BASIC PROPERTIES AND DURABILITY OF CONCRETE WITH FLY ASH AND CACO3 POWDER

Abstract

This article presents basic properties and durability aspects of concrete
incorporating calcium carbonate (CaCO3) powder having average diameter
of 2 and 13 micron. The replacement percentages were varied from 5-20%
by weight of binder content. The tested basic properties were normal
consistency, setting time, slump, compressive strength and strength
development. Durability tests consisted of sulfate resistance, carbonation,
autogenous and drying shrinkage. It was found that a partial replacement of
cement with an optimum content of calcium carbonate not only improved
mechanical properties of concrete but also made concrete more durable.