山梨県産砕石のアルカリ骨材反応性に関する一実験

概要

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The Alkali-aggregate reactivity of crushed stone aggregates produced from quarries in Yamanashi prefecture is investigated. Samples of crushed stone aggregate have been collected from eight different plants. These aggregates are utilized as concrete aggregates or as materials for pavement. The Alkali-aggregate reactivity of these aggregates is examined by the chemical and mortar-bar methods. Though it can be said from test results the reactivity of the aggregates is generally low, one sample taken at the plant near Mt. Yatsugatake, which is classified into andesite, has showed high Alkali-aggregate reactivity. As andesite is very popular in this area and it is well-known that the rock of andesite generally contains some minerals with high Alkali-aggregate reactivity, care should be paid to the Alkali-aggregate reactivity for the crushed stone concrete aggregate produced from new quarries plant.
山梨大学の論文