3. Concreting in hot weather
High temperatures (> 30°C) affect concrete at different levels. Firstly, they affect the workability of fresh concrete, then they affect setting and hardening speeds, and finally, they aggravate the consequences of shrinkage.
3.1 Effects on workability of fresh concrete
Any rise in temperature encourages the evaporation of free water from fresh concrete, which naturally lowers its plasticity. This drop in plasticity is measured by consistency tests (slump or spread).
For concrete with a relatively low effective water content, evaporation may restrict the development of hydration reactions. In the latter case, the possibility of slightly increasing the water dosage or adding a water-reducing plasticizer to the mix can be tested beforehand,...
Exclusive to subscribers. 97% yet to be discovered!
Already subscribed? Log in!
Concreting in hot weather
Mass concreting
Article included in this offer
"The superstructure of the building"
(
128 articles
)
Updated and enriched with articles validated by our scientific committees
A set of exclusive tools to complement the resources
Bibliography
Exclusive to subscribers. 97% yet to be discovered!
Already subscribed? Log in!
