Parameters controlling stiffness and strength of artificially cemented soils
Parameters controlling stiffness and strength of artificially cemented soils
复制标题
DOI：
10.1680/geot.8.p.084
复制
发表时间：
2012-02-01
期刊：
影响因子：
5.8
通讯作者：
Fonini, A.
中科院分区：
文献类型：
--
作者：
Consoli, N. C.;da Fonseca, A. V.;Fonini, A.
当一个项目需要改善当地土壤以建造铁轨路基、道路路基、作为浅基础的支撑层以及防止砂土液化时，用水泥处理土壤是一种有吸引力的技术。本文通过对两种不同级配水泥土的试验，定量分析了孔隙率/水泥比对水泥土初始剪切模量（G（0））和无侧限抗压强度（q（u））的影响，从而加深了对水泥土强度和刚度控制的关键参数的认识。结果表明，孔隙率/水泥比是一个适当的参数来评估的初始刚度和无侧限抗压强度的土壤水泥混合物的研究。每种土壤基质的G（0）/q（u）与调整后的孔隙率/水泥比之间都有独特的关系，将初始刚度和强度联系起来。
The treatment of soils with cement is an attractive technique when a project requires improvement of the local soil for the construction of subgrades for rail tracks, for roads, as a support layer for shallow foundations, and to prevent sand liquefaction. This paper advances understanding of the key parameters for the control of strength and stiffness of cemented soils by testing two soils with different gradings and quantifying the influence of porosity/cement ratio on both initial shear modulus (G(0)) and unconfined compressive strength (q(u)). It is shown that the porosity/cement ratio is an appropriate parameter to assess both the initial stiffness and the unconfined compressive strength of the soil-cement mixtures studied. Each soil matrix has a unique relationship for G(0)/q(u) against adjusted porosity/cement ratio, linking initial stiffness and strength.