Abstract

According to the evidence of numerous advantages of earthen buildings, there is an increasing interest to study adobe elements for sustainable development. This paper presents experimental investigation alongside numerical simulation of several adobe elements under compression, direct tension, three-point bending and indirect shear tests to have a better understanding of their basic mechanical properties. Two different mix-design of clay adobes including plain and short tire fibers reinforced adobes with unique soil type, water content and compacting level are provided. The tire fibers are the waste production of tire factories which are hazardous to the green environment. Numerical simulations are conducted in ABAQUS software for further analysis. In this direction, the material constitutive model and the damage indices are defined based on the experimental stress-strain relations which are achieved during this study and the model of concrete damage plasticity was considered in the software. Furthermore, the experimental observations for direct tensile and indirect shear tests were documented by means of a Digital Image Correlation (DIC) technique from a 2-D DIC system. The effectiveness of the added short fibers on the mechanical properties of the reinforced adobe were thoroughly discussed.

摘要

根据土制建筑众多优势的证据，人们对研究土坯元素以促进可持续发展的兴趣日益浓厚。本文介绍了在压缩、直接拉伸、三点弯曲和间接剪切试验下的几个土坯元件的数值模拟的实验研究，以更好地了解它们的基本力学性能。提供了两种不同的粘土土坯混合设计，包括具有独特土壤类型、含水量和压实度的普通和短轮胎纤维增强土坯。轮胎纤维是轮胎厂产生的对绿色环境有害的废弃物。数值模拟在 ABAQUS 软件中进行进一步分析。在这个方向上，根据本研究中获得的实验应力-应变关系定义材料本构模型和损伤​​指标，并在软件中考虑混凝土损伤塑性模型。此外，通过二维 DIC 系统的数字图像相关 (DIC) 技术记录了直接拉伸和间接剪切测试的实验观察结果。深入讨论了添加短纤维对增强土坯力学性能的影响。通过二维 DIC 系统的数字图像相关 (DIC) 技术记录了直接拉伸和间接剪切测试的实验观察结果。深入讨论了添加短纤维对增强土坯力学性能的影响。通过二维 DIC 系统的数字图像相关 (DIC) 技术记录了直接拉伸和间接剪切测试的实验观察结果。深入讨论了添加短纤维对增强土坯力学性能的影响。