Study of Moisture Transfer in Transverse Directions of Timber Members of Anhui Fir

Kongyang Chen, Menglin Sun, Hongxing Qiu

2018

Abstract

Anhui fir is a common building material in southeast China. As the basement of the research for shrinkage cracks and durability of timber structures in natural environment, this paper investigates the moisture content distribution and moisture transfer process in transverse cross-section of timber members made of Anhui fir. Now, the mostly used equations for calculating diffusion coefficient and surface emission are based on Norway spruce, which is actually not suitable for Anhui fir due to their different kinds of trees. Firstly, based on Fick’s second law, the diffusion parameters and boundary conditions in humidity field and temperature field were analogized. Then, experiment in constant temperature and relative humidity was done. Experimental result showed the polynomial moisture content distribution in transverse direction, and exponential change with time, which was used for deriving new formulas for calculating diffusion coefficient and surface emission coefficient of Anhui fir. Finally, the Abaqus heat transfer analysis was used to simulate the moisture transfer process by substituting corresponding parameters successfully, and the results agreed well with experiment.

Paper Citation

in Harvard Style

Chen K., Sun M. and Qiu H. (2018). Study of Moisture Transfer in Transverse Directions of Timber Members of Anhui Fir.In The Second International Conference on Materials Chemistry and Environmental Protection - MEEP, ISBN 978-989-758-360-5, pages 143-150. DOI: 10.5220/0008186901430150

in Bibtex Style

@conference{meep18,
author={Kongyang Chen and Menglin Sun and Hongxing Qiu},
title={Study of Moisture Transfer in Transverse Directions of Timber Members of Anhui Fir},
booktitle={The Second International Conference on Materials Chemistry and Environmental Protection - MEEP,},
year={2018},
pages={143-150},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0008186901430150},
isbn={978-989-758-360-5},
}

in EndNote Style

TY - CONF

JO - The Second International Conference on Materials Chemistry and Environmental Protection - MEEP,
TI - Study of Moisture Transfer in Transverse Directions of Timber Members of Anhui Fir
SN - 978-989-758-360-5
AU - Chen K.
AU - Sun M.
AU - Qiu H.
PY - 2018
SP - 143
EP - 150
DO - 10.5220/0008186901430150