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引入相变储能材料及梯度功能材料设计方法,对传统水泥混凝土路面板结构进行防冻、耐磨功能设计,开展路面板模型试验研究。采取步冷试验方法,将优选出的复合相变储能材料封装入高强度无缝钢管中,制成500 mm×400 mm×80 mm的水泥混凝土路面板模型,进行模型的防冻性能和耐磨性能试验。结果表明:优选的相变材料体系相变温度点可控制在5℃左右,并产生液-固相变过程,放出热量,起到了较好的融冰效果,延缓或控制了路面板模型表面的低温冰冻现象;表面层材料耐磨性优良,28 d磨耗率仅为标准限值的51.9%;相变功能层中钢管的加筋作用可防止主体层和表面层材料之间体积变形的非一致性,强化了界面的稳定性。
The phase change energy storage material and the gradient function material design method are introduced to design the traditional cement concrete pavement plate structure with antifreeze and wear resistance and carry out pavement plate model test research. A step cooling test method is adopted to encapsulate the preferred composite phase change energy storage material into high strength seamless steel pipe to make a cement concrete pavement slab model of 500 mm × 400 mm × 80 mm with antifreezing properties and wear resistance Performance test. The results show that the phase transition point of the phase change material system can be controlled at about 5 ℃, and the liquid-solid phase change process is produced, releasing the heat and playing a good ice melting effect, delaying or controlling the surface of the pavement model Low temperature freezing phenomenon; surface layer material wear resistance, 28 d wear rate of only 51.9% of the standard limit; phase change function of the steel pipe reinforcement function to prevent the body layer and the surface layer of material between the volume deformation inconsistent Sex, and strengthen the stability of the interface.