CN104478341A - Low-alkali concrete - Google Patents
Low-alkali concrete Download PDFInfo
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- CN104478341A CN104478341A CN201410807301.5A CN201410807301A CN104478341A CN 104478341 A CN104478341 A CN 104478341A CN 201410807301 A CN201410807301 A CN 201410807301A CN 104478341 A CN104478341 A CN 104478341A
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Abstract
The invention discloses low-alkali concrete which comprises components in parts by weight as follows: 100 parts of cement, 50-60 parts of water, 150-250 parts of sand and 5-8 parts of a concrete modifier, wherein the concrete modifier comprises components in parts by weight as follows: 5-15 parts of calcium powder, 1-5 parts of calcium lignosulphonate powder, 4-8 parts of silicon dioxide powder, 2-6 parts of dispersible emulsion powder and 20-40 parts of coal ash powder. The concrete modifier is added to the low-alkali concrete, so that the low-alkali concrete has high bonding capacity and excellent antifreeze and anti-erosion capacity and can be widely applied to northern cold regions and saline-alkali regions.
Description
Technical field
The present invention relates to building material field, particularly relate to a kind of low-alkali concrete.
Background technology
Concrete, referred to as " concrete (t ó ng) ": refer to the general designation being cemented to overall engineered composite material by gelling material by gathering materials.Usually concrete one word said refers to makes gelling material with cement, and sand, masonry gather materials; Coordinate by a certain percentage with water (can contain admixture and adulterant), the cement concrete obtained through stirring, also claims normal concrete, and it is widely used in civil engineering work.
In north cold area and salinization area, because of bad environments, the freeze injury of concrete structure destroys, crack can be produced and peel off, the erosion of salinization is also all comparatively serious in addition, thus can cause the seepage, cracking etc. of concrete works, reduces its weather resistance and security.And normal concrete to obtain strength grade lower, frost resistance and corrosion resistance poor, thus need a kind of freeze proof and concrete that corrosion resistance is strong badly.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of low-alkali concrete, adds concrete modifying agent, and make its binding ability strong, freeze proof corrosion resistance is good.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of low-alkali concrete, comprise following weight proportion component:
Cement 100 parts
50 ~ 60 parts, water
150 ~ 250 parts, sand
Concrete modifying agent 5 ~ 8 parts;
Described concrete modifying agent comprises following weight proportion component:
Calcium powder 5 ~ 15 parts
Lignosulfonic acid calcium powder 1 ~ 5 part
Silicon dioxide powder 4 ~ 8 parts
Dispersed latex powder 2 ~ 6 parts
Coal ash powder 20 ~ 40 parts.
In a preferred embodiment of the present invention, described concrete modifying agent comprises following weight proportion component:
Calcium powder 8 parts
Lignosulfonic acid calcium powder 3 parts
Silicon dioxide powder 5 parts
Dispersed latex powder 4 parts
Coal ash powder 25 parts.
In a preferred embodiment of the present invention, the film-forming temperature of described dispersed latex powder is more than or equal to 0 DEG C.
In a preferred embodiment of the present invention, described silicon dioxide powder is nano-silica powder.
In a preferred embodiment of the present invention, described cement is low alkali portland cement.
The invention has the beneficial effects as follows: low-alkali concrete of the present invention, adds concrete modifying agent, make its binding ability strong, freeze proof corrosion resistance is good, can be widely used in north cold area and salinization area.
Embodiment
Below preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
Embodiment 1
Make concrete modifying agent: take following component according to following weight proportion: calcium powder, 8 parts; Lignosulfonic acid calcium powder, 3 parts; Silicon dioxide powder, 5 parts; Dispersed latex powder, 4 parts; Coal ash powder; 25 parts.The above-mentioned component taken is mixed, forms concrete modifying agent sample one.
Make concrete: take following component according to following weight proportioning: silicate cement 100 parts, 80 parts, sand, rubble 150 parts, 50 parts, water, one 5 parts, concrete modifying agent sample.Added by the concrete modifying agent sample one taken in 1/2 water taken to stir and form mixing solutions, the silicate cement then will taken in 5 seconds, sand adds in concrete mixer together with mixing solutions, and stir 15 seconds, stirring velocity is 30 revs/min; Finally add the rubble and remaining water that take, stir 20 seconds, stirring velocity is 30 revs/min, forms concrete mixture.
Cast test specimen: with above-mentioned concrete mixture casting test specimen one.
Embodiment 2
Make concrete modifying agent: take following component according to following weight proportion: calcium powder, 10 parts; Lignosulfonic acid calcium powder, 2 parts; Silicon dioxide powder, 6 parts; Dispersed latex powder, 5 parts; Coal ash powder; 35 parts.The above-mentioned component taken is mixed, forms concrete modifying agent sample two.
Make concrete: take following component according to following weight proportioning: low alkali portland cement 100 parts, 100 parts, sand, rubble 180 parts, 60 parts, water, 26 parts, concrete modifying agent sample.Added by the concrete modifying agent sample one taken in 2/3 water taken to stir and form mixing solutions, the silicate cement then will taken in 5 seconds, sand adds in concrete mixer together with mixing solutions, and stir 15 seconds, stirring velocity is 35 revs/min; Finally add the rubble and remaining water that take, stir 20 seconds, stirring velocity is 35 revs/min, forms concrete mixture.
