Slab Warping or Unevenness
If you have slab warping or unevenness, you need to perform:
Conventional Diamond Grinding (CDG)
Conventional diamond grinding (CDG) is often used to create the smoothest and safest pavements available today. It is
appropriate for both new construction and existing pavement and can be performed at any time during a pavement’s life.
Diamond grinding removes a thin layer of the hardened concrete surface using a self-propelled machine outfitted with a series of closely spaced diamond saw blades mounted on a rotating shaft. Unlike diamond-impregnated carbide bits, which use impact to chip away the concrete surface, CDG blades use abrasion to gently remove the surface layer without the risk of introducing microcracking of the aggregates. After diamond grinding, the pavement texture consists of grooves and lands, with the grooves lying beneath the pavement interface.
CDG has been in use since the 1960s, with nearly 20 million square yards of pavement diamond ground each year in the United States alone. In addition to using CDG to improve the performance of existing, in-service pavements, several state Departments of Transportation specify diamond ground surfaces as the final surface on newly placed portland cement concrete pavement (PCCP).
Next Generation Concrete Surface (NGCS)
Next Generation Concrete Surface (NGCS) is the quietest non-porous concrete pavement surface available. NGCS is a hybrid texture that resembles a combination of diamond grinding and longitudinal grooving. It consists of a uniform land profile design with essentially an all-negative texture. Despite its flatter, smoother riding surface compared to traditional portland cement concrete pavement (PCCP), the NGCS still possesses and maintains reliable microtexture (friction) when constructed with quality aggregates. The longitudinal grooves provide substantial macrotexure and increase resistance to hydroplaning by providing escape channels that allow water to move out of the tire contact patch area.
Resources
Concrete Repair Best Practices
Concrete pavement restoration (CPR) techniques have gained greater national significance as DOT agencies attempt to further extend infrastructure service lives prior to required major rehabilitation or reconstruction. This report consolidates best practice case studies for six CPR techniques: cross stitching, dowel bar retrofit, diamond grinding, full depth repair, partial depth repair and slab stabilization.
Resource Type:
Resource Sections:
Resource Techniques:
Resource Issues:
Technical Info
City/Municipal, Highway
Concrete Pavement Preservation and Restoration, Diamond Grinding, Dowel Bar Retrofit, Full & Partial Depth Repair, Joint and Crack Resealing
Structural/Material Issues
FHWA Pavement Preservation Checklist Series: Diamond Grinding
This checklist for diamond grinding of portland cement concrete is one in a series created to guide state and local highway preservation/maintenance and inspection staff on the use of innovative pavement preservation techniques. FHWA uses its partnerships with different pavement preservation organizations including American Association of State Highway and Transportation Officials, and state and local transportation agencies to promote pavement preservation.
Resource Type:
Resource Sections:
Resource Techniques:
Resource Issues:
Technical Info
Airport/Airfield, Bridge, City/Municipal, Highway, Industrial, Race Track
Diamond Grinding
Friction/Safety, Smoothness, Structural/Material Issues, Tire/Pavement Noise
The Little Book of Profiling
The Little Book of Profiling covers three basic questions: How do profilers work, what can you do with their measurements and what can you do to reduce errors? The material is targeted at users. The intent is to make the material no more technical than is needed to describe what the measurers mean that you can get from a profiler.
Resource Type:
Resource Sections:
Resource Techniques:
Resource Issues:
Technical Info
Bridge, City/Municipal, Highway
Diamond Grinding
Smoothness
Evaluation - Effect of Diamond Grinding & Grooving on Surface Characteristics of Concrete Pavements
This paper evaluates the effect of diamond grinding and grooving on various surface characteristics of concrete pavements. Measurements for texture, friction, and smoothness have been collected on two continuously reinforced concrete pavements at the Virginia Smart Road. One of the sections was diamond grinding and longitudinally diamond grooving while the other section was transversely tinned.
Resource Type:
Resource Sections:
Resource Techniques:
Resource Issues:
Technical Info
City/Municipal, Highway
Diamond Grinding, Diamond Grooving
Friction/Safety, Smoothness, Tire/Pavement Noise
The Longevity and Performance of Diamond Ground Pavements
Diamond grinding is a concrete pavement restoration (CPR) technique that provides a smooth riding surface with the desirable friction characteristics on concrete pavements that have developed excessive roughness. Diamond grinding offers numerous advantages over other rehabilitation alternatives.
Resource Type:
Resource Sections:
Resource Techniques:
Resource Issues:
Technical Info
City/Municipal, Highway
Diamond Grinding
Friction/Safety, Smoothness, Structural/Material Issues
Effects of Diamond Grinding on Airfield Concrete Pavements
Diamond grinding involves the use of a series of diamond saw blades and spacers stacked together to cut a pavement surface to a shallow depth, giving it a “corduroy” appearance. It has been used for decades on civilian and military airfield concrete pavements to smooth surfaces, correct surface elevation, remediate surface distresses, increase friction, and ultimately extend service life.
Resource Type:
Resource Sections:
Resource Techniques:
Resource Issues:
Technical
Airport/Airfield
Diamond Grinding
Friction/Safety, Structural/Material Issues
