Crazing Concrete Surfaces

Crazing is the development of a network of fine random cracks or fissures on the surface of concrete or mortar caused by shrinkage of the surface layer.  Full text…

Cracking Concrete Surfaces

Concrete, like other construction materials, contracts and expands with changes in moisture and temperature, and deflects depending on load and support conditions.  Read more…

Scaling Concrete Surfaces

Scaling is local flaking or peeling of a finished surface of hardened concrete as a result of exposure to freezing and thawing. Generally, it starts as localized small patches which later may merge and extend to expose large areas.  Read more…

Dusting Concrete Surfaces

Formation of loose powder resulting from disintegration of surface of hardened concrete is called dusting or chalking.  Read more…

Loss of Air Content In Pumped Concrete

Increasingly, specifiers are requiring concrete to be tested for air content at the discharge end of concrete pumps at the point of placement in the concrete structure. In some cases it is observed that air contents are much lower than that in samples tested at discharge from the truck chute.  Read more…


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