrete and preparation method thereof |
| CN111875317A (en) * | 2020-08-04 | 2020-11-03 | 广州城市职业学院 | Rigid self-compacting waterproof concrete for underground engineering building construction and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465613A (en) * | 2015-11-19 | 2016-04-06 | 中建七局第二建筑有限公司 | Urban subsurface drainage pipeline leakage locating system and construction method thereof |
| CN105399376A (en) * | 2015-12-09 | 2016-03-16 | 文登蓝岛建筑工程有限公司 | Concrete containing waste molecular sieve catalyst and preparation method thereof |
| CN106122893A (en) * | 2016-06-23 | 2016-11-16 | 青岛海川建设集团有限公司 | Large-scale interior space duct type daylight illuminating system construction technology |
| CN106116379A (en) * | 2016-07-05 | 2016-11-16 | 西京学院 | A kind of expanding cement water-proof concrete and preparation method thereof |
| CN106630860B (en) * | 2017-01-09 | 2019-05-17 | 重庆忠臬建筑科技有限公司 | A kind of rigid self-waterproof concrete and self waterproofing building structure |
| CN106630860A (en) * | 2017-01-09 | 2017-05-10 | 重庆忠臬建筑科技有限公司 | Rigid self-waterproofing concrete and self-waterproofing building structure |
| CN108623246A (en) * | 2017-03-24 | 2018-10-09 | 北京市小红门混凝土有限责任公司 | Frost-resistant concrete and preparation method thereof |
| CN108623246B (en) * | 2017-03-24 | 2021-04-20 | 北京市小红门混凝土有限责任公司 | Frost-resistant concrete and preparation method thereof |
| CN109095802A (en) * | 2018-08-27 | 2018-12-28 | 宁波联城住工科技有限公司 | Expansive agent for concrete, concrete and preparation method thereof |
| CN109095802B (en) * | 2018-08-27 | 2021-11-09 | 广东睿住住工科技有限公司 | Expansive agent for concrete, concrete and preparation method thereof |
| CN109095863A (en) * | 2018-10-08 | 2018-12-28 | 宜昌鑫大兴混凝土有限公司 | Self-compacting concrete and preparation method thereof |
| CN111875317A (en) * | 2020-08-04 | 2020-11-03 | 广州城市职业学院 | Rigid self-compacting waterproof concrete for underground engineering building construction and preparation method thereof |
| CN111875317B (en) * | 2020-08-04 | 2022-02-01 | 广州城市职业学院 | Rigid self-compacting waterproof concrete for underground engineering building construction and preparation method thereof |
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Application publication date: 20151014 |
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