A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
ADMIXTURE FOR CONCRETE AND EXPANSIVE CONCRETE
To provide an admixture for concrete or the like that improves the freeze-thaw resistance of expansive concrete.SOLUTION: The present invention relates to an admixture for concrete that contains at least paraffin, a nitrite, and an expansion material having a particle distribution in which particles having a particle size of 10 μm or less are contained in an amount of 40 to 80 mass%, particles having a particle size greater than 10 μm and 100 μm or less are contained in an amount of 20 to 60 mass%, and particles having a particle size greater than 100 μm and 150 μm or less are contained in an amount of 0 to 6 mass%. The present invention also relates to an admixture for concrete in which the ratio of expansion material: paraffin: nitrite is 15 to 35:0.65 to 4.5:0.5 to 3.6 (mass ratio).SELECTED DRAWING: None
【課題】本発明は、膨張コンクリートの凍結融解抵抗性が向上するコンクリート用混和剤等を提供する。【解決手段】本発明は、下記の粒度分布を有する膨張材、パラフィン、および亜硝酸塩を少なくとも含む、コンクリート用混和剤である。膨張材：粒径が１０μｍ以下の粒子が４０～８０質量％、１０μｍを超え１００μｍ以下の粒子が２０～６０質量％、および１００μｍを超え１５０μｍ以下の粒子が０～６質量％である膨張材また、本発明は、前記膨張材、パラフィン、および亜硝酸塩の割合が、膨張材：パラフィン：亜硝酸塩＝１５～３５：０．６５～４．５：０．５～３．６（質量比）である、コンクリート用混和剤等である。【選択図】なし
ADMIXTURE FOR CONCRETE AND EXPANSIVE CONCRETE
To provide an admixture for concrete or the like that improves the freeze-thaw resistance of expansive concrete.SOLUTION: The present invention relates to an admixture for concrete that contains at least paraffin, a nitrite, and an expansion material having a particle distribution in which particles having a particle size of 10 μm or less are contained in an amount of 40 to 80 mass%, particles having a particle size greater than 10 μm and 100 μm or less are contained in an amount of 20 to 60 mass%, and particles having a particle size greater than 100 μm and 150 μm or less are contained in an amount of 0 to 6 mass%. The present invention also relates to an admixture for concrete in which the ratio of expansion material: paraffin: nitrite is 15 to 35:0.65 to 4.5:0.5 to 3.6 (mass ratio).SELECTED DRAWING: None
【課題】本発明は、膨張コンクリートの凍結融解抵抗性が向上するコンクリート用混和剤等を提供する。【解決手段】本発明は、下記の粒度分布を有する膨張材、パラフィン、および亜硝酸塩を少なくとも含む、コンクリート用混和剤である。膨張材：粒径が１０μｍ以下の粒子が４０～８０質量％、１０μｍを超え１００μｍ以下の粒子が２０～６０質量％、および１００μｍを超え１５０μｍ以下の粒子が０～６質量％である膨張材また、本発明は、前記膨張材、パラフィン、および亜硝酸塩の割合が、膨張材：パラフィン：亜硝酸塩＝１５～３５：０．６５～４．５：０．５～３．６（質量比）である、コンクリート用混和剤等である。【選択図】なし
ADMIXTURE FOR CONCRETE AND EXPANSIVE CONCRETE
コンクリート用混和剤、および膨張コンクリート
NAGASHIO SEISUKE (author) / MARUTA HIROSHI (author)
2022-05-27
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
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