Mitsubishi Materials Corporation

Takenaka Corporation

Keihin Ryoko Concrete Industry Corporation

Takemoto Oil and Fat Corporation

Etsurou Asakura

Mitsuo Kinoshita

Mitsuo Sato

Toshio Yonezawa

Kenrou Mitsui

Kunio Yanagibashi

Yousaku Ikeo

Hisatsugu Yoshida

Tooru Okuno

The hydraulic substance according to the present invention comprises a certain amount of solid particles A (such as portland cement and mixed cement comprising portland cement), an average diameter thereof is 5 to 50 .mu.m, and solid particles B (such as silica fume comprising amorphous silica), an average diameter thereof is less than 1/5 of the particles A, and the particles B have such characteristic that they cohere to the surfaces of the particles A in water, and the quantity of the particles B is arranged such that they cover at least to make a single layer over the whole or part of surfaces of the particles A to cover whole or part of surfaces of particles A with particles B at least with a single layer, and the quantity of the water is arranged such that it is less than 60% of the total amount of the particles A and particles B.

Hydraulic substance with water stable particle coating

Growing community of inventors

Saitama-ken, Japan

Etsurou Asakura