HIGH STRENGTH CEMENT, MORTAR AND CONCRETE INCLUDING INDUSTRIAL BY-PRODUCTS

摘要

Cementitious compositions in which the cementitious properties of fly-ash are carefully controlled. The cementitious compositions may be substantiall y free harsh acids and bases such as citric acids (~ pH 2.2) and alkali meta l activators including alkali hydroxides (~ pH 12-14) and metal carbonates ( ~ pH 11.6). The use of these harsh chemicals creates acid base reactions dur ing use of the products. Instead of these harsh chemicals, a citric salt, fo r example potassium citrate, may be used as a reaction accelerator. Boric co mpounds may be used as a retarder in the compositions.