Influence of internal composition of fiber reinforced cement composites on resistance to near field blast

FIBRE CONCRETE 2019

土木建筑工程

Zíma, J.^1 ; Foglar, M.^1

Czech Technical University in Prague, Faculty of Civil Engineering, Prague, Czech Republic^1

关键词: Cement composite;    Fiber reinforced cement composites;    Internal composition;    Military areas;    Near fields;    On-resistance;    Overpressure;    Steel plates;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/596/1/012020/pdf
DOI  :  10.1088/1757-899X/596/1/012020

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

This paper describes the influence of internal composition of fiber reinforced cement composites on resistance to near field blast. The influence of multiple basalt meshes and dispersed fibers on a damage induced by a near-field blast is studied and numerically evaluated. Experimental measurements performed in the Boletice military area in 2014, 2015 and 2016 are evaluated by numerical simulations. The evaluation of the results is mainly focused on the stress in the cement composite, propagation of the overpressure caused by the blast and velocity of the ejected parts from the specimen. The influence of velocity of ejected parts coming out of the specimen, originally caused by the impact of a steel plate which bears TNT charges, is examined. And last, but not least, the influence of presence and position of basalt meshes in the specimen on its damage induced by delamination is also examined.