Effects of Foundry Sand Powder from Engine Parts Casting on Ready-Mixed Concrete Properties

Abstract

The objective of this research was to study the properties of ready-mixed concrete containingfoundry sand powder, which is a main by-product from engine parts casting process. The propertiesinvestigated included chemical composition and physical properties. The fresh concrete propertiestested were water requirement of concrete, slump loss, unit weight, setting time, and compressivestrength was performed. The types and mix proportions of ready-mixed concrete tested were normalconcrete without chemical admixtures, with ordinary Portland cement type I contents of 300, 350,and 400 kg/m3, initial slump of 5 ± 0.5, 10 ± 0.5, and 15 ± 0.5 cm, and percentage replacementsof SSW foundry sand by weight of ordinary Portland cement type I (0, 10, 20, 30, and 40%).

The test results found that the water requirement of concrete containing foundry sandincreased not more than 1.1% whereas, the unit weight decreased 0.1 - 1.6% when compared withthe normal concrete. The slump loss and setting time increased when compared with normalconcrete. Whereas, the early age compressive strength decreased. However, the rates of long termcompressive strength development of SSW concrete was higher than those of the normal concrete.