A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention relates to a composite cement grinding aid, and belongs to the technical field of cement grinding aids. The composite cement grinding aid comprises the following raw materials by weight: 20-30 parts of polyethylene glycol ether, 15-25 parts of a sulfonated melamine resin, 10-20 parts of diatomaceous earth, 10-20 parts of hydroxypropyl methyl cellulose, 5-10 parts of triisopropanolamine, 5-10 parts of methacrylic acid, 1-5 parts of beta-hydroxyethyl ethylenediamine, and 1-5 parts of sodium lignin sulfonate. According to the composite cement grinding aid of the present invention, through the reasonable ratio of various raw materials, under the premise of the small doping amount, the yield per unit of time is increased to more than or equal to 15%, the 3-day cement strength can be increased to more than or equal to 3 MPa, and the 28-day cement strength can be increased to more than or equal to 5 MPa.
The invention relates to a composite cement grinding aid, and belongs to the technical field of cement grinding aids. The composite cement grinding aid comprises the following raw materials by weight: 20-30 parts of polyethylene glycol ether, 15-25 parts of a sulfonated melamine resin, 10-20 parts of diatomaceous earth, 10-20 parts of hydroxypropyl methyl cellulose, 5-10 parts of triisopropanolamine, 5-10 parts of methacrylic acid, 1-5 parts of beta-hydroxyethyl ethylenediamine, and 1-5 parts of sodium lignin sulfonate. According to the composite cement grinding aid of the present invention, through the reasonable ratio of various raw materials, under the premise of the small doping amount, the yield per unit of time is increased to more than or equal to 15%, the 3-day cement strength can be increased to more than or equal to 3 MPa, and the 28-day cement strength can be increased to more than or equal to 5 MPa.