CN1031962A - Process of bone material concrete wrapping mortar - Google Patents
Process of bone material concrete wrapping mortar Download PDFInfo
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- CN1031962A CN1031962A CN 87106271 CN87106271A CN1031962A CN 1031962 A CN1031962 A CN 1031962A CN 87106271 CN87106271 CN 87106271 CN 87106271 A CN87106271 A CN 87106271A CN 1031962 A CN1031962 A CN 1031962A
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- concrete
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- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Treatment Of Sludge (AREA)
Abstract
Process of bone material concrete wrapping mortar.Belong to the cement concrete stirring means.Its principal character is earlier cement and water to be made clean slurry, stirs into compound with thick, fine aggregate then.Clean slurry package aggregate concrete is compared with common stirring technique, and under the identical condition of match ratio, 28 days compression strength of concrete improves 20～56%, and under 28 days compression strength the same terms, the folk prescription concrete is saved cement 10～20%.
Description
The invention belongs to cement concrete mixing process, is with the stirring technique of clean slurry package aggregate for its principal character.
Common concrete stirring technology is that cement, water, fine aggregate and coarse aggregate are stirred into compound jointly.The concrete that adopts this technology to stir into, its intensity is lower.Utilization improves stirring technique and improves concrete intensity, existing several different methods.In Japan, adopted cement to wrap up in sand technology, it is characterized in that elder generation transfers to suitable scope with the surface moisture content of sand, then sand is added concrete mixers with the whole cement that design by match ratio and stir jointly, add coarse aggregate, remaining water and water reducer at last and stir into concrete mixture.Cement is wrapped up in 28 days compression strength of sand concrete and is improved 0～30%.At home, existing Chinese Research Institute for Building Sciences, Shanxi Prov. Architectural Scientific Research Inst., 13 metallurgical construction companies of Ministry of Metallurgical Industry and Changzhou are built worker office and are developed into cement and wrap up in sandstone technology, its process characteristic is: will stir in concrete mixer by the water that match ratio designs desired whole sandstone and 70～75%, make thick, fine aggregate is wetting, adding whole cement then stirs, make thick, fine aggregate surface attachment cement mortar, add all the other water of 25～30% at last and stir into concrete mixture.Adopt 28 days compression strength of concrete that cement is wrapped up in sandstone technology to improve about 10%.Cement is wrapped up in sand concrete technology and cement and is wrapped up in sandstone technology and all be difficult to thoroughly to prevent free moisture to the concentrating of aggregate interface (especially coarse aggregate interface), and its intensity increase rate is restricted.
Purpose of the present invention aims to provide a kind of clean slurry package aggregate technology, overcomes above-mentioned technology weak point.
Major technique feature of the present invention is: earlier will be by whole cement, part water and whole water reducer of match ratio design, perhaps whole cement and part water, in clean slurry mixer, stir into clean slurry, to starch only then with thick, fine aggregate and in concrete mixer, stir, thick, surperficial parcel one deck of fine aggregate is starched only, added remaining water at last and stir into concrete mixture.Coarse aggregate can be natural in rubble, crushed gravel or cobble; Also can be artificial light aggregate such as leca, haydites of book structure etc.Water reducer can be common water reducer (as lignosulfonates), high efficiency water reducing agent (as the sodium formaldehyde condensation products, its naphthalene check figure is more than 9), also can be with common and high efficiency water reducing agent compound.
The present invention compares with common stirring technique, and under the match ratio same case, 28 days compression strength of concrete improves 20～56%, and under 28 days compression strength the same terms, folk prescription concrete cement consumption saves 10～20%, and its techno-economic effect is remarkable.The present invention is applicable to and gives system concrete component and cast-in-place concrete engineering.
Accompanying drawing is the concrete process flow diagram of the present invention.
Among the figure: 1. cement; 2. water; 3. water reducer; 4. starch mixer only; 5. clean slurry; 6. fine aggregate; 7. coarse aggregate; 8. concrete mixer; 9. compound; 10. water; 11. concrete mixture.
The invention will be further described below in conjunction with accompanying drawing: earlier will be by whole cement (1) of match ratio design, part water (2) and whole water reducer (3), its weight is 0.3～1.5% of cement (1) weight, stirring into the ratio of mud through clean slurry mixer (4) is 0.25～0.4 clean slurry (5), to starch (5) only then, fine aggregate (6) and coarse aggregate (7) stir into compound (9) in concrete mixer (8), its mixing time is 1～3 minute, in compound (9), add remaining water (10) at last, stir into concrete mixture (11).
The technical process of following examples is seen accompanying drawing.
Embodiment
Example one, concrete mix (weight ratio)
Cement: No. 525 portland cements 1.00 in Ji Dong cement plant
Proportion 3.20g/cm
3
Water: running water 0.65
Sand: modulus of fineness 2.95, apparent gravity 2.62g/cm
3; 2.86
Stone: 5～20mm rubble, apparent gravity 2.79g/cm
34.65
Water reducer: wooden naphthalene sulfonic acids calcium 0.003
NF 0.007
Process conditions
The ratio of mud of clean slurry (5) is 0.36, mixing time 2 minutes, the mixing time of compound (9) 1～2 minute, the mixing time of compound (11) 0.5～1 minute.
Effect:
28 days compression strength 568kgf/cm of clean slurry package aggregate concrete
2(55.7MPa), 28 days compression strength of common stirring technique concrete is 443kgf/cm
2(43.4MPa), compression strength improves 28%.
