CN103396034A - Liquid accelerator for sprayed concrete and application thereof - Google Patents
Liquid accelerator for sprayed concrete and application thereof Download PDFInfo
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- CN103396034A CN103396034A CN2013103101620A CN201310310162A CN103396034A CN 103396034 A CN103396034 A CN 103396034A CN 2013103101620 A CN2013103101620 A CN 2013103101620A CN 201310310162 A CN201310310162 A CN 201310310162A CN 103396034 A CN103396034 A CN 103396034A
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- sprayed concrete
- liquid accelerator
- accelerator
- aluminate
- concrete
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Abstract
The invention discloses a liquid accelerator for sprayed concrete. The liquid accelerator for sprayed concrete comprises the following components in percent by weight: 30-50% of aluminum sulfate, 0.5-1.5% of triethanolamine, 10-30% of aluminate, 1.0-5.0% of cellulose, 5-10% of high-effect water reducing agent and the balance of water. In construction of sprayed concrete, mixing amount of the accelerator is 2-5% of cement. The accelerator has a good accelerating effect, initial setting time is 2-4 minutes, final setting time is 4-8 minutes, early strength development is fast, 28 days compressive strength ratio is more than 95%, caking property is good, and a resilience value is low; besides, the accelerator is chloride-free and low-alkaline, and risks of a concrete alkali-aggregate reaction and corrosion to reinforced concrete can be greatly reduced.
Description
Technical field
The present invention relates to building material technical field, be specifically related to a kind of liquid accelerator for sprayed concrete and application thereof.
Background technology
In construction of shotcrete, accelerating chemicals is a kind of indispensable admixture.Its effect is to make concrete slurry condense rapidly and harden.The accelerating chemicals of present domestic use, major part is all take aluminate, carbonate or silicate as main component, the accelerating chemicals that is composited with other inorganic salts again, these accelerating chemicals alkalescence are large, easily workmen's eyes skin is damaged, also easily cause concrete " dodging solidifying ", affect concrete aquation structure, cause late strength of concrete to reduce.Simultaneously, the materials from bonding poor performance, the construction rebound degree is high, causes waste of material, improves construction costs.
Summary of the invention
For solving the deficiencies in the prior art, the object of the present invention is to provide a kind ofly without chlorine, low alkali, early strength is high, later strength is than high, dust concentration and low liquid accelerator for sprayed concrete and the application thereof of springback capacity.
For achieving the above object, the present invention is achieved by the following technical solutions:
A kind of liquid accelerator for sprayed concrete comprises the component of following weight percent: Tai-Ace S 150 30～50%, and trolamine 0.5～1.5%, aluminate 10～30%, Mierocrystalline cellulose 1.0～5.0%, high efficiency water reducing agent 5～10%, surplus is water.
Further, described aluminate is sodium aluminate or potassium aluminate.
Further, described Mierocrystalline cellulose is Vltra tears or methylcellulose gum or Natvosol.
Further, described high efficiency water reducing agent is naphthalene sulfonic acidformaldehyde condensation product, or sulfonated melamine compound resin, or the aliphatic hydroxyl sulphonate condenses.
The application of above-mentioned liquid accelerator for sprayed concrete in construction of shotcrete.
The volume of described accelerating chemicals is 2～5% of cement weight.
The invention has the beneficial effects as follows: accelerating chemicals of the present invention has good rapid hardening effect, presetting period 2min～4min, and final setting time 4min～8min, the early strength development is fast, and the 28d compressive strength rate surpasses 95%, and cohesiveness is good, springback capacity is few; In addition, accelerating chemicals of the present invention is without chlorine, low alkali, can greatly reduce the risk of concrete alkaliaggregate reaction and to the erosion of Steel Concrete.
Embodiment
Below in conjunction with specific embodiment, the present invention is done to concrete introduction.
Embodiment 1
Liquid accelerator for sprayed concrete comprises the component of following weight percent: Tai-Ace S 150 50%, trolamine 0.5%, sodium aluminate 15%, Vltra tears 3.0%, aliphatic hydroxyl sulphonate condenses 5%, surplus are water, and above-mentioned each component mixed preparing is formed.Above component is commercially available prod.
In the construction of shotcrete process, in cement, mix accelerating chemicals of the present invention, the volume of accelerating chemicals is 5% of cement weight; Can make jelling time is 3min, and final setting time is 5min, and cement mortar 1d ultimate compression strength reaches 13.43MPa, and the 28d compressive strength rate surpasses 95%.
