A Relook on Dosage of Basalt Chopped Fibres and Its Influence on Characteristics of Concrete

Effective recycling of disposable medical face masks for sustainable green concrete via a new fiber hybridization technique

“…The best performance was demonstrated by M8, with an increase in ƒʹ FS of 59.5% in ƒʹ FS compared to the control mix, consistent with the ƒʹcs and ƒʹ ST results. For M9, a slight decrease in ƒʹ FS was observed; this trend was also observed for ƒʹcs and ƒʹ ST , and may be due to the negative effect of high doses of DMFM fiber and BF, as reported in previous studies [58] , [59] . Overall, the graph indicates improvements in the ƒʹ FS of FRAC with combined use of DMFM fiber and BF, confirming the effectiveness of these fibers in strengthening the concrete microstructure and enabling resistance to high tensile stresses and cracking.…”

Flexural Behaviour of Cementitious Mortars with the Addition of Basalt Fibres

“…Such reduction in crack width and the number of cracks due to fibre usage might be useful in terms of the durability performance of the material, as deleterious substances (such as water, chlorides and carbon dioxide) have limited possibility of ingression into the concrete construction element [ 15 ]. The phenomenon has already been confirmed in the case of concrete with newly developed basalt fibres [ 8 ]. The mechanism of the bridging effect can be described as follows: When the maximum value of stresses is gained in a flexural test, the first damages appear and the cracking process begins.…”

“…Fibre addition is thought to overcome some of these limitations due to their beneficial influence on the mechanical properties of hardened mortar, such as impact resistance, and splitting tensile and flexural strengths [ 3 , 4 , 5 , 6 , 7 ]. Additionally, the improvement of tensile strength, flexural toughness and energy absorption capacity due to fibre addition, as far as the mechanics of cracking propagation are concerned, have been confirmed in the case of the most popular cementitious material—concrete—in numerous experimental [ 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 ] and numerical [ 23 , 24 , 25 , 26 , 27 ] investigations. The latest research programmes in that area are focused mostly on subjects concerning newly developed materials [ 8 , 10 , 20 ], the ecological impact of building materials [ 19 , 22 ] or less typical performance tests [ 18 , 21 ].…”