Effect of Decomposed-Stone Dust on Properties of Concrete

Abstract

TThe objective focused on the study of shrinkage behavior of concrete using Decomposed-Stone Dust to replace Portland cement type 1 in the ratio of 10, 15 , and 20 percent by weight of binder as well as designing compressive strength at 280 kg/cm2. Testing the formation time, shrinkage behavior, and compressive strength of concrete was compared with the concrete using Portland cement type 1. The study found that the concrete using Decomposed-Stone Dust was an increased formation period in accordance with the amount of replaced Decomposed-Stone Dust. Autogenous shrinkage, dry shrinkage, and compressive strength of concrete mixed with Decomposed-Stone Dust were less than control concrete. In all mixing ratios, the ratio of 20% replacement of Portland cement dust was the most suitable for this study. The initial formation time was 155 minutes. The final formation period was 305 minutes. The autogenous shrinkage was 312 microns, the dry shrinkage was 699 microns and compressive strength was 286 kg/cm2 respectively at age 28 days.