The analysis of the impact of Recycled Concrete Aggregates (RCA) on chloride ingress is of prime importance for the development of Recycled Aggregates Concrete. A coupled chemo-hydraulic multiscale model, using the Finite Element squared (FE2) method, has been developed, validated and calibrated. The constitutive equations using intrinsic parameters derived from laboratory experiments on concrete samples have been established. The findings indicate that the durability of Recycled Aggregates Concrete (RAC) could be comparable to that of Natural Aggregates Concrete (NAC) depending on the mixture quality and environmental conditions. The main difference in durability comes from the rate of diffusion with regards to the mortar paste adherent content.

中文翻译：

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不饱和再生骨料混凝土中氯化物侵入的数值 FE[公式省略] 研究


分析再生混凝土骨料 （RCA） 对氯化物进入的影响对于再生骨料混凝土的发展至关重要。已经开发、验证和校准了使用有限元平方 （FE2） 方法的耦合化学-水力多尺度模型。已经建立了使用从混凝土样品的实验室实验中得出的内禀参数的本构方程。研究结果表明，根据混合物质量和环境条件，再生骨料混凝土 （RAC） 的耐久性可以与天然骨料混凝土 （NAC） 相当。耐久性的主要区别在于砂浆粘附物含量的扩散速率。