Drying shrinkage of conrete samples exposed to extreme hot weather

M. Alshamsi, H. D. Imran, A. Bushlaibi

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

2 Citations (Scopus)

Abstract

Drying shrinkage is of great importance to concrete engineers, especially when dealing with hot climates. High ambient temperatures and low humidity accelerate evaporation of moisture from concrete resulting in increased drying shrinkage when compared to normal or cool climates. However, when dealing with the real environment (daily and seasonal weather factors variations), the matter becomes complex. While some factors will increase shrinkage and therefore result in contraction, other daily or seasonal factors may reverse such an effect. To explore the effect of mixing time and season of cast on normal strength concrete (NSC), two concrete mixes were cast and tested in real environment of Alain city (interior region in the UAE). Each mix was cast twice, once in summer and once in winter. The samples were cast, cured and kept in the outdoor environment. All samples were cured for three days after which they were left exposed to the environment. Shrinkage was then immediately measured. The effect of mixing duration was also investigated. Samples were cast after 20 minutes, 40 minutes and 60 minutes from the start of mixing. Plain OPC, and OPC/microsilica combinations were used. Mixing was carried out by a certified ready mix plant. The results indicated that while significant effect of season of casting was evident, no significant influence of mixing duration was apparent on drying shrinkage of concrete.

Original languageEnglish
Title of host publicationCement Combinations for Durable Concrete - Proceedings of the International Conference
PublisherICE Publishing
Pages357-362
Number of pages6
ISBN (Print)0727734016, 9780727734013
DOIs
Publication statusPublished - 2005
Event2005 International Congress - Global Construction: Ultimate Concrete Opportunities - Dundee, Scotland, United Kingdom
Duration: Jul 5 2005Jul 7 2005

Publication series

NameProceedings of the International Conference on Cement Combinations for Durable Concrete

Other

Other2005 International Congress - Global Construction: Ultimate Concrete Opportunities
Country/TerritoryUnited Kingdom
CityDundee, Scotland
Period7/5/057/7/05

Keywords

  • Drying shrinkage
  • Hot weather
  • Mixing duration
  • Normal strength concrete

ASJC Scopus subject areas

  • General Engineering

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