TY - JOUR

T1 - Deformation of a sandstone–mudstone particle mixture induced by periodic saturation

AU - Wang, Jun Jie

AU - Qiu, Zhen Feng

AU - Bai, Jiping

AU - Yu, Cheng

AU - Liu, Ming Wei

PY - 2017/6/19

Y1 - 2017/6/19

N2 - This study focuses on the evaluation on deformation induced by periodic saturation of a sandstone–mudstone particle mixture. Two types of triaxial tests, without and with periodic saturation, were performed. The strain–stress relationships from the two types of tests indicate that the periodic saturation may induce an increment of axial strain (Δε), and the Δε values are related to the ratio of confining to atmospheric pressure (σ3/pa), stress level for periodic saturation (L), and number of periodic saturation or cycles (N). The values of Δε are increasing along logarithmic curves with increment of N value from 1 to 20, and increase along straight lines with increasing L value from 0.18 to 0.82 or σ3/pa value from 1 to 4. Based on the analyses of experimental data, a logarithmic fitting equation, which is a function of N, L, and σ3/pa, is suggested to predict the Δε value. And based on the fitting equation and simple analyses on stress state, another equation, which may be used to estimate the settlement induced by periodic saturation of a large-area foundation filled using the sandstone–mudstone particle mixture, is also suggested.

AB - This study focuses on the evaluation on deformation induced by periodic saturation of a sandstone–mudstone particle mixture. Two types of triaxial tests, without and with periodic saturation, were performed. The strain–stress relationships from the two types of tests indicate that the periodic saturation may induce an increment of axial strain (Δε), and the Δε values are related to the ratio of confining to atmospheric pressure (σ3/pa), stress level for periodic saturation (L), and number of periodic saturation or cycles (N). The values of Δε are increasing along logarithmic curves with increment of N value from 1 to 20, and increase along straight lines with increasing L value from 0.18 to 0.82 or σ3/pa value from 1 to 4. Based on the analyses of experimental data, a logarithmic fitting equation, which is a function of N, L, and σ3/pa, is suggested to predict the Δε value. And based on the fitting equation and simple analyses on stress state, another equation, which may be used to estimate the settlement induced by periodic saturation of a large-area foundation filled using the sandstone–mudstone particle mixture, is also suggested.

KW - Axial strain

KW - deformation

KW - periodic saturation

KW - sandstone–mudstone particle mixture

KW - settlement

U2 - 10.1080/1064119X.2017.1340375

DO - 10.1080/1064119X.2017.1340375

M3 - Article

AN - SCOPUS:85026519905

SP - 1

EP - 10

JO - Marine Georesources and Geotechnology

JF - Marine Georesources and Geotechnology

SN - 1064-119X

ER -