A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses a durable concrete modifier which is prepared from the following raw materials in parts by weight: 2.5-6 parts of t-butyl-cresol, 1.2 to 3.5 parts of sodium palm oil fatty acid methyl ester sulfonate, 1.3-2.6 parts of acrylonitrile-isoprene-styrene, 5-10 parts of deionized water, 0.8 to 2.2 parts of propyl p-hydroxybenzoate, 2.5 to 3.6 parts of polyamide-chloromethyl ethylene oxide resin and 0.8 to 1.8 parts of cellulose acetate butyrate. Compared with the existing modifier, the durable concrete modifier provided by the invention has the advantages that the water reduction rate is more than 6%, and the separation is obviously lowered; the pumpability and workability of concrete are obviously improved; when the gas content is not more than 6%, the flexural strength of the concrete can be increased by 10 to 30%; the frost resistance is increased by more than 10 times; the deicer-scaling resistance is increased by more than 5 times; other durability such as salt crystallization pressure damage and alkali aggregate reaction damage can also be obviously improved, the water solubility and the compatibility with other additives are good, the service life of the concrete is prolonged, and the maintenance cost is reduced.
The invention discloses a durable concrete modifier which is prepared from the following raw materials in parts by weight: 2.5-6 parts of t-butyl-cresol, 1.2 to 3.5 parts of sodium palm oil fatty acid methyl ester sulfonate, 1.3-2.6 parts of acrylonitrile-isoprene-styrene, 5-10 parts of deionized water, 0.8 to 2.2 parts of propyl p-hydroxybenzoate, 2.5 to 3.6 parts of polyamide-chloromethyl ethylene oxide resin and 0.8 to 1.8 parts of cellulose acetate butyrate. Compared with the existing modifier, the durable concrete modifier provided by the invention has the advantages that the water reduction rate is more than 6%, and the separation is obviously lowered; the pumpability and workability of concrete are obviously improved; when the gas content is not more than 6%, the flexural strength of the concrete can be increased by 10 to 30%; the frost resistance is increased by more than 10 times; the deicer-scaling resistance is increased by more than 5 times; other durability such as salt crystallization pressure damage and alkali aggregate reaction damage can also be obviously improved, the water solubility and the compatibility with other additives are good, the service life of the concrete is prolonged, and the maintenance cost is reduced.