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The Center for Transportation Research at the University of Texas at Austin has released a report, titled “Evaluation of the Benefits of Diamond Grinding of CRCP: Final Report”, that outlines the testing and evaluation of a continuously reinforced concrete pavement (CRCP) on a highway that was rehabilitated using diamond grinding. This report outlines the testing and evaluation of a CRCP on IH35W near Fort Worth that was rehabilitated using diamond grinding instead of applying an asphalt overlay to extend the serviceability of the old concrete pavement. Surface macrotexture, skid, roughness and noise testing were done prior to the diamond grinding to establish reference levels for comparison.
After grinding, these four tests of the surface were repeated after 4, 9 and 15 months to evaluate the effectiveness and efficiency of this rehabilitation strategy.
Statistical analyses of the data collected were done to investigate the change in surface properties with diamond grinding and how the macrotexture, skid, roughness, and noise of the surface changed over time. The influence of pre-existing surface condition, traffic load, and speed on the deterioration of the diamond-ground surface was also investigated. The study indicates the benefit of diamond grinding as a rehabilitation strategy for enhancing the functionality of aged CRCP, but extended monitoring of the diamond-ground sections is recommended to better define the serviceability, service life, and benefit/cost ratio of this strategy.
Authors: Prasad Buddhavarapu, André de Fortier Smit, Jorge A. Prozzi, and Manuel Trevin[/vc_column_text][/vc_column][/vc_row][vc_row][vc_column width=”1/1″][button new_tab=”yes” icon_position=”left” special_style=”no” border_radius=”2″ three_d=”no” size=”default” color=”default” title=”View Report” link=”http://library.ctr.utexas.edu/ctr-publications/5-9046-01-1.pdf”][/vc_column][/vc_row]