SCC with crusher dust, fly ash and micro-silica

摘要

Crushed stone aggregates are widely used in concrete. In the process of producing of 20 mm and 10 mm nominal size aggregates, significant amount of crusher dust and stone chips in the size range of 2-6 mm are also obtained. Usually, most of these are not used in concrete. However, economical and environmental considerations warrant investigations on their possible use in concrete. The paper presents test results of an experimental study to explore the use of crusher dust, stone chips, and fly ash in self-compacting concrete (SCC). Test results indicate that SCC with satisfactory strength can be produced with such marginal materials when used together with fly ash and micro-silica.