CN104446217A - Highly carbonization-resistant concrete - Google Patents
Highly carbonization-resistant concrete Download PDFInfo
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- CN104446217A CN104446217A CN201410761158.0A CN201410761158A CN104446217A CN 104446217 A CN104446217 A CN 104446217A CN 201410761158 A CN201410761158 A CN 201410761158A CN 104446217 A CN104446217 A CN 104446217A
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Abstract
The invention discloses a highly carbonization-resistant concrete which contains the following raw material components in parts by weight: 100 parts of cement, 15-35 parts of coal ash, 15-40 parts of kaolin, 10-15 parts of slag powder, 10-25 parts of coarse aggregate, 2-10 parts of quartz sand and 1-7 parts of a polycarboxylate superplasticizer. The highly carbonization-resistant concrete disclosed by the invention is low in porosity, high in density and weak in alkalinity, and a high anti-carbonization performance is achieved.
Description
Technical field
The present invention relates to a kind of high anti-carbonation properties concrete, belong to building material field.
Background technology
Concrete, as indispensable in civil engineering work, purposes material of construction the most widely, all causes a large amount of concerns of scientific researchers all the time, particularly in concrete weather resistance, application property, intensity etc., has all carried out large quantifier elimination.Along with the development of concrete technology, improving concrete weather resistance is the important topic that countries in the world Materials science worker constantly studies, explores.The problems such as water quality corrodes, cavitation corrosion is washed away, freeze thawing, infiltration, wearing and tearing, concrete carbonization, steel bar corrosion cause great harm can to the safety of buildings.Concrete is from when building, and be just subject to the destructions such as carbonization, Plant ecology reflection, freeze injury, salt damage, wherein carbonization phenomenon is the most common.After concrete is carbonized, concrete basicity can be reduced, cause the ductility of its structure to reduce.There are some researches show: if concrete hole is less, degree of compactness is higher, alkaline matter content is larger, anti-carbonation properties is better.Concrete carbonization is a kind of chemical corrosion, can start with and carry out study on the modification, comprise water cement ratio, cement consumption and kind, aggregate kind and grating, flyash, admixture etc. from constituent materials aspect.
The kaolinic rich reserves of China, occupy the world the 5th, but be also only nearly decades to its exploitation, current kaolin is widely used in the fields such as coating, papermaking, plastics, rubber, high grade refractory, and the application report of kaolin in concrete is few at present.Twentieth century seventies, Davidovits and his colleague of France use alkali-activated carbonatite metakaolin, form a kind of Novel alkali gelling material, be called Geopolymers, it is a kind of high reactivity pozzolanic material, react with Ca (OH) 2, product and the cement of generation are similar, can use as gelling material; This novel material due to its pozzolanic activity and silicon ash similar, therefore also can as mineral admixture.
Summary of the invention
The technical problem to be solved in the present invention overcomes existing defect, provides a kind of high anti-carbonation properties concrete.
Object of the present invention carrys out specific implementation by the following technical programs:
A kind of high anti-carbonation properties concrete, each feed composition by weight: cement 100 parts, flyash 15-35 part, kaolin 15-40 part, slag powders 10-15 part, coarse aggregate 10-25 part, quartz sand 2-10 part, polycarboxylate water-reducer 1-7 part.
Preferably, above-mentioned high anti-carbonation properties concrete, each feed composition by weight: cement 100 parts, 25 parts, flyash, kaolin 15 parts, slag powders 12 parts, coarse aggregate 15.5 parts, quartz sand 7 parts, polycarboxylate water-reducer 4 parts.
Described coarse aggregate is limestone mine gained breeze after fragmentation.
Beneficial effect of the present invention:
Height anti-carbonation properties concrete pore of the present invention is little, degree of compactness is high, alkalescence is weak, achieves high anti-carbonation properties.
