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首页> 外文期刊>International Journal of Fatigue >Mechanical fatigue behavior in treated/stabilized soils subjected to a uniaxial flexural test
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Mechanical fatigue behavior in treated/stabilized soils subjected to a uniaxial flexural test

机译：经单轴挠曲测试的已处理/稳定土的机械疲劳行为

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摘要

The use of in situ fine-grained soils treated with lime and/or hydraulic binders as subgrade in common civil engineering infrastructures is a sustainable upgrading process for natural materials with low mechanical performances. In the case of land transport projects, the lack of knowledge on mechanical fatigue behavior in these materials leads either to empirical oversized design of the layers made with these materials or to their rejection. However, the development of a relevant test now enables us to accurately measure the mechanical fatigue performances of treated soils. First, sample preparation appears to explain most fatigue performances, not sample mineralogy. Second, based on original results on three treated soils and previous results from the literature, it seems that a behavior law governs these performances. Finally, a simple classification tool shows that these materials can be considered within the entirety of transport infrastructures from subgrade layers to subbase layers.
机译：在普通的土木工程基础设施中，用石灰和/或水硬性粘结剂处理过的原位细颗粒土作为路基，对于机械性能低的天然材料而言，是一种可持续的升级过程。在陆路运输项目中，对这些材料的机械疲劳行为缺乏了解会导致对这些材料制成的层进行经验性的超大尺寸设计，或者导致其被拒收。但是，相关测试的发展现在使我们能够准确地测量经过处理的土壤的机械疲劳性能。首先，样品制备似乎可以解释大多数疲劳性能，而不是样品的矿物学。其次，基于在三种处理过的土壤上的原始结果以及文献中的先前结果，似乎行为规律支配了这些表现。最后，一个简单的分类工具表明，可以在从路基层到路基层的整个运输基础设施中考虑这些材料。

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