The current practices of the construction of cement concrete road for highways in India require a layer of dry lean concrete (DLC) as a base course over which pavement quality concrete slabs rest. It is one of the common and popular cement treated sub-base/base for concrete pavements.

Dry Lean Concrete (DLC) is an important part of modern rigid pavement. It is a plain concrete with a large ratio of aggregate to cement than conventional concrete and generally used as a base/sub base of rigid pavement.

The main advantages of using DLC as a base layer include the provision of a uniform and strong support, high resistance to deformation, greater efficiency in the load transfer in the joints, adequate fixation of the formwork and proper positioning of the boom cradles to semi-construction – mechanized construction...