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EXPERIMENTAL STUDIES TO DETERMINE THE FLEXURAL AND CRACKING PERFORMANCE OF HYBRID STEEL-MESH AND POLYOLEFIN-FIBER REINFORCED CEMENTITIOUS COMPOSITES



Author(s): P.B. Sakthivel, A. Ravichandran and N. Alagumurthi
Book Title: Seventh International RILEM Conference on High Performance Fiber Reinforced Cement Composites (HPFRCC7)
Editor: H.W. Reinhardt, G.J. Parra-Montesinos, H. Garrecht
ISBN: 978-2-35158-145-2
e-ISBN: 978-2-35158-146-9
Publisher: RILEM Publications SARL
Publication year: 2015
Pages: 343-350
Total Pages: 8
Language: English


Abstract: In this experimental study, the flexural and cracking performance of Hybrid Steel Mesh and Polyolefin Fiber Reinforced Cementitious Composites (HSMPOFRCC) (test specimens) of slab size 700 mm × 200 mm × 25 mm are investigated under four point loading, and the results are compared with Steel Mesh Reinforced Cementitious Composites (SMRCC) (control specimens). Taguchi's Experimental Design technique was employed to optimize the number of experiments, and the standard L18 (6^1 3^1) orthogonal array was used. On conducting the flexural tests for HSMPOFRCC with several hybrid reinforcing mix combinations of steel mesh (SM - 3, 4, 5 layers) and polyolefin fibers (0-2.5% of volume of specimens, with 0.5% interval), it was found that increase in fiber percentage leads to increase in first cracking strength and ultimate flexural load carrying capacity upto an optimum point. HSMPOFRCC have higher flexural strength than SMRCC. Multiple cracking behavior has been observed in the slab specimens subjected to flexural loading which demonstrate the strain hardening behavior of HSMPOFRCC. The Signal-to-Noise Ratios show higher flexural performance for slabs with hybrid reinforcing mix of 5 mesh layers and polyolefin fibers of 1, 1.5% and 2% in terms of residual flexural strength with higher level of deflection ductility. Statistical models are developed to predict the flexural strength of HSMPOFRCC.


Online publication: 2015
Publication Type: full_text
Public price (Euros): 0.00


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