National Concrete Pavement Technology Center

Project description

Diamond grinding is a widely-used rehabilitation technique usually referred to as resurfacing of Portland cement concrete (PCC) pavement. As a maintenance operation, diamond grinding can provide a smooth PCC surface with enhanced texture and skid resistance and reduced road noise. Typically, this operation uses a truck equipped with grinding heads at ground level to saw a thin layer of concrete, grinding it into fine particles, while mixing with water to cool blades and reduce dust. This process generates a slurry byproduct known as concrete grinding residue (CGR). The majority of current maintenance practice involves spreading of fresh CGR on roadsides, resulting in potential environmental concerns regarding vegetation growth.