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Title: Influence of Curing Conditions on the Impact of Natural Aggregate Coatings on Concrete Performance
Accession Number: 01356759
Record Type: Component
Record URL: Availability: Transportation Research Board Business Office 500 Fifth Street, NW Find a library where document is available Abstract: Traditionally the effect of microfines in concrete has been evaluated in specimens subjected to a moist curing regimen. However, this type of curing is not representative of real pavement construction conditions in the field where evaporation of water from new pavement surfaces can occur before curing compounds are applied. This study evaluated the impacts of natural microfines from both aggregate fractions, fine and coarse, under ASTM C33–specified requirements, in the performance of concrete cured under a wet (~90% relative humidity) and a dry (30% to 60% relative humidity) environment. The examined concrete batches were fabricated with seven different aggregates, and their associated microfines fell into two major categories: siliceous stone and dolomitic limestone. Results showed that current ASTM C33 thresholds of microfine content were reliable only when specimens were moist cured. The damage induced by dry curing was exacerbated by the presence of these microfines.
Monograph Title: Monograph Accession #: 01356761
Report/Paper Numbers: 11-0778
Language: English
Authors: Muñoz, Jose FEffinger, Jacob BTejedor, M IsabelAnderson, Marc ACramer, Steven MPagination: pp 25-33
Publication Date: 2011
ISBN: 9780309167451
Media Type: Print
Features: Figures
(2)
; References
(15)
; Tables
(5)
TRT Terms: Uncontrolled Terms: Subject Areas: Highways; Materials; Pavements; I32: Concrete; I36: Aggregates
Files: TRIS, TRB, ATRI
Created Date: Nov 8 2011 11:22AM
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