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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 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凝土减弹专用掺和料，包括按以下质量分数计的成分组成：硅灰25～40份；矿渣粉25～40份；酚醛树脂粉末1～5份；玻璃纤维0.1～1份；聚丙烯单丝纤维0.1～1份；硫酸钙0.1～1份；聚乙烯醇粉末0.01～1份。本发明提供的喷射混凝土减弹专用掺和料，解决了喷射混凝土回弹率高，污染严重，早期强度偏低、原材料成本高的问题；适用范围广泛，可适用于隧道初期支护，路基高边坡防护、基坑临时支护等工程。
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 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凝土减弹专用掺和料，包括按以下质量分数计的成分组成：硅灰25～40份；矿渣粉25～40份；酚醛树脂粉末1～5份；玻璃纤维0.1～1份；聚丙烯单丝纤维0.1～1份；硫酸钙0.1～1份；聚乙烯醇粉末0.01～1份。本发明提供的喷射混凝土减弹专用掺和料，解决了喷射混凝土回弹率高，污染严重，早期强度偏低、原材料成本高的问题；适用范围广泛，可适用于隧道初期支护，路基高边坡防护、基坑临时支护等工程。
Special admixture for reducing elasticity of sprayed concrete as well as preparation method and application of special admixture
一种喷射混凝土减弹专用掺和料及其制备方法和应用
CHEN LIBING (author) / FU CHAO (author) / WEI FENG (author) / HUO DAOPING (author) / LI QI (author) / SHI HUA (author) / YU CHAO (author) / LIU KANG (author) / JIA MEIRONG (author) / GUI JINHUI (author)
2024-08-13
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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