Shimizu Construction Co., Ltd.

Toshio Kumagai

Akira Okada

Nobuo Suzuki

Yasuo Kajioka

Tomio Komine

Tomoo Shokawa

Hajime Nomura

Kazumi Okuzumi

Takao Takeshi

The present invention relates to an anti-dusting treating method and treating agent for inorganic fiber containing building materials which comprises impregnating an inorganic fiber containing building material with an aqueous solution of either a polyvinyl alcohol or a denatured polyvinyl alcohol. The present invention aims at preventing dusting of a building material containing an inorganic fiber such as asbestos by impregnating such an inorganic fiber containing building material with a polyvinyl alcohol or denatured polyvinyl alcohol aqueous solution. The polyvinyl alcohol or denatured polyvinyl alcohol employed in the present invention has excellent penetrating and film-forming properties, and the impregnated polyvinyl alcohol or denatured polyvinyl alcohol serves as an adhesive by which inorganic fibers such as asbestos fibers are fixed. Therefore, it is possible to facilitate the impregnating operation and obtain satisfactory anti-dusting effectiveness.

Anti-dusting treating method and treating agent for inorganic fiber

A concrete leveling machine is provided which propels itself over the surface of laid concrete and by use of rotating augers or oscillating stabilizers and a temper, levels and finishes the surface to a prescribed level and condition. A laser reference beam transmitted over the surface is detected by detectors attached to the leveling section of the machine and deviation of the level of the detectors from a reference level is adjusted so that the leveling section is also brought to a level required to produce the desired surface level. The machine is turned by a turntable integral with the main body which lifts the machine allowing it to turn by differential drive to its drive wheels.

Concrete leveling machine

Growing community of inventors

Tokyo, Japan

Toshio Kumagai