Analytical model for the compressive stress–strain behavior of PVA-FRC

Self-repairing polyethylene fiber-reinforced-concrete with bacillus subtilis bacteria a review

“…iii) While bacterial self-repairing of M20 grade concrete with 0.4% PE fiber increases the fc' at 28 days by 13.2% [71], bacterial selfrepairing of M20 grade concrete increases the fc' at 28 days by 16.2% (greater than 13.2%) [62]. This goes with the conclusion that fibers' addition has little effect before cracking and affect the concrete compressive strength with ± 4% [16,129]. iv) There is some recovering effect on the flexure strength of FRC self-repaired with B. subtilis JC3 after 28 days depending on the width of the pre-loading cracks (80% until 100 µm and recovered less by tendency from 39 to 52 % for bigger cracks 150 µm to 400 µm) [74].…”

“…The fiber volume fraction Vf; Generally, the fiber content preferred to be less than 2% macro-synthetic fiber and 3% for microsynthetic fiber to make sure an adequate balance between obtaining optimum strength and workability benefit [9,16,17]. The higher fiber dosage could cause an aggregated conveyor belt on the concrete or the mortar [18].…”

Effect of hybrid-fiber- reinforcement on the shear behavior of high-strength-concrete beams

“…The majority of previous work focused on the physical and mechanical characteristics of using single or hybrid fibers in cementitious materials (Tahenni et al, 2016;Lim and Hong, 2017;Alrefaei et al, 2018;Ortiz Navas et al, 2018;Zhang et al, 2018;Ayub et al, 2019;Koniki and Prasad, 2019;Torres and Lantsoght, 2019;Xu et al, 2019;Yavaş et al, 2019;Ali et al, 2020;Ismail and Hassan, 2021;Shaaban et al, 2021;Yang et al, 2021), and there have been fewer studies on the shear behavior of FRC elements that used a single type of fiber, whereas there is a lack of research into the effect of hybrid fibers on the shear behavior of high-strength concrete elements although the use of hybrid fibers had been shown to significantly improve the properties of concrete over the use of a single type of fiber (Alrefaei et al, 2018;Navas et al, 2018;Khan et al, 2020). Additionally, the previous studies that used hybrid fibers varied in terms of the type, proportion, characteristics, and shape of the fibers (Kumar et al, 2017;Fadil et al, 2018;Smarzewski, 2018;Wang et al, 2019;Zhang et al, 2019;Shi et al, 2020;Tran et al, 2020).…”

Experimental and theoretical behaviour of reinforced concrete beams containing hybrid fibres

“…For the FEA of hybrid reinforced RC beams using three dimensional (3D) FEA program "ATENA 3D", material properties mainly required as input parameters for the FEA, which obtained from the compressive and tensile stress-strain response. All beams modelled as a three-dimensional solid object characterized by a material model "CC3DNonLinCementitious2User" by defining userproperties and material laws proposed by the researchers earlier [37,38]. CC3DNonLinCementitious2User was used to define customise fracture-plastic material model.…”