不同水泥取代率下喷射混凝土的抗压性能研究  

Study on the Compressive Performance of Shotcrete under Different Cement Replacement Rates

作　　者：何能方 韩磊 徐海岩 李阳[3] 丁国杰 樊洁 丁远灏 邱志鹏 HE Nengfang;HAN Lei;XU Haiyan;LI Yang;DING Guojie;FAN Jie;DING Yuanhao;QIU Zhipeng(Road&Bridge South China Engineering Co.,Ltd.,Zhongshan Guangdong 528405,China;School of Civil Engineering,Sichuan Agricultural University,Chengdu Sichuan 611830,China;School of Chemical Engineering,Tianjin University,Tianjin 300350,China;Tianjin Rumijiye New Materials Co.,Ltd.,Tianjin 300350,China)

机构地区：[1]中交路桥华南工程有限公司,广东中山528405 [2]四川农业大学土木工程学院,四川成都611830 [3]天津大学化工学院,天津300350 [4]天津如米基业新材料有限公司,天津300350

出　　处：《交通节能与环保》2024年第3期1-6,12,共7页Transport Energy Conservation & Environmental Protection

摘　　要：本文以广西平昭高速狮子山隧道为依托工程,创新研发纳米晶胶聚合物-高活性岩粉用于隧道喷射混凝土中,探究新型喷射混凝土的工作性能及抗压力学性能,并通过离散元数值模拟进行细观分析。研究提出,在30%水泥用量取代率下,纳米晶胶聚合物-高活性岩粉能够较好地提升喷射混凝土的早期强度,而在25%水泥用量取代率下的纳米晶胶聚合物-高活性岩粉对于喷射混凝土的后期强度能够发挥较好保障作用,纳米晶胶聚合物-高活性岩粉的联合作用能够在喷射混凝土中发挥较好的抗压性能及碳减排优势。This study takes the Shizishan Tunnel on the Pingzhao Expressway in Guangxi as a case study.It innovatively develops nano-crystalline gel polymer-high-activity rock powder for tunnel shotcrete.The research aims to explore the workability and compressive mechanical properties of the new shotcrete and conduct a detailed analysis through discrete element numerical simulation.The study suggests that with a 30%cement replacement rate,the nano-crystalline gel polymer-high-activity rock powder can effectively enhance the early strength of shotcrete on one hand.On the other hand,with a 25%cement replacement rate,the nano-crystalline gel polymer-high-activity rock powder plays a significant role in ensuring the later strength of shotcrete.The combined action of nano-crystalline gel polymer-high-activity rock powder can exhibit good compressive performance and carbon reduction advantages in shotcrete.

关 键 词：纳米晶胶聚合物 高活性岩粉 喷射混凝土 抗压性能 离散元数值模拟 

分 类 号：U416.216[交通运输工程—道路与铁道工程]