Title:
Products & Practice Spotlight: Self-Annealing Concrete
Author(s):
Romeo I. Ciuperca
Publication:
Concrete International
Volume:
38
Issue:
8
Appears on pages(s):
65-69
Keywords:
cracking, strength, permeability, durability
DOI:
10.14359/51689202
Date:
8/1/2016
Abstract:
Concrete formwork is usually not insulated and is removed as quickly as possible. By insulating the formwork, however, heat and moisture can remain in the concrete and accelerate the hydration process. Thermal and moisture differentials can be also minimized, reducing tensile strains near the concrete surfaces. This effect of insulated formwork, called the self-annealing process, is discussed in the article along with comparison of the field performance of insulated formwork versus conventional formwork.
Related References:
1. “Concrete Mix Composition, Mortar Mix Composition and Method of Making and Curing Concrete or Mortar and Concrete or Mortar Objects and Structures,” U.S. Patent 8,545,749 B2, Oct. 1, 2013.
2. Narmluk, M., and Nawa, T., “Effect of Curing Temperature on Pozzolanic Reaction of Fly Ash in Blended Cement Paste,” International Journal of Chemical Engineering and Applications, V. 5, No. 1, Feb. 2014, pp. 31-35.
3. Collepardi, M., “Chapter XIV - Temperature and Concrete,” The New Concrete, Grafiche Tintoretto, Italy, 2006, 421 pp.
4. Ozyildirim, H. C., “Effects of Temperature on the Development of Low Permeability in Concretes,” VTRC 98-R14, Virginia Transportation Research Council, Charlottesville, VA, 1998, 22 pp.