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Anand, N.
- Study on Flexural Behavior of Concrete Beams with Glass Fiber Reinforced Polymer Bars as Internal Reinforcement
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Authors
G.V. Aravindan
1,
N. Anand
2
Affiliations
1 Structural Engineering, School of Civil Engineering, Karunya University, Coimbatore –641114, IN
2 School of Civil Engineering, Karunya University, Coimbatore-641114, IN
1 Structural Engineering, School of Civil Engineering, Karunya University, Coimbatore –641114, IN
2 School of Civil Engineering, Karunya University, Coimbatore-641114, IN
Source
International Journal of Civil Engineering Research, Vol 3, No 2 (2012), Pagination: 121-127Abstract
The objective of the current study is to investigate and evaluate the flexural behavior of reinforced concrete beams when using GFRP bars as internal reinforcement. The experimental program includes testing of five concrete beams in simply supported condition with steel and GFRP bars as internal reinforcements. The experimental results were evaluated and discussed. Also the ultimate flexural capacities were calculated by theoretical calculations. A comparison made between both experimental and theoretical results. This comparison indicated that the theoretical analysis gives results which are about an average of 51.85% lower than the experimental flexural capacity for GFRPreinforced beams. The mid span average deflection of GFRP beams at 55 kN mid-point load was 4.2 times that of steel beam for same load and this can be attributed to the low modulus of elasticity of GFRP bars.Keywords
GFRP, Flexure, Ultimate Load, Deflection, Cracks
References
- A. Nanni and S. Faza (2001)Design and construction of concrete reinforced with frp bars: an emerging technology ACI Dallas Convention, 2001
- Mohamed S. Issa* and S. M. Elzeiny (2011)Flexural behavior of cantilever concrete beams reinforced with glass fiber reinforced polymers (GFRP) bars Journal of Civil Engineering and Construction Technology Vol. 2(2), February 2011
- M. Pecce,G. Manfrediand E. Cosenza (2000) Response prediction of concrete beams reinforced with FRP bars Experimental Response and Code Models of GFRP RC beams in Bending 182/ Journal of Composites for Construction, November 2000
- KocaozS, Samaranayake V.A, Nanni A (2005) Tensile characterization of glass FRP bars , Composites part B vol. 36(2005) 127-134
- Influence of Mineral Admixture on Stress Strain Behaviour of Self Compacting Concrete under Elevated Temperature
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Authors
Affiliations
1 Karunya University, Coimbatore – 641114, Tamil Nadu, IN
2 SNS College of Technology, Coimbatore – 641035, Tamil Nadu, IN
3 Bannari Amman Institute of Technology, Sathyamangalam – 638401, Tamil Nadu, IN
1 Karunya University, Coimbatore – 641114, Tamil Nadu, IN
2 SNS College of Technology, Coimbatore – 641035, Tamil Nadu, IN
3 Bannari Amman Institute of Technology, Sathyamangalam – 638401, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 9, No 6 (2016), Pagination:Abstract
Background: The aim of the research is to study the effect of elevated temperature on different grades of Self Compacting Concrete (SCC), which is having excellent deformability and segregation resistance. Methodology: SCC specimens were cast using Silicafume (SF), Flyash (FA) and Metakaolin (MK) as mineral admixture, Master Glenium SKY as Superplasticizer (SP) and Glenium Stream as Viscosity Modifying Agent (VMA). After heating the specimens to 900ºC, samples were allowed to cool naturally in case of air cooling and water was sprayed on the specimens in case of water cooling. Compressive strength and Stress Strain behaviour of specimens were found. Findings: Compressive strength of SCC specimens with SF, FA and MK were found to decrease by 53.57%, 65.25% and 72.95% respectively for air cooling. In case of specimens cooled by water, the decrease in strength was found to be 78.67%, 81.19% and 83.01% respectively for specimens with SF, FA and MK. The higher powder content of SCC makes the permeability of concrete as low, thus makes SCC more susceptible to spalling under high temperature. The percentage reduction in compressive strength of M50 grade specimens with MK was found to be 72.95% and 83.01% for the specimens cooled by air and water respectively. Higher strength loss was observed for higher grade of SCC. It was found from the experimental investigations that, higher strain values were observed for the specimens cooled by water as compared to specimens cooled by air and reference specimen. Application: Fire safety design of structural elements.Keywords
Elevated Temperature, Flyash, Metakaolin, Self Compacting Concrete, Silica fume, Stress StrainFull Text