ENGINEERING PROPERTIES OF SOIL STABILIZED BY FERRUM LIME AND USED FOR THE APPLICATION OF ROAD BASE.
ENGINEERING PROPERTIES OF SOIL STABILIZED BY FERRUM LIME AND USED FOR THE APPLICATION OF ROAD BASE.
复制标题
铁石灰稳定土用于路基的工程性能。
DOI：
10.3208/sandf.39.31
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发表时间：
1999
影响因子：
3.7
通讯作者：
T. Katsumi
中科院分区：
文献类型：
--
作者：
M. Kamon;Huan;T. Katsumi
本文研究了由氧化铁（Fe_2O_3）和熟石灰（Ca（OH）_2）组成的混合物铁石灰稳定土的性能，以评价其在道路建设中的工程性质。根据室内试验获得的材料的静态压缩、静态弯曲和动态回弹性能，评价铁石灰稳定土作为道路基层材料的适应性。氧化铁促进稳定土的抗压强度和刚度的增加。回弹模量Mr是反映材料在动态循环荷载作用下性能的一个参数，它取决于偏应力和平均主应力。在偏应力和平均主应力较低的情况下，铁石灰稳定土的Mr值比石灰稳定土的Mr值高。然而，随着偏应力和平均主应力的增加，两种类型的固化土之间的回弹模量Mr的差异可能不明显。此外，还可以观察到铁石灰稳定土的回弹模量Mr对静强度的依赖性。断裂表面能ys是一个表征材料抗裂能力的参数，它与破坏时的挠度有关，但几乎不依赖于弯曲强度。两种类型的固化土的ys值几乎相同。试验结果表明，氧化铁作为石灰稳定土的稳定剂，可以提高路面的耐久性。
ABSTRACT In this paper, the behavior of soil stabilized by ferrum lime, a mixture composed of ferric oxide (Fe2O3) and hydrated lime (Ca(OH)2), is investigated in order to assess the engineering properties of the stabilized soil for its application to road construction. The aptitude of the ferrum-lime stabilized soil as road base material is evaluated according to the static compressive, static flexural, and dynamic resilient properties of materials obtained from laboratory tests. The ferric oxide promotes an increase in both compressive strength and the stiffness of the stabilized soil. Resilient modulus Mr, a parameter expressing the material behavior under dynamic cyclic loading, depends on the deviator stress and the mean principal stress. Under lower deviator stress and mean principal stress conditions, the Mr of the ferrum-lime stabilized soil has a higher value than that of the hydrated-lime stabilized soil. However, the difference in resilient modulus Mr between the two types of stabilized soils may not be distinct with increases in the deviator stress and the mean principal stress. In addition, the dependence of resilient modulus Mr on the static strength of the ferrum-lime stabilized soil can be observed. Fracture surface energy ys, a parameter which indicates the resistance ability of a material to cracks, is related to the deflection at failure, but hardly depends on the flexural strength. The ys has almost the same values for both type of stabilized soils. According to test results, ferric oxide can improve the durability of pavement when it is used as a stabilizer for lime stabilized soil.