Challenges in Strengthening of Concrete Elements with PBO-FRCM Materials

2nd International Conference on Civil Engineering and Materials Science

Trapko, T.^1 ; Urbaska, D.^1 ; Musial, M.^1

Faculty of Civil Engineering, Wroclaw University of Science and Technology, Wybrzeze Wyspiaskiego, Wroclaw

50-370, Poland^1

关键词: Concrete elements;    Matrix layers;    PBO fibres;    Reinforced concrete beams;    Reinforced concrete elements;    Shear strengthening;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/216/1/012021/pdf
DOI  :  10.1088/1757-899X/216/1/012021

来源: IOP

【 摘 要 】

In the paper a technology of reinforced concrete elements strengthening with PBO mesh bonded with a mineral mortar was presented. The possibilities of application of this system in shear strengthening of reinforced concrete beams and compressed elements are in the range of interests of the authors. In the paper authors experiences in strengthening of such type elements with PBO mesh bonded with mineral mortar were described. Research has shown that destruction of elements strengthened with PBO-FRCM system is caused by a debonding of the fibres from the matrix layer or delamination at the final overlap of PBO mesh. In order to obtain the most efficient use of PBO fibres and prevent premature loosening of composite appropriate anchorage should be used.