Cast test specimen: with above-mentioned concrete mixture casting test specimen two.
Carry out freezing and thawing test to above-mentioned test specimen one and test specimen two, sulphate attack is tested, and freezing tolerance and corrosion resistance improve 3 ~ 5 times.
Low-alkali concrete of the present invention, adds concrete modifying agent, and make its binding ability strong, freeze proof corrosion resistance is good, can be widely used in north cold area and salinization area.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (5)
1. a low-alkali concrete, is characterized in that, comprises following weight proportion component:
Cement 100 parts
50 ~ 60 parts, water
150 ~ 250 parts, sand
Concrete modifying agent 5 ~ 8 parts;
Described concrete modifying agent comprises following weight proportion component:
Calcium powder 5 ~ 15 parts
Lignosulfonic acid calcium powder 1 ~ 5 part
Silicon dioxide powder 4 ~ 8 parts
Dispersed latex powder 2 ~ 6 parts
Coal ash powder 20 ~ 40 parts.
2. low-alkali concrete according to claim 1, is characterized in that, described concrete modifying agent comprises following weight proportion component:
Calcium powder 8 parts
Lignosulfonic acid calcium powder 3 parts
Silicon dioxide powder 5 parts
Dispersed latex powder 4 parts
Coal ash powder 25 parts.
3. low-alkali concrete according to claim 1, is characterized in that, the film-forming temperature of described dispersed latex powder is more than or equal to 0 DEG C.
4. low-alkali concrete according to claim 1, is characterized in that, described silicon dioxide powder is nano-silica powder.
5. low-alkali concrete according to claim 1, is characterized in that, described cement is low alkali portland cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410807301.5A CN104478341A (en) | 2014-12-23 | 2014-12-23 | Low-alkali concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410807301.5A CN104478341A (en) | 2014-12-23 | 2014-12-23 | Low-alkali concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104478341A true CN104478341A (en) | 2015-04-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410807301.5A Pending CN104478341A (en) | 2014-12-23 | 2014-12-23 | Low-alkali concrete |
Country Status (1)
| Country | Link |
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| CN (1) | CN104478341A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105110683A (en) * | 2015-08-31 | 2015-12-02 | 广西路佳道桥勘察设计有限公司 | Concrete and efficient modifier thereof |
| CN105110684A (en) * | 2015-08-31 | 2015-12-02 | 广西路佳道桥勘察设计有限公司 | Concrete and modifier thereof |
| CN105152566A (en) * | 2015-08-27 | 2015-12-16 | 广西路佳道桥勘察设计有限公司 | Concrete and concrete additive thereof |
| CN105174780A (en) * | 2015-08-31 | 2015-12-23 | 广西路佳道桥勘察设计有限公司 | Concrete additive and concrete thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1850707A (en) * | 2006-05-11 | 2006-10-25 | 同济大学 | Self-compacted concrete of resisting erosion of sulfate and its preparing method |
| CN1296308C (en) * | 2003-11-28 | 2007-01-24 | 西北农林科技大学 | Nanometer based concrete modifier |
| CN101759409A (en) * | 2009-12-24 | 2010-06-30 | 四川省富侨工业有限公司 | Anti-freezing concrete |
| CN102320774A (en) * | 2011-07-19 | 2012-01-18 | 孙建志 | Anticorrosive, antirust, anti-seepage and anti-cracking composite additive special for concrete |
| CN102863174A (en) * | 2012-09-08 | 2013-01-09 | 王桂明 | Cement concrete corrosion inhibitor |
-
2014
- 2014-12-23 CN CN201410807301.5A patent/CN104478341A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1296308C (en) * | 2003-11-28 | 2007-01-24 | 西北农林科技大学 | Nanometer based concrete modifier |
| CN1850707A (en) * | 2006-05-11 | 2006-10-25 | 同济大学 | Self-compacted concrete of resisting erosion of sulfate and its preparing method |
| CN101759409A (en) * | 2009-12-24 | 2010-06-30 | 四川省富侨工业有限公司 | Anti-freezing concrete |
| CN102320774A (en) * | 2011-07-19 | 2012-01-18 | 孙建志 | Anticorrosive, antirust, anti-seepage and anti-cracking composite additive special for concrete |
| CN102863174A (en) * | 2012-09-08 | 2013-01-09 | 王桂明 | Cement concrete corrosion inhibitor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105152566A (en) * | 2015-08-27 | 2015-12-16 | 广西路佳道桥勘察设计有限公司 | Concrete and concrete additive thereof |
| CN105110683A (en) * | 2015-08-31 | 2015-12-02 | 广西路佳道桥勘察设计有限公司 | Concrete and efficient modifier thereof |
| CN105110684A (en) * | 2015-08-31 | 2015-12-02 | 广西路佳道桥勘察设计有限公司 | Concrete and modifier thereof |
| CN105174780A (en) * | 2015-08-31 | 2015-12-23 | 广西路佳道桥勘察设计有限公司 | Concrete additive and concrete thereof |
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Application publication date: 20150401 |
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