Predicting Los Angeles abrasion of rocks from some physical and mechanical properties

摘要

Rock aggregate is widely used in building constructions and most public projects including roads, bridges, railroad etc. Aggregates, which do not have adequate toughness and abrasion resistance, may cause construction and performance problems. To assess the abrasion resistance of aggregates, the most common method is the Los Angeles abrasion (LAA) test determining the relative competence or resistance to abrasion of the aggregates. The aim of this study was to predict the LAA of rocks from some physical and mechanical properties. For this purpose, LAA and some physical and mechanical tests were performed on 32 different rocks, ten of which were igneous, eleven of which were metamorphic and eleven of which were sedimentary. To investigate the possibility of predicting the LAA from some rock properties, the results of the tests were analyzed using regression analysis. Good correlation between LAA and some physical and mechanical properties of rocks were found. Concluding remark was that derived equations could reliably be used for the prediction of LAA.