International Journal of Scientific & Engineering Research, Volume 4, Issue 11, November-2013 1126 ISSN 2229-5518 IJSER © 2013 http://www.ijser.org A STUDY ON THE USE OF CRUSHED STONE AGGREGATE AND CRUSHER DUST MIXES IN FLEXIBLE PAVEMENTS *P.V.V. Satyanarayana, **R.Prem Teja, **T.Harshanandan, **K.Lewis Chandra *Professor, **Post Graduate students, Dept. of Civil Engineering, Andhra University Abstract: An excellent road network is an asset to any developing country and India in particular, as it is one of the largest countries in the world and a perfect road network would complement its development. Flexible pavements are the most commonly used form of pavements and have four component layers namely Sub-grade, Sub-base and base and surface courses, which are made up of materials like natural soils, sand, morrum etc., are proved to be costly in terms of construction as well as maintenance. The performance of plastic fines and their sticky characteristics in natural soils hampered the performance of the pavement. To reduce the impact of failures alternative materials are to be studied. In this an attempt is made by using Crushed Stone Aggregate and Crusher Dust as road component materials. Gradation mixes were prepared to meet the specifications of MORTH and subjected for various geo-technical characterizations such as gradation, compaction, strength etc. The strength characteristics of compacted crusher dust and Crushed Stone mixes have been evaluated through a series of CBR tests by varying the crusher dust and sand contents from 60% to 10%. In addition to that the suitability of compacted crusher dust as a road base and sub-base materials have been verified in accordance with MORTH specifications and identified that 20-30% in place of sand can satisfy the materials used as sub-base and base courses. KEY WORDS: Crusher Dust, Crushed Stone Aggregate, CBR, Void Ratio. 1.0 INTRODUCTION: The performance of a pavement reflects the proper functioning of the consecutive component layers of a given pavement. The design period, life of the pavement, durability and maintenance cost can be explained by the selection of materials and their characterization. The IJSER