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June 2016, Volume 3, Issue 6 JETIR (ISSN-2349-5162)
JETIR1606013 Journal of Emerging Technologies and Innovative Research (JETIR) www.jetir.org 70
A PARAMETRIC STUDY ON PROPERTIES OF
SELF COMPACTING CONCRETE USING
RECYCLED COARSE AGGREGATE
Prof. Y.V.Akabari 1, Prof Dr. K.B. Parikh
2, Tejas H. Raviya
3
Department of Civil Engineering DIET-Rajkot
1 Assistant Professor, civil department, DIET- Rajkot, Gujarat, India
2 Head of Department, Applied Mechanics Department, Government Engg. College, Dahod, Gujarat, India
3 PG student, Masters of Structural Engineering, DIET- Rajkot, Gujarat, India
Abstract: This Report represents that the influence of varying amounts of recycled coarse aggregate (RCA) collect from a
demolished Cancer Hospital, Located at Rajkot, Gujarat, about 50 years old on the properties of self-compacting concrete (SCC)
and compared it with the results with normal vibrated concrete (NVC) containing 100% natural coarse aggregate (NCA).The
properties such as physical and mechanical properties of natural and recycled coarse aggregates are carried out. NCA is partially
replaced with RCA by an amount 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45% and 50%. The effect of RCA on the properties
of SCC in green state (e.g. Slump flow test, V-Funnel test and L-Box Test) and properties of concrete in hardened state (e.g.
compressive strength, flexural strength, and Split tensile Strength) are studied. The mix design was carried out for M-30 and M-35
grade of concrete. The experimental results shows that the compressive strength, flexural strength and split tensile strength is
higher than the use of Recycled coarse aggregate and the strength of SCC decreases with an increase rate of replacement
percentage of recycled aggregate (RA). The present study recommends SCC marginally achieves required compressive strength
up to 40% replacement of RCA.
Key words: Recycled coarse aggregate (RCA), Natural Coarse Aggregate (NCA), Self-Compacting concrete(SCC), Normal
vibrated concrete (NVC).
_____________________________________________________________________________________________
Introduction
The cement concrete has been very important and best building material for all types of industrial and civil works. It increase in
difficulty of construction and lack of skilled labors. In congested designed of steel fair as applied to concreting in congested area, and
it continuously decrease the strength of concrete. Concrete is a widely used construction material around the world. Numerous types
of concrete have been developed to enhance the different properties of concrete. When huge quantity of concrete of very high steel is
to be placed in a reinforced concrete member, it is very hard or difficult to ensure that the form work completely filled with concrete
that is, fully compacted without voids or honeycombs. Compaction by manually or mechanically vibrators is very hard in this
condition. The methods of compaction, vibrations produces delay and it increase the cost of the overall project. In case of underwater
concreting, the vibration or compaction are not possible, in that case self- compacting concrete(SCC) are adopted.
A. Recycled Coarse Aggregate
As per the title, the recycled aggregate collected from the demolished structure located at the Rajkot. After collecting, sorting out
according to its size and shape. The size of the used aggregate is 12.5 mm passing and 10mm retained. The hugh clinker to be crushed
by the jaw crusher . This Recycles aggregate replaced by the natural aggregate by the increment of 5% interval respectively.
Figure:1 Recycled Aggregate
June 2016, Volume 3, Issue 6 JETIR (ISSN-2349-5162)
JETIR1606013 Journal of Emerging Technologies and Innovative Research (JETIR) www.jetir.org 71
Table:1 Physical properties of RCA
Properties RCA
Abrasion Value 17.20%
Impact Value 27.665%
Crushing Value 34.10%
Specific gravity 2.61
water absorption 4.46%
June 2016, Volume 3, Issue 6 JETIR (ISSN-2349-5162)
JETIR1606013 Journal of Emerging Technologies and Innovative Research (JETIR) www.jetir.org 72
B. Mix Design of M-30 & M-35 Grade Concrete:
C. Fresh Properties of M-30 & M-35 Grade Concrete:
June 2016, Volume 3, Issue 6 JETIR (ISSN-2349-5162)
JETIR1606013 Journal of Emerging Technologies and Innovative Research (JETIR) www.jetir.org 73
1. Slump Flow Test
In M-30 grade concrete with the increment of RCA up to 5% to 50% with increment of 5% the value of slump
decreases in the rate of percentage 0.42, 0.85, 0.99, 2.44, 4.69, 4.85, 5.78, 3.78 and 5.81 respectively.
