期刊
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
卷 30, 期 1, 页码 -出版社
ASCE-AMER SOC CIVIL ENGINEERS
DOI: 10.1061/(ASCE)MT.1943-5533.0002122
关键词
Finite-element simulation; Concrete; Capillary water absorption; Discrete crack
Understanding capillary water absorption in concrete is of major significance for the durability assessment of concrete structures, particularly when cracks are present. The paper develops a three-dimensional (3D) finite-element (FE) model to simulate water absorption in concrete samples with discrete crack networks. In this model, the uncracked domain is discretized into solid elements whereas discrete cracks are modeled by zero-thickness crack elements, with the unsaturated flow theory applied to describe the water penetration process. The proposed model is validated by comparing with experimental data from the literature. Concrete samples containing randomly generated 3D crack networks are employed for investigating water uptake, and the effects of crack configurations (i.e.,crack density, length, and width) on the sorptivity are evaluated numerically. The proposed model is shown to be capable of simulating the capillary flow within unsaturated cracked concrete, indicating that the discrete cracks play a significant role in accelerating the absorption rate of water.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据