Impact of varying proportions of dolomite powder filler on setting period and compressive strength of magnesia Cement an eco-friendly cement

Abstract

A parametric study was conducted by authors to investigate the impact of varying proportions of dolomite as filler on cementing properties (standard consistency, setting time and compressive strength) of magnesia cement. For this purpose, dry-mix compositions were prepared by mixing magnesia and dolomite in the ratio 1:0, 1:1, 1:2, 1:3, 1:4, 1:5 and 1:6 by their weight and gauged with 24oBe and 28oBe densities of gauging solution. It was observed that initial and final both setting times were increasing remarkably. It has also been recorded that initial and final setting time of cement blocks increased with increasing concentration of gauging solution (24oBe and 28oBe) in the each dry-mix composition. Results show that both setting time of cement blocks are directly proportional to the ratio of inert filler in the dry-mix composition but compressive strength is decreased with varying dry-mixes ratio.