http://www.iaeme.com/IJCIET/index.asp 37 editor@iaeme.com International Journal of Civil Engineering and Technology (IJCIET) Volume 8, Issue 7, July 2017, pp. 37–46, Article ID: IJCIET_08_07_005 Available online at http:// http://www.iaeme.com/ijciet/issues.asp?JType=IJCIET&VType=8&IType=7 ISSN Print: 0976-6308 and ISSN Online: 0976-6316 © IAEME Publication Scopus Indexed COMPARISON BETWEEN HAND AND MECHANICAL CAMPACTED CONCRETE Pranjal Singh PG, Student, Department of Civil Engineering, Sam Higginbottom University of Agriculture, Technology and Science, Allahabad, India Vikas Srivastava Associate Professor Department of Civil Engineering, Sam Higginbottam University of Agriculture, Technology and Science, Allahabad, India ABSTRACT Concrete is a composite material composed of fine and coarse aggregate bonded together with fluid cement that hardens over time. In the present study an experimental programme was carried out for comparison of manual (Hand) and mechanical compaction of concrete. Specimens of concrete of different proportions (1:2:4, 1:1.5:3 and 1:1.25:2.5) at different water cement ratio (0.46 and 0.48) was prepared. The concrete so prepared was tested for density in green state and for compressive strength in hardened state after 7 and 28 days of moist curing. It is observed that compressive strength and density of mechanically compacted concrete is more than that of manually compacted. Cite this Article: Pranjal Singh and Vikas Srivastava, Comparison between Hand and Mechanical Compacted Concrete, International Journal of Civil Engineering and Technology, 8(7), 2017, pp. 37–46. http://www.iaeme.com/IJCIET/issues.asp?JType=IJCIET&VType=8&IType=7 1. INTRODUCTION Concrete is most versatile and generalized material among the Construction materials used the Component of concrete is binder (mostly cement), aggregates (fine and Coarse), water and admixtures (if any). Components of concrete are taken in predetermined proportion as desired and required. Due to its least decay and easy making in situ as well as precast its popularity in using construction is increasing day by day. Compressive strength of concrete is major characteristics for its selection as construction material. Compressive strength of concrete is dependent on various factors. i.e. mix proportion, w/c. ratio, compaction, age of concrete, temperature, etc. However, compaction plays an important role to attain strength in concrete. For best utilization concrete needs to be compacted properly. Compaction is a process of removing the entrapped air from concrete. If it is not done, it will result into honeycombing and reduced strength. It is found from several studies that 1% air in the concrete approximately