In this study, a large-scale laboratory test was developed to analyze the contribution of geogrid reinforcement to the improvement of unpaved roads. A detailed experimental protocol was established regarding the road base soil preparation, installation, and soil compaction procedure. Eight tests were performed under a circular plate load test in a box 1800 mm in width, 1900 mm in length, and 1100 mm in height. Under this configuration, three repeat tests were performed to verify the developed protocol. Furthermore, the plate load tests were used to compare different road base thicknesses and geogrid types. Once the developed protocol was confirmed, three tests, using the developed simulator accelerator of traffic (SAT), were performed. Indeed, the same road base configuration was tested, but this time it was placed in a box 5000 mm in length. The prepared road base was subjected to two different loadings: a specific plate load and a traffic load. The results showed the efficiency of the geogrids, the influence of the road base thickness, and the role of the loading type. Moreover, it demonstrated different mobilized mechanisms of the geogrid, depending on the type of product.

中文翻译：

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软质路基上土工合成材料加筋未铺砌道路的全尺寸实验室试验

在这项研究中，开发了一个大型实验室测试来分析土工格栅加固对改善未铺砌道路的贡献。建立了关于路基整地、安装和土壤压实程序的详细实验方案。在宽1800mm、长1900mm、高1100mm的箱体中，在圆板载荷试验下进行了8次试验。在此配置下，执行了三个重复测试以验证开发的协议。此外，板载试验用于比较不同的路基厚度和土工格栅类型。一旦开发的协议得到确认，就使用开发的交通模拟器加速器 (SAT) 进行了三项测试。确实，测试了相同的路基配置，但这次它被放置在一个 5000 毫米长的盒子中。准备好的路基承受两种不同的载荷：特定的板载荷和交通载荷。结果显示了土工格栅的效率、路基厚度的影响以及荷载类型的作用。此外，它展示了土工格栅的不同动员机制，这取决于产品的类型。