- Author
- Lura, P. | Bentz, D. P. | Lange, D. A. | Kovler, K. | Bentur, A. | vanBreugel, K.
- Title
- Measurement of Water Transport from Saturated Pumice Aggregates to Hardening Cement Paste.
- Coporate
- Technical University of Denmark, Lynbgy, Denmark National Institute of Standards and Technology, Gaithersburg, MD University of Illinois at Urbana-Champaign, Urbana Technion-Israel Institute of Technology, Haifa, Israel Delft University of Technology, The Netherlands
- Book or Conf
- Advances in Cement and Concrete. Proceedings. Engineering Conferences International. August 10-14, 2003, Copper Mountain, CO, 89-99 p., 2003
- Keywords
- cement paste | aggregates | curing | concretes | water transport | hydration | x-ray absorption
- Abstract
- In this study about internal curing of High Performance Concrete, X-ray absorption showed that considerable transport of water from saturated lightweight aggregates (pumice) to hydrating cement pastes (w/c ratio 0.3) took place in the first days after casting and covered a distance of at least 4 mm. As a consequence, the amount of water released by the lightweight aggregates, rather than the spatial distribution of the aggregates, is in this case the crucial factor to avoid early-age self-desiccation shrinkage.