CN102887676A - C30 concrete prepared from high-concentration concrete waste slurry water - Google Patents
C30 concrete prepared from high-concentration concrete waste slurry water Download PDFInfo
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- CN102887676A CN102887676A CN2012103220663A CN201210322066A CN102887676A CN 102887676 A CN102887676 A CN 102887676A CN 2012103220663 A CN2012103220663 A CN 2012103220663A CN 201210322066 A CN201210322066 A CN 201210322066A CN 102887676 A CN102887676 A CN 102887676A
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Abstract
The invention discloses C30 concrete prepared from high-concentration concrete waste slurry water. The C30 concrete comprises the following components in part by weight: 80 to 100 parts of cement, 272 to 292 parts of river sand, 400 to 412 parts of stone, 65.6 to 68 parts of waste slurry water, 30 to 36 parts of coal ash, 37 to 45 parts of mineral powder, 3.8 to 4.6 parts of additive, and 0.92 to 1.04 parts of reinforcing agent, wherein the concentration of the waste slurry water is 10 to 15 percent, the additive is a common water reducer which comprises 1.5 mass percent of plastic retaining agent, and the water-reducing rate of the water reducer is 18 percent. The C30 concrete has the advantages that 1) the reinforcing agent has good functions of preventing the combination of fine aggregate in slurry water and cement, and separating the combined fine aggregate and the cement, the plastic retaining agent added in the additive solves the problems that slumps are reduced quickly due to too high concentration of the slurry water, reduces the water using amount of concrete and guarantees the intensity of the concrete; and 2) the C30 concrete is prepared from 10 to 15 percent of slurry water at the high concentration of 10 to 15 percent, so that the pollution of the high-concentration waste slurry water on environment is reduced, and the utilization rate of the high-concentration concrete waste slurry water is improved.
Description
Technical field
The present invention relates to a kind of building material and production technique thereof, specifically, relate to a kind of concrete, relate in particular to a kind of discarded pulp-water of high density that utilizes and be made into concrete.
Background technology
Concrete is one of contemporary topmost civil engineering material.Concrete has the characteristics such as abundant raw material, cheap, production technique is simple, thereby its consumption is increasing.Simultaneously, concrete also possesses the characteristics such as ultimate compression strength is high, good endurance, strength grade wide ranges, so concrete also is important material in the fields such as the exploitation of shipbuilding, mechanical industry, ocean, geothermal engineering.Normal concrete is by cement, coarse aggregate (rubble or cobble), fine aggregate (sand), admixture and water mix, a kind of artificial stone-like material who forms through sclerosis.Sand, stone play skeleton function in concrete, and suppress the contraction of cement; Cement and water form grout, are wrapped in the space between coarse-fine aggregate surface and filler aggregate.Cement slurry is lubricate before sclerosis, makes concrete mix have the works fine performance, and is then that aggregate is cemented together after the sclerosis, forms strong integral body.
At present, producing concrete Major Systems is exactly concrete mixing plant, and contains a large amount of surplus material in the resulting pulp-water of concrete mixing plant brush car.If the surplus material in the pulp-water is separated, Direct precipitation becomes lump to fall as refuse treatment, has not only caused great waste, also environment has been caused very large pollution.In order to improve this present situation, people have attempted pulp-water is used in the concrete preparation process, yet, only limit at present concentration 5% with interior pulp-water.When pulp-water concentration surpasses 5%, because wherein contained fine aggregate increases, cause its adsorptive power to admixture to strengthen, thereby cause the part admixture to lose efficacy, make simultaneously the aobvious change of sand coarse aggregate ratio large, concrete is clamminess, Water usage increases, thereby cause the concrete strength for preparing thus defective, slump-loss is too fast, and can't construct behind the building site has a strong impact on concrete performance.Therefore, surpass at present 5% pulp-water for concentration, it can only be diluted to concentration less than 5%, could use, so just increased processing step, take time and effort, not only reduced production efficiency, and increased production cost.
Summary of the invention
The present invention is directed to the discarded pulp-water of concrete for the production of the existing problem of concrete, a kind of C30 concrete that adopts the preparation of high density concrete waste pulp water is provided, the present invention has realized adopting concentration up to the pulp-water direct production C30 concrete of 10-15%, not only take full advantage of discarded pulp-water, and technique is simple, has guaranteed concrete quality.
