CN102731037A - Concrete cushion block - Google Patents
Concrete cushion block Download PDFInfo
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- CN102731037A CN102731037A CN2012102516773A CN201210251677A CN102731037A CN 102731037 A CN102731037 A CN 102731037A CN 2012102516773 A CN2012102516773 A CN 2012102516773A CN 201210251677 A CN201210251677 A CN 201210251677A CN 102731037 A CN102731037 A CN 102731037A
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- concrete
- cushion block
- butadiene latex
- carboxylic styrene
- pad
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Abstract
The invention discloses a concrete cushion block which is formed by pressing concrete. The concrete per cubic meter comprises the raw materials by weight: 470-520Kg cement, 510-550Kg sand, 1050-1250Kg stone, 180-210Kg water and 300-400Kg carboxylic styrene-butadiene latex. 12-14% of the carboxylic styrene-butadiene latex is doped in concrete as concrete modifier, thus improving the fluidity and plasticity of the concrete and effectively reducing fracturing rate of the cushion block in pressing process of the concrete cushion block; and the prepared concrete cushion block has higher compressive strength and bending strength as the carboxylic styrene-butadiene latex has higher binding force and film forming strength.
Description
Technical field
The invention belongs to building operation articles for use field, particularly a kind of concrete pad.
Background technology
In building operation, in order to strengthen the intensity of concrete structure, before casting concrete, make the skeleton of assembling reinforcement in advance, and then carry out concrete building usually as concrete structure, Framework Of Steel Reinforcement is coated in the concrete structure.In construction,, generally be at the prefabricated plain concrete cushion block of steel bar stress outside colligation, and the intensity of plain concrete cushion block generally can't reach C30 for the concrete thickness of the resist that guarantees Framework Of Steel Reinforcement.The ratio of reinforcement is usually than higher in the large box girder of the large foundation of Industrial buildings and bridge construction; If bottom reinforcement bars supports with common plain concrete cushion block; Cushion block is with regard to crushed situation after occurring reinforcing bar firmware colligation well easily; Rethink and just lift very difficulty to Framework Of Steel Reinforcement, so require concrete pad that high compression strength and buckling strength are arranged; Simultaneously, in the production of concrete pad, adopt common plain concrete compacting cushion block, the pressure break ratio is especially up to about 60%, serious increase construction cost.So need the concrete pad that a kind of certificate has higher-strength, bigger bend resistance intensity at present badly, and in process of production, have low pressure break ratio.
Summary of the invention
It is low to the objective of the invention is to overcome in the prior art the existing ultimate compression strength of concrete pad and buckling strength; And the high deficiency of pressure rate in process of production; Provide a kind of certificate that advantages of higher compressive strength and bend resistance intensity are arranged; And the concrete pad that has in process of production, low pressure break ratio.
In order to realize the foregoing invention purpose, the invention provides following technical scheme:
A kind of concrete pad is formed by the concrete compacting, and the component of each cubic meter of concrete comprises: cement 470～520Kg, sand 510～550Kg, stone 1050～1250Kg, water 180～210Kg, carboxylic styrene butadiene latex 300～400Kg.In conventional concrete, mix 12～14% carboxylic styrene butadiene latex; With carboxylic styrene butadiene latex as concrete properties-correcting agent; Under simple operation, obtain modified concrete; Improve concrete flowability and plasticity-, effectively reduced the pressure break rate of cushion block in pressed concrete cushion block process; And, make the concrete pad of processing have high compression strength and bend resistance intensity because carboxylic styrene butadiene latex has higher cohesive force and conjunctiva intensity.
Further, the component of each cubic meter of concrete comprises: cement 490～500Kg, sand 510～520Kg, stone 1150～1200Kg, water 200～210Kg, carboxylic styrene butadiene latex 330～350Kg.
Further, the component of each cubic meter of concrete comprises: cement 500Kg, sand 542Kg, stone 1150Kg, water 205Kg, carboxylic styrene butadiene latex 360Kg.
