Effects of fibre hybridization on multiple cracking potential of cement-based composites under flexural loading

Strength Modeling of Mechanical Strength of Polyolefin Fiber Reinforced Cementitious Composites

“…Many types of new fibers from different origin at variable strength and dimensions have recently been commercialized in the construction market [15], viz., fiber materials made of steel, glass and synthetic materials (made of acrylic, polyvinyl alcohol, polyolefin, polyethylene and polypropylene) [24,[36][37][38]. Polyolefin fiber is a kind of chemical synthetic fiber, which can equably disperse in concrete and has high corrosion resistance to acid, alkali and salt, so it has been incrementally applied in engineering [39].…”

“…In components such as slabs and pavements, fibers are added to control cracking induced by humidity or temperature variations and in these applications they work as secondary reinforcement [17]. The selection of appropriate fiber type for a certain project may sometimes be confusing [15] as the performance of FRCC depends on several factors like fiber properties (e.g. fiber strength), fiber volume content and matrix properties (e.g.…”

“…Cavdar (2012) [12] used polypropylene (PP), carbon (CF), glass (GF) and polyvinyl alcohol (PVA) fibers in five different ratios 0%, 0.5%, 1%, 1.5% and 2% by volume and determine the flexural strength and ductility properties of cementitious composites (mortar) under high temperature. Some authors (like Ahmed et al, 2007) [13] have used 2.5% fibers but it is advisable to restrict the fiber volume to 2% to avoid workability problems during preparation of fibrous mortar, and some adjustments in matrix design is needed [14,15]. PVA fibers have replaced asbestos fibers in cement boards and are widely used in engineered cementitious composites (ECC) such as road and deck slab outlays, tunnel lining, and secondary slabs, and other applications using shotcreting methods [16].…”

Deflection Ductility of Slabs Made of Hybrid Mesh-And-Fibre-Reinforced Cementbased Composite

“…The maximum PO-Vf (%) adopted in this study is 2.5%, because the author experienced difficulties while mixing PO-Vf (%) of more than 2.5% in plain cement mortar, and, to further avoid workability related issues, PO-Vf (%) has been restricted to 2.5% for experimental purposes [10][11][12][13]24].…”

“…The deflection ductility at the first crack and the ultimate load bearable in cement-based composites depends upon element thickness, type of reinforcement (mesh and/ or fibres), and the volume fraction (percentage) of mesh and fibres [1], [10][11][12]. Combining mesh and fibres in thin cementitious composites will result in improved flexural ductility performance [1], [10][11][12], [18], [24][25]. Since a detailed study is needed to understand the flexural load-deflection behavior of thin slab elements reinforced with mesh and fibres and deflection ductility behavior [10][11][12], [18], the present study has made an attempt to combine steel mesh and polyolefin fibres as reinforcement in hybrid form and study its flexural deflection ductility.…”