HOT WEATHER WORKING WITH CONCRETE & MORTAR
Here are some precautions when handling, placing, finishing and curing concrete and mortar in hot weather:
CONCRETE
- Concrete slab should be sprayed with water and shaded from solar gain
- Schedule concrete pours for a cooler part of the day
- Stagger deliveries to prevent concrete from sitting in hot temperatures
- Dry and hot absorbent surfaces should be moistened before placing concrete
- Order concrete in a higher slump class to counter slump loss in hot conditions
- Increase workability to help placing
- Ensure adequate manpower available on-site to place concrete
- Specify a retarding admixture to delay the setting time
BUILDING MORTAR
- Keep in cool and shaded environment
- Store bricks and blocks in the shade
- Rinse tubs before mortar is put into them
- Place water on top of the tub cover to shield the mortar from heat
For more information, check out www.mpani.org
