Mechanical Properties and Energy Evolution of Red Sandstone Under the Influence of Acid Corrosion

IF 2.6 4区综合性期刊 Q2 MULTIDISCIPLINARY SCIENCES

Arabian Journal for Science and Engineering Pub Date : 2024-03-20 DOI:10.1007/s13369-024-08886-x

Yongsheng Liu, Wang Liu, Cui Wang, Maolin Zhai

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Abstract

This study aimed to investigate the effects of acid corrosion on mechanical properties and fractal characteristics of red sandstone. The mineral composition of red sandstone was analyzed using X-ray diffraction. The mechanical properties and acoustic emission (AE) signals of red sandstone specimens corroded by sulfuric acid solution with pH values of 1, 3, and 5 for 30 days were determined by uniaxial compression test and AE technique. The energy dissipation law and the fractal damage characteristics of red sandstone specimens after acid corrosion were analyzed based on the energy and fractal theories. The results indicated that the compressive strength and elastic modulus of red sandstone specimens corroded by acid solution decreased. In addition, the peak strain increased, the cumulative AE ringing count decreased, and the duration of high-level AE ringing shortened. These phenomena became more pronounced as the acidity of the solution increased. The peak values of the total energy and the elastic strain energy of the acid-solution-corroded red sandstone specimens decreased. The energy absorption capacity and energy storage limit of rock specimens also decreased. The fractal dimension and the degree of fragmentation decreased with the dissipated energy used for fragmentation. This research provides valuable insights into the prevention and control of sub-surface geotechnical hazards in acid rain-prone areas.

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酸腐蚀作用下红砂岩的力学特性和能量演化

本研究旨在探讨酸腐蚀对红砂岩机械性能和分形特征的影响。利用 X 射线衍射分析了红砂岩的矿物组成。通过单轴压缩试验和声发射（AE）技术测定了红砂岩试样在 pH 值为 1、3 和 5 的硫酸溶液中腐蚀 30 天的力学性能和声发射（AE）信号。根据能量理论和分形理论，分析了酸腐蚀后红砂岩试样的能量耗散规律和分形损伤特征。结果表明，被酸溶液腐蚀的红砂岩试样的抗压强度和弹性模量均有所下降。此外，峰值应变增加，累积 AE 振铃次数减少，高水平 AE 振铃持续时间缩短。这些现象随着溶液酸度的增加而变得更加明显。酸溶液腐蚀红砂岩试样的总能和弹性应变能的峰值降低。岩石试样的能量吸收能力和储能极限也有所下降。碎裂维度和碎裂程度随着碎裂能量的耗散而降低。这项研究为预防和控制酸雨多发地区的地下岩土工程危害提供了有价值的见解。

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来源期刊

Arabian Journal for Science and Engineering MULTIDISCIPLINARY SCIENCES-

CiteScore

5.70

自引率

3.40%

发文量

993

期刊介绍： King Fahd University of Petroleum & Minerals (KFUPM) partnered with Springer to publish the Arabian Journal for Science and Engineering (AJSE). AJSE, which has been published by KFUPM since 1975, is a recognized national, regional and international journal that provides a great opportunity for the dissemination of research advances from the Kingdom of Saudi Arabia, MENA and the world.