ALKALI-ACTIVATED BINDER WITH NO CEMENT INCLUDING SLAKED DOLOMITE

摘要

PURPOSE: A cement-free alkali-activated binder containing light-burned dolomite is provided to prevent a rapid curing phenomenon and alkali aggregate reaction by replacing the total or partial alkaline inorganic materials into the light-burned dolomite, and to improve internal density for excellent intensity. CONSTITUTION: A cement-free alkali-activated binder containing light-burned dolomite contains a raw material and an alkaline inorganic material. The raw material includes blast furnace slag, fly ash, or silica fume. The alkaline inorganic material contains light-burned dolomite powder. 3-20 parts by weight of alkaline inorganic material are mixed with 100 parts by weight of raw material. The alkaline inorganic material additionally contains more than one compound selected from calcium hydroxide, sodium silicate, or sodium carbonate. The alkaline inorganic material contains the light-burned dolomite powder and the calcium hydroxide in a weight ratio of 35-55:45-65. The cement-free alkali-activated binder containing light-burned dolomite is contained in cement-free alkali-activated mortar. [Reference numerals] (AA) Slump (mm); (BB) Light-burned dolomite; (CC) Sodium silicate 2%; (DD) Non-addition; (EE) Light-burned dolomite addition rate (%)