Optimum Level of Replacement Slag

Optimum Level of Replacement Slag in OPC-Slag  Mortars

ABSTRACT

The present paper  reports the testing  of 14 OPC-slag  mortars and  ۲  controls OPC  and slag mortars. The main aim  is to  determine the optimum level of replacement slag for achievement to the highest early strength with reasonable flow. Variable was the  level of GGBFS in the binder. In this experimental work, two types of sands were used that are: silica and mining sands. It is determined  that the optimum level of replacement slag is 40% and use of silica sand in OPC is preferable to mining sand and reversely, use of  mining sand is preferred in GG100 to silica sand. All mortars had W/B and S/B 0.33 and 2.25, respectively.

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