Effect of Temperature on Mechanical Performance and Tensoresistivity of a New Sensor-Enabled Geosynthetic Material
Effect of Temperature on Mechanical Performance and Tensoresistivity of a New Sensor-Enabled Geosynthetic Material
复制标题
温度对新型传感器土工合成材料机械性能和拉伸电阻率的影响
DOI：
10.1061/(asce)mt.1943-5533.0002698
复制
发表时间：
2019-06-01
影响因子：
3.2
通讯作者：
Cui, She-qiang
中科院分区：
文献类型：
--
作者：
Cui, Xin-zhuang;Li, Jun;Cui, She-qiang
在岩土工程中，土工合成材料以其众多的优点被广泛用作加筋材料。此外，其应变监测是越来越重要的，以确保安全的加固岩土结构。因此，开发和制造了一种新的传感器使能土工合成材料，称为传感器使能土工带（SEGB）。SEGB在实现应变自监测的同时具有加固功能。它的本质是一种导电聚合物，它是由超级导电炭黑（CB）和高密度聚乙烯（HDPE）制成的。为了研究温度对SEGB的机械性能和拉伸电阻率的影响，在其使用温度范围（-20 ° C至40 ° C）之间进行了两种类型的拉伸试验。结果表明，SEGB的抗拉强度随温度的升高先下降后趋于稳定。然而，断裂伸长率一致地随着温度的升高而增加。电阻测量结果表明，随着温度的升高，SEGB的张阻响应变得更加灵敏。考虑温度效应，提出了一种非线性的张阻率校准模型，以保证SEGB在不同环境温度下的应用。
In geotechnical engineering, geosynthetics are widely used as a reinforcement material for its numerous advantages. Moreover, its strain monitoring is increasingly crucial to ensure the safety of reinforced geotechnical structures. Therefore, a new sensor-enabled geosynthetic material named sensor-enabled geobelts (SEGB) was developed and manufactured. The SEGB has the reinforced function while achieving self-monitoring of strain. Its essence is a kind of conductive polymer, which is made from super conductive carbon black (CB) and high-density polyethylene (HDPE). To study the effects of temperature on the mechanical performance and the tensoresistivity of SEGB, two types of tensile tests were performed between its service temperature ranges (-20 degrees C to 40 degrees C). The results demonstrate that the tensile strength of SEGB first decreases with temperature and then becomes stable. However, the elongation at break consistently increases with the increase of the temperature. And the measurement results of the electrical resistance indicate the tensoresistivity response of SEGB become more sensitive with the temperature increases. Considering temperature effects, a nonlinear calibration model of the tensoresistivity was proposed to ensure the application of SEGB at different ambient temperatures.