Other

Taisei Corporation

Japan Envirochemicals, Ltd.

Yasuro Ito and Taisei Corporation

Masanori Tsuji

Yasuro Ito

Yoshiro Higuchi

Mitsutaka Hayakawa

Yasuhiro Yamamoto

Kenji Kuroha

Yukikazu Tsuji

Takeshi Shiki

Takashi Nakamura

Hiroshi Tada

Hideharu Kaga

Yasunori Matsuoka

Eiichi Tazawa

Seiji Kaneko

Masaaki Kameno

Norio Marushima

Keizo Furukawa

Koichi Tomikawa

An molded product of activated carbon produced by molding a kneaded mixture containing an activated carbon, a solvent, and a phenol-aldehyde type resin being solid in a normal temperature and containing 50 to 95% by weight of components soluble in the solvent used, drying and curing the molding, and then carbonizing the molding in an inert gas has a high adsorption capability and a high mechanical strength, e.g., a compressive strength, especially the strength after being contacted with an acid or water.

Molded product of activated carbon and a method for production thereof

Method of preparing mortar or concrete

A method and apparatus of measuring water percentages of a fine aggregate comprising the steps of prewetting the fine aggregate, containing the prewetted fine aggregate in an air-tightly closed container, applying a centrifugal force to said container over a predetermined period to remove a portion of a quantity of water deposited on the fine aggregate, and measuring the water content remaining in or on the fine aggregate after being subjected to the centrifugal force, and thus determining a percentage of water adhered to the fine aggregate and a percentage of water of the fine aggregate in which interstice thereof is saturated with water while a surface thereof is dry.

One of ingredients of green concrete are supplied to a rotary disc through a central tube by a pump or low pressure air and the other ingredient is supplied to the rotary disc from a hopper by a screw conveyor. These ingredients are mixed together on a rotary disc and then projected by centrifugal force.

Method and apparatus for applying mortar or concrete

In the preparation of a cement paste about 30 to 76% of the total water is added to the cement to form a funicular state, capillary state or slurry state, and the resulting mixture is kneaded so as to reduce the coagulated lumps of cement. Then the remaining quantity of water is added and the composition or mixture is kneaded again. Sand and/or gravel may be incorporated after the firstly kneaded mixture. The resulting cement paste, mortar or green concrete exhibits a small percentage of bleeding water and products prepared therefrom have a high compression strength.

Method of preparing kneaded compositions

Growing community of inventors

Osaka, Japan

Masanori Tsuji