Methods of strengthening the grains of recycled aggregates

Abstract Poorer quality indicators than natural aggregates generally characterize recycled aggregates. This is due to the composition of primary raw material (mostly demolition waste), method processing (crushing, sorting) and typical character grains, which, in addition original grain aggregate, also contains adhered mortar. The resulting grains are heterogeneous, characterized by lower strength, higher porosity, absorbency, or presence cracks. Improving these one approaches increase their potential for use concrete. Several methods concrete aggregate (RCA) strengthening being studied worldwide, effect which on final new different. article describes compares terms impact selected properties both. comparative analysis based collection results presented research publications. Based evaluation results, polymer emulsion treatment can be identified as most effective way improve RCA water absorption. Sodium silicate came out best compressive strength mixed with treated RCA.