Internal curing: Discussion of the role of pore solution on relative humidity measurements and desorption of Lightweight Aggregate (LWA)

Javier Castro, Pietro Lura, Farshad Rajabipour, Ryan Henkensiefken, Jason Weiss

Research output: Chapter in Book/Report/Conference proceedingConference contribution

17 Scopus citations

Abstract

Internal curing can be used to counteract the effects of self-desiccation in low water-cement ratio mixtures. Internal curing uses prewetted lightweight aggregate (LWA) as a reservoir that can release water as it is needed to keep the hydrating cement paste structure saturated. While many developments have been made in advancing the field of internal curing, this work examines the composition of the early-age pore solution. The effect of the pore solution composition on the relative humidity is also discussed. The paper performs desorption measurements of the lightweight aggregate to better understand how fluid is released from the lightweight aggregate. An approach is suggested to use solutions rather than pure distilled water to improve the relevance of the measurement of desorption at high relative humidities.

Original languageEnglish (US)
Title of host publicationAdvances in the Material Science of Concrete - Session at the ACI Spring 2010 Convention
Pages89-100
Number of pages12
Edition270 SP
StatePublished - Dec 1 2010
EventACI Spring 2010 Convention - Chicago, IL, United States
Duration: Mar 21 2010Mar 25 2010

Publication series

NameAmerican Concrete Institute, ACI Special Publication
Number270 SP
ISSN (Print)0193-2527

Other

OtherACI Spring 2010 Convention
CountryUnited States
CityChicago, IL
Period3/21/103/25/10

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

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    Castro, J., Lura, P., Rajabipour, F., Henkensiefken, R., & Weiss, J. (2010). Internal curing: Discussion of the role of pore solution on relative humidity measurements and desorption of Lightweight Aggregate (LWA). In Advances in the Material Science of Concrete - Session at the ACI Spring 2010 Convention (270 SP ed., pp. 89-100). (American Concrete Institute, ACI Special Publication; No. 270 SP).