Flexural Behavior of Fire-Damaged Prefabricated RC Hollow Slabs Strengthened with CFRP versus TRM

摘要: In this paper, carbon fiber reinforced polymer (CFRP) and textile mortar (TRM) strengthening techniques were proposed to retrofit strengthen fire-damaged prefabricated concrete hollow slabs. A total of six slabs, from an actual multi-story masonry building, tested investigate the flexural performance (RC) slabs strengthened with TRM CFRP. The investigated parameters included method (CFRP versus TRM), number CFRP layers, or without fire exposure. One unstrengthened slab one served as control specimens remaining four first exposed ISO-834 standard for 1 h, then three them TRM. Through four-point bending tests at ambient temperature, failure modes, load deformation response recorded discussed. Both methods can significantly increase cracking peak well stiffness in early stage. by have better ultimate bearing capacity, but ductility reduced layers. Meanwhile, technique is a suitable improvement terms not only especially load, also capacity.