How do you seal pervious concrete?
Use a penetrating sealer manufactured specifically for concrete. Concrete penetrating sealer should not be confused with impermeable sealers such as asphalt seal coats. Anti-icing pre-treatments should never be used on pervious concrete pavements.
How do you strengthen pervious concrete?
Pervious concrete has reduced strength compared to the con- ventional concrete but studies show that it can be increased by using smaller sized aggregates (3), flexural strength can be increased by using latex, polymers etc as admixtures (4), freeze-thaw and abrasion resistance could be increased by us- ing cellulose …
Can you stain pervious concrete?
That said, the use of acid stain on pervious will require a lot of neutralizing material due to the nature of the pervious surface. Typically, both acid and water-based stains will require some sort of sealer to hold the color permanently. The problem is acrylic sealer applied by normal methods will clog the slab.
Can pervious concrete be colored?
That’s because pervious concrete can be integrally colored to match the surrounding landscape or to provide a complementary or contrasting hue to make pavement stand out visually. Pervious concrete can be tinted with the same integral pigments used to color other concrete products.
How long does it take for pervious concrete to cure?
Fisher says pervious concrete should have a “Tupperware” seal covering the entire slab. The plastic should remain on the slab for seven days. That time should be increased to 10 days or more if fly ash or other supplementary cementitious materials are used in the pervious mix, Fisher adds.
How strong is pervious concrete?
In the laboratory, pervious concrete mixtures have been found to develop compressive strengths in the range of 500 to 4000 psi (3.5 MPa to 28 MPa), which is suitable for a wide range of applications. Typical values are about 2500 psi (17 MPa).
How long does pervious concrete take to cure?
seven days
Fisher says pervious concrete should have a “Tupperware” seal covering the entire slab. The plastic should remain on the slab for seven days. That time should be increased to 10 days or more if fly ash or other supplementary cementitious materials are used in the pervious mix, Fisher adds.
Can you pressure wash pervious concrete?
According to a study by University of Central Florida, the standard practices for cleaning pervious concrete should include pressure washing, power blowing and vacuum sweeping. Dry-vacuuming the surface annually with a vacuum sweeper can help dislodge and remove hidden dirt and debris.
What slump is pervious concrete at?
Fresh Properties. The plastic pervious concrete mixture is stiff compared to traditional concrete. Slumps, when measured, are generally less than ¾ inches (20 mm), although slumps as high as 2 inches (50 mm) have been used.
Is permeable concrete more expensive?
Over its lifetime, pervious concrete can be a much more inexpensive option than traditional concrete, even though the installation cost of pervious is typically higher than that of traditional concrete.