Diamond grinding is a concrete pavement rehabilitation technique that corrects irregularities such as faulting and roughness on concrete pavements. Diamond grinding should be used in conjunction with other concrete pavement rehabilitation techniques. Diamond grinding restores rideability by removing surface irregularities caused by construction curling, slab warping, faulting, and roughness caused by concrete pavement rehabilitation construction work. The most immediate effect of diamond grinding is a significant improvement in the riding smoothness of a pavement. Another very important effect of diamond grinding is the significant increase in surface macro-texture and consequent noise reduction and safety improvement. Safety is improved by a temporary increase in skid friction resistance and a reduction in the potential for hydroplaning. Safety may also be improved by grooving the pavement surface. Grooving consists of cutting deeper channels that provides better drainage of water between the tires and the pavement surface and thus preventing skidding and hydroplaning.
Source: United States Department of Transportation, Federal Highway Administration. Retrieved from http://www.fhwa.dot.gov/pavement/concrete/diamond.cfm
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