A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
COMPOSITION FOR MORTAR OR CONCRETE AND MOLDED ARTICLE FORMED BY MOLDING THE SAME, AND METHOD FOR CHECKING THE QUALITY OF MORTAR OR CONCRETE
PROBLEM TO BE SOLVED: To provide a composition for mortar or concrete, a molded article formed by molding the same having excellent rust prevention property, and a method for checking the quality of mortar or concrete.SOLUTION: A test for checking the quality of a composition for mortar or concrete containing fine aggregate including blast furnace slag fine aggregate, binder including cement, and water, which one cycle consists of a dipping step of immersing in a sodium chloride solution a specimen prepared by embedding a steel material in the mortar or concrete composition and a drying step of drying the specimen, is carried out. To improve the rust prevention performance, the rusting amount of the steel material after predetermined cycles of a rust prevention performance test for testing a rust prevention performance by repeating the cycles once or more is made smaller than the rusting amount of the steel material after predetermined cycles of a rust prevention performance test for a specimen differing from the mortar or concrete composition in that a fine aggregate contains crushed sand and does not contain the blast furnace slag fine aggregate.SELECTED DRAWING: None
【課題】防錆性能に優れたモルタルまたはコンクリート用組成物、それを成形してなる成形品およびモルタルまたはコンクリートの品質確認方法を提供する。【解決手段】高炉スラグ細骨材を含む細骨材と、セメントを含む結合材と、水とを含有するモルタルまたはコンクリート用組成物であって、モルタルまたはコンクリート用組成物の内部に鋼材を埋め込んで作製した試験体を塩化ナトリウム溶液に浸漬する浸漬工程と、試験体を乾燥する乾燥工程とを１サイクルとして、これを１サイクル以上繰り返して防錆性能を試験する防錆性能試験による所定サイクル後の鋼材の発錆量が、モルタルまたはコンクリート用組成物とは細骨材が砕砂を含み高炉スラグ細骨材を含まないことのみが異なる試験体に対する防錆性能試験による所定サイクル後の鋼材の発錆量よりも少なく、防錆性能に優れるようにする。【選択図】なし
COMPOSITION FOR MORTAR OR CONCRETE AND MOLDED ARTICLE FORMED BY MOLDING THE SAME, AND METHOD FOR CHECKING THE QUALITY OF MORTAR OR CONCRETE
PROBLEM TO BE SOLVED: To provide a composition for mortar or concrete, a molded article formed by molding the same having excellent rust prevention property, and a method for checking the quality of mortar or concrete.SOLUTION: A test for checking the quality of a composition for mortar or concrete containing fine aggregate including blast furnace slag fine aggregate, binder including cement, and water, which one cycle consists of a dipping step of immersing in a sodium chloride solution a specimen prepared by embedding a steel material in the mortar or concrete composition and a drying step of drying the specimen, is carried out. To improve the rust prevention performance, the rusting amount of the steel material after predetermined cycles of a rust prevention performance test for testing a rust prevention performance by repeating the cycles once or more is made smaller than the rusting amount of the steel material after predetermined cycles of a rust prevention performance test for a specimen differing from the mortar or concrete composition in that a fine aggregate contains crushed sand and does not contain the blast furnace slag fine aggregate.SELECTED DRAWING: None
【課題】防錆性能に優れたモルタルまたはコンクリート用組成物、それを成形してなる成形品およびモルタルまたはコンクリートの品質確認方法を提供する。【解決手段】高炉スラグ細骨材を含む細骨材と、セメントを含む結合材と、水とを含有するモルタルまたはコンクリート用組成物であって、モルタルまたはコンクリート用組成物の内部に鋼材を埋め込んで作製した試験体を塩化ナトリウム溶液に浸漬する浸漬工程と、試験体を乾燥する乾燥工程とを１サイクルとして、これを１サイクル以上繰り返して防錆性能を試験する防錆性能試験による所定サイクル後の鋼材の発錆量が、モルタルまたはコンクリート用組成物とは細骨材が砕砂を含み高炉スラグ細骨材を含まないことのみが異なる試験体に対する防錆性能試験による所定サイクル後の鋼材の発錆量よりも少なく、防錆性能に優れるようにする。【選択図】なし
COMPOSITION FOR MORTAR OR CONCRETE AND MOLDED ARTICLE FORMED BY MOLDING THE SAME, AND METHOD FOR CHECKING THE QUALITY OF MORTAR OR CONCRETE
モルタルまたはコンクリート用組成物、それを成形してなる成形品およびモルタルまたはコンクリートの品質確認方法
AYANO KATSUNORI (author) / FUJII TAKASHI (author)
2018-09-20
Patent
Electronic Resource
Japanese
| European Patent Office | 2018