In M-35 grade concrete with the increment of RCA up to 5% to 50% with increment of 5% the value of slump
decreases in the rate of percentage 0.28, 0.97, 0.84, 2.41, 3.81, 3.94, 6.19, 7.13, 7.45 respectively
June 2016, Volume 3, Issue 6 JETIR (ISSN-2349-5162)
JETIR1606013 Journal of Emerging Technologies and Innovative Research (JETIR) www.jetir.org 74
2. V-Funnel Test
In M-30 grade concrete with the increment of RCA up to 5% to 50% with increment of 5% the value of V-Funnel
decreases in the rate of percentage 6.9%, 10.99%, 14.74, 16.49, 16.78, 21.36, 24.3% and 26.36 respectively.
In M-35 grade concrete with the increment of RCA up to 5% to 50% with increment of 5% the value of V-Funnel
decreases in the rate of percentage 5.68, 7.6, 11.7, 13.54, 14.43, 14.67, 15.45, 16.32, and 17.34 respectively.
3. L-Box Test
In M-30 grade concrete with the increment of RCA up to 5% to 50% with increment of 5% the value of L-B0x
decreases in the rate of percentage 2.3, 3.45, 4.6, 4.98, 5.45, 6.9, 9.2, 12.64, 12.64 respectively.
In M-35 grade concrete with the increment of RCA up to 5% to 50% with increment of 5% the value of L-Box
decreases in the rate of percentage 3, 3.54, 4.56, 6.82, 7.95, 9.21, 10.23, 13.64, 15.91 respectively.
June 2016, Volume 3, Issue 6 JETIR (ISSN-2349-5162)
JETIR1606013 Journal of Emerging Technologies and Innovative Research (JETIR) www.jetir.org 75
4. J-Ring Test
In M-30 grade concrete with the increment of RCA up to 5% to 50% with increment of 5% the value of J-Ring
decreases in the rate of percentage 0, 12.39, 14.7, 15.8, 21.1, 21.1, 22.3, 24.2, 25.6 respectively.
In M-35grade concrete with the increment of RCA up to 5% to 50% with increment of 5% the value of J-Ring
decreases in the rate of percentage 0, 5.87, 16.33, 17.65, 21.43, 24.49, 27.89, 36.73, 40.82 respectively.
D. Hardened Properties Of Concrete
1. Compressive Strength Of M-30 Grade Concrete
In M-30 Grade concrete. Replacement adopted 5% to 50% of RCA with increment of 5%, at the 5% strength
decreases 0.51% and At the 50% strength decreases 19.82%.
June 2016, Volume 3, Issue 6 JETIR (ISSN-2349-5162)
JETIR1606013 Journal of Emerging Technologies and Innovative Research (JETIR) www.jetir.org 76
2. Flexural Strength Of M-30 Grade Concrete
In M-30 grade concrete Replacement of RCA up to 55 to 50% with increment of 5%, at the 5% flexural strength
decreases 2.54% and at the 50% flexural strength decreases 42.82%.
3. Split Tensile Strength Of M-30 Grade Concrete
In M-30 grade concrete Replacement of RCA up to 55 to 50% with increment of 5%, at the 5% split tensile strength
decreases 2.18% and at the 50% flexural strength decreases 40.38%.
June 2016, Volume 3, Issue 6 JETIR (ISSN-2349-5162)
JETIR1606013 Journal of Emerging Technologies and Innovative Research (JETIR) www.jetir.org 77
4. Compressive Strength Of M-35 Grade Concrete
In M-35 Grade concrete. Replacement adopted 5% to 50% of RCA wit increment of 5%, at the 5% strength
decreases 0.64% and at the 50% strength decreases 18.17%.
5. Flexural Strength Of M-35 Grade Concrete
In M-35 grade concrete Replacement of RCA up to 55 to 50% with increment of 5%, at the 5% flexural strength
decreases 1.11% and at the 50% flexural strength decreases 37.17%.
June 2016, Volume 3, Issue 6 JETIR (ISSN-2349-5162)
JETIR1606013 Journal of Emerging Technologies and Innovative Research (JETIR) www.jetir.org 78
6. Split Tensile Strength Of M-35 Grade Concrete
In M-35 grade concrete Replacement of RCA up to 55 to 50% with increment of 5%, at the 5% split tensile strength
decreases 1.01%% and at the 50% flexural strength decreases 39.90%.
