CN104761193A - Self-compacting concrete prepared through condensation polymerization type-copolymerization type composite water reducing agent - Google Patents
Self-compacting concrete prepared through condensation polymerization type-copolymerization type composite water reducing agent Download PDFInfo
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- CN104761193A CN104761193A CN201410027153.5A CN201410027153A CN104761193A CN 104761193 A CN104761193 A CN 104761193A CN 201410027153 A CN201410027153 A CN 201410027153A CN 104761193 A CN104761193 A CN 104761193A
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- reducing agent
- water reducing
- self
- compacting concrete
- composite water
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention discloses a self-compacting concrete prepared through a condensation polymerization type-copolymerization type composite water reducing agent. The self-compacting concrete comprises 280 kg/m<3> of cement, 840 kg/m<3> of sand, 840 kg/m<3> of stone with a particle size of 5-20 mm, 280 kg/m<3> of grade-I fly ash, 175 kg/m<3> of water, and 4.8 kg/m<3> of a condensation polymerization type-copolymerization type composite water reducing agent, wherein the condensation polymerization type-copolymerization type composite water reducing agent is formed by compounding a naphthalene water reducing agent and a polycarboxylic acid slump-retaining agent according to a ratio of 3:2. The self-compacting concrete of the present invention has the following advantages that: 1, the improved polycarboxylic acid slump-retaining agent has good water reducing effect and good plastic retaining effect; 2, the composite water reducing agent doped concrete provides the better workability compared with the concrete simply doped with the naphthalene water reducing agent; 3, the project trial results show that the self-compacting concrete of the present invention has characteristics of excellent mechanical properties, high volume stability, and high durability; and 4, the component ratio is scientific and rational, and the performance and the effect are satisfactory.
Description
Technical field
The present invention relates to a kind of concrete, the self-compacting concrete of particularly a kind of condensation polymer type-copoly type composite water-reducing agent preparation.
Background technology
Self-compacting concrete be exactly can flow by self weight, closely knit, without the need to vibrating, each corner of free filling template, and obtain the closely knit concrete of nature.Current preparation self-compacting concrete all will add water reducer, slump retaining agent to increase concrete high workability, high volume stability, high-durability.But water reducer, the slump retaining agent less effective of existing self-compacting concrete owing to adding, the proportioning of component is scientific and reasonable not, and result causes the finished product performance, effect undesirable in addition.
Summary of the invention
The object of the present invention is to provide a kind of self-compacting concrete of condensation polymer type-copoly type composite water-reducing agent preparation meeting modern concrete high workability, high volume stability, high-durability requirement.
The technical solution used in the present invention is, the mix parameters of high-strength self-compacting concrete of this condensation polymer type-copoly type composite water-reducing agent preparation is: cement 280kg/m
3, sand 840kg/m
3, particle diameter is the stone 840kg/m of 5-20mm
3, I level flyash 280kg/m
3, water 175kg/m
3, condensation polymer type-copoly type composite water-reducing agent 4.8kg/m
3, wherein condensation polymer type-copoly type composite water-reducing agent is by naphthalene water reducer and polycarboxylic acid series slump retaining agent is composite forms, and naphthalene water reducer and polycarboxylic acid series slump retaining agent proportioning are 3: 2.
The performance of described polycarboxylic acid series slump retaining agent and existing polycarboxylic acid series slump retaining agent, preparation technology is completely different, it belongs to modified version polycarboxylic acid series slump retaining agent, its preparation technology is as follows: in the reactor that condensation reflux unit is housed, add terminal hydroxy group polyoxyethylene ether, after heating and melting, add catalyzer, maleic anhydride, carry out solvent-free esterification, the esterification polymeric monomer obtained and minor comonomer carry out initiation copolyreaction, multipolymer is through neutralization, after regulating concentration, namely polycarboxylic acid slump retaining agent is obtained, described minor comonomer is vinylbenzene, vinylformic acid, maleic anhydride, one or more in alkenyl sulphonate.
