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中文摘要：
基于寒冷盐碱地区的工程环境与混凝土的配制特点，以Fick第二定律修正模型为原型，通过试验数据分析和查阅文献取值建立了引气粉煤灰混凝土的氯离子扩散模型，经游程检验法检验，其相关关系显著．扩散模型体现了混凝土的氯离子结合能力、氯离子扩散系数的时间依赖性、混凝土本体结构劣化、以及水灰比、含气量和粉煤灰掺量三个参数对氯离子扩散的影响，扩展了氯离子扩散实际影响因素的范围，增强了适用性，并能显著表征引气粉煤灰混凝土的氯离子扩散性质．
英文摘要：
Based on the environmental feature and the compounding characteristic of concrete in cold saline - alkaline （SA） zone and Fiek Second Law, orthogonal experiment and investigating references were carried out to establish a chloride diffusion model of air - entraining fly ash concrete. The run test method was applied to test the model. The result shows that its relativity is significant. Considering the influence of combining chloride of concrete, time dependence of chloride diffusion coefficient, structure degradation of concrete, water - cement ratio, entrained air content and content of fly ash, the chloride diffusion model, is comprehensive and applicable, and it can describe the chloride diffusion performance of air - entraining fly ash concrete significantly.
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