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Slump loss resistant concrete pumping aid

A concrete pump and slump-preserving technology, which is applied in the field of building materials, can solve problems such as slump loss, and achieve the effects of small slump loss, good economic and social benefits, and good concrete performance

Active Publication Date: 2017-10-24
RIZHAO FEM NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The slump loss of existing naphthalene-based pumping agent concrete is fast

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A slump-preserving concrete pumping agent, which is prepared from the following raw materials in parts by weight: 30 parts of naphthalene-based high-efficiency water reducer, 8 parts of diethanol monoisopropanolamine maleate compound, and 5 parts of glycerol carbonate , 3 parts of triethylamine, 0.6 part of simethicone, 3 parts of retarder, 0.3 part of fatty alcohol polyoxyethylene ether, and 40 parts of water.

[0023] Said, the solid content of the naphthalene-based high-efficiency water reducer is 95%, the pH value is 8-9, and the sodium sulfate content is lower than 10%.

[0024] Described, diethanol monoisopropanolamine maleate compound is made by following method: add diethanol monoisopropanolamine and maleic anhydride in reactor, add catalyzer, depressurize to 0.4MPa, heating, the temperature is controlled at 95°C, the system is kept at a constant temperature, and the acidity of the system is measured every 1h, and the reaction stops when the acid value does not ...

Embodiment 2

[0033] A slump-preserving concrete pumping agent, which is prepared from the following raw materials in parts by weight: 25 parts of naphthalene-based high-efficiency water reducer, 10 parts of diethanol monoisopropanolamine maleate compound, and 6 parts of glycerol carbonate , 4 parts of triethylamine, 0.4 part of simethicone, 5 parts of retarder, 0.2 part of fatty alcohol polyoxyethylene ether, and 50 parts of water.

[0034] Said, the solid content of the naphthalene-based high-efficiency water reducer is 95%, the pH value is 8-9, and the sodium sulfate content is lower than 10%.

[0035] Described, diethanol monoisopropanolamine maleate compound is made by following method: add diethanol monoisopropanolamine and maleic anhydride in reactor, add catalyzer, depressurize to 0.4MPa, heating, the temperature is controlled at 95°C, the system is kept at a constant temperature, and the acidity of the system is measured every 1h, and the reaction stops when the acid value does not...

Embodiment 3

[0044] A slump-preserving concrete pumping agent, which is prepared from the following raw materials in parts by weight: 20 parts of naphthalene-based high-efficiency water reducer, 12 parts of diethanol monoisopropanolamine maleate compound, and 7 parts of glycerol carbonate , 5 parts of triethylamine, 0.2 part of simethicone, 7 parts of retarder, 0.1 part of fatty alcohol polyoxyethylene ether, and 60 parts of water.

[0045] Said, the solid content of the naphthalene-based high-efficiency water reducer is 95%, the pH value is 8-9, and the sodium sulfate content is lower than 10%.

[0046] Described, diethanol monoisopropanolamine maleate compound is made by following method: add diethanol monoisopropanolamine and maleic anhydride in reactor, add catalyzer, depressurize to 0.4MPa, heating, the temperature is controlled at 95°C, the system is kept at a constant temperature, and the acidity of the system is measured every 1h, and the reaction stops when the acid value does not...

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Abstract

The invention discloses a slump loss resistant concrete pumping aid, which is prepared from the following raw materials in parts by weight: 20 to 30 parts of naphthalene high efficient water reducer, 8 to 12 parts of diethanol isopropanol amine maleate, 5 to 7 parts of glycerol carbonate, 3 to 5 parts of triethylamine, 0.2 to 0.6 part of dimethyl silicone oil, 3 to 7 parts of retarder, 0.1 to 0.3 part of fatty alcohol polyoxyethylene ether, and 40 to 60 parts of water. The provided slump loss resistant concrete pumping aid has the advantages that the properties of the naphthalene high efficient water reducer are obviously improved through diethanol isopropanol amine maleate, glycerol carbonate, and triethylamine. The concrete prepared therefrom has the advantages that the durability is good, the slump loss resistant performance is strong, water secretion is prevented, the slump loss is little, good workability and pumping property of concrete are effectively maintained, the pumping requirements can be met, and the pumping aid is suitable for various cements and generates good economic benefits and social benefits.

Description

technical field [0001] The invention relates to building materials, in particular to a slump-preserving concrete pumping agent. Background technique [0002] Concrete pumping agent is an admixture used in concrete mixing and construction. It can increase the workability of concrete, so that the concrete mixture can pass through the pipeline smoothly, without blocking, without segregation, and with good viscoplasticity. Pumping agent is an admixture that must be used in modern concrete construction. [0003] At present, the general concrete is poured by pumping technology at the construction site. Therefore, the concrete needs to have good fluidity and pumpability. However, since the concrete in the mixing station is transported from the mixing station to the construction site by a concrete mixer truck, once Traffic jams or long distances, the time for mixing the concrete is too long, and the fluidity will be severely lost and cannot be pumped. During the construction proce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/42
Inventor 肖维录
Owner RIZHAO FEM NEW MATERIAL TECH
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