Owing to taking technique scheme, therefore the present invention has the following advantages: be the structures shape of polycarboxylic acid series slump retaining agent its performance and a result of use.Adopt molecular designing theory, the modified version polycarboxylic acid series slump retaining agent of design and synthesis has good diminishing, model retention effect according to requirements.Two is that modified version polycarboxylic acid series slump retaining agent is compatible with naphthalene water reducer, can overcome under normal circumstances, polycarboxylic acid series slump retaining agent and the inconsistent performance deficiency of soluble sulphate, by affecting cement hydrating hardening process, improves the adaptability of water reducer and cement.The concrete mixing composite water-reducing agent has workability more better than the concrete mixing merely naphthalene water reducer.Three is that engineering result on trial shows, mechanical performance of concrete of the present invention is excellent, has high volume stability, high-durability.Four is that component proportioning is scientific and reasonable, product performance, satisfactory for result.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail.
Embodiment 1, the mix parameters of high-strength self-compacting concrete of this condensation polymer type-copoly type composite water-reducing agent preparation is: cement 280kg/m
3, sand 840kg/m
3, particle diameter is the stone 840kg/m of 5-20mm
3, I level flyash 280kg/m
3, water 175kg/m
3, condensation polymer type-copoly type composite water-reducing agent 4.8kg/m
3, wherein condensation polymer type-copoly type composite water-reducing agent is by naphthalene water reducer and polycarboxylic acid series slump retaining agent is composite forms, and naphthalene water reducer and polycarboxylic acid series slump retaining agent proportioning are 3: 2.
The performance of described polycarboxylic acid series slump retaining agent and existing polycarboxylic acid series slump retaining agent, preparation technology is completely different, it belongs to modified version polycarboxylic acid series slump retaining agent, its preparation technology is as follows: in the reactor that condensation reflux unit is housed, add terminal hydroxy group polyoxyethylene ether, after heating and melting, add catalyzer, maleic anhydride, carry out solvent-free esterification, the esterification polymeric monomer obtained and minor comonomer carry out initiation copolyreaction, multipolymer is through neutralization, after regulating concentration, namely polycarboxylic acid slump retaining agent is obtained, described minor comonomer is vinylbenzene, vinylformic acid, maleic anhydride, one or more in alkenyl sulphonate.
Claims (1)
1. a self-compacting concrete for condensation polymer type-copoly type composite water-reducing agent preparation, is characterized in that mix parameters of high-strength self-compacting concrete is: cement 280kg/m
3, sand 840kg/m
3, particle diameter is the stone 840kg/m of 5-20mm
3, I level flyash 280kg/m
3, water 175kg/m
3, condensation polymer type-copoly type composite water-reducing agent 4.8kg/m
3, wherein condensation polymer type-copoly type composite water-reducing agent is by naphthalene water reducer and polycarboxylic acid series slump retaining agent is composite forms, and naphthalene water reducer and polycarboxylic acid series slump retaining agent proportioning are 3: 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410027153.5A CN104761193A (en) | 2014-01-04 | 2014-01-04 | Self-compacting concrete prepared through condensation polymerization type-copolymerization type composite water reducing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410027153.5A CN104761193A (en) | 2014-01-04 | 2014-01-04 | Self-compacting concrete prepared through condensation polymerization type-copolymerization type composite water reducing agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104761193A true CN104761193A (en) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410027153.5A Pending CN104761193A (en) | 2014-01-04 | 2014-01-04 | Self-compacting concrete prepared through condensation polymerization type-copolymerization type composite water reducing agent |
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| CN (1) | CN104761193A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105801053A (en) * | 2016-03-16 | 2016-07-27 | 武汉源锦商品混凝土有限公司 | Self-compacting concrete with high content of fly ash C40 |
| CN114105517A (en) * | 2021-12-09 | 2022-03-01 | 福州创先工程材料有限公司 | Polycarboxylic acid high-performance water reducing agent |
-
2014
- 2014-01-04 CN CN201410027153.5A patent/CN104761193A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105801053A (en) * | 2016-03-16 | 2016-07-27 | 武汉源锦商品混凝土有限公司 | Self-compacting concrete with high content of fly ash C40 |
| CN114105517A (en) * | 2021-12-09 | 2022-03-01 | 福州创先工程材料有限公司 | Polycarboxylic acid high-performance water reducing agent |
| CN114105517B (en) * | 2021-12-09 | 2022-07-15 | 福州创先工程材料有限公司 | Polycarboxylic acid high-performance water reducing agent |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150708 |
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| WD01 | Invention patent application deemed withdrawn after publication |