There are two stitching methods used to repair and strengthen longitudinal cracks or joints in concrete pavement. The first, and most common, is cross-stitching. Cross-stitching uses deformed tie bars epoxied or grouted into holes drilled at an angle through a crack or joint. The second, slot-stitching, uses deformed tie bars grouted into slots cut across a joint or crack. Each technique is beneficial for certain circumstances. Recommendations on where to use these methods are outlined in this special report.

Spray sealers can be a vital component in concrete pavement preservation (CPP) due to their role in extending the lifespan and maintaining the integrity of concrete surfaces. Key benefits include water resistance, pore blocking and surface densification, vapor permeability and application versatility.

BUMP GRINDING ON NEW CONSTRUCTION does not require the same equipment as commonly used on full surface grinding such as production grinding. Production grinding often necessitates heavier and larger machines to provide the power and weight needed to increase production. Bump grinding on new construction removes less material over smaller areas since it is corrective grinding, addressing localized roughness issues. As such, the weight and power of the equipment are not as critical. In addition, smaller
machines have a maneuverability advantage over larger equipment.

The comparative benefits of production grinding versus bump grinding are explored in this study for optimizing pavement performance and cost-efficiency. Diamond grinding is emphasized as a crucial technique for smoothing pavement surfaces, with production grinding covering the entire lane width and length to achieve superior results in ride quality, friction, sound reduction, fuel efficiency and aesthetics. While bump grinding—targeting only uneven areas—can improve ride quality and extend pavement life, production grinding often proves more economical and effective overall.

Calcium Sulfoaluminate (CSA) cement is an advanced cementitious material known for its fast setting, high early strength, low shrinkage, long-term durability and low carbon footprint. CSA is increasingly recognized as a vital component in modern construction due to its significant benefits that align with the industry’s evolving goals of sustainability, efficiency and innovation. CSA cement aligns with the construction industry’s goals by offering a sustainable alternative that meets the demands for efficiency and high performance. Its unique properties enable innovative applications in areas such as rapid repair, pushing the boundaries of traditional construction methods.

The Next Generation Concrete Surface (NGCS) is the quietest non-porous concrete pavement surface available. Developed by Purdue University in partnership with the Minnesota DOT (MNDOT), IGGA, American Concrete Pavement Association (ACPA) and Portland Cement Association (PCA), NGCS combines diamond grinding and longitudinal grooving, offering a smoother ride, increased safety and decreased noise.