Effects of selected chemical admixtures on physical and mechanical properties of cement mortar

  • SS Bethe Department of Farm Structure and Environmental Engineering, Bangladesh Agricultural University, Mymensingh 2202
  • MN Haque Department of Farm Structure and Environmental Engineering, Bangladesh Agricultural University, Mymensingh 2202
  • MR Islam Department of Farm Structure and Environmental Engineering, Bangladesh Agricultural University, Mymensingh 2202
Keywords: Chemical admixture; plasticizer, physical properties; mechanical properties

Abstract

This study was aimed to determination of appropriate dosage of selected chemical admixtures to reduce water cement ratio for mortar mix also to determine its effects on physical and mechanical properties of cement mortar. Amount of water used in concrete is very important for the physical and mechanical properties. Less amount of water increase the strength but reduce the workability. Water retarding admixture can reduce the water cement ratio with desired workability. In this experiment plasticizer (master pel 707) and super plasticizer (master polyheed 8632) was used. The used dosages of admixture were 0.5%, 1% and 1.5% according to cement weight. The test was done at 3 days, 7 days, 28 days and 91 days. 2.76″ cube mold was used for the work. The experiment was done to find the difference between with and without admixture used in mortar. Water used reduced with add of plasticizer and super plasticizer. In the experiment the workability of normal mortar and admixture used mortar remain same. The compressive strength is high for 1.5% super plasticizer used sample. So 1.5% super plasticizer is recommended for high strength.

Progressive Agriculture 30 (3): 305-310, 2019

Downloads

Download data is not yet available.
Abstract
110
PDF
36
Published
2020-01-29
How to Cite
Bethe, S., Haque, M., & Islam, M. (2020). Effects of selected chemical admixtures on physical and mechanical properties of cement mortar. Progressive Agriculture, 30(3), 305-310. https://doi.org/10.3329/pa.v30i3.45156
Section
Agricultural Engineering and Food Science