CN1098077A - A kind of underwater concrete - Google Patents
A kind of underwater concrete Download PDFInfo
- Publication number
- CN1098077A CN1098077A CN 92104820 CN92104820A CN1098077A CN 1098077 A CN1098077 A CN 1098077A CN 92104820 CN92104820 CN 92104820 CN 92104820 A CN92104820 A CN 92104820A CN 1098077 A CN1098077 A CN 1098077A
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- CN
- China
- Prior art keywords
- consumption
- agent
- cement
- underwater
- fdn
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/74—Underwater applications
Abstract
A kind of underwater concrete that is used for underwater construction and is made up of cement, sand, stone is characterized in that it is by anti-dispersant, liquid agent, and air entrapment agent, silica flour or highly efficient intensifying agent are formed.During its advantage was to construct under water, its was met water and is not disperseed, and did not emanate, the intensity height, guaranteed the underwater project construction quality.
Description
The present invention relates to concrete field, particularly the concrete field of underwater construction.
Along with industrial expansion, the expansion of exploitation scale, land, ocean petroleum engineering, bridge pile foundation plinth engineering, the flood control engineering does not have the construction joint engineering as big area under water, the levelling of underwater foundation, filling, must be in water from the jackstone grouting works of the pouring that fall, anticorrosion, the shore protection of submerged structure, back cover, sea wall bridge rescue and relief work engineering and forbid that underwater engineering such as polluted water have all proposed under water the not concrete requirement of drainage construction.Yet normal concrete is met water electrode and is easily disperseed, emanates, and concrete grating changes, and cement runs off, and causes concrete strength to reduce, and can't adapt under water the not concrete requirement of drainage construction.
Purpose of the present invention just is to overcome the weak point of above-mentioned portland cement concrete, and a kind of adaptation drainage construction not under water is provided, and does not disperse, and does not emanate levelling and closely knit voluntarily, the underwater concrete that intensity is high.
For achieving the above object, the present invention's design is: 1. in order to guarantee that concrete chance water does not disperse, the present invention that do not emanate adopts anti-dispersant, utilize its surfactivity effect, change particulate surface potential in the concrete coarse dispersion system, reduced the repulsion potential energy between the particle significantly, increased the potential energy that attracts between particle, make heterogeneous coarse dispersion agglomerated together, play not dispersive effect of thickening.Intermolecular electric screen resilience makes the polymer diffusion of anti-dispersant, gives its viscosity and good flowability is arranged.In addition, anti-dispersant is formed the macromolecular compound that contains long bond structure, and it is adsorbed onto cement granules on the molecular chain in cement fine particle system, forms stable reticulated structure.The result of above-mentioned effect shows as the intensive cohesion on macroscopic view, guaranteed that concrete does not disperse, and does not emanate.2. add the heavy-gravity concrete that becomes behind the anti-dispersant and increase mobile, workability and reduction mixing water for making, improve intensity, the present invention adopts liquid agent.It has the intensive dissemination to the cement particle, can significantly improve concrete flowability and workability, improves concrete workability.Reduce concrete mixing water, reduce water cement ratio.Improve the intensity of underwater concrete.3. in order to improve concrete coherency, workability and pouring quality, the present invention adopts air entrapment agent.4. for the intensity that makes underwater concrete significantly improves, enlarge its use range, the present invention adopts silica flour or highly efficient intensifying agent.
Detailed structure of the present invention is as follows: it is made up of cement, sand, stone and following material, its consumption of anti-dispersant is 0.8～2.8%, its consumption of liquid agent is 0.8～2%, air entrapment agent 2～5/0,000, its consumption of silica flour or highly efficient intensifying agent is 5～12%, and said percentage ratio is by mass of cement per-cent.Wherein cement, sand, stone weight ratio are 1: 1.68～2.25: 2.1～3.11.Described anti-dispersant is that VWB-1 flocculation agent consumption is 1.8～2.8%, and polyacrylamide TJBS consumption is 0.6～1.2%.Described liquid agent is FDN, FDN-5, and FDN-1000, FDN-500, FDN-2000, its consumption is 0.8～2%.Described air entrapment agent is a SJ-1 type air entrapment agent, and its consumption of 6501 tensio-active agents is 2～5/0,000.
