LOW-CALCIUM SILICATE CEMENT, AND PREPARATION METHOD AND HARDENING METHOD THEREOF

摘要

A low-calcium silicate cement, which comprises, with the total mass of the oxides as 1, 50-60% of calcium oxide, 30-45% of silicon dioxide, 2-7% of aluminium oxide and 1-4% of iron oxide. The preparation method is as follows: crushing, grinding together and uniformly mixing raw materials to obtain a low-calcium silicate cement raw meal; calcining the raw meal at a temperature of 1050-1300°C for 30-90 min, cooling down to obtain a low-calcium silicate cement clinker, and then levigating the low-calcium silicate cement clinker to a specific surface area of 400-500 m²/kg to obtain a low-calcium silicate cement.