Effects on concrete properties by ASR deterioration under different exposure conditions

Mechanical tests on concrete affected by ASR were conducted to identify the changes in concrete properties over time. Accelerated testing was performed according to ASTM C 1260 (2007) and ASTM C1293 (2008) procedures. Cylinders of plain concrete were cast and tested to determine their compressive strength (f_cu) and modulus of Elasticity (E_c). The degradation of these properties in ASR-affected concrete is studied by comparing four different mixes made of Greywacke and Granite aggregate, with and without ground granulated corex slag partial replacement of cement. Different results have been obtained from the two test methods. The change in strength and stiffness of concrete under ASTM C 1260 conditions is significantly different from that under ASTM C 1293 conditions due to the different exposure conditions.