Hydration of cement with added vinyl acetate

Abstract

Effect of vinyl acetate addition to the ordinary cement on its properties like heat of hydration, setting time, compressive and tensile strength has been studied by adding 0.1 to 5.0 per cent additive by weight of cement. It was observed that the compressive and tensile strengths, hardness, toughness and corrosion resistance increase up to 3.0 per cent vinyl acetate addition in the ordinary Portland cement. Polymeric phase is interspersed in the cement and causes decrease in the water absorption/open porosity of the modified cement products. The chemical interaction between functional group of organic material and hydrating cement phases causes the formation of new phases which cause additional bond formation in addition to cement bonds leading to the increase in strength. © 2008 Taylor and Francis Group, LLC.