Hydro-chemo-mechanical constitutive modeling of cemented granular materials incorporating acid–base reactions

IF 3.9 3区工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY

Materials and Structures Pub Date : 2025-09-19 DOI:10.1617/s11527-025-02775-x

Huidong Tong, Siyu Chen, Xi Du, Qijian Chen, Suran Wang

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Abstract

The corrosive effects of acid rain have a profound impact on the construction of underground tunnels, the extraction of water hydrocarbon compounds, resource development, and the long-term preservation of stone cultural artifacts. A hydro-chemo-mechanical constitutive modeling of cemented granular materials was developed using the Drucker-Prager strength criterion and the Weibull distribution as a basis. Three components of the granular material during chemical corrosion were focused on: depositional bond (DP) dissolution, diagenetic bond (DG) dissolution and grain dissolution. Under acidic conditions, the specimens exhibited progressively greater chemical damage with decreasing pH. Conversely, in alkaline solutions, damage progression was mitigated by the formation of new reaction products that filled surface fissures and pores. The chemical factor (D_c) was determined by considering the initial concentration and time of hydrogen and hydroxide ions. The degree of acidic damage or alkaline enhancement was obtained by calculating the chemical variables for chemical aqueous solutions at pH 3, 5, 7, 9 and 11, and the data showed that the acidic solution at pH 3 had the highest degree of deterioration. In addition, the constitutive model was compared with experimental data obtained by earlier researchers. The results show that the stress–strain behaviour of cemented granular materials, particularly sandstones, under different pH and peritectic conditions can be predicted by using a hydro-chemo-mechanical constitutive model incorporating chemical factors. This theoretical framework provides a valuable reference for geotechnical engineering in the presence of chemical corrosion.

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含酸碱反应的胶结颗粒材料的水化学-力学本构模型

酸雨的腐蚀作用对地下隧道的建设、水烃类化合物的提取、资源的开发以及石质文物的长期保存都有深远的影响。以Drucker-Prager强度准则和Weibull分布为基础，建立了胶结颗粒材料的水化学力学本构模型。研究了化学腐蚀过程中颗粒物质的三种组成：沉积键（DP）溶解、成岩键（DG）溶解和晶粒溶解。在酸性条件下，随着ph值的降低，样品的化学损伤程度逐渐增大。相反，在碱性溶液中，由于形成新的反应产物填充表面裂缝和孔隙，损伤程度逐渐减轻。化学因子Dc由氢离子和氢氧根离子的初始浓度和初始时间决定。通过计算pH值为3、5、7、9和11的化学溶液的化学变量，得出了酸性破坏或碱性增强的程度，数据表明pH值为3的酸性溶液的恶化程度最高。并将本构模型与前人的实验数据进行了比较。结果表明，采用含化学因素的水化学-力学本构模型可以预测胶结颗粒材料（尤其是砂岩）在不同pH和包晶条件下的应力-应变行为。该理论框架为化学腐蚀下的岩土工程提供了有价值的参考。

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来源期刊

Materials and Structures 工程技术-材料科学：综合

CiteScore

6.40

自引率

7.90%

发文量

222

审稿时长

5.9 months

期刊介绍： Materials and Structures, the flagship publication of the International Union of Laboratories and Experts in Construction Materials, Systems and Structures (RILEM), provides a unique international and interdisciplinary forum for new research findings on the performance of construction materials. A leader in cutting-edge research, the journal is dedicated to the publication of high quality papers examining the fundamental properties of building materials, their characterization and processing techniques, modeling, standardization of test methods, and the application of research results in building and civil engineering. Materials and Structures also publishes comprehensive reports prepared by the RILEM’s technical committees.