These research aims are not only to examine the influences of Recycled Coarse Aggregate (RA) replacement on fracture properties of Recycled Aggregate Concrete (RAC) but to fundamentally establish their results as an initial reference for further investigation in this field. Recycled aggregate replacement were 50%, 75% and 100% by weight. The simplest surface pre-treatment for RA was saturated surface dry to remove some dust and remaining particles. Water-to-Cement ratio was designed to be 0.6 for both cylindrical and notched beam specimens. Cylindrical specimens were molded for mechanical properties experiment while notched RAC beams which three proportional different geometrical similarity sizes were used to determine fracture parameters based on Size Effect Method. The critical stress intensity factor and fracture energy release rate decreased with the increasing of the recycled aggregate replacements.
Keywords
Recycled Aggregate (RA), Recycled Aggregate Concrete (RAC), Stress Intensity Factor (SIF), Fracture energy release rate, Brittleness number