| 
Working with Ready-Mix concrete is affected
by weather and requires special precautions to be taken to
ensure proper handling, placing, finishing & curing of
the freshly placed concrete.
Hot weather alone or in combination with
high wind and dry air can produce a rapid moisture loss from
the surface of the concrete, accelerate set, decrease air
content and reduce strength. In some cases high humidity “may”
offset some of these concerns.
Extreme Cold Weather also requires attention
to the process. Concrete will lose moisture and heat rapidly
in cold weather which will affect its setting time, strength
and long term durability.
In addition to professional on-site practices
such as warming the sub-grade in cold weather OR dampening
the sub-grade in hot weather, it is highly recommended that
the following best practices are adhered to in order to ensure
a desired end result:
- Schedule your ready-mix truck orders in a manner that
allow for the most efficient use – adjust your schedule
accordingly, well in advance during hotter or colder weather
conditions to minimize waiting time and avoid trucks and/or
wet concrete “sitting”.
- Provide a sufficient work force to eliminate any delays
during construction, thereby accommodating any changes due
to variances in temperature and to coincide with your deliveries.
Add extra workers on hot, dry days.
- In some cases, during extreme weather conditions consider
early morning, evening or nighttime concrete placement.
|
