Performance of Self Compacting Concrete with Partial Replacement of Coarse Aggregate with Recycled Coarse Aggregate
L. Rajitha1, M. Durga Rao2

1L. Rajitha, Post Graduate Student, Department of Civil Engineering, Gudlavalleru Engineering College, India.
2M. Durga Rao, Assistant Professor, Department of Civil Engineering, Gudlavalleru Engineering College, India.
Manuscript received on 27 June 2019 | Revised Manuscript received on 05 July 2019 | Manuscript published on 30 July 2019 | PP: 1773-1777 | Volume-8 Issue-9, July 2019 | Retrieval Number: I8265078919/19©BEIESP | DOI: 10.35940/ijitee.I8265.078919

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Abstract: Self Compacted Concrete (SCC) is an advanced approach for the purpose of placing of concrete.It is a concrete which does not require any external force,vibration or compaction and which is highly flowable, formwork is filled without any compaction and resistance to segregation. Workability tests for SCCin fresh state are Slump-flow, L-Box, J-Box,V-Box are carried out.By using recommended EFNARC guidelines the mix proportion of concrete was prepared for M40 grade concrete is 1:1.75:1.87.Water cement ratio of 0.35 is constant.In this paper Natural Coarse Aggregate(NCA) is partially replaced upto 50% with 10% interval by Recycled Coarse Aggregate(RCA).RCA is prepared by crushing of cubes which are taken from concrete technology lab. Construction and Demolition waste is also used as RCA. RCA is submerged in water for 24 hours before using for the concrete mix,this is because RCA absorbs more waterdue to adhered cement mortar to aggregate. The various tests and their results are shown in this paper.
Key words: Natural Coarse Aggregate (NCA), Recycled Coarse Aggregate (RCA), Self Compacting Concrete (SCC), Workability, Fresh Concrete, Hardened concrete.

Scope of the Article: High Performance Concrete