A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
METHOD FOR PRODUCING PRECAST CONCRETE MEMBER
To produce a precast concrete member having quality equal to that of the one obtained by performing three days wet curing with water fed from the outside without requiring three days wet curing.SOLUTION: Provided is a method for producing a precast concrete member comprising: a step A where cement such as high early strength portland cement, blast furnace slag fine powder as an additive material, a fine aggregate containing a porous aggregate beforehand included with water as a self-curing agent, a coarse aggregate, water and an additive agent are kneaded, and the same is driven into a flask; a step B where, after the installation of blast furnas slag concrete, moist curing is performed; and a step where, after the moist curing and flask removal, air dried curing is performed without performing three days wet curing with water fed from the outside, thus the blast furnace slag concrete is subjected to wet curing from the inside with the water released from the porous aggregate.SELECTED DRAWING: Figure 1
【課題】外部から供給された水による３日間湿潤養生を行って得られたものと同等の品質を有するプレキャスト・コンクリート部材を、３日間湿潤養生を要することなく製造する。【解決手段】このプレキャスト・コンクリート部材の製造方法は、早強ポルトランドセメントなどのセメントと、混和材としての高炉スラグ微粉末と、自己養生材として予め水を含ませた多孔質骨材を含む細骨材と、粗骨材と、水と、混和剤を混錬し、型枠に打ち込む工程Ａと、高炉スラグコンクリートの打設後、給温養生を行う工程Ｂと、給温養生および脱枠後、外部から供給された水による３日間湿潤養生を行わずに気乾養生を行うことによって、多孔質骨材から放出される水により高炉スラグコンクリートを内部から湿潤養生する。【選択図】図１
METHOD FOR PRODUCING PRECAST CONCRETE MEMBER
To produce a precast concrete member having quality equal to that of the one obtained by performing three days wet curing with water fed from the outside without requiring three days wet curing.SOLUTION: Provided is a method for producing a precast concrete member comprising: a step A where cement such as high early strength portland cement, blast furnace slag fine powder as an additive material, a fine aggregate containing a porous aggregate beforehand included with water as a self-curing agent, a coarse aggregate, water and an additive agent are kneaded, and the same is driven into a flask; a step B where, after the installation of blast furnas slag concrete, moist curing is performed; and a step where, after the moist curing and flask removal, air dried curing is performed without performing three days wet curing with water fed from the outside, thus the blast furnace slag concrete is subjected to wet curing from the inside with the water released from the porous aggregate.SELECTED DRAWING: Figure 1
【課題】外部から供給された水による３日間湿潤養生を行って得られたものと同等の品質を有するプレキャスト・コンクリート部材を、３日間湿潤養生を要することなく製造する。【解決手段】このプレキャスト・コンクリート部材の製造方法は、早強ポルトランドセメントなどのセメントと、混和材としての高炉スラグ微粉末と、自己養生材として予め水を含ませた多孔質骨材を含む細骨材と、粗骨材と、水と、混和剤を混錬し、型枠に打ち込む工程Ａと、高炉スラグコンクリートの打設後、給温養生を行う工程Ｂと、給温養生および脱枠後、外部から供給された水による３日間湿潤養生を行わずに気乾養生を行うことによって、多孔質骨材から放出される水により高炉スラグコンクリートを内部から湿潤養生する。【選択図】図１
METHOD FOR PRODUCING PRECAST CONCRETE MEMBER
プレキャスト・コンクリート部材の製造方法
SUZUKI MASAHIRO (author) / NAKASE HIROICHI (author)
2019-04-11
Patent
Electronic Resource
Japanese
METHOD FOR PRODUCING PRECAST CONCRETE MEMBER, AND PRECAST CONCRETE MEMBER
| European Patent Office | 2021
| European Patent Office | 2023
PRECAST CONCRETE MEMBER CONNECTING METHOD AND PRECAST CONCRETE MEMBER
| European Patent Office | 2015
| European Patent Office | 2022
PRECAST CONCRETE MEMBER AND MANUFACTURING METHOD OF PRECAST CONCRETE MEMBER
| European Patent Office | 2024