Mix design and properties assessment of Ultra-High Performance Fibre Reinforced Concrete (UHPFRC)

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

“…Additionally, it can be also found that the data points representing the reference concrete developed in this study are on the trend line, which implies that the relatively high cement amount is not helpful for producing UHPC with small environmental impact. This should be attributed to the fact that when the cement amount is relatively high, the cement hydration degree is smaller and the cement efficiency is lower, compared to the concrete with low cement amount [40]. Hence, to efficiently produce an eco-friendly UHPC with a reduced environmental impact, the mineral admixtures should be utilized to replace cement and the concrete design should be based on the optimized particle packing model.…”

“…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.…”

Use of alternative waste materials in producing ultra-high performance concrete

“…The particle size ranges of cement, supplementary cementitious materials (such as silica fume), fine quartz sand and quartz powder should be selected in such a way that the grading curve for the mixture of granular materials would match with the optimum grading curves, reported in literature, for example optimum grading curve given by Schmidt and Fehling [17] and particle size distribution model for optimization of the composition of mixture of granular materials used for UHPC [18][19].…”

Fire resistance of ultra-high performance fibre reinforced concrete due to heating and cooling

“…Steel fibers of 0.2 mm diameter at 2% and 2.5% of the total volume were used in Mixes A and B, respectively. The percentages of steel fiber were adopted from Yu et al [12] in their study on optimized UHPFRC. The 2% steel fiber amount is an optimized value practiced at the industry and research levels.…”