Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
|
Computers and Concrete Volume 18, Number 3, September 2016 , pages 367-388 DOI: https://doi.org/10.12989/cac.2016.18.3.367 |
|
|
|
A simple practical method for determination of moisture transfer coefficient of mature concrete using a combined experimental-numerical approach |
||
Mehdi Nemati Chari, Mohammad Shekarchi,Pouria Ghods
and Masoud Moradian
|
||
| Abstract | ||
| In this paper, a simple practical method is introduced in which a simple weight measurement of concrete and finite element numerical analysis are used to determine the moisture transfer coefficient of concrete with a satisfactory accuracy. Six concrete mixtures with different water-to-cementitious material (w/cm) ratios and two pozzolanic materials including silica fume and zeolite were examined to validate the proposed method. The comparison between the distribution of the moisture content obtained from the model and the one from the experimental data during both the wetting and drying process properly validated the performance of the method.With the proposed method, it was also shown that the concrete moisture transfer coefficient considerably depends on the pore water saturation degree. The use of pozzolanic materials and also lowering w/cm ratio increased the moisture transfer coefficient during the initial sorption, and then, it significantly decreased with an increase in the water saturation degree. | ||
| Key Words | ||
| moisture transfer coefficient; numerical modeling; silica fume; wetting and drying; zeolite | ||
| Address | ||
| Mehdi Nemati Chari and Mohammad Shekarchi: School of Civil Engineering, University of Tehran, Tehran, Iran Pouria Ghods: Giatec Scientific Inc., Ottawa, Ontario, Canada Masoud Moradian: School of Civil and Environmental Engineering, Oklahoma State University, Stillwater, Oklahoma, USA | ||