摘要：To bridge the gap between elemental concentrations and rock mechanics, this paper proposed to predict a tensile failure using the weight concentrations of various elements. In this research, the Brazilian test was used to measure the indirect tensile strength of sandstones under different environmental conditions, i.e., oven drying, water immersion, and mud filtration. According to the mechanical test results of 37 sandstone specimens, the fracture patterns can be quite complicated due to an interaction of tensile fracture with shear fracture or bending fracture. To improve the prediction accuracy of the statistical analysis, a digital image correlation (DIC) technique was used to capture the dynamic fracturing process and to verify the validity of the Brazilian tests. Finally, only 15 specimens met the principle of the Brazilian test with a valid tensile failure. Using the energy-dispersive system (EDS), a distinct disparity of elemental concentrations was identified between those two sides of a fracture, such as the content contrasts of C, Mg, Al, Si, Ca, Ti, Fe, and Zn. These key elements can be used to identify the fracture positions and predict the rock mechanical properties, e.g., Brazilian test strength, Young's modulus, and Poisson's ratio. The excellent correlation performance, between rock strength parameters and elemental concentrations, proved it applicable to provide another potential function of the Elemental Capture Spectroscopy log in the evaluation of wellbore integrity.
© 2019 Elsevier Ltd

ISSN号：1365-1609

卷、期、页：v 123,

发表日期：2019-11-01

影响因子：2.371000

期刊分区（SCI为中科院分区）：三区

收录情况：SCI（科学引文索引印刷版）,ESI（基本科学指标数据库）,EI（工程索引）,SCIE（科学引文索引网络版）

发表期刊名称：International Journal of Rock Mechanics and Mining Sciences

参与作者：Chen, Keyong,Hayatdavoudi, Asadollah,Sawant, Kaustubh,Zhang, Chi

通讯作者：黄鹏鹏

第一作者：赫文豪

论文类型：期刊论文

论文概要：赫文豪,Chen, Keyong,Hayatdavoudi, Asadollah,黄鹏鹏,Sawant, Kaustubh,Zhang, Chi，Incorporating the effects of elemental concentrations on rock tensile failure，International Journal of Rock Mechanics and Mining Sciences，2019，v 123,

论文题目：Incorporating the effects of elemental concentrations on rock tensile failure