Measurement of Water Transport from Saturated Pumice Aggregates to Hardening Cement Paste.
Measurement of Water Transport from Saturated Pumice
Aggregates to Hardening Cement Paste.
Lura, P.; Bentz, D. P.; Lange, D. A.; Kovler, K.;
Bentur, A.; vanBreugel, K.
Advances in Cement and Concrete. Proceedings.
Engineering Conferences International. August 10-14,
2003, Copper Mountain, CO, 89-99 pp, 2003.
cement paste; aggregates; curing; concretes; water
transport; hydration; x-ray absorption
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