Shigeru Furukawa

Recycling of resin matrix composite materials VII : future perspective of FRP recycling

Resin matrix composites reinforced by glass fibers and carbon fibers (FRPs) are used extensively for many industrial applications, such as construction materials, automobiles, ships and sporting goods, because of their high strength, ease of molding, light weight, durability, and resistance to corrosion, shock and abrasion. However, despite its many superior properties, it is difficult to resource and recycle FRP after its disposition. In this report, the recycling technology of FRP that has been developed is introduced as well as an outline of new recycling technology of FRP developed by the authors. FRP fine powders are made from waste FTP moldings using a fine powder crusher. The average grain size of these fine powders is 15-20 μm. FRP fine powder was examined as a possible additive to paints and it was found that it increased the tensile strength of the paints. FRP can also be recycled as filler for FRP resin. FRPs were also examined for possible civil and construction materials and they were found t...

FLEXURAL BEHAVIORS OF CONCRETE BEAMS REINFORCED WITH CARBON FIBER REINFORCED COMPOSITE RODS

本文は, 連続炭素繊維にあらかじめセメントペーストを含浸して棒状に成形した炭素繊維補強セメント複合材料 (CFRCロッド) を, コンクリートはりの補強材として用いるための基礎的知見を得るために行った実験結果をとりまとめたものである. すなわち, モルタルあるいはコンクリート中にCFRCロッドを一次元に配置したはりの曲げ強度試験を行い, CFRCロッドを作製する際の含浸用セメントの種類, 炭素繊維の種類や繊維量, 炭素繊維の品質ならびにその組合わせなどが, CFRCロッドで補強したはりの曲げ耐力, たわみ, 曲げタフネスおよび補強材のひずみなどに及ぼす影響についてとりまとめたものである.