Of the present invention mixing and stirring adopted promptly preceding addition of two kinds of methods and back addition.Preceding addition is that anti-dispersant is mixed uniform mixing together in company with cement, sand, stone, treats to add entry again after five minutes, and liquid agent, air entrapment agent mix and stir into underwater concrete.Back addition is after cement, sand, stone and water are mixed and stirred, to add anti-dispersant again, liquid agent, and air entrapment agent mixes and stirs into underwater concrete.
Embodiment 1
Embodiment 2
Embodiment 3
Embodiment 4
Use the present invention only to increase by 1/5 than the expense of normal concrete, and the good engineering quality when the construction underwater engineering, this is that normal concrete can't be by comparison.As use normal concrete construction bridges drilled pile, 12% broken pile rate is arranged approximately, and use the bridge drilling stake of the present invention's construction can avoid broken pile.Superiority of the present invention is that also the occasion that normal concrete can't be constructed in some underwater engineering (as the naval port, big area jackstone grouting works, large-area thin plate construction under water, flood-fighting disaster relief engineering etc.) can be substituted by it, and the construction quality height.
Claims (5)
1, a kind of underwater concrete that is used for underwater construction and forms by cement, sand, stone, it is characterized in that it is made up of following material, its consumption of anti-dispersant is 0.8～2.8%, its consumption of liquid agent is 0.8～2%, air entrapment agent 2～5/0,000, its consumption of silica flour or highly efficient intensifying agent is 5～12%, and said percentage ratio is the per-cent of by mass of cement.
2, underwater concrete according to claim 1 is characterized in that cement, sand, stone weight ratio are 1: 1.68～2.25: 2.1～3.11.
3, underwater concrete according to claim 1 is characterized in that described anti-dispersant is that VWB-1 flocculation agent consumption is 1.8～2.8%, and polyacrylamide TJBS consumption is 0.6～1.2%, and said percentage ratio is the per-cent of by mass of cement.
4, underwater concrete according to claim 1 is characterized in that described liquid agent is FDN, FDN-5, and FDN-1000, FDN-500, FDN-2000, its consumption is 0.8～2%, and said percentage ratio is the per-cent of by mass of cement.
5, underwater concrete according to claim 1 is characterized in that described air entrapment agent is SJ-1 type air entrapment agent or 6501 tensio-active agents, and its consumption is 1-5/ ten thousand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92104820 CN1098077A (en) | 1992-06-30 | 1992-06-30 | A kind of underwater concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92104820 CN1098077A (en) | 1992-06-30 | 1992-06-30 | A kind of underwater concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1098077A true CN1098077A (en) | 1995-02-01 |
Family
ID=4941015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92104820 Pending CN1098077A (en) | 1992-06-30 | 1992-06-30 | A kind of underwater concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1098077A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104529314A (en) * | 2015-01-23 | 2015-04-22 | 甘肃煤炭第一工程有限责任公司 | Concrete composition capable of being poured under deep water and pouring method of concrete composition |
| CN106746868A (en) * | 2015-11-20 | 2017-05-31 | 衡阳市银利实业有限公司 | A kind of agent on crack resistance of concrete dispersant |
| CN111153644A (en) * | 2019-12-27 | 2020-05-15 | 哈尔滨理工大学 | High-performance concrete for repairing underwater concrete cracks, preparation method thereof and method for repairing cracks by using high-performance concrete |
-
1992
- 1992-06-30 CN CN 92104820 patent/CN1098077A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104529314A (en) * | 2015-01-23 | 2015-04-22 | 甘肃煤炭第一工程有限责任公司 | Concrete composition capable of being poured under deep water and pouring method of concrete composition |
| CN106746868A (en) * | 2015-11-20 | 2017-05-31 | 衡阳市银利实业有限公司 | A kind of agent on crack resistance of concrete dispersant |
| CN111153644A (en) * | 2019-12-27 | 2020-05-15 | 哈尔滨理工大学 | High-performance concrete for repairing underwater concrete cracks, preparation method thereof and method for repairing cracks by using high-performance concrete |
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| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |