Effect of addition of slag in cement mortar products on mechanical and chemical properties

摘要

This is an experiment on the effect of adding various slag concentrations as Portland composite cement (PCC) on themechanical and chemical properties. Slag waste is lumps of low-quality metal mixed with other materials. The elementalcontent of Ca in slag has the potential to be used as a substitute for PCC cement in cement mortar products. Slag powder 325mesh and 400 mesh of 10, 20, 30, and 40% mass concentrations of PCC cement were used in this experiment. The mechanicalproperties of compressive strength, density, burn shrinkage, porosity and absorption were found to be 4.840 MPa, 2.76 g/cm~3, 3.03%, 1.2% and 10.08% respectively, as optimum conditions. Ca elements and CaAl_2Si_2O_8?4H_2O phases that affectmortar adhesion are shown from the results of each XRF and XRD.