CN104072011B - Concrete alkali-free liquid rapid hardening reinforcing agent - Google Patents
Concrete alkali-free liquid rapid hardening reinforcing agent Download PDFInfo
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- CN104072011B CN104072011B CN201410339104.5A CN201410339104A CN104072011B CN 104072011 B CN104072011 B CN 104072011B CN 201410339104 A CN201410339104 A CN 201410339104A CN 104072011 B CN104072011 B CN 104072011B
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Abstract
A kind of concrete alkali-free liquid rapid hardening reinforcing agent, the mass percent preparing material therefor composition is: aluminum sulfate 15%～32.5%, hydramine 1.5%～5%, magnesium silicate 0.25%～1%, unformed aluminium hydroxide 7.5%～10%, formic acid 0.5%～5%, oxalic acid 0.5%～1.5%, boehmite 1.5%～2.5%, Polyethylene Glycol 5%～10%, amide 0.05%～0.15%, water 50%；Providing the benefit that: the present invention is liquid, and dissolubility is good, stability is strong, and the holding time is long；Early strength rapid development, within 1 day, intensity is all at more than 8MP, intensity free of losses in 28 days, even some strength of cement is improved 10%～30%；Totally chlorine free, alkali-free, nontoxic, reinforcing bar is corrosion-free；Volume is little, makes concrete coagulation fast.
Description
Technical field
The present invention relates to a kind of concrete additive, be specifically related to a kind of alkali-free and concrete rapid hardening can be made and improve the additive of intensity.
Technical background
China started to perform JC477-2005 " gunite concrete accelerator " standard from August 1st, 2005, had wherein added the technology requirement of liquid accelerator, experimental technique.Thus embodying the development trend of accelerator, namely being changed to liquid accelerator by solid powdery accelerator, at present, the liquid accelerator on market has the certain defect of self: places easily precipitation, causes Quality Down；Alkali content is too high, corrosion reinforcing bar, people is damaged excessive, and concrete strength also has bad impact；Volume is excessive, causes that concrete indices is all defective；High cost, suitable production in enormous quantities.
Summary of the invention
Present invention aim to overcome that the deficiency of existing product, it is provided that a kind of alkali-free rapid hardening is conducive to improving the concrete alkali-free liquid rapid hardening reinforcing agent of concrete strength.
The technical solution used in the present invention is: a kind of concrete alkali-free liquid rapid hardening reinforcing agent, by aluminum sulfate, hydramine, magnesium silicate, unformed aluminium hydroxide, formic acid, oxalic acid, boehmite, Polyethylene Glycol, amide and water composition, it is characterized in that: the mass percent preparing material therefor composition is: aluminum sulfate 15%～32.5%, hydramine 1.5%～5%, magnesium silicate 0.25%～1%, unformed aluminium hydroxide 7.5%～10%, formic acid 0.5%～5%, oxalic acid 0.5%～1.5%, boehmite 1.5%～2.5%, Polyethylene Glycol 5%～10%, amide 0.05%～0.15%, water 50%.
The invention has the beneficial effects as follows:
1. the present invention is liquid, and dissolubility is good, and stability is strong, and the holding time is long.
2. early strength rapid development, within 1 day, intensity is all at more than 8MP, intensity free of losses in 28 days, even some strength of cement is improved 10%～30%.
3. totally chlorine free, alkali-free, nontoxic, reinforcing bar is corrosion-free.
4. volume is little, makes concrete coagulation fast.
Detailed description of the invention
Further illustrate the present invention by the examples below.
Embodiment 1
According to concrete alkali-free liquid rapid hardening reinforcing agent prepared by following weight percentage ratio: aluminum sulfate 22.5%, hydramine 4%, magnesium silicate 0.95%, unformed aluminium hydroxide 9%, formic acid 4%, oxalic acid 0.5%, boehmite 1.5%, Polyethylene Glycol 7.5%, amide 0.05%, water 50%.This method can rapid condensation when volume is little.
Embodiment 2
Aluminum sulfate 25%, hydramine 4%, magnesium silicate 0.95%, unformed aluminium hydroxide 7.5%, formic acid 1%, oxalic acid 0.5%, boehmite 2.5%, Polyethylene Glycol 8.5%, amide 0.05%, water 50%.This method is conducive to late strength of concrete to strengthen to some extent.
Embodiment 3
Aluminum sulfate 30%, hydramine 1.5%, magnesium silicate 0.45%, unformed aluminium hydroxide 8%, formic acid 3%, oxalic acid 0.5%, boehmite 1.5%, Polyethylene Glycol 5%, amide 0.05%, water 50%.This method is conducive to concrete early stage strength enhancing.
