ENVIRONMENTALLY FRIENDLY LOW HEAT MIX CEMENT COMPOSITION, ENVIRONMENTALLY FRIENDLY LOW HEAT CONCRETE USING THEREOF, AND MANUFACTURING METHOD THEREOF

摘要

PURPOSE: An environmentally-friendly low-heat mixed cement composition, environmentally-friendly low-heat concrete using the same and a method of manufacture thereof are provided to reduce hydration heat and to enhance early strength manifestation. CONSTITUTION: An environmentally-friendly low-heat mixed cement composition is composed of 20-55.9 wt% of ground granulated blast-furnace slag, 20-35 wt% of fly ash, 20-33 wt% of normal Portland cement, 3-6 wt% of polymer blast furnace slag, 1-5 wt% of polymer anhydrous gypsum and 0.1-1 wt% of alkali activation reagent. The fineness of waste concrete micro powder is 2,500-3,500cm^2/g. The fineness of polymer blast furnace slag is 4,500-5,500cm^2/g. The fineness of the polymer anhydrous gypsum is 8,000-12,000cm^2/g. The environmentally-friendly low-heat mixed cement composition additionally includes 3-10 parts by weight of the waste concrete micro powder based on 100 parts by weight of the mixed cement composition. [Reference numerals] (AA) Heat insulation temperature increasing amount(deg. Celsius); (BB) Comparative example 1; (CC) Comparative example 2; (DD) Comparative example 3; (EE) Practical example 1; (FF) Practical example 2; (GG) Age(day)