通过人工配制生物代谢酸侵蚀液，并设置2m/s 的水流速度，从侵蚀深度、氢氧化钙质量损失率、单位表面质量损失三方面进行水泥净浆劣化评价; 并通过对比单因素有机
酸浸泡侵蚀，研究了水流冲刷对净浆劣化的加速程度． 结果表明: 耦合作用下的侵蚀深度是单因素作用的2． 72 倍，耦合作用下的单位表面质量损失是单因素作用的3． 77 倍; 有机酸侵蚀和水流冲刷相互影响与促进，加剧了水泥基材料的劣化; 单位表面质量损失充分体现了耦合作用下有机酸侵蚀的化学作用和水流冲刷的物理作用，更适用于耦合作用下水泥基材料的劣化评价．

The deterioration of cement paste exposed to artificial organic acid solution involved in biological metabolism and a scour of 2m/s was evaluated,in terms of the erosion depth,the decrease of calcium hydroxide content and the loss of mass per unit area of sample surface.The acceleration of deterioration of cement paste caused by the scour of solution was investigated by comparing to the deterioration under static immersion.The results show that ( 1) the erosion depth and the loss of mass per unit area of sample surface under the coupled effects of organic acids and scour are 2. 72 times and 3. 77 times those in static organic acid solutions,respectively; ( 2) the coupled effects of the organic acids and the scour significantly accelerate the deterioration of cement paste; and ( 3) the loss of mass per unit area of sample surface fully reflects the chemical erosion effect of the organic acids and the physical effect of the scour,meaning that this index is suitable to evaluate the deterioration of cement-based materials.