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由于水分是引起混凝土劣化的主要原因之一,混凝土含水量的检测问题也成为近年来的研究热点。利用材料的毛细管效应设计了一个吸水试验装置来模拟混凝土中的水分传递。其主要目的是通过电磁(EM)导波监测水分在混凝土板中随时间的变化过程。混凝土的渗吸试验中使用了新的经验模型arctan(x),且以γ射线的测量结果作为试验的参考数据。结果显示,融合使用多层波导(WG)模型和探地雷达(GPR)检测,可以有效估计混凝土板的内部梯度曲线。
Since moisture is one of the main causes of concrete deterioration, the detection of concrete moisture content has become a research hotspot in recent years. The capillary effect of the material was used to design a water absorption test device to simulate the water transfer in concrete. Its main purpose is to monitor the evolution of moisture over time in concrete slabs through electromagnetic (EM) guided waves. A new empirical model, arctan (x), is used in the concrete infiltration test, and the gamma ray measurement is taken as the reference data of the test. The results show that the fusion of multilayer waveguide (WG) model and GPR detection can effectively estimate the internal gradient of concrete slab.