41
Masuda Tsugunari, Okada Takahiko: Production of particulate gyrolite. Chichibu Onoda Cement, February 4, 1997: JP1997-030812

PROBLEM TO BE SOLVED: To obtain a highly pure gyrolite not requiring the control of particle size and particle shape by subjecting a siliceous raw material and a calcareous raw material to a mechanochemical treatment comprising a mixing-grinding treatment and subsequently subjecting the treated prod ...


42
Okamoto Toyoshige, Ishida Yasuyuki, Uchida Jun, Okada Takahiko: Elution preventing material of heavy metal from hardened body, and hardened body. Chichibu Onoda Cement, December 22, 1998: JP1998-338564

PROBLEM TO BE SOLVED: To change heavy metal ions, especially Pb into insoluble to prevent elution, and to effectively use molten slag by compounding an alkaline stimulating material into a blast furnace slag powder containing sulfur. SOLUTION: An alkaline stimulating material selected from compds. e ...


43
Naito Kazunari, Shimojima Hiromasa, Kimura Mitsuyoshi, Hayashi Mutsuo, Takahashi Heishiro, Higuchi Takeshi, Koyama Tomikazu: Metal-ceramics composite and its production. Chichibu Onoda Cement, Serankusu, March 5, 1999: JP1999-061291

PROBLEM TO BE SOLVED: To solve the problem in the conventional metal-ceramics composite that working costs are high and particularly working of through holes, such as deep holes, is difficult. SOLUTION: In this metal-ceramics composite, a part of the composite material is composed of ceramic fibers ...


44
Ito Hiroki, Fujita Kotaro, Goto Koji, Ishitani Kazuhiro: Lowly alkaline hydraulic composition. Chichibu Onoda Cement, December 22, 1998: JP1998-338875

PROBLEM TO BE SOLVED: To provide a hydraulic compsn. which can be used in application areas where a low alkalinity, such as a pH of about 10.5 or below, is required though it does not exhibit a high solidification strength and which is useful esp., as a solidifying agent for vegetation soil and as a ...


45
Shirasaka Masaru, Morishita Nobuaki, Noguchi Masaaki: Material for filling cavity. Chichibu Onoda Cement, February 18, 1997: JP1997-048654

PROBLEM TO BE SOLVED: To obtain a material for filling cavities having a low bleeding ratio, excellent in strength and having good characteristics of filling the cavities with seawater by blending a mixed hardener comprising a fly ash and a cement with the seawater and then mixing the resultant liqu ...


46
Sone Noriaki, Tanigawa Koichi, Koyanaka Akihiro, Kato Masahiro, Tanosaki Takao, Nozaki Kenji, Shirasaka Masaru, Matsuhisa Masato, Ashiyahara Satoru, Soeda Koichi: Mortar or concrete composition. Chichibu Onoda Cement, June 17, 1997: JP1997-156971

PROBLEM TO BE SOLVED: To obtain a mortar or a concrete composition, capable of quickly and simply judging the usability thereof as an admixture for a cement or a concrete by typical characteristics, ensuring the use of a large amount of coal ash (fly ash) and a prescribed fluidity and air-entraining ...


47
Nakamura Shuzo, Satake Shinya, Tanimura Mitsuru, Honda Susumu: Reinforcing agent for cement and its application. Chichibu Onoda Cement, Nippon Oil &Amp Fats, January 14, 1997: JP1997-012351

PURPOSE: To improve the initial fluidity, holding time of fluidity and development in strength of a cement compsn. by incorporating a specified polyalkylene compd.-maleic acid anhydride copolymer (salt of the hydrolysate) and soluble calcium salt. CONSTITUTION: A polyoxyalkylene compd. expressed by ...


48
Matsunaga Yasumi, Iwamoto Tadamasa: Artificial aggregate and its production. Chichibu Onoda Cement, January 14, 1997: JP1997-012349

PURPOSE: To obtain an aggregate having a low water absorption and higher strength by kneading coal ash, cement and water, and then forming and ageing. CONSTITUTION: 50-70 pts.wt. of coal ash having ≤12μm average particle size by 50-70 pts.wt. and 50-30 pts.wt. of cement (100 pts.wt. in total) are kn ...


49
Shibazaki Hideo, Nagata Norifumi, Tajima Isao, Osada Mitsunao, Kai Isao, Kaneiwa Toshihiko: Composite board and its production. Chichibu Onoda Cement, Souwa Kasei, Asahi Organic Chem, August 12, 1997: JP1997-209299

PROBLEM TO BE SOLVED: To obtain a composite board practically usable as a substitute for a wood-based material by reutilizing waste gypsum board available as an industrial waste. SOLUTION: The composite board is a formed and cured material or its bonded material produced by hot-pressing a compositio ...


50
Karasawa Akihiko, Katagiri Makoto, Ikari Yasuhiro: Planting concrete block. Chichibu Onoda Cement, Hyogo Concrete, July 29, 1997: JP1997-195290

PROBLEM TO BE SOLVED: To provide a high quality planting concrete block by employing hard material with a water absorption rate reconditioned in a specified range as skeleton material to form a porous concrete. SOLUTION: As cement to form a porous concrete block, portland cement is used. Skeleton ma ...