A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
NON-DISPERSIBLE UNDERWATER CONCRETE COMPOSITION AND HARDENED BODY THEREOF, AND METHOD FOR PRODUCING NON-DISPERSIBLE UNDERWATER CONCRETE
PROBLEM TO BE SOLVED: To provide a non-dispersible underwater concrete composition that exhibits a high underwater non-dispersibility with less thickener than the conventional non-dispersible underwater concrete composition and has a shortened setting time.SOLUTION: The non-dispersible underwater concrete composition is provided which contains cement, water, thickener, accelerator comprising at least calcium nitrite, and dispersant, and which is characterized in that: the unit cement content of the cement is 300 to 500 kg/m; the unit water content of the water is 170 to 200 kg/m; the blending quantity of the thickener with respect to the unit water content is 0.7 to 1.2 mass%; the blending quantity of the accelerator with respect to the unit cement content is 0.5 to 3.0 mass%; and the blending quantity of the dispersant with respect to the unit cement content is 4.0 mass% or less.SELECTED DRAWING: None
【課題】従来の水中不分離性コンクリート組成物よりも少ない増粘剤で高い水中不分離性を示し、かつ、凝結時間が短縮された水中不分離性コンクリート組成物を提供する。【解決手段】セメントと、水と、増粘剤と、少なくとも亜硝酸カルシウムを含む促進剤と、分散剤とを含む水中不分離性コンクリート組成物であって、セメントの単位セメント量が３００〜５００ｋｇ／ｍ３であり、水の単位水量が１７０〜２００ｋｇ／ｍ３であり、増粘剤の配合量が単位水量に対して０．７〜１．２質量％であり、促進剤の配合量が単位セメント量に対して０．５〜３．０質量％であり、かつ、分散剤の配合量が単位セメント量に対して４．０質量％以下であることを特徴とする、水中不分離性コンクリート組成物である。【選択図】なし
NON-DISPERSIBLE UNDERWATER CONCRETE COMPOSITION AND HARDENED BODY THEREOF, AND METHOD FOR PRODUCING NON-DISPERSIBLE UNDERWATER CONCRETE
PROBLEM TO BE SOLVED: To provide a non-dispersible underwater concrete composition that exhibits a high underwater non-dispersibility with less thickener than the conventional non-dispersible underwater concrete composition and has a shortened setting time.SOLUTION: The non-dispersible underwater concrete composition is provided which contains cement, water, thickener, accelerator comprising at least calcium nitrite, and dispersant, and which is characterized in that: the unit cement content of the cement is 300 to 500 kg/m; the unit water content of the water is 170 to 200 kg/m; the blending quantity of the thickener with respect to the unit water content is 0.7 to 1.2 mass%; the blending quantity of the accelerator with respect to the unit cement content is 0.5 to 3.0 mass%; and the blending quantity of the dispersant with respect to the unit cement content is 4.0 mass% or less.SELECTED DRAWING: None
【課題】従来の水中不分離性コンクリート組成物よりも少ない増粘剤で高い水中不分離性を示し、かつ、凝結時間が短縮された水中不分離性コンクリート組成物を提供する。【解決手段】セメントと、水と、増粘剤と、少なくとも亜硝酸カルシウムを含む促進剤と、分散剤とを含む水中不分離性コンクリート組成物であって、セメントの単位セメント量が３００〜５００ｋｇ／ｍ３であり、水の単位水量が１７０〜２００ｋｇ／ｍ３であり、増粘剤の配合量が単位水量に対して０．７〜１．２質量％であり、促進剤の配合量が単位セメント量に対して０．５〜３．０質量％であり、かつ、分散剤の配合量が単位セメント量に対して４．０質量％以下であることを特徴とする、水中不分離性コンクリート組成物である。【選択図】なし
NON-DISPERSIBLE UNDERWATER CONCRETE COMPOSITION AND HARDENED BODY THEREOF, AND METHOD FOR PRODUCING NON-DISPERSIBLE UNDERWATER CONCRETE
水中不分離性コンクリート組成物およびその硬化体、ならびに水中不分離性コンクリート組成物の製造方法
NAGASHIO YASUHIRO (author) / TAKESHITA EIZO (author) / SUEOKA EIJI (author) / TAKENAKA HIROSHI (author)
2016-07-11
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
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