Further, in the said concrete, the particle diameter of said stone is 5～10mm.
Further, the particle diameter of said stone is 7mm.
Concrete pad is formed by the concrete compacting, is one of necessary means of protection Framework Of Steel Reinforcement.And the pressure break ratio of existing concrete cushion block is up to about 60%, and available coagulation soil cushion block can not satisfy Industrial buildings large foundation and the construction of bridge construction large box girder to the ultimate compression strength of cushion block and the requirement of buckling strength.
The present invention mixes carboxylic styrene butadiene latex in concrete, and regulates the proportioning of each component in the conventional concrete, this concrete is suppressed the concrete pad that is improved.Carboxylic styrene butadiene latex is to add a small amount of carboxylic acid and other auxiliary agent with divinyl, vinylbenzene; Multipolymer through letex polymerization generates has higher cohesive force and conjunctiva intensity, and machinery and chemicalstability are good; Advantage such as mobile, that package stability is all good, and loading level is big.In concrete, add carboxylic styrene butadiene latex, when the carboxy styrene-butadiene rubber milk content that adds greater than 12% the time, the ultimate compression strength of the concrete pad that compacting obtains and buckling strength increase thereupon along with the increase of carboxylic styrene butadiene latex; But the contriver finds, when the carboxylic styrene butadiene latex that adds in the concrete greater than 14% the time, concrete ultimate compression strength begins to weaken.That is to say that the carboxy styrene-butadiene rubber milk content that adds in the concrete can guarantee that concrete has good ultimate compression strength and bend resistance intensity between 12～14% the time.The present invention as concrete properties-correcting agent, obtains modified concrete with carboxylic styrene butadiene latex under simple operation, improved concrete flowability and plasticity-, has effectively reduced the pressure break rate of cushion block in pressed concrete cushion block process; And, make the concrete pad of processing have high compression strength and bend resistance intensity because carboxylic styrene butadiene latex has higher cohesive force and conjunctiva intensity.
Compared with prior art, beneficial effect of the present invention:
1, effectively reduced the pressure break rate of cushion block in pressed concrete cushion block process, the present invention is in the process of preparation concrete pad, and the pressure break rate can be controlled in 0.8～1%;
2, the concrete pad of processing has high compression strength and bend resistance intensity; The ultimate compression strength of concrete pad of the present invention is 44～49MPa, and bend resistance intensity is 9.4～12.9MPa.
Embodiment
Below in conjunction with Test Example and embodiment the present invention is made further detailed description.But should this be interpreted as that the scope of the above-mentioned theme of the present invention only limits to following embodiment, allly all belong to scope of the present invention based on the technology that content of the present invention realized.
Embodiment 1:
The concrete pad that present embodiment is enumerated is formed by the compacting of the concrete of strength grade C30, and the component of each cubic meter of concrete comprises: cement 490Kg, sand 510Kg, stone 1150Kg, carboxylic styrene butadiene latex 330Kg, water 200Kg.With cement, sand, stone, carboxylic styrene butadiene latex, dry mixing and even; And then add entry and stir; The concrete that obtains is put into the concrete pad forming machine suppress the concrete pad that obtains 70.7mm * 70.7mm * 70.7mm (length * wide * height) and 50mm * 50mm * 550mm (length * wide * height), the concrete that obtains is carried out compressive strength test and bend resistance strength trial.Performance perameter and the pressure break rate in the pressed concrete cushion block process that present embodiment is suppressed the concrete pad that obtains write down like following table 1:
Table 1
Embodiment 2:
