Mitsubishi Kasei Corporation

Hiromichi Sakai

Takeo Sawanobori

Tatsuo Ando

Kazuhiro Sone

Yuji Noguchi

Haruo Katsumata

Keisuke Takahashi

Masashi Matsumoto

Hirofumi Ootaguro

Moriyasu Nakamura

Hirobumi Otaguro

Takeshi Ikeda

A carbon fiber-reinforced hydraulic composite material having excellent mechanical strength, workability, and freezing-and-thawing resistance, wherein chopped carbon fibers having a monofilament tensile strength of from 140 kg/mm.sup.2 to 270 kg/mm.sup.2, and a monofilament diameter of from 15 .mu.m to 30 .mu.m are blended as the carbon fibers at a ratio of from 1% to 4% by volume with respect to the entire composite material to bring a flow index of the composite material before its hardening to 120 mm or above.

Carbon fiber-reinforced hydraulic composite material

A cement reinforcing fiber obtained by impregnating an organic or inorganic fiber with a thermosetting resin, then coating it with a rubber solution or rubber latex, and curing it.

Cement reinforcing fiber

Cement is reinforced by mixing into a water-curable cement a reinforcing quantity of a fiber prepared by impregnating a carbon fiber with from 50-200 wt. % of a thermosetting resin, coating the impregnated resin with from 10-200 wt. % of a rubber solution or rubber latex, and then curing the coated fiber.

Modified carbon fiber reinforced cement

Cement mortar matrix and product are formed which are reinforced with a resin-impreganted twist-woven (Karami-ori) network of fibers which are oriented in the cement mortar in the direction of the maximum tensile stress yielded by the bending moment.

Fiber reinforced cement mortar product

Growing community of inventors

Kitakyushu, Japan

Hiromichi Sakai