Special admixture for reducing elasticity of sprayed concrete as well as preparation method and application of special admixture

The invention discloses a special admixture for reducing elasticity of sprayed concrete as well as a preparation method and application thereof, and belongs to the technical field of concrete. The special admixture for reducing the elasticity of the sprayed concrete comprises the following component...

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Bibliographische Detailangaben
Hauptverfasser: YU CHAO, GUI JINHUI, JIA MEIRONG, LIU KANG, LYU TAO, HUO DAOPING, LI QI, FU CHAO, SHI HUA, WEI FENG, CHEN LIBING
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention discloses a special admixture for reducing elasticity of sprayed concrete as well as a preparation method and application thereof, and belongs to the technical field of concrete. The special admixture for reducing the elasticity of the sprayed concrete comprises the following components in parts by mass: 25-40 parts of silica fume; 25 to 40 parts of slag powder; 1-5 parts of phenolic resin powder; 0.1 to 1 part of glass fiber; 0.1 to 1 part of polypropylene monofilament fiber; 0.1 to 1 part of calcium sulfate; and 0.01 to 1 part of polyvinyl alcohol powder. The special admixture for reducing the elasticity of the sprayed concrete solves the problems that the sprayed concrete is high in rebound rate, serious in pollution, low in early strength and high in raw material cost; and the method is wide in application range and can be suitable for projects such as tunnel primary support, roadbed high slope protection and foundation pit temporary support. 本发明公开了一种喷射混凝土减弹专用掺和料及其制备方法和应用,属于混凝土技术领域。所述的所述的喷射混