Complete stress–strain curves of reactive powder concrete reinforced with basalt fibres Available to Purchase

The compressive stress–strain curves of reactive powder concrete (RPC) reinforced with basalt fibres (BFs) were experimentally studied. The length and volume content of BFs were considered as the influencing parameters. A total of 15 groups of cementitious composite specimens were investigated. The workability, failure mode, peak stress, corresponding strain at peak stress, elastic modulus, toughness index and stress–strain curve of the cement-based composites were carefully explained. The results indicated that an increase in fibre volume content gradually decreased the workability of the specimen. Specimens reinforced with 6 mm and 12 mm long BFs showed different failure modes from those reinforced with 18 mm BFs. The former had better integrity, while the latter had poor integrity. The shorter BFs (6 mm and 12 mm) improved the performance under peak stress and the compressive toughness of the RPC. For the 18 mm long BFs, with increasing fibre content, the peak stress and the corresponding strain decreased and the toughness index also decreased gradually. The fibre length/content had a small effect on the elastic modulus of the RPC but, with increasing fibre volume content, the peak secant modulus of the specimens decreased gradually. Considering the results of four groups of models, a group of predictive models was selected to express the complete stress–strain curves of RPCs reinforced with BFs.