The concrete pad that present embodiment is enumerated; Concrete compacting by strength grade C30 forms, and the component of each cubic meter of concrete comprises: cement 500Kg, sand 520Kg; Stone 1200Kg; Carboxylic styrene butadiene latex 350Kg dry mixing with evenly, and then add entry 210Kg and stir, the concrete that obtains is put into the concrete pad forming machine suppresses the concrete pad that obtains 70.7mm * 70.7mm * 70.7mm (length * wide * height) and 50mm * 50mm * 550mm (length * wide * height); The concrete that obtains is carried out compressive strength test and bend resistance strength trial, experimental data is write down like following table 2 together with the pressure break rate in the pressed concrete cushion block process:
Table 2
Embodiment 3
The concrete pad that present embodiment is enumerated; Concrete compacting by strength grade C30 forms, and the component of each cubic meter of concrete comprises: cement 500Kg, sand 542Kg; Stone 1150Kg; Carboxylic styrene butadiene latex 360Kg dry mixing with evenly, and then add entry 210Kg and stir, the concrete that obtains is put into the concrete pad forming machine suppresses the concrete pad that obtains 70.7mm * 70.7mm * 70.7mm (length * wide * height) and 50mm * 50mm * 550mm (length * wide * height); The concrete that obtains is carried out compressive strength test and bend resistance strength trial, experimental data is write down like following table 3 together with the pressure break rate in the pressed concrete cushion block process:
Table 3
Comparative Examples 1:
The concrete pad that this Comparative Examples is enumerated; Concrete compacting by strength grade C30 forms; The component of each cubic meter of concrete comprises: cement 500Kg, and sand 542Kg, stone 1150Kg dry mixing is with even; And then add entry 210Kg and stir; The concrete that obtains is put into the concrete pad forming machine suppresses the concrete pad that obtains 70.7mm * 70.7mm * 70.7mm (length * wide * height) and 50mm * 50mm * 550mm (length * wide * height), the concrete that obtains is carried out compressive strength test and bend resistance strength trial, experimental data is write down like following table 4 together with the pressure break rate in the pressed concrete cushion block process:
Table 4
Comparative Examples 2:
The concrete pad that this Comparative Examples is enumerated; Concrete compacting by strength grade C30 forms, and the component of each cubic meter of concrete comprises: cement 500Kg, sand 542Kg; Stone 1150Kg; Carboxylic styrene butadiene latex 400Kg dry mixing with evenly, and then add entry 210Kg and stir, the concrete that obtains is put into the concrete pad forming machine suppresses the concrete pad that obtains 70.7mm * 70.7mm * 70.7mm (length * wide * height) and 50mm * 50mm * 550mm (length * wide * height); The concrete that obtains is carried out compressive strength test and bend resistance strength trial, experimental data is write down like following table 5 together with the pressure break rate in the pressed concrete cushion block process:
Table 5
Contrast table 1～table 5 can be known: in concrete, add the concrete pad that carboxylic styrene butadiene latex makes, effectively reduced the pressure break rate of cushion block in pressed concrete cushion block process; And the concrete pad of processing has high compression strength and bend resistance intensity, when the carboxylic styrene butadiene latex that adds in the concrete greater than 14% the time, concrete ultimate compression strength begins to weaken.
Claims (5)
1. a concrete pad is formed by the concrete compacting, it is characterized in that the component of each cubic meter of concrete comprises: cement 470～520Kg, sand 510～550 Kg, stone 1050～1250 Kg, water 180～210 Kg, carboxylic styrene butadiene latex 300～400Kg.
2. concrete pad as claimed in claim 1 is characterized in that: the component of each cubic meter of concrete comprises: cement 490～500Kg, sand 510～520 Kg, stone 1150～1200 Kg, water 200～210 Kg, carboxylic styrene butadiene latex 330～350Kg.
3. concrete pad as claimed in claim 1 is characterized in that: the component of each cubic meter of concrete comprises: cement 500Kg, sand 542 Kg, stone 1150 Kg, water 205 Kg, carboxylic styrene butadiene latex 360Kg.
4. like any described concrete pad of claim 1～3, it is characterized in that in the said concrete, the particle diameter of said stone is 5～10mm.
