Published By: Blue Eyes Intelligence Engineering & Sciences Publication Pvt. Ltd. Behavior of Polymer Strengthened Plain Concrete

Abstract-In developing countries, structures damaged due to extreme loading such as earthquakes or deteriorated due to aging needs to be frequently repaired instead of replacement for economic reasons. In this research, effectiveness of polymer modified mortar on the mechanical properties of repaired Plain Cement Concrete (PCC) was studied through laboratory testing. 69 specimens (18 x Prisms, 30 x cubes and 21 x cylinders) were cut in different ways including horizontal, vertical, single, double and inclined cuts. The cut specimens were then repaired using mortars modified with three polymers namely Styrene Butadiene Rubber Latex, ZUBA (latex of various polymers) and Polyvinyl Acetate polymers and were tested under compressive and flexural load and the strength was compared with reference specimen. The restored compressive strength of the repaired specimens was in the range of 54 to 98 percent of the original strength of reference specimen. In case of cubes and prisms, the failure plane of repaired specimens was away from the cut plane showing the effectiveness of polymer modified mortar