Behaviour of Reinforced High Performance Concrete Filled UPVC Columns

Authors:

Saraswati Setia (National Institute of Technology, Kurukshetra)

Keywords: UPVC, flyash, short columns, L/D ratio

Abstract:

Steel is used for high rise buildings, but it is expensive proposition for low cost housing. Products like Unplasticised Poly Vinyl Chloride (UPVC) tubes can be used for low cost housing because of there low self weight and economy they affect. PVC pipes are readily available for piping work; its use is intended to be studied for its effectiveness in being used as columns. This type of columns is generally referred to as Concrete Filled UPVC Tube (CFUT).Local pipes which are 40% cheaper as compared to ISI pipes are also tested for their behaviour in this study. Fly ash is used as replacement material to cement (OPC grade 43) in order to reduce the cost of concrete. A total of 24 samples of Concrete Filled UPVC Tubes (CFUTs) were cast using M30 and M40 grade of concrete with 20% and 30% replacement of fly ash. The UPVC tubes of 190mm in diameter and 750mm of length short columns with L/D 3.93 and 3.94 and D/t is between 28 and 31. Parameters studied were the effects of fly ash on the strength of concrete when filled in UPVC tubes of same diameter with a clear cover of 40mm.

References:

1. Artiomas Kuranovas,Douglas Goode, Audronis Kazimieras Kvedaras. Shantong Zhong: Load-Bearing Capacity of Concrete-filled Steel Columns: Journal of Civil Engineering and Management, 2009.

2. Chawla. Krishna.K, Composite Materials science and Engineering 2nd edition”, Dept. of Materials & Mechanical Engineering, University of Alabama at Birmingham, U.S.A, 1988.

3. Department of Metallurgical and Materials Engineering, N.I.T, Karnataka (India) 2009.

4. F.W. Lu, S.P. Li, Guojun Sun, “A study on the behaviour of eccentrically compressed square concrete-filled Steel tube columns” Department of Engineering Mechanics, Shanghai Jiao Tong University, Shanghai, 200240, China, 2006.

5. Gian Piero Lignola, Andrea Prota, Gaetano Manfredi, Edoardo Cosenza: Unified theory for confinement of RC solid and Steel hollow circular columns: Department of Structural Engineering, University of Naples “Federico II” Via Claudio 21, Naples I-80125, Italy.

6. Georgios Giakoumelis, Dennis Lam: “Axial capacity of circular CFT columns” Department of civil and environment engineering Imperial college, London, 2003.

7. Hui Lu, Lin-Hai Han, Xiao-Ling Zhao: Analytical behaviour of circular concrete-filled thin-walled steel tubes subjected to bending: Thin-Walled Structures 47 (2009) 346-358.

8. Houssam Toutanji and Mohamed saafi: Durability studies on concrete columns encased in PVC-FRP composite tubes; University of Alabama in Huntsville, USA, 2001.

9. IS: 383 Fine aggregate and Coarse Aggregate: UDC 691-322.

10. IS 456. 2000, Plain And Reinforced Concrete -Code of Practice ( Fourth Revision).

11. Materials”, Dept. of Mechanical and Aerospace Engineering University of Delaware, Dept, of civil engineering Ohio state university, USA 1986.

12. Manojkumar V. Chitawadagi, Mattur C. Narasimhan, S.M. Kulkarni “Axial strength of circular concrete-filled steel tube columns_DOE approach.

13. P.K. Gupta, S.M Sarda and M.S Kumar: Experimental and computational study of concrete filled steel tubular columns under axial loads: Journal of construction steel Research 63(2007) 182-193.

14. R. Eid, A.N. Dancygier: Confinement effectiveness in circular concrete columns: Engineering Structures 2S (2006) 1885- 1896.

15. Srinivasan. K,“Composite Materials Production, Properties, testing and Applications”.

16. Vinson, J.R and Sierakowski, R.L “The behavior of structures composed of composite”.

17. Walter Luiz Andrade de Oliveira, Silvana De Nardin . Ana Lucia H. de Cresce El Debs, Mounir Khalil El Debs: Evaluation of passive confinement in CFT columns. Journal of (Constructional Steel Research 66 (2010)487_495.

18. Zhi-wu Yu. Fa-xing Ding, C.S. CAI, “Experimental behaviour of circular concrete-filled steel tube stub columns,” College of Civil Architectural Engineering, Central South University, Changsha, Hunan Province 410075, PR China, Department of Civil and Environmental Engineering, Louisiana State University, Baton Rouge, USA, 2005.