Hydraulic setting cement - contg. additives to ensure high early strength at low temperatures.

摘要

Hydraulic setting injection material consists of a mixture of 50-100% portland cement plus concrete additives comprises a flowing agent of naphthalene, sulphonic acid - polycarbonate with a degree of condensation of n = 5 to 10 and sulphonic acid modified acetone-formaldehyde condensation product (sodium salt) in a ratio of 1:3-6; 0.3-0.9 part per wt. Pb components based on 1000 parts by wt. cement; 0.4-2.0 parts by wt. defoaming agent and up to 0.05 part by wt. purgative agent based on 1000 parts by wt. cement. USE/ADVANTAGE - As filler material (4) in sanitary equipment, esp. between wall of waste water tube (1) and internal plastic liner (2). A high early strength is achieved at low temp. (4-12 deg.C).