盾构机盾尾密封油脂粘附性能试验研究  

Experimental Study on the Adhesion Performance of Shield Tail Sealing Grease

作　　者：耿靖玮 GENG Jingwei(Tiezheng Test Inspection Technology Co.Ltd.,Jinan Shandong 250200,China)

机构地区：[1]铁正检测科技有限公司,山东济南250200

出　　处：《铁道建筑技术》2024年第8期27-30,共4页Railway Construction Technology

基　　金：中铁十四局集团有限公司科技研发计划项目(913700001630559891201903);中国合作贸易协会标准化工作委员会团体标准项目计划(T/CC-JH202201)。

摘　　要：研究盾构机盾尾密封油脂对金属、砂浆粘附性能。选择(70±2)℃24 h、(70±2)℃5 h、(25±2)℃24 h、(25±2)℃5 h下的4种测试条件,对比GB/T 13477.6及SH/T 0424两种标准下垂度测试方法,验证油脂对金属的粘附性能。测试结果表明:使用GB/T 13477.6的测试工艺不适用于油脂材料;采用SH/T 0424测试装置,在(25±2)℃5 h测试条件下可得到清晰的测试结果;以此条件测试14种盾尾密封油脂,结果显示手涂型油脂对金属粘附性高于泵送型。采用L9(3~4)正交试验,测试油脂质量、持荷重量、持荷时间对油脂与砂浆粘附性影响,通过极差分析及方差分析,证明持荷重量对测试结果具有高显著影响,持荷时间、油脂质量不具有影响,最终确定油脂砂浆粘附性测试条件为:5~10 g油脂,持荷10 kg,时间30 s。The adhesion of shield tail sealing grease to metals and mortar is studied.Four testing conditions are selected under(70±2)℃for 24 hours,(70±2)℃for 5 hours,(25±2)℃for 24 hours,and(25±2)℃for 5 hours,and the sag testing methods of GB/T 13477.6 and SH/T 0424 are compared to verify the adhesion of sealing grease to metals.The test results indicate that the testing process using GB/T 13477.6 is not suitable for sealing grease materials;using the SH/T 0424 testing device,clear test results can be obtained under the test conditions of(25±2)℃for 5 hours.Under these conditions,14 types of shield tail sealing grease are tested,and the results show that the hand applied grease has higher adhesion to metals than the pumping type.L9(34)orthogonal experiment is selected to test the influence of oil quality,load holding weight,and load holding time on the adhesion performance between grease and mortar.Through range analysis and analysis of variance,it is proven that the weight of the load has a highly significant impact on the test results,while the load holding time and oil quality have no effect.The final determination of the adhesion test conditions for grease to mortar is 5-10 g of grease,10 kg of load,and 30 s of time.

关 键 词：盾尾密封油脂 正交试验 粘附性 拉伸粘结强度 下垂度 

分 类 号：U455.39[建筑科学—桥梁与隧道工程]