Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses a novel concrete cracking-resistant modifier. The novel concrete cracking-resistant modifier is prepared from following raw materials, by weight, 1.5 to 3.3 parts of sodium dodecyl benzene sulfonate, 3 to 7 parts of calcium bentonite, 5 to 8 parts of glycerin, 2.5 to 5 parts of solid silane powder, 1.2 to 2.5 parts of sodium citrate, 1.6 to 2.8 parts of polyoxyethylene rosin ester, 1.2 to 1.8 parts of butylnaphthalenesulfonic acid sodium salt, and 1.5 to 2.7 parts of ferrocene. Compared with conventional modifiers, water-reducing rate of the novel concrete cracking-resistant modifier is higher than 6%; separation degree is reduced obviously; concrete pumpability and workability are improved significantly; when air content is 6% or less, concrete rupture strength is increased 10 to 30%; frost resistance is increased more than 10 times; deicer-frost scaling resistance is increased more than 5 times; other endurance performance 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 cracking-resistant modifier. The novel concrete cracking-resistant modifier is prepared from following raw materials, by weight, 1.5 to 3.3 parts of sodium dodecyl benzene sulfonate, 3 to 7 parts of calcium bentonite, 5 to 8 parts of glycerin, 2.5 to 5 parts of solid silane powder, 1.2 to 2.5 parts of sodium citrate, 1.6 to 2.8 parts of polyoxyethylene rosin ester, 1.2 to 1.8 parts of butylnaphthalenesulfonic acid sodium salt, and 1.5 to 2.7 parts of ferrocene. Compared with conventional modifiers, water-reducing rate of the novel concrete cracking-resistant modifier is higher than 6%; separation degree is reduced obviously; concrete pumpability and workability are improved significantly; when air content is 6% or less, concrete rupture strength is increased 10 to 30%; frost resistance is increased more than 10 times; deicer-frost scaling resistance is increased more than 5 times; other endurance performance 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.