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Crushed rocks stabilized with organosilane and lignosulfonate in pavement unbound layers: Repeated load triaxial tests
Frontiers of Structural and Civil Engineering ( IF 2.9 ) Pub Date : 2021-04-19 , DOI: 10.1007/s11709-021-0700-5
Diego Maria Barbieri , Inge Hoff , Chun-Hsing Ho

The creation of the new “Ferry-Free Coastal Highway Route E39” in southwest Norway entails the production of a remarkable quantity of crushed rocks. These resources could be beneficially employed as aggregates in the unbound courses of the highway itself or other road pavements present nearby. Two innovative stabilizing agents, organosilane and lignosulfonate, can significantly enhance the key properties, namely, resilient modulus and resistance against permanent deformation, of the aggregates that are excessively weak in their natural state. The beneficial effect offered by the additives was thoroughly evaluated by performing repeated load triaxial tests. The study adopted the most common numerical models to describe these two key mechanical properties. The increase in the resilient modulus and reduction in the accumulated vertical permanent deformation show the beneficial impact of the additives. Furthermore, a finite element model was created to simulate the repeated load triaxial test by implementing nonlinear elastic and plastic constitutive relationships.



中文翻译:

在路面未粘结层中用有机硅烷和木质素磺酸盐稳定的碎石:重复载荷三轴试验

在挪威西南部创建新的“ E39无轮渡沿海公路路线”需要生产大量碎石。这些资源可以有效地用作高速公路本身或附近存在的其他路面的未约束路线中的集合体。两种创新的稳定剂,有机硅烷和木质素磺酸盐,可以显着增强天然状态过弱的骨料的关键性能,即弹性模量和抗永久变形性。通过执行重复载荷三轴测试,彻底评估了添加剂提供的有益效果。该研究采用了最常见的数值模型来描述这两个关键的机械性能。弹性模量的增加和累积的垂直永久变形的减少显示了添加剂的有益影响。此外,通过实现非线性弹性和塑性本构关系,创建了一个有限元模型来模拟重复载荷三轴试验。

更新日期:2021-04-19
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