Abstract
This paper describes the chemical and mineralogical features of reactive aggregates and their alkali-silica reactivity, which are collected over the Hokuriku district. Various test methods, which include JIS A1145, JIS A1146, ASTM C1260 and Danish mortar bar method, were carded out to clarify the alkali-silica reactivity of about 80 aggregates in the Hokuriku district. The compatibility between the test methods was discussed with respect to the expansion behavior of mortar bars containing reactive aggregates. Furthermore, by taking out the cores from the concrete specimens, and then by measuring their expansion behaviors in accelerated curing condition of the immersion in 1N NaOH solution or the saturated NaCl solution, the rapid test method for the evaluation of the alkali-silica reactivity of concrete itself was proposed.
