抄録
In regard to antiwashout underwater concrete using three-component cement, technique for reduction of heat generation with addition of anhydrite and characteristics of granulated blast-furnace slag (G. B. F. S.) were studied. We also examine stability and hydrate texture of the low-heat concrete, to which this technique was applied. Increasing the fineness and the basicity of G. B. F. S. and adding of anhydrite in adequate blending rate obtain low-heat and long-term strength development. Quantity of aluminium trioxide, fineness, basicity of G. B. F. S. influence the effect of anhydrite adding. Addition of anhydrite also changes kind of hydrate products and texture of concrete on account of consumption of anhydrite adding and product of ettringite since early age on hardening. It consequently affect the strength, heat generation, expansibility of concrete.
