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D-Cracking Concrete Problem on a Concrete Driveway

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D Cracking Stage 3D Cracking Stage 2D Cracking Step 1

D-Cracking (Deterioration of the Aggregate Within the Concrete)

Problem: D-Cracking is the result of placing the concrete slab over a surface that has poor drainage capability. The continuous humidity combined with the freeze/thaw cycles breaks down the components of the concrete slab from the bottom up. D-Cracking is usually found near the edge of the concrete where it meets with the lawn, landscape or street curb. It shows up initially as a webbing of small spidery cracks on the surface of the concrete. It can look like lace or veins which are more obvious when humidity is present.  It usually starts near a joint or crack in the slab.  This webbing spreads and the cracks will start to open and separate. Eventually the concrete will crumble to gravel in the area affected by D-Cracking. Patching the damaged areas is only a temporary solution. Eventually the complete slab will turn into gravel.  This problem happens when there is not have enough gravel base for the driveway or in areas where water is trapped by the concrete and does not have adequate drainage. 

Solution: There is no product available today that will stop the problem completely as it begins at the bottom of the concrete and works upward. Eventually the section of slab will need to be replaced. However, this deterioration process has been proven to slow down when the concrete is treated with SealGreen Penetrating Concrete Sealer


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