Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses a novel concrete antifreezing modifier. The novel concrete antifreezing modifier is composed of following raw materials, by weight, 1.5 to 3.3 parts of sodium dodecyl benzene sulfonate, 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 ferrocene. Compared with conventional modifiers, water-reducing rate of the novel 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 a novel concrete antifreezing modifier. The novel concrete antifreezing modifier is composed of following raw materials, by weight, 1.5 to 3.3 parts of sodium dodecyl benzene sulfonate, 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 ferrocene. Compared with conventional modifiers, water-reducing rate of the novel 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.