A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
CONCRETE COMPOSITION AND CONCRETE
To provide a concrete composition capable of improving flowability at a tip side of a pressure-feeding pipe.SOLUTION: A concrete composition comprises: a cement-containing binder; water which is contained in an amount of 150 kg/m3 or more and 185 kg/m3 or less with a weight ratio of 15% or more and 52% or less relative to the binder; coarse aggregate which has an absolute volume of 300 L/m3 or more and 380 L/m3 or less; and an artificial lightweight fine aggregate having an absolute volume of 97 L/m3 or more and 221 L/m3 or less. This invention makes it possible to reduce the decline in the flowability of concrete at a tip side of a concrete pressure-feeding pipe by using the artificial lightweight fine aggregate having the absolute volume of 97 L/m3 or more and 221 L/m3 or less in the concrete.SELECTED DRAWING: Figure 2
【課題】圧送配管の先端側における流動性を向上できるコンクリート組成物を提供すること。【解決手段】コンクリート組成物は、セメントを含む結合材と、結合材に対する重量比が１５％以上５２％以下である１５０ｋｇ／ｍ３以上１８５ｋｇ／ｍ３以下の水と、絶対容積が３００Ｌ／ｍ３以上３８０Ｌ／ｍ３以下の粗骨材と、絶対容積が９７Ｌ／ｍ３以上２２１Ｌ／ｍ３以下の人工軽量細骨材と、を含有する。本発明によれば、絶対容積が９７Ｌ／ｍ３以上２２１Ｌ／ｍ３以下の人工軽量細骨材をコンクリートに使用することで、コンクリート圧送管の先端側におけるコンクリートの流動性の低下を抑制できる。【選択図】図２
CONCRETE COMPOSITION AND CONCRETE
To provide a concrete composition capable of improving flowability at a tip side of a pressure-feeding pipe.SOLUTION: A concrete composition comprises: a cement-containing binder; water which is contained in an amount of 150 kg/m3 or more and 185 kg/m3 or less with a weight ratio of 15% or more and 52% or less relative to the binder; coarse aggregate which has an absolute volume of 300 L/m3 or more and 380 L/m3 or less; and an artificial lightweight fine aggregate having an absolute volume of 97 L/m3 or more and 221 L/m3 or less. This invention makes it possible to reduce the decline in the flowability of concrete at a tip side of a concrete pressure-feeding pipe by using the artificial lightweight fine aggregate having the absolute volume of 97 L/m3 or more and 221 L/m3 or less in the concrete.SELECTED DRAWING: Figure 2
【課題】圧送配管の先端側における流動性を向上できるコンクリート組成物を提供すること。【解決手段】コンクリート組成物は、セメントを含む結合材と、結合材に対する重量比が１５％以上５２％以下である１５０ｋｇ／ｍ３以上１８５ｋｇ／ｍ３以下の水と、絶対容積が３００Ｌ／ｍ３以上３８０Ｌ／ｍ３以下の粗骨材と、絶対容積が９７Ｌ／ｍ３以上２２１Ｌ／ｍ３以下の人工軽量細骨材と、を含有する。本発明によれば、絶対容積が９７Ｌ／ｍ３以上２２１Ｌ／ｍ３以下の人工軽量細骨材をコンクリートに使用することで、コンクリート圧送管の先端側におけるコンクリートの流動性の低下を抑制できる。【選択図】図２
CONCRETE COMPOSITION AND CONCRETE
コンクリート組成物およびコンクリート
OTA TAKASHI (author) / KUROIWA SHUSUKE (author)
2022-05-27
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
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