Controlling Plastic and Autogenous Shrinkage in High-Performance Concrete Structures by an Early Water Curing

ABOUT THE INTERNATIONAL CONCRETE ABSTRACTS PORTAL

  • The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal

  


Title: Controlling Plastic and Autogenous Shrinkage in High-Performance Concrete Structures by an Early Water Curing

Author(s): P.-C. Aitcin, G. Haddad, and R. Morin

Publication: Special Publication

Volume: 220

Issue:

Appears on pages(s): 69-83

Keywords: autogenous shrinkage; bleeding; cost of water curing; curing membrane; early cracking; fogging; high-performance concrete (HPC); plastic shrinkage; sustainable development

Date: 3/1/2004

Abstract:
High-performance concrete is very vulnerable to early cracking because it does not bleed and it develops within the first 24 hours a significant autogenous shrinkage when it still has a very weak tensile strength. Plastic shrinkage cannot always be fought with curing membrane: fog spraying is much more appropriate. Among the different means already available to fight early autogenous shrinkage external water curing is a very efficient one. Water curing must be extended for 7 days. At the present state of the technology concretes having a water/cement ratio of 0.36 are the more robust against early cracking when an external water curing is used. The cost of water curing can represent from 0.1 to 1.5% of the total construction cost of concrete structures, a good investment in a sustainable development perspective.