Nonlinear elastic model for compacted clay concrete interface

Abstract

In this paper, a nonlinear elastic model was developed to simulate the behavior of compacted clay concrete interface (CCCI) based on the principle of transition mechanism failure (TMF). A number of simple shear tests were conducted on CCCI to demonstrate different failure mechanisms; i.e., sliding failure and deformation failure. The clay soil used in the test was collected from the "Shuang Jang Kou" earth rockfill dam project. It was found that the behavior of the interface depends on the critical water contents by which two failure mechanisms can be recognized. Mathematical relations were proposed between the shear at failure and water content in addition to the transition mechanism indicator. The mathematical relations were then incorporated into the interface model. The performance of the model is verified with the experimental results. The verification shows that the proposed model is capable of predicting the interface shear stress versus the total shear displacement very well.

Evaluation of Slope Stability at Interface using Thin Soil Material Model in Finite Element Software

“…From Table 3, the results also indicated that water had a significant role in determining the interface failure, where a higher degree of saturation would lower the interface shear strength. Although [16] argued that a higher degree of saturation would give higher interface shear strength of clay interface with concrete, other studies agreed with the current study's results [1][2][3]. Thus, water could be concluded to reduce the interface shear strength dominantly.…”

Study on the Effects of Grouting and Roughness on the Shear Behavior of Cohesive Soil–Concrete Interfaces

“…Following the work of Potyondy [8], who studied the interface between soil and various construction materials, many scholars have studied the characteristics of the soil-structure interface . These studies included apparatus modifications and new test methods [9][10][11], which were used to investigate the influence of surface properties on the traditional soil-structure interface (including soil-concrete, soil-steel, and soil-cement grout interfaces) [9,[12][13][14][15][16][17][18][19][20][21][22][23][24][25]33,34], the interfaces between new materials (including ice-soil and soil-geogrid interfaces) [26][27][28][29][30][31][32], and the exterior load conditions (stress history, monotonic load, or cyclic load condition) [35][36][37].…”

“…Following the work of Potyondy [ 8 ], who studied the interface between soil and various construction materials, many scholars have studied the characteristics of the soil–structure interface [ 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 ]. These studies included apparatus modifications and new test methods [ 9 , 10 , 11 ], which were used to investigate the influence of surface properties on the traditional soil–structure interface (including soil–concrete, soil–steel, and soil–cement grout interfaces) [ 9 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 33 , 34 ], the interfaces between new materials (including ice–soil and soil–geogrid interfaces) [ 26 , 27 , 28 ,…”