INFLUENCE OF DIMENSION OF TEST SPECIMEN ON ALKALI SILICA REACTIVE EXPANSION UNDER 80℃

摘要

The paper studies the influence of dimension of test specimen on alkali silica reactive expansion under 80℃. It is discovered that under the condition, the dimension of test specimen influence significantly alkali silica reactive expansion too. The regularity is similar to that under autoclaved condition and normal temperature. The relative expansion of mortar bar is relative to degree of the reaction between the activated compound in the aggregate and the alkali. To raise the reliability evaluating the al-kali reactivity of aggregate, the bigger test specimen and the smaller aggregate should be used, and the experimental time should be prolonged.