Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses an improved concrete antifreezing modifier. The improved concrete antifreezing modifier is composed of following raw materials, by weight, 1.5 to 3.3 parts of sodium allylsulfonate, 3 to 7 parts of a copolymer of isoprene and styrene, 5 to 8 parts of polyhydroxy acrylic resin, 2.5 to 5 parts of solid silicane powder, 1.2 to 2.5 parts of sodium citrate, 1.6 to 2.8 parts of rosin-polythylene oxide ester, 1.2 to 1.8 parts of sodium butylnaphthalenesulfonate, and 1.5 to 2.7 parts of polyoxyethylene octyl phenyl ether. Compared with conventional modifiers, water-reducing rate of the improved concrete antifreezing modifier is higher than 6%, and separation is weakened obviously; concrete pumpability and workability are improved obviously; when air content is 6% or lower, concrete flexural strength is increased 10 to 30%; frost-resistance is increased more than 10 times; deicer salt scaling resistance is increased more than 5 times; other durabilities such as salt crystallization pressure resistance and alkali-aggregate reaction resistance are improved obviously; water solubility is excellent; plyability with other additives is excellent; concrete service life is prolonged; and maintenance cost is reduced.
The invention discloses an improved concrete antifreezing modifier. The improved concrete antifreezing modifier is composed of following raw materials, by weight, 1.5 to 3.3 parts of sodium allylsulfonate, 3 to 7 parts of a copolymer of isoprene and styrene, 5 to 8 parts of polyhydroxy acrylic resin, 2.5 to 5 parts of solid silicane powder, 1.2 to 2.5 parts of sodium citrate, 1.6 to 2.8 parts of rosin-polythylene oxide ester, 1.2 to 1.8 parts of sodium butylnaphthalenesulfonate, and 1.5 to 2.7 parts of polyoxyethylene octyl phenyl ether. Compared with conventional modifiers, water-reducing rate of the improved concrete antifreezing modifier is higher than 6%, and separation is weakened obviously; concrete pumpability and workability are improved obviously; when air content is 6% or lower, concrete flexural strength is increased 10 to 30%; frost-resistance is increased more than 10 times; deicer salt scaling resistance is increased more than 5 times; other durabilities such as salt crystallization pressure resistance and alkali-aggregate reaction resistance are improved obviously; water solubility is excellent; plyability with other additives is excellent; concrete service life is prolonged; and maintenance cost is reduced.