Embodiment 2
Liquid accelerator for sprayed concrete comprises the component of following weight percent: Tai-Ace S 150 40%, trolamine 0.7%, potassium aluminate 10%, and Natvosol 5.0%, sulfonated melamine compound resin 5%, surplus is water; Above-mentioned each component mixed preparing is formed.Above component is commercially available prod.
In the construction of shotcrete process, in cement, mix accelerating chemicals of the present invention, the volume of accelerating chemicals is 4% of cement weight, can make jelling time is 3.5min, final setting time is 6min, and cement mortar 1d ultimate compression strength reaches 8.12MPa, and the 28d compressive strength rate surpasses 96%.
Embodiment 3
Liquid accelerator for sprayed concrete comprises the component of following weight percent: Tai-Ace S 150 40%, trolamine 1.0%, sodium aluminate 10%, and methylcellulose gum 5.0%, aliphatic hydroxyl sulphonate condenses 7%, surplus is water; Above-mentioned each component mixed preparing is formed.Above component is commercially available prod.
In the construction of shotcrete process, in cement, mix accelerating chemicals of the present invention, the volume of accelerating chemicals is 3% of cement weight, can make jelling time is 2.5min, final setting time is 4.5min, and cement mortar 11d ultimate compression strength reaches 8.28MPa, and the 28d compressive strength rate surpasses 98%.
Embodiment 4
Liquid accelerator for sprayed concrete is pressed Tai-Ace S 150 30%, trolamine 1.0%, sodium aluminate 30%, methylcellulose gum 3.0%, and aliphatic hydroxyl sulphonate condenses 10%, surplus is water; Above-mentioned each component mixed preparing is formed.Above component is commercially available prod.
In the construction of shotcrete process, in cement, mix accelerating chemicals of the present invention, the volume of accelerating chemicals is 2% of cement weight, can make jelling time is 3min, final setting time is 7.5min, and cement mortar 1d ultimate compression strength reaches 8.93MPa, and the 28d compressive strength rate surpasses 100%.
Embodiment 5
Liquid accelerator for sprayed concrete is pressed Tai-Ace S 150 35%, trolamine 1.5%, sodium aluminate 25%, Natvosol 1.0%, and naphthalene sulfonic acidformaldehyde condensation product 10%, surplus is water; Above-mentioned each component mixed preparing is formed.Above component is commercially available prod.
In the construction of shotcrete process, in cement, mix accelerating chemicals of the present invention, the volume of accelerating chemicals is 3% of cement weight, can make jelling time is 3.5min, final setting time is 8min, and cement mortar 1d ultimate compression strength reaches 8.93MPa, and the 28d compressive strength rate surpasses 100%.
Above-described embodiment does not limit the present invention in any form, and all employings are equal to replaces or technical scheme that the mode of equivalent transformation obtains, all drops in protection scope of the present invention.
Claims (6)
1. a liquid accelerator for sprayed concrete, is characterized in that, comprises the component of following weight percent: Tai-Ace S 150 30～50%, and trolamine 0.5～1.5%, aluminate 10～30%, Mierocrystalline cellulose 1.0～5.0%, high efficiency water reducing agent 5～10%, surplus is water.
2. liquid accelerator for sprayed concrete according to claim 1, is characterized in that, described aluminate is sodium aluminate or potassium aluminate.
3. liquid accelerator for sprayed concrete according to claim 1, is characterized in that, described Mierocrystalline cellulose is Vltra tears or methylcellulose gum or Natvosol.
4. liquid accelerator for sprayed concrete according to claim 1, is characterized in that, described high efficiency water reducing agent is naphthalene sulfonic acidformaldehyde condensation product, or sulfonated melamine compound resin, or the aliphatic hydroxyl sulphonate condenses.
5. the application of liquid accelerator for sprayed concrete according to claim 1 in construction of shotcrete.
