Studies of alkali-silica reaction. Part 7. Modelling of expansion

摘要: This paper describes work undertaken to relate the expansion of concrete prisms temperature and sodium chloride concentration their environment. A large number 40x40x160 mm mortar were cast using one 2 sand types: Nymoelle Kallerup. In each case had following composition: 1 part low alkali Portland cement, 3 parts sand, 0.5 water by weight. The air content mortars kept below 4% volume. After 27 days curing, divided into groups. Each group was then placed in a container containing solutions: 0.5, or normal strength saturated. containers tightly stopped bath maintained at 20, 30, 50 70 degrees C. lengths measured intervals up 82 weeks. results show that prisms, due silica reaction, can be quantitatively related both ion temperature. relationship expressed mathematically formula for so doing is presented.