The IGGA offers the following fact sheets on pavement surfacing techniques and preservation/repair methods. Select the application(s), preservation/optimization technique(s) or pavement criteria/issue(s) to browse the fact sheets, or use the search function.
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Fact Sheets
Maximize Roadway Safety with Pavement Friction Data
Friction data is essential for safe vehicle operation, specifically steering, braking and acceleration. Insufficient friction elevates crash rates, particularly at curves and intersections. DOTs utilize this data to deploy friction remediation techniques precisely where crash risks are highest, improving roadway safety and reducing overall infrastructure costs.
Application(s)
Highway
Technique(s)
Diamond Grinding, Diamond Grooving
Issue(s)
Friction/Safety, Hydroplaning
Tips for Diamond Grinding Bridge Decks
The introduction of diamond-ground surfaces on bridge decks has created some challenges, however, that can be easily overcome following a few simple tips as outlined below. Specifications for diamond grinding bridge decks generally require grinding in the longitudinal direction over the entire length of the bridge and over the full deck width, extending to within two feet of the parapets. The grinding depth required is
usually a nominal ¼ inch and continuous across all joints. Clearly, it is imperative that expansion joints and bridge components under the joints be protected from damage lest the contractor be subject to financial penalties and repair costs. To accomplish this, contractors should follow these simple tips:
Application(s)
Bridge
Technique(s)
Diamond Grinding
Issue(s)
Smoothness
Diamond Grinding Machine Requirements for Bump Grinding Applications
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.
Application(s)
Airport/Airfield, Bridge, City/Municipal, Highway
Technique(s)
Diamond Grinding
Issue(s)
Smoothness
Strengthening Infrastructure with Spray Sealers
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.
Application(s)
Airport/Airfield, Bridge, Highway
Technique(s)
Concrete Pavement Preservation and Restoration
Issue(s)
Sustainability/Environmental
Stitching Concrete Pavement
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.
Application(s)
City/Municipal, Highway
Technique(s)
Cross/Slot Stitching, Joint and Crack Resealing
Issue(s)
Structural/Material Issues, Sustainability/Environmental