Kuat Tekan dan Kuat Tarik Mortar sebagai Bahan Graut dengan Faktor Air Semen Optimum

Abstract

Grout works as a binding agents of wall construction, paste parts on precast concrete, a filler on concrete or crack also sealing a conctrete join. The purpose of this study is knowing optimum concrete grout composition. Grout strength hopefully can fulfill compression and tension strength needed, fulfill slashyness requirements, no bleeding and no segregration. Research began with preliminary test of mortar composition charasteristics. Most of fine aggregate composition using sand with slightly  fine sand gradation. The mortar slashyness test using mortar flow and funnel test that flow time of mortar used as slashyness rate. Next tests are compression and tension test of mortars. The variation of mortars composition are using cement : sand ratio in the amount of 1:0,5; 1:1; 1:1,5 and 1:2. The result from each mix with optimum W/C Ratio for the compression strength test in the amount of 1:0,5; 1:1; 1:1,5 and 1:2 consecutively are 45,518 MPa; 37,875 MPa; 34,673 and 28,202 MPa. For the tension strength test are 3,054 MPa; 3,314 MPa; 3,498 Mpa and 1,791 MPa.