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首页> 外文期刊>Bulletin des Laboratoires des Ponts et Chaussees >Transferts dans les betons et durabilite des ouvrages Bilan de cinq annees de recherches et orientations futures
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Transferts dans les betons et durabilite des ouvrages Bilan de cinq annees de recherches et orientations futures

机译：混凝土的转移和结构的可持续性五年的研究和未来方向

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摘要

This article is aimed first at synthesizing the main scientific results obtained within the framework of a research project directed by the LCPC laboratory, and then at drawing up a list of the direct products generated from this work; these would include the various test methods already developed. The objectives, along with the approach adopted as part of this coordinated project associating many laboratories, are recalled first. A sample of significant results is also presented, as regards the understanding of the mechanisms (moisture transfers, carbonation, chloride ingress) as well as the tools for characterizing the microstructure and the parameters involved in the durability to reinforcement corrosion. The examples cited include the quantification of interactions between hydration and exogenous drying and their consequences, along with an evaluation of physico-chemical interactions between chloride ions and the cementitious matrix, the determinant influence of specimen preconditioning on test results, and the modeling of isothermal moisture transfers. This last example has served as a basis for developing not just (chloride) ion transfer models under unsaturated conditions, but also an indirect method for assessing permeability to liquid water. In addition, a number of leads are proposed herein on the one hand, for: pursuing research in the area of civil engineering material durability, and, on the otherhand, for emphasizing the work conducted to date, and transferring the results to practical applications.
机译：本文的目的是首先综合在LCPC实验室指导的研究项目框架内获得的主要科学成果，然后制定一份从这项工作中产生的直接产品的清单。这些将包括已经开发的各种测试方法。首先回顾一下这些目标以及与许多实验室相关联的协调项目中采用的方法。还提供了重要结果的样本，涉及对机理（水分转移，碳化，氯化物进入）的理解，以及表征微观结构的工具和与增强腐蚀的耐久性相关的参数。引用的示例包括水合与外源干燥之间相互作用的定量及其后果，以及氯离子与胶结基质之间的物理化学相互作用的评估，样品预处理对测试结果的决定性影响以及等温水分的建模转移。最后一个例子不仅为开发不饱和条件下的（氯）离子转移模型奠定了基础，而且还为评估液态水的渗透性提供了一种间接方法。另外，本文一方面提出了许多线索，用于：在土木工程材料耐久性领域中进行研究，另一方面，用于强调迄今为止进行的工作，并将结果转移到实际应用中。

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