DefinePK

Abstract

In India, National highways (NH) covers 1,00,087 km and other types of highways (state highways, major district roads, other district roads and village roads) covers 53,82,495 km. Sand is heavily used both in flexible and rigid pavements, created an increase in the demand of sand. As per National Highway Development Programme (NHDP), it is estimated to lay 30km road per day now. Presently, 71,772 km network of National Highways comprises only 1.7% of the total length of roads, but carries over 40% of the total traffic around the country both in length and breadth. Considering the target growth rate of about 9%, it is estimated that the total target National Highway network of about 85,000 km may be considered as reasonable for the 12th Five Year Plan (2012 – 2017), for the region development which are not connected by National Highway. During fifties concrete paver blocks were introduced due to scarcity of building materials in Holland. Paving blocks are in rectangular shape and bricks size. Paving blocks under non traffic category utilizes in Building premises, monument premises, landscapes, public garden/parks, domestic drives, paths and patios, embankment slopes, sand stabilization area, etc., Testing of compressive strength is classified into three series. The compressive strength results of quarry dust concrete (cubes) obtained in the first series, for normal cube it is observed as 28.45 N/mm2. In the second series, the change in grades up to 40 percent replacement increases the compressive strength. As the increase in age of concrete the compressive strength increase up to 30 percent replacement of quarry dust as a fine aggregate in the third series.