Fresh and shrinkage properties of self-compacted concrete when using recycled glass as aggregate

摘要

In this experimental study, the shrinkage characteristics of self-compacting concrete were investigated when using green colored recycled glass (RG) as a replacement of natural aggregates (NAs). For this purpose, fine and/or coarse grade NAs were replaced by RG at 0, 20, 40, 60, 80, and 100%, by weight. Three SCCs series were designed with a constant slump flow of 70030mm, total binder content of 570kg/m(3) and at water-to-binder (w/b) ratio of 0.35. Moreover, fly ash (FA) was used in concrete mixtures at 20% of total binder content. Fresh properties of mixtures were experimentally investigated in terms of slump flow diameter, T-500 slump flow time, V-funnel flow time, and L-box height ratio. The findings indicated that the flowability is increased by increase of slump flow, but viscosity is increased as well as what decreases workability. While, the results of physical properties of self-compacting glass concrete concluded that the RG reduces the free shrinkage, weight loss and restrained shrinkage until the age of 50days.