946 リサイクル CFRP 片強化コンクリートの機械的特性

概要

論文の詳細を見る
Mechanical properties of a concrete reinforced with recycled CFRP pieces (CFRPRC) were evaluated and its fracture behavior was characterized. First, compressive and flexural tests of CFRPRC were conducted to investigate the effect of content and size of the CFRP pieces and size of the CFRPRC specimen on compressive and flexural strength, flexural modulus and work of fracture. Next, fracture surfaces were observed with a videomicroscope to understand the mechanism of reinforcement. Compressive and flexural strength increases with increasing content of the small-and medium-sized CFRP pieces while the large-sized CFRP pieces do not always increase the strength because of limited number of the pieces dispersed in the specimen. Strength and its scatter are larger in smaller CFRPRC specimens and the specimens with large-sized CFRP pieces due to volumetric effect and heterogeneous dispersion of the CFRP pieces. The CFRP improves work of fracture due to bridging effect, hence, the CFRPRC fractures in a ductile manner when loaded in flexure.
一般社団法人日本機械学会の論文
2003-08-05