E. Durability Results Of M-30 & M-35 Grade Concrete
June 2016, Volume 3, Issue 6 JETIR (ISSN-2349-5162)
JETIR1606013 Journal of Emerging Technologies and Innovative Research (JETIR) www.jetir.org 79
F. Conclusion
From the study of SCC with replacement of RCA with NCA up to 50% with the increment of 5%, the concrete satisfy the fresh
properties according to EFNARC Guideline including slump, L-Box, V-Funnel and J-Ring.
It is observed that, the concrete fulfilled the requirement of guideline, But with the increment of RCA the value of fresh properties
decrease respectively.
In the slump flow test, replacement of RCA up to 5% to 50% with increment of 5%, the value of flow decreases 0% to 9%
respectively.
In L-Box test replacement up to 5% to 50% with increment of 5% there is maximum increment in Ratio of H2/H1 is 15.15%
June 2016, Volume 3, Issue 6 JETIR (ISSN-2349-5162)
JETIR1606013 Journal of Emerging Technologies and Innovative Research (JETIR) www.jetir.org 80
Results of J-ring shows that for same replacement there is increasing the height upto 40.89% and in V-funnel with the same
replacement there is increase time up to 26.36%.
The study shows that the Hardened properties decrease with increment of replacement of RCA.
Upto replacement of 5% to 50% with increment of 5%, the compressive strength decrease 3% to 1 9.71% respectively.
From the result it is observed that up to replacement of 5% to 50% with increment of 5%, the split tensile strength decrease 0.95%
to 43% respectively.
In flexural strength, up to replacement of 5% to 50% with increment of 5%, the strength decreases 0.80% to 29% respectively.
In the durability purpose, comparison between HCL, H2SO4 and MgSO4 the highest strength decreases in MgSO4.
From the above study of durability, the maximum strength decreases in HCL, H2SO4 and MgSO4 are 21%, 24% and 37%
respectively.
G. References
[1] Adverse effect of the mass substitution of natural aggregates by air-dried recycled concrete aggregates on the self-compacting
ability of concrete: evidence and analysis through an example (Oussama Kebaïli, Michel Mouret, Nourredine Arabi, Franck
Cassagnabere, ELSEVIER-2015)
[2] Failure characteristics of self-compacting concretes made with recycled aggregates (Mehmet
[3] Gesoglu, Erhan Güneyisi, Hatice oznuroz, Ihsan Taha, Mehmet Taner Yasemin, and ELSEVIER-2015)
[4] Mix Design Procedure for Self Compacting Concrete (Krishna Murthy.N, Narasimha Rao A.V, Ramana Reddy I .Vand
Vijayasekhar, Reddy .M, IOSR-2012)
[5] Properties of self-compacting concrete using recycled coarse aggregate (K C Panda and P K Bal, ELSEVIER-2013)
[6] Properties of self-compacting concrete prepared with coarse and fine recycled concrete aggregates (S.C. Kou, C.S. Poon,
ELSEVIER-2009)
[7] Performance of recycled aggregate concrete based on a new concrete recycling technology (Somayeh Lotfi, Manuel Eggimann,
Eckhard Wagner, Radosław Mroz, Jan Deja, and ELSEVIER-2015)
[8] Permeability properties of self-compacting concrete with coarse recycled aggregates (L.A. Pereira-de-Oliveira, M.C.S.
Nepomuceno, J.P. Castro-Gomes, M.F.C. Vila, ElSEVIER-2014)
[9] Properties of self-compacting concrete prepare with coarse recycled concrete aggregate (Zoran JureGrdic, Gordana A. Toplicic-
Curcic, Iva M. Despotovic, Nenad S. Ristic, and ELSEVIER-2010)
[10] Properties of recycled concrete aggregate under different curing conditions (Ahmed Shaban Abdel-Hay, HBRC-2015)
[11] Self-compacting concrete with recycled aggregate: A solution for sustainable development (Prashant O. Modani and Vinod M
Mohitkar, IJCSE-2014)
[12] M.S.Shetty, Concrete Technology
[13] A.M.Navil, Concrete Technology
[14] EFNARC Guideline
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