The present embodiment and commercial samples contrast table
| Initial set/min | Final set/min | 1d intensity/MPa | 28d intensity/MPa | |
| Example 1 | 2:10 | 6:20 | 7.9 | 78.6 |
| Example 2 | 3:20 | 7:40 | 7.7 | 79.4 |
| Example 3 | 2:50 | 7:10 | 8.4 | 78.8 |
| Commercial samples | 4:00 | 9:15 | 7.1 | 75.5 |
Claims (1)
1. a concrete alkali-free liquid rapid hardening reinforcing agent, it is made up of aluminum sulfate, hydramine, magnesium silicate, unformed aluminium hydroxide, formic acid, oxalic acid, boehmite, Polyethylene Glycol, amide and water, it is characterized in that: the mass percent preparing material therefor composition is: aluminum sulfate 15%～32.5%, hydramine 1.5%～5%, magnesium silicate 0.25%～1%, unformed aluminium hydroxide 7.5%～10%, formic acid 0.5%～5%, oxalic acid 0.5%～1.5%, boehmite 1.5%～2.5%, Polyethylene Glycol 5%～10%, amide 0.05%～0.15%, water 50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410339104.5A CN104072011B (en) | 2014-07-11 | 2014-07-11 | Concrete alkali-free liquid rapid hardening reinforcing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410339104.5A CN104072011B (en) | 2014-07-11 | 2014-07-11 | Concrete alkali-free liquid rapid hardening reinforcing agent |
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| Publication Number | Publication Date |
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| CN104072011A CN104072011A (en) | 2014-10-01 |
| CN104072011B true CN104072011B (en) | 2016-07-06 |
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| CN201410339104.5A Active CN104072011B (en) | 2014-07-11 | 2014-07-11 | Concrete alkali-free liquid rapid hardening reinforcing agent |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109437654A (en) * | 2018-12-11 | 2019-03-08 | 湖北腾辰科技股份有限公司 | A kind of preparation method of enhanced alkali-free liquid accelerator |
| CN109761532B (en) * | 2019-01-21 | 2021-06-15 | 江苏奥莱特新材料股份有限公司 | Low-resilience high-early-strength alkali-free liquid accelerator and preparation method thereof |
| CN110963741A (en) * | 2019-12-27 | 2020-04-07 | 芜湖弘马新材料有限公司 | Early-strength powdery alkali-free liquid accelerator core master batch and preparation method and application thereof |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9928977D0 (en) * | 1999-12-08 | 2000-02-02 | Mbt Holding Ag | Process |
| JP2006193388A (en) * | 2005-01-14 | 2006-07-27 | Construction Research & Technology Gmbh | Liquid quick-setting agent |
| EP1878713B1 (en) * | 2006-07-14 | 2009-04-22 | Construction Research and Technology GmbH | Stable shotcrete accelerator dispersion with high content in active matter |
| CN101182139A (en) * | 2007-11-12 | 2008-05-21 | 华南理工大学 | Masonry cement having higher strength and water retention |
| CN101423356A (en) * | 2008-11-20 | 2009-05-06 | 同济大学 | Environment-friendly type alkali-free liquid accelerator for sprayed concrete and preparation method thereof |
| CN102531452B (en) * | 2010-12-10 | 2014-09-10 | 苏笮斌 | Anti-corrosion anti-cracking reinforcing agent composition and preparation method thereof |
| CN102249592A (en) * | 2011-06-01 | 2011-11-23 | 中国水利水电科学研究院 | Alkali-free chlorine-free high-early-strength liquid accelerator and preparation method thereof |
| CN102992677A (en) * | 2012-09-29 | 2013-03-27 | 北京东方雨虹防水技术股份有限公司 | Alkali-free liquid accelerator and preparation method and application thereof |
| CN103819117B (en) * | 2014-01-08 | 2016-03-30 | 洛阳理工学院 | A kind of alkali-free chlorine-free liquid concrete toughener and preparation method thereof |
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Address after: 044000 Xingxing Avenue 9, Yanhu High-tech Industrial Development Zone, Yuncheng City, Shanxi Province Patentee after: Shanxi Geruite construction Polytron Technologies Inc Address before: 044000 No. 1 Xinxin Road, Yanhu Industrial Park, Yuncheng City, Shanxi Province Patentee before: Shanxi Geruite Building Technology Co., Ltd. |