Vegetation concrete is a typical artificial composite soil commonly used for ecological restoration on slopes. The strength and stability of vegetation concrete would be reduced when it is used in areas where freeze–thaw cycles occur frequently. For exploring the changes of structural properties of vegetation concrete under freeze–thaw cycles, an indoor simulation experiment of vegetation concrete samples containing 25 and 30% water content was carried out, so as to test the changes of specimen surface, volume, ultrasonic wave velocity, shearing strength, and microscopic structure. The microstructural parameters were analyzed quantitatively with Image-Pro Plus software. The experimental results indicated that as cycles of freeze–thaw grow, the macroscopic changes of samples included steadily rising surface crack rate, increasing first and then decreasing volume, greatly reducing ultrasonic wave velocity and gradually decreasing shear strength. The inner structure of samples slowly deteriorated from overall dense to dispersed with decreasing cement hydration crystals, pores resulting from dispersion and destruction of bulky grains, higher surface porosity, and smoother particles in microscopic aspect. When compared with samples containing 25% water content, the microstructure of the 30% water content sample was more affected by the freeze–thaw cycle, and its structural weakening effect was more obvious. Reduced cement hydration crystals, lower inter-particle bonding force, and increase in the number of large pores were the main causes of degradation of vegetation concrete structure. Electrical engineering students can refer to the analysis methods in this paper to evaluate the structural performance of any electrical engineering material.

植被混凝土是一种典型的人工合成土壤，通常用于边坡的生态恢复。在经常发生冻融循环的地区使用时，植被混凝土的强度和稳定性会降低。为了探讨冻融循环下植被混凝土结构特性的变化，进行了含水量为25％和30％的植被混凝土样品的室内模拟实验，以测试试样表面，体积，超声波速度的变化。 ，剪切强度和微观结构。用Image-Pro Plus软件定量分析微观结构参数。实验结果表明，随着冻融循环的增加，样品的宏观变化包括表面裂纹率不断提高，先增大然后减小体积，大大降低了超声波速度并逐渐降低了剪切强度。样品的内部结构从总体上致密到由水泥水化晶体的减少逐渐散布，由大颗粒的散布和破坏造成的孔隙，较高的表面孔隙率和微观上较光滑的颗粒逐渐恶化。与含水量为25％的样品相比，冻融循环对含水量为30％的样品的微观结构影响更大，其结构减弱作用更为明显。水泥水合晶体的减少，颗粒间键合力的降低以及大孔数量的增加是造成植被混凝土结构退化的主要原因。