The fibre orientation influence in cementitious composite against extreme load resistance

International Conference on Mechanical Engineering and Applied Composite Materials

机械制造;材料科学

Lovichova, R.^1 ; Fornusek, J.^1 ; Mara, M.^1 ; Kocova, M.^1 ; Rihova, Z.^1

CTU in Prague, Faculty of Civil Engineering, Experimental Centre, Czech Republic^1

关键词: Cementitious composites;    Deformable projectile;    Extreme loads;    Fibre orientation;    Fibre reinforced;    On-resistance;    Ultra high performance fibre reinforced concretes;    Visual evaluation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/307/1/012069/pdf
DOI  :  10.1088/1757-899X/307/1/012069

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

This paper is focused on resistance of steel fibre-reinforced cement composite against impact of the deformable projectile shot from the 7.62 × 39 caliber. Different values of resistance against impact of the projectile are caused by different orientation of the fibres. The influence of formwork position, which is the main cause of the different orientation of the fibres, is investigated. The resistance was examined on thirty slabs made of ultra-high performance fibre-reinforced concrete (UHPFRC). Fifteen specimens with vertical orientation of formwork and fifteen with horizontal orientation of formwork was made. The resistance is classified according to the visual evaluation and local damage measurement on the front side and the rear side of the examined specimens. The experiment shown positive influence of vertically oriented formwork on the slabs according to their resistance against impact of the projectile.