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A technology of concrete and expansion agent, which is applied in the field of construction concrete expansion agent, can solve unsatisfactory problems, and achieve the effect of increasing market value, improving expansion effect, and having more pores
Active Publication Date: 2017-01-04
GUILIN HUAYUE ENVIRONMENTAL PROTECTION TECH CO LTD
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Embodiment 1
[0035] A building concrete expansion agent, which is made of the following components in proportion by weight: 15 parts of calcium aluminosilicate, 22 parts of calcium sulfoaluminate, 25 parts of sulfur-fixing waste residue, 20 parts of red mud, 12 parts of magnesium slag, 6 parts of modified calcium oxide, 5 parts of magnesium oxide, 6 parts of sodium methyl silicate, 4 parts of triisopropanolamine, 7 parts of potassium aluminum sulfate, 0.2 parts of azodicarbonamide, 0.6 parts of sodium citrate, 12 parts 3 parts of sodium alkylbenzene sulfonate, 0.5 parts of ethylene-vinyl acetate copolymer, 2 parts of polycarboxylate superplasticizer.
Embodiment 2
[0037]A building concrete expansion agent, which is made of the following components in proportion by weight: 10 parts of calcium aluminosilicate, 20 parts of calcium sulfoaluminate, 20 parts of sulfur-fixing waste residue, 15 parts of red mud, 10 parts of magnesium slag, 4 parts of modified calcium oxide, 4 parts of magnesium oxide, 3 parts of sodium methyl silicate, 3 parts of triisopropanolamine, 5 parts of potassium aluminum sulfate, 0.1 part of azodicarbonamide, 0.5 part of sodium citrate, 2 parts of sodium alkylbenzene sulfonate, 0.4 parts of ethylene-vinyl acetate copolymer, and 1 part of polycarboxylate superplasticizer.
Embodiment 3
[0039] A building concrete expansion agent, which is made of the following components in proportion by weight: 20 parts of calcium aluminosilicate, 25 parts of calcium sulfoaluminate, 30 parts of sulfur-fixing waste residue, 25 parts of red mud, 15 parts of magnesium slag, 8 parts of modified calcium oxide, 7 parts of magnesium oxide, 8 parts of sodium methyl silicate, 5 parts of triisopropanolamine, 8 parts of potassium aluminum sulfate, 0.3 parts of azodicarbonamide, 0.8 parts of sodium citrate, 4 parts of sodium alkylbenzene sulfonate, 0.6 parts of ethylene-vinyl acetate copolymer, and 3 parts of polycarboxylate superplasticizer.
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Abstract
The invention discloses an expansive agent for building concrete. The expansive agent comprises, by weight, 10-20 parts of calcium silicoaluminate, 20-25 parts of calcium sulfoaluminate, 20-30 parts of sulfur fixation residues, 15-25 parts of red mud, 10-15 parts of magnesium slag, 4-8 parts of modified calcium oxide, 4-7 parts of magnesium oxide, 3-8 parts of methanesiliconic acid sodium salt, 3-5 parts of triisopropanolamine, 5-8 parts of aluminum potassium sulfate, 0.1-0.3 part of azodicarbonamide, 0.5-0.8 part of sodium citrate, 2-4 parts of sodium dodecyl benzene sulfonate, 0.4-0.6 part of ethylene-vinyl acetate copolymers and 1-3 parts of polycarboxylic acid water reducing agents. The expansive agent has the advantages that the expansive agent is high in strength and excellent in compensation capacity and calcium oxide regulation and control reaction and is a concrete admixture with a great prospect, and the like.
Description
technical field [0001] The invention relates to a building concrete expansion agent, which belongs to the technical field of building material concrete admixtures. Background technique [0002] Concrete is the most widely used building material. With the development of science and technology, it is constantly being studied in depth, and its performance is improved and developed. In recent years, the shrinkage and cracking of concrete has become a research hotspot. This is because in the early stage of cement setting and hardening, water loss and changes in temperature and humidity are likely to cause volume shrinkage, and the tensile stress generated when the shrinkage is limited exceeds the concrete itself. When the tensile strength is high, cement concrete is prone to cracking; at the same time, the bearing capacity of the cracked concrete decreases sharply; moreover, the infiltration of water will further deteriorate the durability of concrete, resulting in corrosion of s...
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