Technical scheme of the present invention: a kind of C30 concrete that adopts the preparation of high density concrete waste pulp water, count by weight, comprise following component: 80-100 part cement, 272-292 part river sand, 400-412 part stone, 65.6-68 part useless pulp-water, 30-36 part flyash, 37-45 part breeze, 3.8-4.6 part admixture, 0.92-1.04 part toughener, the concentration of described useless pulp-water is 10-15%.
Preferably, described cement is 42.5 cement, and 28 days intensity of described cement are 47MPa.
Preferably, described breeze is the S95 breeze; The specific surface area of described breeze is 400m
2/ kg, activity index was 95% in 28 days, the degree of mobilization ratio is 100%.
Preferably, the fineness modulus of described river sand is 2.9, and described flyash is the low calcium ash of II level, and described stone is the 5-31.5 continuous grading.
Preferably, described admixture is ordinary water-reducing agent; By massfraction, comprise 1.5% plasticity-retention agent in the described water reducer, the water-reducing rate of described water reducer is 18%.
It is 210-220mm that the prepared C30 concrete of the present invention goes out the machine slump, and divergence is 500-500mm; Slump 190-200mm after 1 hour, divergence 450-500mm; Presetting period is 7 hours 15 minutes-9 hours 30 minutes, and final setting time was at 12 hours 10 minutes-13 hours 20 minutes, and 28 days intensity is 33-40MPa.
Beneficial effect of the present invention is:
(1) toughener of the present invention's employing has played good isolation, centrifugation to the combination of the fine aggregate in the pulp-water and cement; The plasticity-retention agent that adds in the admixture has then solved because the too fast phenomenon of slump-loss that the pulp-water excessive concentration causes has reduced the reinforcement of concrete water yield, has guaranteed the intensity of coagulation degree;
(2) to adopt pulp-water concentration be that the high density pulp-water 10-15% of 10-15% makes the C30 concrete in the present invention, not only reduced the pollution of the discarded pulp-water of high density to environment, also increased the utilising efficiency of high density concrete waste pulp water, processing step is simple, reduce production cost, improved economic benefit.
(3) pulp-water concentration was the high density pulp-water 10-15% making C30 concrete of 10-15% during the present invention adopted, and performance index are fully qualified, can be used as common C30 concrete and are widely used in the various construction works, lower the cost of construction work.
Embodiment
The present invention is described further below in conjunction with embodiment.
Embodiment 1:
A kind of C30 concrete that adopts the preparation of high density concrete waste pulp water, count by weight, comprise following component: 100 parts of cement, 272 parts of river sand, 412 parts of stones, 68 parts of useless pulp-waters, 30 parts of flyash, 37 parts of breezes, 3.88 parts of admixtures, 0.92 part toughener, the concentration of described useless pulp-water is 10%.Described cement is 42.5 cement, and 28 days intensity of described cement are 47MPa.Described breeze is the S95 breeze; The specific surface area of described breeze is 400m
2/ kg, activity index was 95% in 28 days, the degree of mobilization ratio is 100%.The fineness modulus of described river sand is 2.9, and described flyash is the low calcium ash of II level, and described stone is the 5-31.5 continuous grading.Described admixture is ordinary water-reducing agent; By massfraction, comprise 1.5% plasticity-retention agent in the described water reducer, the water-reducing rate of described water reducer is 18%.Each component that takes by weighing is mixed, and stirring to obtain the C30 concrete.
Embodiment 2:
A kind of C30 concrete that adopts the preparation of high density concrete waste pulp water, count by weight, comprise following component: 80 parts of cement, 292 parts of river sand, 400 parts of stones, 65.6 part useless pulp-water, 36 parts of flyash, 45 parts of breezes, 4.64 parts of admixtures, 1.04 part toughener, the concentration of described useless pulp-water is 15%.Described cement is 42.5 cement, and 28 days intensity of described cement are 47MPa.Described breeze is the S95 breeze; The specific surface area of described breeze is 400m
2/ kg, activity index was 95% in 28 days, the degree of mobilization ratio is 100%.The fineness modulus of described river sand is 2.9, and described flyash is the low calcium ash of II level, and described stone is the 5-31.5 continuous grading.Described admixture is ordinary water-reducing agent; By massfraction, comprise 1.5% plasticity-retention agent in the described water reducer, the water-reducing rate of described water reducer is 18%.Each component that takes by weighing is mixed, and stirring to obtain the C30 concrete.
