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
CPR Built to Last: A Progressive Concrete Pavement Preservation Strategy Improves City Streets in Minneapolis
Concrete Pavement Preservation (CPP) has long been used on deteriorated highways, but it also offers an alternative to asphalt overlays when rehabilitating city streets constructed of concrete. Techniques include: Slab stabilization, Full-depth repair (FDR), Partial-depth repair (PDR), Dowel bar retrofit (DBR), Cross-stitching longitudinal cracks or joints, Conventional diamond grinding (CDG) and Joint and crack resealing.
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Case Study
City/Municipal
Cross/Slot Stitching, Diamond Grinding, Dowel Bar Retrofit, Full & Partial Depth Repair, Joint and Crack Resealing, Slab Stabilization
Friction/Safety, Sustainability/Environmental
Quick Facts: Conventional Diamond Grinding
Conventional diamond grinding (CDG) removes a thin layer of hardened concrete surface using a self-propelled machine outfitted with a series of closely spaced diamond saw blades. CDG provides several benefits: Smooth riding surface , its safe , quiet, removes faulting at joints and cracks, does not significantly affect fatigue life, can extend pavement service life by decades, does not affect overhead clearances underneath bridges or signs, may be done in isolated areas as needed and during off-peak hours and its cost effective.
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Fact Sheet
Airport/Airfield, Bridge, City/Municipal, Highway, Industrial, Race Track
Diamond Grinding
Friction/Safety, Smoothness, Tire/Pavement Noise
Diamond Grinding: Production or bump grind: What is the better value?
The strategic use of diamond grinding to optimize pavement performance while minimizing costs is discussed in this study. It compares bump grinding—targeting only uneven areas—to continuous production grinding, which involves grinding the full lane width and length. Production grinding is highlighted for its superior outcomes in terms of ride quality, friction, sound, fuel emissions and aesthetics, often at a lower cost per square yard.
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Fact Sheet
Highway, Bridge, City/Municipal
Diamond Grinding
Smoothness
Conventional Diamond Grinding
Concrete pavements can achieve maximum longevity through diamond grinding. Conventional diamond grinding (CDG) is often used to create the smoothest and safest pavements available today. The best approach, both short- and long-term, is to achieve a balance between high friction level and low roughness and noise levels over the life of the pavement.
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Fact Sheet
Airport/Airfield, Bridge, City/Municipal, Highway, Industrial, Race Track
Diamond Grinding
Friction/Safety, Smoothness, Tire/Pavement Noise
CPP for City Streets: Smooth Pavements Last Longer!
Concrete pavements can achieve maximum longevity using strategic repair techniques. Today's urban streets have, in many cases, encountered 40 to 60 years of wear and tear. Concrete Pavement Preservation (CPP) is a series of engineered techniques to rehabilitate concrete pavement. It is a viable alternative to costly asphalt overlays. Basic CPP techniques include: slab stabilization, full depth repair, partial depth repair, dowel bar retrofit, cross-stitching longitudinal cracks or joints, diamond grinding, joint resealing and crack resealing.
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Fact Sheet
City/Municipal
Concrete Pavement Preservation and Restoration
Smoothness, Structural/Material Issues, Sustainability/Environmental
Rough Roads
Rough roads not only cause a bumpy ride, but cost motorists hundreds of dollars a year. Concrete pavement preservation (CPP) basic techniques include slab stabilization, full-depth repair (FDR), partial-depth repair (PDR), dowel bar retrofits (DBR), cross-stitching longitudinal cracks or joints, and joint and crack resealing.
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Fact Sheet
Bridge, Highway
Diamond Grinding
Smoothness, Sustainability/Environmental