6. application according to claim 5, is characterized in that, the volume of described accelerating chemicals is 2～5% of cement weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103101620A CN103396034A (en) | 2012-09-05 | 2013-07-23 | Liquid accelerator for sprayed concrete and application thereof |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103248635A CN102786256A (en) | 2012-09-05 | 2012-09-05 | Liquid accelerator for sprayed concrete and application thereof |
| CN201210324863.5 | 2012-09-05 | ||
| CN2013103101620A CN103396034A (en) | 2012-09-05 | 2013-07-23 | Liquid accelerator for sprayed concrete and application thereof |
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| CN103396034A true CN103396034A (en) | 2013-11-20 |
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| CN2012103248635A Pending CN102786256A (en) | 2012-09-05 | 2012-09-05 | Liquid accelerator for sprayed concrete and application thereof |
| CN2013103101620A Pending CN103396034A (en) | 2012-09-05 | 2013-07-23 | Liquid accelerator for sprayed concrete and application thereof |
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| CN2012103248635A Pending CN102786256A (en) | 2012-09-05 | 2012-09-05 | Liquid accelerator for sprayed concrete and application thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107963846A (en) * | 2017-12-29 | 2018-04-27 | 成都精准混凝土有限公司 | A kind of gunite concrete and preparation method thereof |
| CN108046642A (en) * | 2018-01-23 | 2018-05-18 | 云南森博混凝土外加剂有限公司 | A kind of strong concrete accelerator |
| CN108383416A (en) * | 2018-05-17 | 2018-08-10 | 昆明瑞通混凝土外加剂有限公司 | A kind of gunite concrete alkali-free liquid accelerator formula and manufacture craft |
| CN109761527A (en) * | 2019-02-21 | 2019-05-17 | 北京市建筑工程研究院有限责任公司 | A kind of bi-component accelerator and preparation method thereof |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103058565B (en) * | 2013-01-07 | 2015-02-11 | 山东科技大学 | Enhanced and low-rebound liquid setting accelerator used in wet spraying process |
| JP6131063B2 (en) * | 2013-02-06 | 2017-05-17 | デンカ株式会社 | Liquid quick setting agent, cement composition using the same, and spraying method |
| CN103755212A (en) * | 2013-12-19 | 2014-04-30 | 柳州正菱集团有限公司 | Concrete accelerator |
| CN105753364B (en) * | 2016-01-25 | 2017-12-26 | 湖南省建筑工程集团总公司 | A kind of alkali-free high-strength concrete accelerator |
| CN105776939B (en) * | 2016-03-15 | 2017-10-13 | 江苏中铁奥莱特新材料股份有限公司 | A kind of low resilience, enhancing, the preparation method of Liquid Low-Alkali Shotcrete Admixture |
| CN106495554B (en) * | 2016-10-09 | 2018-10-09 | 江苏宇辉住宅工业有限公司 | A kind of preparation method of stable type alkali-free quick-coagulant |
| CN106477960A (en) * | 2016-10-18 | 2017-03-08 | 四川巨星新型材料有限公司 | A kind of high-performance liquid accelerator composition and preparation method thereof |
| CN106630725B (en) * | 2016-12-01 | 2020-03-31 | 江苏苏博特新材料股份有限公司 | Liquid accelerator for sprayed concrete and preparation method thereof |
| CN109678388A (en) * | 2019-01-29 | 2019-04-26 | 新疆中材精细化工有限责任公司 | A kind of antifreeze alkali-free liquid accelerating agent and preparation method thereof |
| CN109879631B (en) * | 2019-03-25 | 2021-08-31 | 科之杰新材料集团有限公司 | High-strength solubilizing liquid accelerator and preparation method thereof |
| CN111995287A (en) * | 2019-05-27 | 2020-11-27 | 北京中矿时代工程技术研究院有限公司 | Composite additive for sprayed concrete, preparation method thereof and concrete composition |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101665336A (en) * | 2009-09-23 | 2010-03-10 | 江苏博特新材料有限公司 | Preparation method of low-alkaline liquid accelerating agent |
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2012
- 2012-09-05 CN CN2012103248635A patent/CN102786256A/en active Pending
-
2013
- 2013-07-23 CN CN2013103101620A patent/CN103396034A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101665336A (en) * | 2009-09-23 | 2010-03-10 | 江苏博特新材料有限公司 | Preparation method of low-alkaline liquid accelerating agent |
Non-Patent Citations (1)
| Title |
|---|
| 杨仁树 等: "喷射混凝土速凝剂的应用与发展", 《中国矿业》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107963846A (en) * | 2017-12-29 | 2018-04-27 | 成都精准混凝土有限公司 | A kind of gunite concrete and preparation method thereof |
| CN107963846B (en) * | 2017-12-29 | 2020-06-09 | 成都精准混凝土有限公司 | Sprayed concrete and preparation method thereof |
| CN108046642A (en) * | 2018-01-23 | 2018-05-18 | 云南森博混凝土外加剂有限公司 | A kind of strong concrete accelerator |
| CN108383416A (en) * | 2018-05-17 | 2018-08-10 | 昆明瑞通混凝土外加剂有限公司 | A kind of gunite concrete alkali-free liquid accelerator formula and manufacture craft |
| CN109761527A (en) * | 2019-02-21 | 2019-05-17 | 北京市建筑工程研究院有限责任公司 | A kind of bi-component accelerator and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102786256A (en) | 2012-11-21 |
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Application publication date: 20131120 |