CHEMICAL ADDITIVE FOR CALCIUM SULPHOALUMINATE-MODIFIED PORTLAND CEMENT

摘要

Provided is a chemical additive for a calcium sulphoaluminate-modified Portland cement, which includes: (a) at least one alkanolamine borate; (b) at least one organic alcohol; and (c) at least one saccharide or a derivative thereof. The above-mentioned substances and water are mixed and stirred so as to obtain the chemical additive for a calcium sulphoaluminate-modified Portland cement. The chemical additive for a calcium sulphoaluminate-modified Portland cement has better effects in terms of the regulation of the setting time and the improvement of the 3d/28 strength increase rate on the calcium sulphoaluminate-modified Portland cement, and also has an auxiliary grinding effect.