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A technology for setting retarder and concrete is applied in the field of concrete admixtures, which can solve the problems of unsatisfactory concrete strength and air pollution, and achieve the effect of improving retarding effect and increasing strength.
Active Publication Date: 2017-01-11
GUILIN HUAYUE ENVIRONMENTAL PROTECTION TECH CO LTD
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Although it can obtain a strong retarding effect, it is still unsatisfactory in terms of concrete application, especially
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Embodiment 1
[0038] A composite concrete retarder, made of the following components in proportion by weight: 4 parts of sodium fluorosilicate, 6 parts of sodium dihydrogen phosphate, 6 parts of ammonium bicarbonate, 5 parts of ammonium persulfate, 8 parts of aminoacetic acid Parts, 4 parts of sodium methylcellulose, 3 parts of shellac, 2 parts of ammonium oxalate, 12 parts of halloysite, Al 2 o 3 -ZrO 2 18 parts of porous ceramic powder, 4 parts of water reducer, 2 parts of dispersant, 0.5 part of surfactant.
Embodiment 2
[0040] A composite concrete retarder, made of the following components in proportion by weight: 2 parts of sodium fluorosilicate, 3 parts of sodium dihydrogen phosphate, 4 parts of ammonium bicarbonate, 4 parts of ammonium persulfate, 7 parts of glycine Parts, 2 parts of sodium methylcellulose, 2 parts of shellac, 1 part of ammonium oxalate, 10 parts of halloysite, Al 2 o 3 -ZrO 2 15 parts of porous ceramic powder, 2 parts of water reducer, 1 part of dispersant, 0.3 part of surfactant.
Embodiment 3
[0042] A composite concrete retarder, made of the following components in proportion by weight: 6 parts of sodium fluorosilicate, 9 parts of sodium dihydrogen phosphate, 8 parts of ammonium bicarbonate, 6 parts of ammonium persulfate, 9 parts of glycine Parts, 6 parts of sodium methylcellulose, 4 parts of shellac, 3 parts of ammonium oxalate, 15 parts of halloysite, Al 2 o 3 -ZrO 2 20 parts of porous ceramic powder, 5 parts of water reducer, 3 parts of dispersant, and 0.6 part of surfactant.
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Abstract
The invention discloses a composite concrete retarder, made from, by weight, 2-6 parts of sodium fluorosilicate, 3-9 parts of sodium dihydrogen phosphate, 4-8 parts of ammonium bicarbonate, 4-6 parts of ammonium persulfate, 7-9 parts of glycine, 2-6 parts of sodium carboxymethyl cellulose, 2-4 parts of shell-lac, 1-3 parts of ammonium oxalate, 10-15 parts of halloysite, 15-20 parts of Al2O3-ZrO2 porous ceramic powder, 2-5 parts of a water-reducing agent, 1-3 parts of a dispersant, and 0.3-0.6 part of a surfactant. The composite concrete retarder has the advantages of good retarding effect, high strength, zero pollution and the like, and is a concrete admixture that is promising.
Description
technical field [0001] The invention relates to a composite concrete retarder, belonging to the technical field of concrete admixtures. Background technique [0002] Concrete admixture is a commonly used reagent in the concrete preparation process. It not only has a small dosage, but also can improve the performance of concrete to meet actual needs. At the same time, it can also save cement, reduce energy consumption and reduce pollutant emissions. Common admixtures are: early strength agent, water reducing agent, air-entraining agent, retarder, etc. Among them, retarder is a kind of heat release rate that can delay and reduce cement hydration, thereby prolonging the time for concrete to fully set, making fresh concrete maintain plasticity for a long time, convenient for pouring, and improving construction efficiency. An admixture that does not adversely affect the performance of the item. Therefore, retarders play an important role in the field of concrete. [0003] At p...
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