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

Question

Muhammad Farooq · Answer

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 · Answer

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