This Tech Brief summarizes a case study on slab stabilization in Missouri. Slab stabilization (also called undersealing and sub sealing) is the pressure insertion of a highly flowable material beneath the slab or stabilized base to restore the support beneath transverse and longitudinal joints that has been eroded away. Slab stabilization technology has improved over the years through better procedures and materials to provide a restoration of support of slabs that have experienced pumping and erosion leading to transverse joint and crack faulting, cracking, and roughness.

Concrete grinding residue (CGR) is a byproduct created by concrete pavement maintenance operations. The objectives of this research were to determine the impact of CGR additions to soil on both smooth brome biomass and plant and soil chemical parameters. Concrete diamond grinding residues will vary in their physical and chemical nature, and their impact on the environment will depend on the concrete composition, quality of grinding water, and the presence of organics on road surfaces.

The purpose of the testing was to compare the heat generated by the asphalt rubber surface to that generated by the diamond-ground concrete surface. The asphalt rubber surface ranged from 2 to 6 degrees hotter than the diamond ground surface in the travel lanes and up to 10 degrees higher on the shoulder. Just prior to sunrise, the asphalt rubber was still hotter than the diamond ground surface even after cooling all night.

The concrete industry funded and constructed four test sections on State Route 202 near its intersection with I-10 in Phoenix, Arizona. The purpose of the test sections is to evaluate the effectiveness of four different diamond grinding techniques on reducing traffic-generated noise characteristics of PCCP.

This preliminary report, prepared by the Seal No Seal Committee (SNS), outlines an approach to study transverse joint sealant effectiveness on SR59 near Joliet, Illinois. The experiment consists of constructing 8 sealed sections and two unsealed sections.

Construction operations such as hydro demolition, diamond grinding, and grooving of concrete infrastructure generate large amounts of concrete residuals. These residuals can be slurry water with suspended or dissolved concrete solids which must be disposed of or beneficially reused. In many instances, these residuals are classified as inert debris, allowing them to be reused as soil amendment or as fill material instead of disposed of in a landfill or a municipal wastewater treatment facility.