Experimental Investigation of the Dynamic Mechanical Properties of Polypropylene-Fiber-Reinforced Foamed Concrete at High Temperatures
Open Access
- 31 May 2023
- Vol. 15 (11), 2544
- https://doi.org/10.3390/polym15112544
Abstract
Polypropylene-fiber-reinforced foamed concrete (PPFRFC) is often used to reduce building structure weight and develop engineering material arresting systems (EMASs). This paper investigates the dynamic mechanical properties of PPFRFC with densities of 0.27 g/cm3, 0.38 g/cm3, and 0.46 g/cm3 at high temperatures and proposes a prediction model to characterize its behavior. To conduct the tests on the specimens over a wide range of strain rates (500~1300 s−1) and temperatures (25~600 °C), the conventional split-Hopkinson pressure bar (SHPB) apparatus was modified. The test results show that the temperature has a substantial effect on the strain rate sensitivity and density dependency of the PPFRFC. Additionally, the analysis of failure models demonstrates that with the melting of polypropylene fibers, the level of damage in PPFRFC under dynamic loading increases, resulting in the generation of a greater number of fragments.Keywords
Funding Information
- National Natural Science Foundation of China (12072287, 11872051, 11372255, 11572261)
- Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University (CX2021043)
This publication has 42 references indexed in Scilit:
- Impact behaviour testing of aluminium foamInternational Journal of Impact Engineering, 2013
- Mechanical properties of foamed concrete exposed to high temperaturesConstruction and Building Materials, 2012
- Elevated-temperature thermal properties of lightweight foamed concreteConstruction and Building Materials, 2011
- Compressive behaviour of closed-cell aluminium foams at high strain ratesComposites Part B: Engineering, 2010
- The effect of porosity on the strength of foamed concreteCement and Concrete Research, 2002
- Porosity and permeability of foamed concreteCement and Concrete Research, 2001
- Experimental study of energy absorption in a close-celled aluminum foam under dynamic loadingScripta Materialia, 1999
- Separation of waves propagating in an elastic or viscoelastic Hopkinson pressure bar with three-dimensional effectsInternational Journal of Impact Engineering, 1999
- On the use of a viscoelastic split hopkinson pressure barInternational Journal of Impact Engineering, 1997
- A three dimensional analytical solution of the longitudinal wave propagation in an infinite linear viscoelastic cylindrical bar. Application to experimental techniquesJournal of the Mechanics and Physics of Solids, 1995