A Comparative Study on Blast-Resistant Performance of Steel and PVA Fiber-Reinforced Concrete: Experimental and Numerical Analyses

This paper deals with the blast-resistant performance of steel fiber-reinforced concrete (SFRC) and polyvinyl alcohol (PVA) fiber-reinforced concrete (PVA-FRC) panels with a contact detonation test both experimentally and numerically. With 2% fiber volumetric content, SFRC and PVA-FRC specimens were...

Full description

Saved in:
Bibliographic Details
Published in:Crystals (Basel) 2020-08, Vol.10 (8), p.707
Main Authors: Chen, Le, Sun, Weiwei, Chen, Bingcheng, Xu, Sen, Liang, Jianguo, Ding, Chufan, Feng, Jun
Format: Article
Language:English
Subjects:
Blast resistance
Brittle materials
Cement
Comparative studies
Composite materials
Computer simulation
Concrete mixing
Contact
contact detonation
Crack initiation
Curing
damage mode
Detonation
Ductility
fiber-reinforced concrete
lattice discrete particle model-fiber
Lattice vibration
Mathematical models
Mechanical properties
Numerical models
Numerical prediction
Panels
Polyvinyl alcohol
Reinforced concrete
Reinforcing steels
Simulation
Steel fiber reinforced concretes
Steel fibers
Strain hardening
Tensile strength
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper deals with the blast-resistant performance of steel fiber-reinforced concrete (SFRC) and polyvinyl alcohol (PVA) fiber-reinforced concrete (PVA-FRC) panels with a contact detonation test both experimentally and numerically. With 2% fiber volumetric content, SFRC and PVA-FRC specimens were prepared and comparatively tested in comparison with plain concrete (PC). SFRC was found to exhibit better blast-resistant performance than PVA-FRC. The dynamic mechanical responses of FRC panels were numerically studied with Lattice Discrete Particle Model-Fiber (LDPM-F) which was recently developed to simulate the meso-structure of quasi-brittle materials. The effect of dispersed fibers was also introduced in this discrete model as a natural extension. Calibration of LDPM-F model parameters was achieved by fitting the compression and bending responses. A numerical model of FRC contact detonation was then validated against the blast test results in terms of damage modes and crater dimensions. Finally, FRC panels with different fiber volumetric fractions (e.g., 0.5%, 1.0% and 1.5%) under blast loadings were further investigated with the validated LDPM-F blast model. The numerical predictions shed some light on the fiber content effect on the FRC blast resistance performance.
ISSN:2073-4352
2073-4352
DOI:10.3390/cryst10080707