INFLUENCE OF USING THE LOCAL SLAG ON THE POROSITY  AND ABSORPTION OF THE HIGH PERFORMANCE CONCRETE

	INFLUENCE OF USING THE LOCAL SLAG ON THE POROSITY AND ABSORPTION OF THE HIGH PERFORMANCE CONCRETE
AL-TAQANI
Article 1, Volume 24, Issue 2, 2011, Pages 0-0
Abstract
Slag is an industrial disposal which considered as a secondary product of pig- iron . these disposal will cause a severe harm to the environment in case of not get rid of it . In the practical part of our research slag has been added to the concrete mix in two ways , first by using it to replace as cement by weight as a substitutions of cement in different percent ( 10 , 20 , 30 , 40 ) % , second by using the slag instead of apart of sand in the same percent as mentioned in first . In addition to first and second above super plasticizer ( melment L10) has been added as percent of (5.5% ) from cement use in the mixture . The result shows improvement in all concrete specimens for the added percentage of the slag as replacement materials and the addition of super plasticizer ( melment L10) in the production of concrete with high workability and improvement in its properties such as the initial surface absorption , total absorption and porosity relative with the reference mix. The use slag of ( 10,20) % as addition material instead of part of sand showed slightly improvement in the properties , but the addition of ( 30,40)% produced low concrete workability and as a result increasment of initial surface absorption , total absorption and porosity

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