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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

Diamond Grinding to Reduce Tire-Pavement Noise in Concrete Pavements

CP Road Map MAP Brief 4-1

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Technical Info

Bridge, City/Municipal, Highway

Diamond Grinding

Friction/Safety, Smoothness, Tire/Pavement Noise

Diamond Grinding

MoDOT Tech Brief

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Technical Info

Bridge, City/Municipal, Highway

Diamond Grinding

Friction/Safety, Smoothness, Structural/Material Issues

The Little Book of Profiling

Basic information about measuring and interpreting road profiles

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Technical Info

Bridge, City/Municipal, Highway

Diamond Grinding

Smoothness

Does Diamond Grinding Affect the Structural Capacity and Service Life of Concrete Pavements?

Diamond grinding of concrete pavements actually increases the performance and service life of concrete pavements

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Airport/Airfield, Bridge, City/Municipal, Highway, Industrial, Race Track

Diamond Grinding

Structural/Material Issues

The Longevity and Performance of Diamond Ground Pavements

The results of this study show that CPR with diamond grinding is an effective means of extending service life of concrete pavements

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Technical Info

City/Municipal, Highway

Diamond Grinding

Friction/Safety, Smoothness, Structural/Material Issues

Concrete Repair Best Practices

MoDOT Report: A Series of Case Studies

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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

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RCC City of Roseville courtesy C Zollinger Cemex.jpg
Close-up Grinding Texture courtesy J Roberts.JPG
NGCS
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