The Effect of Curing Medium on the Physico-mechanical Properties of Alkali-activated Slag

S.M. Hafeez1, M.M. Elwan2, H. El-Didamony3

1 Zagazig University, Faculty of Science, Chemistry department, Zagazig, Egypt
2 Tabbin Institute for Metallurgical Studies, Helwan, Egypt
3 Zagazig University, Faculty of Science, Chemistry department, Zagazig, Egypt

Revision

Volume 4, Issue 4, Pages 71 - 76

Abstract

Blast furnace slag is a by-product from the production of pig-iron, which has caused some pollution problems in the area around the Steel Iron Company in Helwan/EG. The utilization of this waste product in the production of any product therefore saves money and prevents pollution of the atmosphere. Alkali-activated Slag (AAS) is a binder that can be used as a substitute for Ordinary Portland Cement (OPC) thanks to its ability to resolve most of the problems associated with OPC.AAS can be prepared by the activation of granulated slag by an activator. In this research work the granulated slag is activated with 2, 4, 6 and 8 mass-% NaOH and cured in humidity and under tap water. A comparative study of the physico-mechanical properties in the two curing conditions was investigated. The results revealed that curing in humidity (100 % RH) is better than under tap water as there is no leaching of certain materials.

Keywords

alcali-activated slag, pig iron

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