Embodiment 3:
A kind of C30 concrete that adopts the preparation of high density concrete waste pulp water, meter comprises following component: 90 parts of cement, 285 parts of river sand by weight, 408 parts of stones, 66 parts of useless pulp-waters, 33 parts of flyash, 41 parts of breezes, 4 parts of admixtures, 1 part of toughener, the concentration of described useless pulp-water is 11%.Described cement is 42.5 cement, and 28 days intensity of described cement are 47MPa.Described breeze is the S95 breeze; The specific surface area of described breeze is 400m
2/ kg, activity index was 95% in 28 days, the degree of mobilization ratio is 100%.The fineness modulus of described river sand is 2.9, and described flyash is the low calcium ash of II level, and described stone is the 5-31.5 continuous grading.Described admixture is ordinary water-reducing agent; By massfraction, comprise 1.5% plasticity-retention agent in the described water reducer, the water-reducing rate of described water reducer is 18%.Each component that takes by weighing is mixed, and stirring to obtain the C30 concrete.
Embodiment 4:
A kind of C30 concrete that adopts the preparation of high density concrete waste pulp water, meter comprises following component: 90 parts of cement, 285 parts of river sand by weight, 408 parts of stones, 66 parts of useless pulp-waters, 33 parts of flyash, 41 parts of breezes, 4 parts of admixtures, 1 part of toughener, the concentration of described useless pulp-water is 13%.Described cement is 42.5 cement, and 28 days intensity of described cement are 47MPa.Described breeze is the S95 breeze; The specific surface area of described breeze is 400m
2/ kg, activity index was 95% in 28 days, the degree of mobilization ratio is 100%.The fineness modulus of described river sand is 2.9, and described flyash is the low calcium ash of II level, and described stone is the 5-31.5 continuous grading.Described admixture is ordinary water-reducing agent; By massfraction, comprise 1.5% plasticity-retention agent in the described water reducer, the water-reducing rate of described water reducer is 18%.Each component that takes by weighing is mixed, and stirring to obtain the C30 concrete.
Embodiment 5:
A kind of C30 concrete that adopts the preparation of high density concrete waste pulp water, meter comprises following component: 90 parts of cement, 285 parts of river sand by weight, 408 parts of stones, 66 parts of useless pulp-waters, 33 parts of flyash, 41 parts of breezes, 4 parts of admixtures, 1 part of toughener, the concentration of described useless pulp-water is 15%.Described cement is 42.5 cement, and 28 days intensity of described cement are 47MPa.Described breeze is the S95 breeze; The specific surface area of described breeze is 400m
2/ kg, activity index was 95% in 28 days, the degree of mobilization ratio is 100%.The fineness modulus of described river sand is 2.9, and described flyash is the low calcium ash of II level, and described stone is the 5-31.5 continuous grading.Described admixture is ordinary water-reducing agent; By massfraction, comprise 1.5% plasticity-retention agent in the described water reducer, the water-reducing rate of described water reducer is 18%.Each component that takes by weighing is mixed, and stirring to obtain the C30 concrete.
The actual weight of each component among four embodiment of table 1
The concrete performance index of C30 of preparing among four embodiment of table 2
Claims (5)
1. C30 concrete that adopts high density concrete waste pulp water preparation, it is characterized in that: count by weight, comprise following component: 80-100 part cement, 272-292 part river sand, 400-412 part stone, 65.6-68 part useless pulp-water, 30-36 part flyash, 37-45 part breeze, 3.8-4.6 part admixture, 0.92-1.04 part toughener,, the concentration of described useless pulp-water is 10-15%.
2. a kind of C30 concrete that adopts high density concrete waste pulp water preparation according to claim 1, it is characterized in that: described cement is 42.5 cement, 28 days intensity of described cement are 47MPa.
3. a kind of C30 concrete that adopts high density concrete waste pulp water preparation according to claim 1, it is characterized in that: described breeze is the S95 breeze; The specific surface area of described breeze is 400m
2/ kg, activity index was 95% in 28 days, the degree of mobilization ratio is 100%.
4. a kind of C30 concrete that adopts high density concrete waste pulp water preparation according to claim 1, it is characterized in that: the fineness modulus of described river sand is 2.9, and described flyash is the low calcium ash of II level, and described stone is the 5-31.5 continuous grading.
