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A platform for research: civil engineering, architecture and urbanism
SPRAY CEMENT MORTAR AND SPRAY CEMENT CONCRETE
PROBLEM TO BE SOLVED: To provide a spray cement mortar and a spray cement concrete capable of securing stable setting time and high intensity expression after curing.SOLUTION: The spray cement mortar according to a first embodiment is provided which is obtained by blending cement, water, fine aggregate, a lime sulfur mixture of a retarder, and a quick curing additive containing calcium aluminate. The spray cement mortar according to a second embodiment is provided which is identical to the spray cement mortar according to the first embodiment except that the lime sulfur mixture is contained in an amount of 0.01-10 parts with respect 100 parts of the cement. The spray cement mortar according to a third embodiment is provided which is identical to the spray cement mortar according to the first or the second embodiment except that a liquid quick accelerator containing aluminum sulfate is blended in the spray cement mortar. The spray cement mortar according to a fourth embodiment is provided which is identical to the spray cement mortar according to the third embodiment except that the liquid quick accelerator contains at least one kind or more, selected from a fluorine raw material, diethanol amine, magnesium sulfate, oxalic acid, and urea. The spray cement mortar according to a fifth embodiment is provided which is identical to the spray cement mortar according to the fourth embodiment except that 5-35 parts of urea is contained with respect to 100 parts of the liquid quick accelerator. The spray cement concrete according to a sixth embodiment is provided which is identical to the spray cement mortar according to any of the first to fifth embodiment except that a coarse aggregate is blended in the spray cement concrete.SELECTED DRAWING: None
【課題】安定した凝結時間と硬化後の高い強度発現が確保できる吹付けセメントモルタル及び吹付けセメントコンクリートを提供する。【解決手段】セメントと、水と、細骨材と、凝結遅延剤の石灰硫黄合剤と、カルシウムアルミネートを含有する急硬性混和材とを配合してなる吹付けセメントモルタルであり、石灰硫黄合剤が、セメント１００部に対し０．０１〜１０部である前記吹付けセメントモルタルであり、硫酸アルミニウムを含有する液体急結剤を配合してなる前記吹付けセメントモルタルであり、液体急結剤が、さらに、フッ素原料、ジエタノールアミン、硫酸マグネシウム、シュウ酸、尿素から選ばれた少なくとも１種以上を含有してなる前記吹付けセメントモルタルであり、尿素を液体急結剤１００部中、５〜３５部含有してなる前記吹付けセメントモルタルであり、前記吹付けセメントモルタルに、粗骨材を配合してなる吹付けセメントコンクリート、である。【選択図】なし
SPRAY CEMENT MORTAR AND SPRAY CEMENT CONCRETE
PROBLEM TO BE SOLVED: To provide a spray cement mortar and a spray cement concrete capable of securing stable setting time and high intensity expression after curing.SOLUTION: The spray cement mortar according to a first embodiment is provided which is obtained by blending cement, water, fine aggregate, a lime sulfur mixture of a retarder, and a quick curing additive containing calcium aluminate. The spray cement mortar according to a second embodiment is provided which is identical to the spray cement mortar according to the first embodiment except that the lime sulfur mixture is contained in an amount of 0.01-10 parts with respect 100 parts of the cement. The spray cement mortar according to a third embodiment is provided which is identical to the spray cement mortar according to the first or the second embodiment except that a liquid quick accelerator containing aluminum sulfate is blended in the spray cement mortar. The spray cement mortar according to a fourth embodiment is provided which is identical to the spray cement mortar according to the third embodiment except that the liquid quick accelerator contains at least one kind or more, selected from a fluorine raw material, diethanol amine, magnesium sulfate, oxalic acid, and urea. The spray cement mortar according to a fifth embodiment is provided which is identical to the spray cement mortar according to the fourth embodiment except that 5-35 parts of urea is contained with respect to 100 parts of the liquid quick accelerator. The spray cement concrete according to a sixth embodiment is provided which is identical to the spray cement mortar according to any of the first to fifth embodiment except that a coarse aggregate is blended in the spray cement concrete.SELECTED DRAWING: None
【課題】安定した凝結時間と硬化後の高い強度発現が確保できる吹付けセメントモルタル及び吹付けセメントコンクリートを提供する。【解決手段】セメントと、水と、細骨材と、凝結遅延剤の石灰硫黄合剤と、カルシウムアルミネートを含有する急硬性混和材とを配合してなる吹付けセメントモルタルであり、石灰硫黄合剤が、セメント１００部に対し０．０１〜１０部である前記吹付けセメントモルタルであり、硫酸アルミニウムを含有する液体急結剤を配合してなる前記吹付けセメントモルタルであり、液体急結剤が、さらに、フッ素原料、ジエタノールアミン、硫酸マグネシウム、シュウ酸、尿素から選ばれた少なくとも１種以上を含有してなる前記吹付けセメントモルタルであり、尿素を液体急結剤１００部中、５〜３５部含有してなる前記吹付けセメントモルタルであり、前記吹付けセメントモルタルに、粗骨材を配合してなる吹付けセメントコンクリート、である。【選択図】なし
SPRAY CEMENT MORTAR AND SPRAY CEMENT CONCRETE
吹付けセメントモルタル及び吹付けセメントコンクリート
MUROKAWA TAKAMITSU (author) / HARA HIROFUMI (author) / WATANABE MASAAKI (author) / MORIOKA MINORU (author)
2016-07-21
Patent
Electronic Resource
Japanese
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