2nd GeoHunan International Conference on Emerging Technologies for Design, Construction, Rehabilitation, and Inspections of Transportation Infrastructures
Three types of recycled coarse aggregate (RCA) produced from old cement beams with designed compressive strengths of 40, 60, and 80 MPa, respectively, were employed for measurement by X-ray diffraction (XRD), infrared absorption spectroscopy (IR), and scanning electron microscope (SEM). The XRD result indicated that the presence of Ca(OH)2 and anhydrates in the attached old cement mortar of the RCA may result in a new chemical reaction between the old cement mortar and the new cementitious binders when mixed to produce no-fines pervious recycled concrete (NPRC), which was contributable to the ...