Embodiment
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
embodiment 1:
A kind of high anti-carbonation properties concrete, each feed composition by weight: cement 100 parts, 25 parts, flyash, kaolin 15 parts, slag powders 12 parts, coarse aggregate 15.5 parts, quartz sand 7 parts, polycarboxylate water-reducer 4 parts.Described coarse aggregate is limestone mine gained breeze after fragmentation.
embodiment 2:
A kind of high anti-carbonation properties concrete, each feed composition by weight: cement 100 parts, 15 parts, flyash, kaolin 40 parts, slag powders 10 parts, coarse aggregate 25 parts, quartz sand 2 parts, polycarboxylate water-reducer 7 parts.Described coarse aggregate is limestone mine gained breeze after fragmentation.
embodiment 3:
A kind of high anti-carbonation properties concrete, each feed composition by weight: cement 100 parts, 35 parts, flyash, kaolin 15 parts, slag powders 15 parts, coarse aggregate 10 parts, quartz sand 10 parts, polycarboxylate water-reducer 1 part.Described coarse aggregate is limestone mine gained breeze after fragmentation.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. a high anti-carbonation properties concrete, is characterized in that: each feed composition by weight: cement 100 parts, flyash 15-35 part, kaolin 15-40 part, slag powders 10-15 part, coarse aggregate 10-25 part, quartz sand 2-10 part, polycarboxylate water-reducer 1-7 part.
2. high anti-carbonation properties concrete according to claim 1, is characterized in that: each feed composition by weight: cement 100 parts, 25 parts, flyash, kaolin 15 parts, slag powders 12 parts, coarse aggregate 15.5 parts, quartz sand 7 parts, polycarboxylate water-reducer 4 parts.
3. high anti-carbonation properties concrete according to claim 1 and 2, is characterized in that: described coarse aggregate is limestone mine gained breeze after fragmentation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410761158.0A CN104446217A (en) | 2014-12-12 | 2014-12-12 | Highly carbonization-resistant concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410761158.0A CN104446217A (en) | 2014-12-12 | 2014-12-12 | Highly carbonization-resistant concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104446217A true CN104446217A (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410761158.0A Pending CN104446217A (en) | 2014-12-12 | 2014-12-12 | Highly carbonization-resistant concrete |
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| CN (1) | CN104446217A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107721288A (en) * | 2017-11-14 | 2018-02-23 | 湖州力奥电梯配件有限公司 | A kind of elevator hoistways upper beam structure |
Citations (6)
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|---|---|---|---|---|
| JP2002362962A (en) * | 2001-06-08 | 2002-12-18 | Kubota Corp | Production process of ceramic exterior wall material |
| CN101139190A (en) * | 2007-08-09 | 2008-03-12 | 同济大学 | Self-compacting active powder concrete and method for making same |
| CN101215138A (en) * | 2008-01-04 | 2008-07-09 | 东南大学 | Slag mixed active powder concrete |
| CN101323515A (en) * | 2008-07-18 | 2008-12-17 | 东南大学 | Ultra-high strong concrete having ultra-high pumping performance and method for preparing the same |
| CN101580369A (en) * | 2009-06-19 | 2009-11-18 | 清华大学 | Fiber reinforced high-strength mortar used for concrete structure repair |
| CN102584129A (en) * | 2012-03-02 | 2012-07-18 | 中国建筑股份有限公司 | Dry powder of active powder concrete and use method of dry powder |
-
2014
- 2014-12-12 CN CN201410761158.0A patent/CN104446217A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002362962A (en) * | 2001-06-08 | 2002-12-18 | Kubota Corp | Production process of ceramic exterior wall material |
| CN101139190A (en) * | 2007-08-09 | 2008-03-12 | 同济大学 | Self-compacting active powder concrete and method for making same |
| CN101215138A (en) * | 2008-01-04 | 2008-07-09 | 东南大学 | Slag mixed active powder concrete |
| CN101323515A (en) * | 2008-07-18 | 2008-12-17 | 东南大学 | Ultra-high strong concrete having ultra-high pumping performance and method for preparing the same |
| CN101580369A (en) * | 2009-06-19 | 2009-11-18 | 清华大学 | Fiber reinforced high-strength mortar used for concrete structure repair |
| CN102584129A (en) * | 2012-03-02 | 2012-07-18 | 中国建筑股份有限公司 | Dry powder of active powder concrete and use method of dry powder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107721288A (en) * | 2017-11-14 | 2018-02-23 | 湖州力奥电梯配件有限公司 | A kind of elevator hoistways upper beam structure |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150325 |