Slag from a blast furnace is usually ground down and used as a cement substitute as it is re-use of a waste product - it is not used on its own in concrete as the chemical reaction will not produce...
Slag is the waste which is skimmed off the top of the molten iron that comes out of the blast furnace. It is a mixture of calcium and magnesium compounds, plus other impurities such as iron oxide,...
Cement is one of 4 main ingredients in concrete: Portland Cement Water Fine Aggregate Course Aggregate (and sometime chemical admixtures)Portland cement can be replaced in various proportions...