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The article addresses the effect of finely ground waste glass on the properties of hardened cement paste and mortar. Cement mixtures were formulated by replacing 0 %, 5 %, 10 %, 15 %, 20 %, 25 %, and 30 % of cement with ground waste glass. The tests revealed that hardened cement paste and mortar specimens containing 5 % of ground waste glass had higher density, ultrasonic pulse velocity as well as compressive and bending strengths values. Microstructure analyses of specimens containing 5 % of ground waste glass were done to determine the effect of ground waste glass on the microstructure of hardened cement paste and mortar. Cement hydration products and the contact area between the cement matrix and the ground waste glass were analysed in SEM images. The assessment of the cured mortar properties indicated that ground waste glass could be used in the manufacture of modified mortar for construction by replacing up to 5 % of cement with ground waste glass.

THE EFFECT OF GROUND GLASS WASTE ON PROPERTIES OF HARDENED CEMENT PASTE AND MORTAR