Uttam Jadhav
Engineering
May 2022
The major goal of this study is to give an alternative to traditional fine aggregate for cement mortar manufacture. For this experiment, two commonly used mortar mix proportions (1:4 and 1:6) were chosen, with granite powder with a fineness modulus of 0.9 serving as fine aggregate. The experiment was carried out in two stages. In the first stage, granite powder was used to substitute fine sand with a fineness modulus of 1.65 in the range of 0% to 100%. The results of workability, fresh bulk density, compressive strength, and water absorption were compared to those of a control mortar. The results showed that when river sand was completely replaced with granite powder, the w/c required to obtain the acceptable workability increased from 1.2 to 2.3. As a result, the compressive strength of these mortar mixes decreased by 41% while water absorption increased by 56%. Granite powder was used to replace 30 percent and 40 percent of the volume of fine aggregate in the second stage. The remaining fine aggregate volume was made up of coarse sand with a fineness modulus of 2.65.
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