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Title: Quick hardening cement-asphalt composition
Abstract:
A quick hardening cement-asphalt composition used as a grout for a ballast-filled track structure comprising (a) 100 parts by weight of a cement composition prepared by adding to portland cement about 10 to 50% by weight of a mixture of a calcium aluminate-series mineral and calcium sulfate in a weight ratio of about 1:0.3 to 1:3; about 0.05 to 10% by weight of an inorganic salt, and about 0.05 to 3% by weight of at least one of an organic carboxylic acid, an organic hydroxycarboxylic acid and a salt thereof, and (b) about 30 to 400 parts by weight of an asphalt emulsion containing about 0.2 to 8% by weight of a polyoxyethylene alkyl phenyl ether, polyoxyethylene alkyl ether, polyoxyethylene alkyl ester, sorbitan alkyl ester, polyoxyethylene sorbitan alkyl ester or sucrose fatty acid ester nonionic emulsifier and about 0.05 to 2% by weight of a multivalent metal chloride, calculated as the multivalent metal ion.
Other info: Inventors: Higuchi, Yoshiro (Higashikurume, JA) Harada, Yutaka (Murashino, JA) Sato, Toshio (Tokyo, JA) Nakagawa, Koji (Asahi, JA) Kawaguchi, Iwazo (Tokyo, JA) Kasahara, Yasushi (Sagamihara, JA) Application Number: 512393 Filing Date: 1974-10-04 Publication_date: 1978-04-18 Assignee: Japanese National Railways (Tokyo, JA); Denki Kagaku Kogyo Kabushiki Kaisha (Tokyo, JA); Toa Doro Kogyo Co., Ltd. (Tokyo, JA) Primary Class(es): 106/671 106/664 Other Classes: US Patent Ref:
Other Refs: Other References: Kirk Othmer Encyclopedia of Chemical Technology 2nd ed., vol. 8, pp. 127-131. The Chemistry of Cement and Concrete, F. M. Lea, 1956, pp. 252-253, 1956, Edward Arnold (Pub.) Ltd., London. Concrete Technology and Practice, W. H. Taylor, 1965, pp. 184-187, American Elsevier Publ. Co. Inc., New York. | |