Michael
Riggs owns Progressive Concrete Works Inc., in Phoenix. "We
place all concrete at a maximum slump of 5 inches," says
Riggs. "Consistency is very important and every load
should be placed at the same slump so that the texture and
color will be consistent." A lower slump can also prevent
oozing between stamps, says Riggs.
To ensure a consistent impression,
Riggs places 4 inches of aggregate base course and then compacts
the subgrade before placing any concrete. "We have found
that this helps us achieve a more consistent finish and also
helps to prevent efflorescence," he says.
As with all concrete, weather and sunlight
affect surface hardness. Surface hardness has a significant
impact on the texture as well as the color. When setting up
a job with areas in direct sunlight and areas in shade, Riggs
says to consider how the inconstancy will affect the finishing.
If possible, consider placing the areas separately.
Michael
Riggs owns Progressive Concrete Works Inc., in Phoenix. "We
place all concrete at a maximum slump of 5 inches," says
Riggs. "Consistency is very important and every load
should be placed at the same slump so that the texture and
color will be consistent." A lower slump can also prevent
oozing between stamps, says Riggs.