An Evaluation of Strength for Artificial Lightweight Aggregate

Abstract

 The method of British Standard (BS) for mineral aggregate has an advantage that can statistically evaluates the strength of a large number of aggregates in one time. But we could not find any correlation of BS crushing value and strength of an artificial lightweight aggregate, which has high strength and low water absorption, newly produced by Taiheiyo Cement Corporation. By compression, fragments from crushed aggregates nil spaces inside the cylinder that would increases friction between piston and cylinder.
　It is studied a new method to press a large number of aggregates, which array in one layer, and here we call this method as "monolayer loading test". As a result, we could find a good relation between values of monolayer loading test and compressive strength of the aggregate. By this method, we can evaluate the strength of the artificial lightweight aggregate statistically.