Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses a lignin concrete modifier which is prepared from the following raw materials in parts by weight: 1.5-3.5 parts of lignin, 1.5-2.2 parts of polyacrylamide and glyoxal resin, 1.5-3.7 parts of epoxy silkworm chrysalis butyl oleate, 0.8-1.4 parts of phenyl salicylate, 3.5-4.8 parts of 4-polyisoprene rubber and 1.8-3.3 parts of phenethyl phenol polypropylene oxide polyoxyethylene ether. Compared with an existing modifier, if concrete containing lignin is used for construction, after a fire breaks out, lignin is softened when the temperature reaches 170 DEG C and is liquefied after the temperature reaches 200 DEG C, a large quantity of holes are left in the concrete after the lignin is liquefied, pressure generated in the concrete due to expansion of water vapor can be released through the holes, and therefore, the probability that the concrete breaks out or is collapsed is reduced.
The invention discloses a lignin concrete modifier which is prepared from the following raw materials in parts by weight: 1.5-3.5 parts of lignin, 1.5-2.2 parts of polyacrylamide and glyoxal resin, 1.5-3.7 parts of epoxy silkworm chrysalis butyl oleate, 0.8-1.4 parts of phenyl salicylate, 3.5-4.8 parts of 4-polyisoprene rubber and 1.8-3.3 parts of phenethyl phenol polypropylene oxide polyoxyethylene ether. Compared with an existing modifier, if concrete containing lignin is used for construction, after a fire breaks out, lignin is softened when the temperature reaches 170 DEG C and is liquefied after the temperature reaches 200 DEG C, a large quantity of holes are left in the concrete after the lignin is liquefied, pressure generated in the concrete due to expansion of water vapor can be released through the holes, and therefore, the probability that the concrete breaks out or is collapsed is reduced.