- 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.