A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Complete stress–strain curves for pine needle fibre reinforced concrete under compression
Highlights Pine Needle Fibre Concrete (PNFRC) with alkali-treated fibre shows splitting failure under uniaxial compression, compared with the cracks of plain concrete. Pine Needle Fibre in substitution of natural materials improved the peak stress, strain at peak stress, elastic modulus and toughness index of the concrete. The addition of pine needle fibre was useful to control the post-crack regime of the complete stress–strain curve of the natural fibre-reinforced concrete (NFRC). An analytical model based on the tested results was suggested in this research and could effectively predict the PNFRC under uniaxial compression behaviour.
Abstract To reduce the high consumption of natural resources by civil construction, in recent years, there are more and more re-searches on using natural biomass to replace coarse and fine natural aggregates. Masson pine needle fibre (MPNF) is an im-portant raw material for environment-friendly and cost-effective. In this paper, the surface of pine needles was directly modified by boiling water, 2% dilute alkali and soaking in water. Each set of experimental samples containing volume contents of MNPF with 30 mm length ranging from 0% to 2% by concrete volume were prepared. The stress–strain behaviour and the mechanical properties of pine needle fibre reinforced concrete (PNFRC) under uniaxial compression are studied. The result of this paper shows that the addition of pine needle fibre changed fracture process and improved the mechanical properties compare to that of plain concrete. Compared the fitting curve of the proposed equations and experimental date, it can be concluded that using 0.5% and 1% of dilute alkali-treated and boiling water-treated MPNF adding in the concrete, consents to obtain a composite with optimum mechanical properties, and the proposed model in this paper could express the stress–strain curves of PNFRC.
Complete stress–strain curves for pine needle fibre reinforced concrete under compression
Highlights Pine Needle Fibre Concrete (PNFRC) with alkali-treated fibre shows splitting failure under uniaxial compression, compared with the cracks of plain concrete. Pine Needle Fibre in substitution of natural materials improved the peak stress, strain at peak stress, elastic modulus and toughness index of the concrete. The addition of pine needle fibre was useful to control the post-crack regime of the complete stress–strain curve of the natural fibre-reinforced concrete (NFRC). An analytical model based on the tested results was suggested in this research and could effectively predict the PNFRC under uniaxial compression behaviour.
Abstract To reduce the high consumption of natural resources by civil construction, in recent years, there are more and more re-searches on using natural biomass to replace coarse and fine natural aggregates. Masson pine needle fibre (MPNF) is an im-portant raw material for environment-friendly and cost-effective. In this paper, the surface of pine needles was directly modified by boiling water, 2% dilute alkali and soaking in water. Each set of experimental samples containing volume contents of MNPF with 30 mm length ranging from 0% to 2% by concrete volume were prepared. The stress–strain behaviour and the mechanical properties of pine needle fibre reinforced concrete (PNFRC) under uniaxial compression are studied. The result of this paper shows that the addition of pine needle fibre changed fracture process and improved the mechanical properties compare to that of plain concrete. Compared the fitting curve of the proposed equations and experimental date, it can be concluded that using 0.5% and 1% of dilute alkali-treated and boiling water-treated MPNF adding in the concrete, consents to obtain a composite with optimum mechanical properties, and the proposed model in this paper could express the stress–strain curves of PNFRC.
Complete stress–strain curves for pine needle fibre reinforced concrete under compression
Wang, Yonggang (author) / Long, Wanpeng (author)
2021-06-28
Article (Journal)
Electronic Resource
English
Stress-strain curves for fibre reinforced concrete in compression
| Elsevier | 1976
Stress-strain curves for steel-fiber reinforced concrete under compression
| Online Contents | 1999
Stress-Strain Characteristics of Various Fibre-Reinforced-Concrete in Compression
| British Library Conference Proceedings | 1994
Complete stress--strain behaviour of high-strength concrete under compression.
| Online Contents | 1994
Constitutive model for the stress-strain response of fibre reinforced concrete in compression
| British Library Conference Proceedings | 2002