5. like any described concrete pad of claim 1～4, it is characterized in that in the said concrete, the particle diameter of said stone is 7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102516773A CN102731037A (en) | 2012-07-20 | 2012-07-20 | Concrete cushion block |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102516773A CN102731037A (en) | 2012-07-20 | 2012-07-20 | Concrete cushion block |
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| CN102731037A true CN102731037A (en) | 2012-10-17 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104072067A (en) * | 2014-07-17 | 2014-10-01 | 桓台县果里镇常沣建材经销处 | Concrete building support component and preparation technology thereof |
| CN104086127A (en) * | 2014-07-17 | 2014-10-08 | 桓台县果里镇常沣建材经销处 | Concrete cushion block and preparation technology thereof |
| CN107200522A (en) * | 2017-07-05 | 2017-09-26 | 汤始建华建材（苏州）有限公司 | A kind of new flexible concrete |
| CN108298917A (en) * | 2018-04-08 | 2018-07-20 | 福建工程学院 | Comprehensively utilize the pumping regeneration concrete and preparation method of solid waste |
| CN108424076A (en) * | 2018-04-08 | 2018-08-21 | 福建工程学院 | Comprehensively utilize the high-strength concrete and preparation method of solid waste |
| CN111285644A (en) * | 2018-12-06 | 2020-06-16 | 中国建筑第八工程局有限公司 | High-strength radiation-proof concrete protective layer cushion block material |
| CN111978034A (en) * | 2020-07-02 | 2020-11-24 | 江苏省建筑工程质量检测中心有限公司 | Anti-permeation high-strength high-volume-stability concrete, preparation method thereof and application of concrete as cushion block for protective layer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101172820A (en) * | 2007-10-25 | 2008-05-07 | 武汉理工大学 | Method for producing high-strength high damping concrete |
| CN102464471A (en) * | 2010-11-10 | 2012-05-23 | 淄博高新区石桥鸿兴混凝土制品加工厂 | High-strength concrete cushion block |
-
2012
- 2012-07-20 CN CN2012102516773A patent/CN102731037A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101172820A (en) * | 2007-10-25 | 2008-05-07 | 武汉理工大学 | Method for producing high-strength high damping concrete |
| CN102464471A (en) * | 2010-11-10 | 2012-05-23 | 淄博高新区石桥鸿兴混凝土制品加工厂 | High-strength concrete cushion block |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104072067A (en) * | 2014-07-17 | 2014-10-01 | 桓台县果里镇常沣建材经销处 | Concrete building support component and preparation technology thereof |
| CN104086127A (en) * | 2014-07-17 | 2014-10-08 | 桓台县果里镇常沣建材经销处 | Concrete cushion block and preparation technology thereof |
| CN107200522A (en) * | 2017-07-05 | 2017-09-26 | 汤始建华建材（苏州）有限公司 | A kind of new flexible concrete |
| CN108298917A (en) * | 2018-04-08 | 2018-07-20 | 福建工程学院 | Comprehensively utilize the pumping regeneration concrete and preparation method of solid waste |
| CN108424076A (en) * | 2018-04-08 | 2018-08-21 | 福建工程学院 | Comprehensively utilize the high-strength concrete and preparation method of solid waste |
| CN111285644A (en) * | 2018-12-06 | 2020-06-16 | 中国建筑第八工程局有限公司 | High-strength radiation-proof concrete protective layer cushion block material |
| CN111978034A (en) * | 2020-07-02 | 2020-11-24 | 江苏省建筑工程质量检测中心有限公司 | Anti-permeation high-strength high-volume-stability concrete, preparation method thereof and application of concrete as cushion block for protective layer |
| CN111978034B (en) * | 2020-07-02 | 2022-05-31 | 江苏省建筑工程质量检测中心有限公司 | Anti-permeation high-strength high-volume-stability concrete, preparation method thereof and application of concrete as cushion block for protective layer |
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Application publication date: 20121017 |