Static properties and impact resistance of a green Ultra-High Performance Hybrid Fibre Reinforced Concrete (UHPHFRC): Experiments and modeling

Evaluation of hybrid steel fiber reinforcement in high performance geopolymer composites

“…The slump flows of samples with 1% fiber content and different long/ short fiber ratios (80/20, 60/40, 40/60 and 20/80) are also tested, and those values are all in between of the samples with 1% pure long and short fibers (20.6 and 23.1 cm), following the tendency that a higher long/ short fiber ratio exhibits a relatively low slump flow. It should be noticed that one previous study mentioned that there is an optimum long/short fiber ratio in terms of workability in Portland cement based system [48], while this phenomenon is not observed in this study. It may imply that the slump flow in hybrid fiber conditions may also be influenced by other factors such as total fiber content, binder types, water dosage and utilization of superplasticizers.…”

Development of an eco-friendly Ultra-High Performance Concrete (UHPC) with efficient cement and mineral admixtures uses

“…Another possibility for mix design is offered by an integral particle size distribution approach of continuously graded mixes (modified Andreasen & Andersen particle packing model), in which very fine particles can be integrated with considerably lower effort, as detailed in [39]. Additionally, based on the previous experiences and investigations of the authors [40][41][42]73], by applying this modified Andreasen & Andersen particle packing model, it is possible to produce a dense and homogeneous skeleton of UHPC or UHPFRC with a relatively low binder amount (about 650 kg/m 3 ). Consequently, it can be shortly concluded that such an optimized design of concrete with appropriate amount of mineral admixtures can be a promising approach to produce Ultra-High Performance Concrete (UHPC) in an efficient way.…”

Development of Ultra-High Performance Fibre Reinforced Concrete (UHPFRC): Towards an efficient utilization of binders and fibres

“…Another possibility for the mix design is offered by an integral particle size distribution approach of continuously graded mixes (modified Andreasen & Andersen particle packing model), in which very fine particles can be integrated with considerably lower effort, as detailed in [24]. Additionally, based on the previous experiences and investigations of the authors [25][26][27][28], by applying this modified Andreasen & Andersen particle packing model, it is possible to produce a dense and homogeneous skeleton of UHPFRC with a relatively low binder amount (about 650 kg/m 3 ). Consequently, such an optimized design of the concrete can be a promising approach to produce UHPFRC with an efficient binders use.…”