Abrasion Resistance Improvement of Recycled Aggregate Pervious Concrete with Granulated Blast Furnace Slag and Copper Slag

The poor abrasion resistance of recycled aggregate pervious concrete (RAPC) limits its application. Granulated blast furnace slag (GBFS) and copper (CS) were used as mineral admixtures to replace cement in RAPC for improving the resistance. At 10% GBFS replacement level, 5% 25% CS was added respectively, which reduced consumption cement. effects on paste fluidity, porosity, permeability, compressive strength evaluated. exhibited an excellent after adding CS. In this case, blended amount optimal Compared with single group, increased by 38.78%, is mainly because fayalite supplies good resistance, whereas also plays important role. mechanism studied via X-ray diffraction analysis microhardness. porosity permeability level. Moreover, leaching concentration heavy metal ions prepared significantly low, indicating that could be applied safely. results not only provides a feasible technical means large-scale utilisation but presents theoretical basis improvement