A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses an improved 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 isobutene, 1.5-3.7 parts of macromolecular wax, 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 poly-oxypropylene polyoxyethylene ether. Compared with an existing modifier, the improved concrete modifier has the advantages that if concrete with lignin is used in construction engineering, after a fire happens, lignin is softened at the temperature of 170 DEG C and is liquefied at the temperature of 200 DEG C; after lignin is liquefied, a large number of holes are retained in the concrete and can release pressure, caused by swelling of water vapor, in the concrete, so that the possibility that the concrete is burst or collapsed is reduced.
The invention discloses an improved 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 isobutene, 1.5-3.7 parts of macromolecular wax, 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 poly-oxypropylene polyoxyethylene ether. Compared with an existing modifier, the improved concrete modifier has the advantages that if concrete with lignin is used in construction engineering, after a fire happens, lignin is softened at the temperature of 170 DEG C and is liquefied at the temperature of 200 DEG C; after lignin is liquefied, a large number of holes are retained in the concrete and can release pressure, caused by swelling of water vapor, in the concrete, so that the possibility that the concrete is burst or collapsed is reduced.