Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Sprayed concrete capable of reducing rebound rate of dry-spraying method concrete and construction process of sprayed concrete
The invention relates to sprayed concrete capable of reducing the rebound rate of dry-spraying concrete and a construction technology of the sprayed concrete, belongs to the technical field of tunnel engineering construction, and can solve the problems of material waste, dust concentration increase and the like caused by rebound in the concrete dry-spraying construction process. The sprayed concrete is prepared from cement, sand, broken stone, water and an accelerator according to the mixing ratio of 1: 1.73: 1.87: 0.41: 0.24, and the ratio of the cement to the sand to the broken stone to the water to the accelerator to the cement to the sand to the broken stone to the water to the accelerator is 1: 1.73: 1.87: 0.41: 0.24. The method is mainly suitable for a tunnel primary support dry spraying method concrete spraying construction process. The invention further provides a sprayed concrete construction technology based on the mix proportion, by adopting the sprayed concrete mix proportion and the construction technology, a dry spraying machine is adopted for spraying and mixing operation on a tunnel primary support, the springback rate of sprayed concrete is remarkably reduced, meanwhile, the spraying and mixing quality is good, and the construction efficiency is improved. And the spraying cost and the later-stage supplementary spraying procedure are saved, the construction efficiency is improved, and good economic benefits are achieved.
一种降低干喷法混凝土回弹率的喷射混凝土及其施工工艺，属于隧道工程施工技术领域，可解决混凝土干喷施工过程中，因发生回弹而造成的材料的浪费以及增加粉尘浓度等问题，所述喷射混凝土配合比为水泥：砂：碎石：水：速凝剂=1:1.73:1.87:0.41:0.24，主要适用于隧道初期支护干喷法喷射混凝土施工工艺。本发明还提供了一种基于上述配合比下的喷射混凝土施工工艺，通过采用本发明所述的喷射混凝土配合比及施工工艺，对隧道初期支护采用干喷机进行喷混作业，显著降低了喷射混凝土的回弹率，同时喷混质量较好，节省了喷射成本及后期补喷工序，提高了施工效率，具有较好的经济效益。
Sprayed concrete capable of reducing rebound rate of dry-spraying method concrete and construction process of sprayed concrete
The invention relates to sprayed concrete capable of reducing the rebound rate of dry-spraying concrete and a construction technology of the sprayed concrete, belongs to the technical field of tunnel engineering construction, and can solve the problems of material waste, dust concentration increase and the like caused by rebound in the concrete dry-spraying construction process. The sprayed concrete is prepared from cement, sand, broken stone, water and an accelerator according to the mixing ratio of 1: 1.73: 1.87: 0.41: 0.24, and the ratio of the cement to the sand to the broken stone to the water to the accelerator to the cement to the sand to the broken stone to the water to the accelerator is 1: 1.73: 1.87: 0.41: 0.24. The method is mainly suitable for a tunnel primary support dry spraying method concrete spraying construction process. The invention further provides a sprayed concrete construction technology based on the mix proportion, by adopting the sprayed concrete mix proportion and the construction technology, a dry spraying machine is adopted for spraying and mixing operation on a tunnel primary support, the springback rate of sprayed concrete is remarkably reduced, meanwhile, the spraying and mixing quality is good, and the construction efficiency is improved. And the spraying cost and the later-stage supplementary spraying procedure are saved, the construction efficiency is improved, and good economic benefits are achieved.
一种降低干喷法混凝土回弹率的喷射混凝土及其施工工艺，属于隧道工程施工技术领域，可解决混凝土干喷施工过程中，因发生回弹而造成的材料的浪费以及增加粉尘浓度等问题，所述喷射混凝土配合比为水泥：砂：碎石：水：速凝剂=1:1.73:1.87:0.41:0.24，主要适用于隧道初期支护干喷法喷射混凝土施工工艺。本发明还提供了一种基于上述配合比下的喷射混凝土施工工艺，通过采用本发明所述的喷射混凝土配合比及施工工艺，对隧道初期支护采用干喷机进行喷混作业，显著降低了喷射混凝土的回弹率，同时喷混质量较好，节省了喷射成本及后期补喷工序，提高了施工效率，具有较好的经济效益。
Sprayed concrete capable of reducing rebound rate of dry-spraying method concrete and construction process of sprayed concrete
一种降低干喷法混凝土回弹率的喷射混凝土及其施工工艺
DONG JIANMING (Autor:in) / GU JIANWEI (Autor:in) / LI PENG (Autor:in) / BAI YU (Autor:in) / ZHANG MINGLONG (Autor:in) / ZHANG RUIQING (Autor:in) / LIU HUI (Autor:in) / MA WEIPING (Autor:in) / MA XIPING (Autor:in) / ZHANG HUA (Autor:in)
25.11.2022
Patent
Elektronische Ressource
Chinesisch
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