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What are the precautions during hot weather concreting,in the two cases mix production and construction?

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Question added by Amjad Alomari , TECHNICAL DEPARTMENT MANAGER , Civil and Electromechincal Construction Co.(CEMCCO)
Date Posted: 2016/11/27
Muhammad Farooq
by Muhammad Farooq , QA-QC MANAGER , AL Bawani contracting co.

  • Ambient temp shall not be exceeded set by the relevant countries. In KSA 40 degree and in Canada 27 degree centigrade
  • Concrete temp in KSA shall not be exceeded by 32 degree 
  • Night pour is preferable
  • Cool down coarse and fine aggregate by shading and sprinkling
  • Use of chill water and ice if does not disturb water content (W/C ratio)
  • Better if concrete batch plant set up at site OR Time between Batch time and pouring time shall need to be kept minimize
  • Use of water reducing agent
  • Retarded admixture but with caution because it may reduce concrete compressive strength.
  • Better to make workable concrete  Slightly higher slump but shall not be crossed 150mm limit with superplasticizer ( Normal Concrete)
  • quickly placed the fresh concrete OR avoid delay in pouring etc.

Eduardo Pinza
by Eduardo Pinza , Safety Engineer , Ali & Sons Contracting Co. LLC

as per to work per procedure follow the specific Safety plan & Risk Assessment. use specific P.P.E. as required to the work scope.

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