Comparative evaluation of steel mesh, steel fibre and high-performance polypropylene fibre reinforced shotcrete in panel test

A comparative study on the flexural performance of plasma treated polypropylene fiber reinforced cementitious composites

“…In some cases these fibers are being employed as an additional fiber in hybrid fiber reinforced composites (Filho and Sanjuán, 1999;Sun et al, 2001;Cengiz and Turanli, 2004). Their performance in flexural strength and toughness improvement were mostly claimed as limited, since polypropylene shows poor adhesion with cementitious matrix due to their hydrophobic and smooth surfaces (Lee et al, 1997;Singh et al, 2004).…”

Microscopic, physical and mechanical analysis of polypropylene fiber reinforced concrete

“…Polypropylene fiber (PF) is a popular material used in the concrete industry, and many researchers have studied the mechanical properties of PF reinforced concrete (PFRC). Researchers have reported that PF can improve the flexural ductility [1], compressive strength [2], toughness [1], split tensile strength [2,3], spalling resistance [4], modulus of rupture [2], and long-term durability of concrete [5]. Additionally, PF reduces concrete's plastic shrinkage [6,7], improves permeability, and is able to release the vapor pressure of concrete to reduce the spalling distress especially at high temperatures due to the melted PF in the concrete pores [8][9][10].…”

Characterisation of macro polyolefin fibre reinforcement in concrete through round determinate panel test

“…Concrete has very high compressive strength, but it is weak in tensile strength and toughness. In order to improve its tensile strength and toughness, steel reinforcement [1] and various fibres such as steel fibres [2], synthetic fibres [3], glass fibres [4] and natural fibres [5] are often used to reinforce concrete.…”

“…The specimen toughness is assessed in terms of the energy absorbed in loading the plate at some selected values of central deflection of the panel. Its panelbased performance assessment is desirable as panels fail through a combination of stress actions that reflect behaviour of concrete more closely than other mechanical tests in the laboratory [1]. Moreover, based on the standards of beam test, such as ASTM C1609 [19] and BS EN 14651 [21], the cross section of beam is 150 mm  150 mm, which is too small to evenly disperse long fibres (such as 60 mm long fibres) in the mould.…”