【摘要】 阐述了混凝土近表层区域特性及其与混凝土内部间的异同,总结了国内外在混凝土表层区域特性、微细观结构损伤和劣化机理及过程等方面研究成果。分析表明,混凝土表层区域明显有别与混凝土内部本体,主要体现为组成、微观结构和性能等方面。然而,现有研究多忽视混凝土表层区域特性且将其等同于混凝土内部本体,从而导致混凝土耐久性预测结果与实际情况偏差较大。此外,有关混凝土耐久性研究还应考虑混凝土表层区域的环境荷载效应和离子传输机理及模式等。更多还原

【Abstract】 The similarities and differences between concrete surface cover and internal body were elaborated.Simultaneously,the research achievements of concrete surface cover,including surface characteristic,micro structure,deterioration mechanism,were concluded.The results manifest that there are plenty of similarities and differences between surface cover and internal body of concrete.However,the existing researches mostly regard the both as the same,which results the predicting outcomes of concrete durablity diverging the real facts.Moreover,the environmental load effect and medium transmission mechanism need to be investigated in more detail.更多还原