Abstract
Effect of sodium salt of carboxymethyl-cellulose (CMC) on the properties of ordinary Portland cement has been studied. Variations in setting time, heat of hydration, compressive strength, fracture toughness have been determined. FT-IR and XRD techniques have been employed to determine the phase compositions of the material. Interaction between CMC and cement hydrated products takes place and new phases are formed in the presence of water, which lead to the formation of strong bonds and sealing of the pores in the resulting products, causing decreased water absorption and more corrosion resistance as compared with the ordinary Portland cement.
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