BEHAVIOUR OF MORTAR CONTAINING SILICA FUME AND FLY ASH USED FOR FERROCEMENT LAMINATES

摘要

This paper reports the results from laboratory studies on the compressive strength of mortar for Ferro cement that contains ternary blends of Portland cement, silica fume and super plasticizer as water reducing agent. Cement mortars (1:2, 1: 2.5 and 1:3) incorporating various water cementitious ratios (0.32, 0.35 and0.38) were used. The silica fume content is constant at 5% by weight of cement. Fly ash content varying from 10% to 20% and super plasticizer were used to maintain uniform flow of mortar which varies from 0% to 1% by weight of cement, to ensure that no segregation would occur. Totally 586 mortar cubes for each mix with mineral admixtures were tested for their compressive strength. Finally suggestions were made for the proportion of mineral admixtures to achieve high strength mortar which can be used for rehabilitation of reinforced concrete structures particularly with Ferro cement composites.