Abstract
This paper addresses fundamental issues of influence of elevated temperature and moderate wind speed on mass transport properties of concrete including moisture diffusivity D and convective moisture transfer coefficient hf. Using a combined experimental-numerical approach, the influence of varying temperature T (in the range of 35°C-70°C) and wind speed co (of maximum intensity 22 km/h) on moisture loss, moisture diffusivity, and convective transfer coefficient in concretes of three water-cement ratios is investigated. Based on this data, certain invariant functional forms are postulated for variables of interest including free shrinkage, moisture loss, average moisture diffusivity, wind speed, ambient temperature, and water-cement ratio, leading to the development of a minimum crack mix design model.
| Original language | English |
|---|---|
| Pages (from-to) | 77-91 |
| Number of pages | 15 |
| Journal | Arabian Journal for Science and Engineering |
| Volume | 31 |
| Issue number | 1 C |
| State | Published - Jun 2006 |
Keywords
- Crack minimization model
- Finite element model
- High temperature and moderate winds
- Hot weather concreting
- Mix design for minimum crack
- Moisture transport in concrete
- Multiple invariant forms
ASJC Scopus subject areas
- General