CN103171021A - Method for enhancing concrete strength, improving volume stability and reducing cracking - Google Patents
Method for enhancing concrete strength, improving volume stability and reducing cracking Download PDFInfo
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- CN103171021A CN103171021A CN2011104379386A CN201110437938A CN103171021A CN 103171021 A CN103171021 A CN 103171021A CN 2011104379386 A CN2011104379386 A CN 2011104379386A CN 201110437938 A CN201110437938 A CN 201110437938A CN 103171021 A CN103171021 A CN 103171021A
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Abstract
The invention discloses a method for enhancing concrete strength, improving volume stability and reducing cracking. In the process of concrete forming, an upper layer slurry body is removed or drawn from an upper layer of concrete, solidity of the concrete is enhanced, hydration heat is reduced, the volume stability is improved, cracking phenomena are reduced to the greatest extent and endurance quality of the concrete is improved. According to the method, a formula of the concrete is not changed, existing concrete is used, only the upper layer slurry body is removed and the removed slurry body can be recycled and reused. The method is simple, effective, low in cost, energy-saving, environment-friendly and capable of being used for construction of the existing concrete conveniently.
Description
Technical field
The present invention relates to the concrete construction technology field, particularly relate to and a kind ofly improve concrete strength, improve volume stability, reduce the method for cracking.
Background technology
In daily construction, in order to guarantee concrete intensity and operating characteristics, usually need to improve the consumption of Binder Materials when concrete batching.But the use of more Binder Materials easily causes excessive, the easy generation cracking of concrete early water heat-transmission, thereby affect concrete intensity and durability, especially mass concrete, above problem is particularly evident, or even causes that construction quality is defective, the main cause of Important Project accident.The direct engineering accident and the endurance issues that are caused by cracking at present account for more than 80% of whole concrete problem.At present, problem of Cracking remains that concrete is unavoidable, a global difficult problem.
Summary of the invention
Technical problem to be solved by this invention is easily cracking the and affect problem of concrete strength and durability of existing concrete, provides a kind of and simply, effectively improves concrete strength, improves volume stability, reduces the method that ftractures.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme:
The present invention improves concrete strength, improves volume stability, reduces the method for cracking: in the concrete formation process, the upper strata slurry is drained or taken out from the concrete upper strata.
Further, above-mentioned raising concrete strength, improve volume stability, reduce in the method for cracking, drain or the slurry taken out is no more than 50% of all paste materials.
Preferably, the aforementioned slurry of draining or taking out is the 10-50% of all paste materials.
Best, the aforementioned slurry of draining or taking out is 50% of all paste materials.
Drain in technique scheme or take out slurry and can adopt and stay some concrete mortar outlets in the above or realize with the method that plant equipment is taken out slurry when making template, also can directly discharge at the template upper brim.
Concrete has been pumped into the constructing operation face and through after fully vibrating, because the proportion of sand, stone, paste materials is different, heavier sandstone is sunken to concrete lower floor, and paste materials floats on the concrete upper strata, and blocked up laitance is unfavorable for improving concrete intensity and easily produces cracking.Utilize the drain too much slurry in upper strata or use plant equipment to take out too much slurry of the discharge gate of template top, can reach and improve the purpose that concrete density reduces the heat of hydration, improve concrete volume stability, reduce to greatest extent cracking, improve concrete endurance quality.
Compared with prior art, the present invention drains the too much paste materials in concrete upper strata, improve concrete density and reduced the heat of hydration, improved concrete volume stability, reduce to greatest extent cracking phenomena, improve concrete endurance quality, the method does not change concrete formula, use existing concrete, the upper strata slurry of only need draining, the slurry of draining can be collected recycling, and the inventive method is simply effective, with low cost and energy-conserving and environment-protective, can be applied to very easily the construction of existing concrete.
Description of drawings
Fig. 1 is the inventive method schematic diagram.
The specific embodiment
As shown in Figure 1, after the concreting moulding is fully vibrated, because the proportion of sand, stone, paste materials is different, heavier sandstone (small stone 2 and boulder 3) is sunken to concrete lower floor, and paste materials 1 floats on the concrete upper strata, the paste materials 1 on concrete upper strata is discharged by the discharge gate 4 on template, and the amount of discharge is the 10-50% of whole paste materials.Can reach and improve the purpose that the concrete density minimizing heat of hydration improves volume stability, reduce to greatest extent cracking, improve concrete endurance quality.
Claims (4)
1. method that improves concrete strength, improves volume stability, reduces cracking is characterized in that: in the concrete formation process, the upper strata slurry is drained or taken out from the concrete upper strata.
According to the described raising concrete strength of claim 1, improve volume stability, reduce the method for cracking, it is characterized in that: drain or the slurry taken out is no more than 50% of all paste materials.
According to the described raising concrete strength of claim 2, improve volume stability, reduce the method for cracking, it is characterized in that: drain or the slurry taken out is the 10-50% of all paste materials.
According to the described raising concrete strength of claim 3, improve volume stability, reduce the method for cracking, it is characterized in that: drain or the slurry taken out is 50% of all paste materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104379386A CN103171021A (en) | 2011-12-23 | 2011-12-23 | Method for enhancing concrete strength, improving volume stability and reducing cracking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104379386A CN103171021A (en) | 2011-12-23 | 2011-12-23 | Method for enhancing concrete strength, improving volume stability and reducing cracking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103171021A true CN103171021A (en) | 2013-06-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104379386A Pending CN103171021A (en) | 2011-12-23 | 2011-12-23 | Method for enhancing concrete strength, improving volume stability and reducing cracking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103171021A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109020353A (en) * | 2018-10-11 | 2018-12-18 | 攀枝花学院 | Concrete laitance recycles the method that preparation is higher than former strength concrete |
| CN109020352A (en) * | 2018-10-11 | 2018-12-18 | 攀枝花学院 | Concrete laitance recycles method of the preparation lower than former strength concrete |
| CN109293289A (en) * | 2018-10-11 | 2019-02-01 | 攀枝花学院 | The method that concrete laitance recycling prepares equality strength concrete |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0643753B2 (en) * | 1987-02-12 | 1994-06-08 | 合資会社八代石油 | Concrete placing method and device |
-
2011
- 2011-12-23 CN CN2011104379386A patent/CN103171021A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0643753B2 (en) * | 1987-02-12 | 1994-06-08 | 合資会社八代石油 | Concrete placing method and device |
Non-Patent Citations (1)
| Title |
|---|
| 李业兰: "《建筑材料》", 30 June 1991, article "建筑材料", pages: 45 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109020353A (en) * | 2018-10-11 | 2018-12-18 | 攀枝花学院 | Concrete laitance recycles the method that preparation is higher than former strength concrete |
| CN109020352A (en) * | 2018-10-11 | 2018-12-18 | 攀枝花学院 | Concrete laitance recycles method of the preparation lower than former strength concrete |
| CN109293289A (en) * | 2018-10-11 | 2019-02-01 | 攀枝花学院 | The method that concrete laitance recycling prepares equality strength concrete |
| CN109020352B (en) * | 2018-10-11 | 2020-07-28 | 攀枝花学院 | Method for preparing concrete with lower strength than original strength by recycling concrete laitance |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130626 |
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| RJ01 | Rejection of invention patent application after publication |