5. a kind of C30 concrete that adopts high density concrete waste pulp water preparation according to claim 1, it is characterized in that: described admixture is ordinary water-reducing agent; By massfraction, comprise 1.5% plasticity-retention agent in the described water reducer, the water-reducing rate of described water reducer is 18%.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104446211A (en) * | 2014-12-05 | 2015-03-25 | 济南长兴建设集团有限公司 | Wall brick prepared by virtue of ready-mixed concrete waste slurry |
| CN105084842A (en) * | 2015-10-08 | 2015-11-25 | 江苏广亚建材有限公司 | Concrete formula |
| CN105776994A (en) * | 2016-02-03 | 2016-07-20 | 绍兴文理学院 | Self-compacting concrete prepared from concrete mixing station waste slurry |
| CN105819793A (en) * | 2016-03-31 | 2016-08-03 | 湖北昌耀新材料股份有限公司 | Concrete for shortening steam curing periods of cement electric poles |
| CN106278032A (en) * | 2016-08-12 | 2017-01-04 | 绍兴文理学院 | A kind of use concrete mixing plant give up slurry preparation low dry shrinkage concrete |
| CN107021704A (en) * | 2017-05-09 | 2017-08-08 | 重庆聚融建设（集团）股份有限公司 | A kind of C30 concrete and preparation method thereof |
| CN110482973A (en) * | 2019-09-12 | 2019-11-22 | 徐州金盟新型建材有限公司 | It is a kind of based on trade waste be raw material concrete and preparation method thereof |
| CN110627433A (en) * | 2019-09-12 | 2019-12-31 | 深圳市绿志新型建材研究院有限公司 | Recycled aggregate concrete and preparation method thereof |
| CN110922147A (en) * | 2019-10-29 | 2020-03-27 | 江苏盐砼新材料科技有限公司 | Tail slurry autoclaved aerated concrete block and preparation method thereof |
| CN111704413A (en) * | 2020-06-24 | 2020-09-25 | 南宁市嘉大混凝土有限公司 | Concrete prepared from waste slurry of concrete mixing plant |
| CN111732405A (en) * | 2020-06-22 | 2020-10-02 | 福州市鸿生建材有限公司 | Concrete regenerated by utilizing building concrete waste mud |
| CN114890744A (en) * | 2022-05-13 | 2022-08-12 | 中建西部建设西南有限公司 | Green low-carbon concrete and preparation method thereof |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104446211A (en) * | 2014-12-05 | 2015-03-25 | 济南长兴建设集团有限公司 | Wall brick prepared by virtue of ready-mixed concrete waste slurry |
| CN105084842A (en) * | 2015-10-08 | 2015-11-25 | 江苏广亚建材有限公司 | Concrete formula |
| CN105776994A (en) * | 2016-02-03 | 2016-07-20 | 绍兴文理学院 | Self-compacting concrete prepared from concrete mixing station waste slurry |
| CN105819793A (en) * | 2016-03-31 | 2016-08-03 | 湖北昌耀新材料股份有限公司 | Concrete for shortening steam curing periods of cement electric poles |
| CN106278032B (en) * | 2016-08-12 | 2018-11-30 | 绍兴文理学院 | A kind of low dry shrinkage concrete prepared using concrete mixing plant waste pulp |
| CN106278032A (en) * | 2016-08-12 | 2017-01-04 | 绍兴文理学院 | A kind of use concrete mixing plant give up slurry preparation low dry shrinkage concrete |
| CN107021704A (en) * | 2017-05-09 | 2017-08-08 | 重庆聚融建设（集团）股份有限公司 | A kind of C30 concrete and preparation method thereof |
| CN110482973A (en) * | 2019-09-12 | 2019-11-22 | 徐州金盟新型建材有限公司 | It is a kind of based on trade waste be raw material concrete and preparation method thereof |
| CN110627433A (en) * | 2019-09-12 | 2019-12-31 | 深圳市绿志新型建材研究院有限公司 | Recycled aggregate concrete and preparation method thereof |
| CN110922147A (en) * | 2019-10-29 | 2020-03-27 | 江苏盐砼新材料科技有限公司 | Tail slurry autoclaved aerated concrete block and preparation method thereof |
| CN110922147B (en) * | 2019-10-29 | 2021-12-28 | 江苏盐砼新材料科技有限公司 | Tail slurry autoclaved aerated concrete block and preparation method thereof |
| CN111732405A (en) * | 2020-06-22 | 2020-10-02 | 福州市鸿生建材有限公司 | Concrete regenerated by utilizing building concrete waste mud |
| CN111704413A (en) * | 2020-06-24 | 2020-09-25 | 南宁市嘉大混凝土有限公司 | Concrete prepared from waste slurry of concrete mixing plant |
| CN114890744A (en) * | 2022-05-13 | 2022-08-12 | 中建西部建设西南有限公司 | Green low-carbon concrete and preparation method thereof |
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