contributor author | Jun Xu | |
contributor author | Rui Mo | |
contributor author | Penggang Wang | |
contributor author | Guihua Wang | |
contributor author | Wei She | |
date accessioned | 2022-12-27T20:40:47Z | |
date available | 2022-12-27T20:40:47Z | |
date issued | 2022/10/01 | |
identifier other | (ASCE)MT.1943-5533.0004411.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4287788 | |
description abstract | One of the most important factors affecting the durability of concrete structures is reinforcement corrosion, which is caused by oxygen concentration. Therefore, it is important to investigate oxygen diffusion in cement pastes. However, current research on oxygen diffusion models of unsaturated cement pastes has led to unclear conclusions. In this study, we propose a single-pipe oxygen diffusion model that considers five diffusion mechanisms: surface, Knudsen, transition, bulk, and water curtain. Further, a three-stage method is used to set up the model, and the division mode of this method is based on the mean free path (MFP) and the Mohycan model. The accuracy of the model is verified by comparing the calculated results with the experimental data. The proposed single-pipe model can be used to further analyze the durability degradation of reinforced concrete structures caused by steam, carbon dioxide, and other gases in the atmospheric environment. | |
publisher | ASCE | |
title | Single-Pipe Model of Oxygen Diffusion in Unsaturated Cement Pastes: Comprehensive Analysis of Surface, Knudsen, Bulk, Transition, and Water-Curtain Diffusion | |
type | Journal Article | |
journal volume | 34 | |
journal issue | 10 | |
journal title | Journal of Materials in Civil Engineering | |
identifier doi | 10.1061/(ASCE)MT.1943-5533.0004411 | |
journal fristpage | 04022262 | |
journal lastpage | 04022262_12 | |
page | 12 | |
tree | Journal of Materials in Civil Engineering:;2022:;Volume ( 034 ):;issue: 010 | |
contenttype | Fulltext | |