An Investigation on Production of Blended Cement with Natural Building Stone Waste Resistant to Sulphate Effects

Abstract

In this study, the cements produced by the additive materials from Isparta city, Turkeyand its region which gives puzzolanic activity are compared with normal Portland cement. Inthis comparison sulphate resistance and other cement properties are examined.The natural additives which undergone various procedures are blended with clinker andgypsum under different proportions, which are main cement compounds. Prepared mortarspecimens cured in the water for 28 days and then they were exposed to three differentproportions of sodium sulphate solution for 125 days. Afterwards performances of cementsare determined with compressive strength. Also the prepared specimens for during 3 monthsperiod and there are cured under moist atmosphere volume expansion are measured andcontinuously monitored.The results show that, diatomite blended cement having more porous structure thanandesite powder were more affected by sulphate attack. As in the normal standard tests, byadding 10 % of these materials gave similar strength values with 42.5 Portland cement, atlater periods of time.