STUDY THE EFFECT OG GRADING ON HYDRAULIC CHARACTERISTICS OF GSB MIX (KEY IJP************998)

• Prashant Kumar,Shivani

Abstract

Good drainage is essential for the operation of the road. Excessive moisture in the substrate, sub-base and sub-base can cause premature problems and premature failure of the coating. Therefore, the cost of road maintenance and the cost of improving water quality should be compared when choosing an appropriate repair strategy. Therefore, it is necessary to analyze the effects of different types of waterproofing on road properties. A granular base (GSB) is placed near the surface of the foundation and below the bearing layer in the structure for drainage and load transfer into the layer.In India, pavement design guidelines recommend GSB thickness based on subgrade performance and design traffic conditions. By examining the permeability of the GSB mixture, it is necessary to understand the importance of the fluidity of the GSB mixture in road construction. Current guidelines in India recommend the use of natural sand, calcareous soil, gravel, crushed stone or a combination of these in GSB layers. In special cases, the use of crushed slag, crushed stone, bricks and kankar will be allowed. While the above connections may meet design standards, it is unclear whether they will meet the minimum AASTO code requirement of 300 mday.