TY - JOUR
TI - Effect of acid-base corrosion on the tensile strength of shale under different temperature
AU - Liang Xin
AU - Hou Peng
AU - Zhai Ya-Yu
AU - Jiao Xuan-Ye
JN - Thermal Science
PY - 2020
VL - 24
IS - 6
SP - 3961
EP - 3969
PT - Article
AB - In this study, we mainly investigate the impact of the acid-base corrosion on  the tensile strength of the shale under different concentration and water  bath temperature of acid-base solutions. Based on the X-ray diffractometry,  the SEM and Brazilian splitting tests, the changes of the composition,  macro-surface morphology, micro-structure and tensile strength of shale  before and after acid-base corrosion are systematically analyzed. The  results show that acid-base corrosion would cause chemical damage to shale  as a result of the removal of the high hardness minerals and the generation  of the dissolved pores and microfractures, resulting in the reduction in its  tensile strength. Meanwhile, higher concentration and water bath temperature  can promote acid- or alkali-shale interactions and increase the weakening  degree of the shale tensile strength.