Experimental Study on Workability of Self-Compaction Concrete

International Journal of Research and Scientific Innovation (IJRSI) | Volume VII, Issue IV, April 2020 | ISSN 2321–2705

Experimental Study on Workability of Self-Compaction Concrete

V.Rajesh¹, V. Nikhila², K. Shiva Prasad³, B. Naveen^4
1Assistant Professor, Department of Civil engineering, JNTUH University/ St Marin’s Engineering College, Hyderabad, India
^2,3,4JNTU Students, Department of Civil engineering, JNTUH University/St Marin’s Engineering College, Hyderabad, India

Abstract:- A self-compaction concrete (SCC) is a special concrete developed to easily flow and pass through reinforcement and fill the formwork without any external force. And saves time, energy and cost of construction.In this study we have conducted test on workability of SCC and various components of concrete matrix such as cement, coarse aggregate, fine aggregate, water and chemical admixtures and found appropriate results of our project. SCC is more efficient in flow ability and fills the formwork without any external forces and provides flexibility to design and cast a structure with different shapes.This project study contributes to the comparing and understanding of properties of nominal a self-compaction concrete with various mix proportions.We have conducted various workability tests like Flow table test, slump cone test, J-ring test, L-Box test, U-Box test, V-funnel test in our laboratory to determine the difference between the nominal and c self-compaction concrete.We have also conducted SEM analysis on cement and Nano silica particles used in the project.

Keywords — Self-constricting, Matrix, Mix proportion, SEM analysis, Compaction.

I. INTRODUCTION

Self-compacting concrete (SCC) is an advanced concrete that does not require vibration for placing and compaction. It is able to flow under its own weight, completely filling formwork and achieving full compaction, even in the presence of congested reinforcement. The hardened concrete is dense, homogeneous and has the same engineering properties and durability as old-style vibrated concrete. The segregation of vibrating equipment improves the environment on and near construction and precast sites where concrete is being placed, reducing the exposure of workers to noise and vibration. SCC is still not widely used in India in spite of its several advantages including discount in labor and fast track construction etc. This is because of lack of sufficient data and evidence on SCC made of materials available in the different parts of the country and hence insufficient certainty of engineers in producing this material. India devours overflowing supply of fly ash, with its sources well distributed across the country. SCC generally holds a high powder content which keeps the concrete cohesive with high flow ability. This high powder satisfied is required to maintain a sufficient yield value of the fresh mix and cement cannot be the only powder material in SCC.

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