Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
EXPANSIVE MATERIAL FOR PRECAST CONCRETE, MANUFACTURING METHOD THEREFOR AND MANUFACTURING METHOD OF PRECAST CONCRETE
PROBLEM TO BE SOLVED: To provide an expansive material for precast concrete capable of adding stable expansion coefficient even with fluctuating pre-standing time from mixing concrete to conducting vapor curing, a manufacturing method therefor and a manufacturing method of a precast concrete.SOLUTION: There are provided an expansive material for precast concrete by blending total 100 part of 30 to 70 part of an expansive material exhibiting expansion coefficient, which is expansion coefficient of a concrete test body measured at 20°C according to a JISA 6202B method, at material age of 1 day to that at material age of 7 days of 75% or more and 30 to 70 part of an expansive material exhibiting 30 to 70% and a manufacturing method therefor, and a manufacturing method of a precast concrete using the expansive admixture for precast concrete. There is provided an expansive material which is not limited to but for example a commercially available expansive material used for cement and an expansive material such as ettringite-based, lime-based and ettringite and lime-based expansive material.SELECTED DRAWING: None
【課題】コンクリートの練り混ぜから蒸気養生を行うまでの前置時間が変動しても、安定した膨張率を付与できるプレキャストコンクリート用膨張材、その製造方法およびプレキャストコンクリートの製造方法を提供。【解決手段】ＪＩＳＡ６２０２Ｂ法に準拠して２０℃で測定したコンクリート試験体の膨張率であって、材齢７日の膨張率に対して材齢１日での膨張率が７５％以上を示す膨張材を３０〜７０部と３０〜７０％を示す膨張材を３０〜７０部を合計１００部となるように配合したプレキャストコンクリート用膨張材およびその製造方法、ならびに前記プレキャストコンクリート用膨張材を用いてなるプレキャストコンクリートの製造方法。特に限定されるものではなく、例えば、セメントに使用される市販の膨張材であり、エトリンガイト系、石灰系、エトリンガイト・石灰系膨張材などの膨張材。【選択図】なし
EXPANSIVE MATERIAL FOR PRECAST CONCRETE, MANUFACTURING METHOD THEREFOR AND MANUFACTURING METHOD OF PRECAST CONCRETE
PROBLEM TO BE SOLVED: To provide an expansive material for precast concrete capable of adding stable expansion coefficient even with fluctuating pre-standing time from mixing concrete to conducting vapor curing, a manufacturing method therefor and a manufacturing method of a precast concrete.SOLUTION: There are provided an expansive material for precast concrete by blending total 100 part of 30 to 70 part of an expansive material exhibiting expansion coefficient, which is expansion coefficient of a concrete test body measured at 20°C according to a JISA 6202B method, at material age of 1 day to that at material age of 7 days of 75% or more and 30 to 70 part of an expansive material exhibiting 30 to 70% and a manufacturing method therefor, and a manufacturing method of a precast concrete using the expansive admixture for precast concrete. There is provided an expansive material which is not limited to but for example a commercially available expansive material used for cement and an expansive material such as ettringite-based, lime-based and ettringite and lime-based expansive material.SELECTED DRAWING: None
【課題】コンクリートの練り混ぜから蒸気養生を行うまでの前置時間が変動しても、安定した膨張率を付与できるプレキャストコンクリート用膨張材、その製造方法およびプレキャストコンクリートの製造方法を提供。【解決手段】ＪＩＳＡ６２０２Ｂ法に準拠して２０℃で測定したコンクリート試験体の膨張率であって、材齢７日の膨張率に対して材齢１日での膨張率が７５％以上を示す膨張材を３０〜７０部と３０〜７０％を示す膨張材を３０〜７０部を合計１００部となるように配合したプレキャストコンクリート用膨張材およびその製造方法、ならびに前記プレキャストコンクリート用膨張材を用いてなるプレキャストコンクリートの製造方法。特に限定されるものではなく、例えば、セメントに使用される市販の膨張材であり、エトリンガイト系、石灰系、エトリンガイト・石灰系膨張材などの膨張材。【選択図】なし
EXPANSIVE MATERIAL FOR PRECAST CONCRETE, MANUFACTURING METHOD THEREFOR AND MANUFACTURING METHOD OF PRECAST CONCRETE
プレキャストコンクリート用膨張材、その製造方法およびプレキャストコンクリートの製造方法
HONMA KAZUYA (Autor:in) / KIMURA JUNICHI (Autor:in) / HIGUCHI TAKAYUKI (Autor:in)
12.01.2017
Patent
Elektronische Ressource
Japanisch
IPC:
C04B
Kalk
,
LIME
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