CEMENT CONCRETE ROADS

When the wearing surface of the road consists of cement concrete slab, it is called a cement concrete road. These roads are said to be all-weather roads. These are very costly. These roads have a pleasing appearance, long life, and excellent riding surface. Cement concrete roads are not much popular in India due to their high internal cost through these are much superior to other types of roads.

The concrete road slab performs the function of base course as wearing surface. The thickness of road slab varies between 15 to 20 cm depending upon the traffic load. For much heavy traffic, loads reinforcement may be provided in the concrete road slab.

Before laying the concrete slab, the subgrade is prepared as usual. Then the cement concrete mix is laid in alternate panels, which are marked before laying the concrete. The panels may keep 2.5 m to 3.5 m square. The completed surface of the concrete slab is cured for 10 to 15 days before it is opened to traffic.