Example two, concrete mix (weight ratio)
Cement: No. 425 slag cements 1.00 in cement plant are newly changed in the Hunan
Water: running water 0.55
Sand: modulus of fineness 2.95, apparent gravity 2.62g/cm
32.24
Stone: 5～20mm rubble, apparent gravity 2.79g/cm
33.93
Water reducer: NF 0.01
Process conditions
The ratio of mud of clean slurry (5) is 0.37, mixing time 2 minutes, and the mixing time of compound (9) is 1～2 minute, the mixing time of compound (11) 0.5～1 minute.
Effect
28 days compression strength 465kgf/cm of clean slurry package aggregate concrete
2(45.6MPa), common stirring technique concrete 346kgf/cm
2(33.9MPa), compression strength improves 34%.
Example three, concrete mix (weight ratio)
Cement: No. 525 ordinary cements 1.00 in cement plant, Xiangxiang, Hunan
Water: running water 0.45
Sand: modulus of fineness 2.95, apparent gravity 2.62g/cm
31.69
Stone: 5～20mm rubble, apparent gravity 2.79g/cm
33.21
Water reducer: wooden naphthalene sulfonic acids calcium 0.0015
NF 0.0045
Process conditions
The ratio of mud of clean slurry (5) is 0.30, mixing time 2 minutes, and the mixing time of compound (9) is 1～2 minute, the mixing time of compound (11) is 0.5～1 minute.
Effect
28 days compression strength of clean slurry package aggregate concrete is 649kgf/cm
2(63.6MPa), 28 days compression strength of common stirring technique concrete is 471kgf/cm
2(46.2MPa), compression strength improves 38%.
Example four, concrete mix (weight ratio)
Cement: No. 525 portland cements that cement plant, the south of the River, Nanjing produces
Proportion 3.20g/cm
31.00
Water: running water 0.40
Sand: modulus of fineness 2.95, apparent gravity 2.62g/cm
31.52
Haydite: 5～20mm haydites of book structure, particle unit weight 1.27g/cm
31.35
Water reducer: NF high efficiency water reducing agent 0.01
Process conditions
Clean slurry (5) ratio of mud is 0.25, mixing time 2 minutes, compound (9) mixing time 2 minutes, compound (11) mixing time 1 minute.
Effect
28 days compression strength 468kgf(45.9MPa of clean slurry package aggregate concrete), 28 days compression strength 366kgf(35.9MPa of common stirring technique concrete), compression strength improves 28%.
Claims (5)
1, a kind of manufacture method of cement concrete is characterized in that earlier cement, part water or cement, part water and water reducer being stirred into clean slurry, adds thick, fine aggregate then and stirs into compound, adds remaining water at last and stirs into concrete mixture.
2, manufacture method according to claim 1, its feature is 0.25～0.40 at the ratio of mud of clean slurry.
3, according to claim 1,2 described manufacture methods, it is characterized in that described water reducer is ordinary water-reducing agent or high efficiency water reducing agent, or common and efficient compound water reducer.
4, manufacture method according to claim 1 is characterized in that said coarse aggregate is natural aggregate or artificial light aggregate.
5, manufacture method according to claim 1 is characterized in that coarse aggregate and common time of stirring of clean slurry are 1～3 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87106271.2A CN1004540B (en) | 1987-09-17 | 1987-09-17 | Process for coating aggregate concrete with clear paste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87106271.2A CN1004540B (en) | 1987-09-17 | 1987-09-17 | Process for coating aggregate concrete with clear paste |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1031962A true CN1031962A (en) | 1989-03-29 |
| CN1004540B CN1004540B (en) | 1989-06-21 |
Family
ID=4815641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN87106271.2A Expired CN1004540B (en) | 1987-09-17 | 1987-09-17 | Process for coating aggregate concrete with clear paste |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1004540B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100556640C (en) * | 2005-12-31 | 2009-11-04 | 浙江工业大学 | A kind of preparation method of concrete mixed with addition and aggregate |
| CN106827233A (en) * | 2016-08-28 | 2017-06-13 | 郑州赛斯工业技术转化研究院有限公司 | A kind of premixing thick slurry process for improving construction refuse regenerated aggregate concrete performance |
| CN111978031A (en) * | 2020-09-10 | 2020-11-24 | 冯学智 | Method for improving concrete strength |
| CN112608103A (en) * | 2020-12-18 | 2021-04-06 | 福建宏盛建设集团有限公司 | High-strength concrete for building construction |
| CN112876169A (en) * | 2021-02-24 | 2021-06-01 | 辽宁壹立方砂业有限责任公司 | Slurry coating composition, slurry coating aggregate and preparation method thereof |
| CN114262191A (en) * | 2021-12-29 | 2022-04-01 | 华润水泥技术研发有限公司 | Roadbed water stabilization layer using tungsten tailings as main raw material |
-
1987
- 1987-09-17 CN CN87106271.2A patent/CN1004540B/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100556640C (en) * | 2005-12-31 | 2009-11-04 | 浙江工业大学 | A kind of preparation method of concrete mixed with addition and aggregate |
| CN106827233A (en) * | 2016-08-28 | 2017-06-13 | 郑州赛斯工业技术转化研究院有限公司 | A kind of premixing thick slurry process for improving construction refuse regenerated aggregate concrete performance |
| CN111978031A (en) * | 2020-09-10 | 2020-11-24 | 冯学智 | Method for improving concrete strength |
| CN112608103A (en) * | 2020-12-18 | 2021-04-06 | 福建宏盛建设集团有限公司 | High-strength concrete for building construction |
| CN112876169A (en) * | 2021-02-24 | 2021-06-01 | 辽宁壹立方砂业有限责任公司 | Slurry coating composition, slurry coating aggregate and preparation method thereof |
| CN114262191A (en) * | 2021-12-29 | 2022-04-01 | 华润水泥技术研发有限公司 | Roadbed water stabilization layer using tungsten tailings as main raw material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1004540B (en) | 1989-06-21 |
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