Nippon Steel Corporation

Kanebo, Limited

Nippon Steel Chemical Co., Ltd.

Ryusuke Hayashi

Yoshio Nakazawa

Kanji Yamada

Shirou Tsubouchi

Shin-ichi Inaba

Hiroki Naganuma

Yasuyuki Shindo

Takashi Yamada

A process is disclosed for the preparation of a network article of a leno cloth fixed with a resin. The leno cloth is impregnated with the resin and the resin is solidified while tension is applied in the direction of the weft of the cloth.

Process for the preparation of a network article

A network article comprises reinforcing fiber fixed with a resin, in which the weft is almost straight and, preferably, the warp is also almost straight. To attain this, the warp consists of at least two kinds of yarns having different rigidities, and the lower rigidity yarn wreathes with higher rigidity yarn. Alternatively, a leno cloth is drawn in the weft direction to straighten the weft and then the resin is solidified under tension. The network article and a shaped inorganic product reinforced therewith exhibit higher tensile strength than those of the prior art.

Impregnated leno fabric and reinforced inorganic matrix article

A method for treatment of carbon fibers for reinforcement comprises the step of coating or impregnating carbon fibers with an emulsion of epoxy resin having colloidal silica added thereto so as to harden the same. The carbon fibers treated in this way exhibit high bonding strength with respect to a concrete matrix, making it possible to obtain excellent carbon fiber reinforced mortar and concrete.

Method for surface treatment of carbon fibers for reinforcement

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Yokohama, Japan

Ryusuke Hayashi