Smokey Point Concrete and Skagit Readymix - pervious concrete

By: Smokey Point Concrete  11-11-2011

Related Product Info:

To see how you can use Pervious Concrete in an innovative way, we have put together a sample gallery of 20-25 of our finished projects.

PDF Brochure Downloads:

When it rains. It drains.

Pervious concrete has a 15-25% void structure and allows 3-8 gallons of water per minute to pass through each square foot - accounting for far more than is generated during most rain events.

Pervious concrete puts rainwater back in the ground where it belongs.

The best application for pervious concrete is parking lots.

What is Pervious Concrete?

Pervious Concrete is an alternative to costly stormwater management practices.  Pervious concrete acts as a drain and reduces the need for detention ponds in an environmentally safe way.  Pervious concrete puts the rainwater back into the ground while the strength and durability remains strong.  Pervious Concrete is made from cement, coarse aggregates, water, and other special components to produce sufficient paste and bonding ability to glue the aggregates together. 

Pervious concrete is a mix of coarse aggregate, cement, water, and little to no sand. Also known as “no-fines” or porous concrete, this mixture creates an open-cell structure, allowing rainwater to filter through to underlying soil. By modeling natural ground cover, pervious concrete is an excellent choice for stormwater management.

Benefits of Pervious Concrete

  • Reduces stormwater runoff
  • Eliminates need for detention ponds and other costly stormwater management practices
  • Replenishes water tables and aquifers
  • Allows for more efficient land development
  • Minimizes flash flooding and standing water
  • Prevents warm and polluted water from entering our streams
  • Mitigates surface pollutants
  • Salmon Friendly
  • Mimics Natural Infiltration

Why is Pervious Concrete a Sustainable Solution?

  • Eliminates untreated storm water and creates zero runoff
  • Directly recharges groundwater
  • Mitigates first flush pollution
  • Protects streams, watersheds, and ecosystems.
  • Mimics the drainage and filtration of bioswales and natural soils
  • Reduces surface temperatures & heat island effects
  • Provides a higher albedo surface reflectivity index (0.35 or higher)
  • Eliminates need for expensive collection and detention systems

Placement of Pervious Concrete (Simple Overview)

A. Finishing contractors should be trained and experienced in the placement of Pervious Concrete!

  1. Properly prepare subgrade to an uncompacted condition.
  2. Place & compact designed retention / recharge gravel layer.
  3. Some conditions may require installation of filter fabrics.
  4. Prepare paving lanes. Elevate final form grade 3 - 1 inch above forms.
  5. Bring pervious concrete to a “wet metallic sheen” condition.
  6. Place pervious concrete using concrete rakes or tines only.
  7. Screed pervious concrete to elevated form grade using minimal vibration.
  8. Remove elevated form shims.
  9. Insure edges of forms are uniformly filled with pervious concrete, lightly compact.
  10. Immediately cover pervious concrete with plastic sheeting.
  11. Using a heavy roller, compact pervious concrete to original form height.
  12. Install joints as per joint layout design (can be done following placement).
  13. Secure plastic sheeting to prevent wind removal.
  14. Cure pervious concrete with plastic sheeting in place for 7 days.
  15. Protect against landscaping materials and perimeter run on.
  16. Open to traffic!

What About Freeze / Thaw?

Pervious Concrete is not designed nor intended as a storage area. Water passes directly through the pavement and into the retention layer below. Freeze / Thaw is not a concern in western Washington as our temperatures and freeze / thaw conditions are nominal.

What About Clogging?

Clogging of any pervious surface can be a concern. It is highly unlikely a majority of any pervious surface will become 100% clogged. Water will always seek the next point of infiltration.

What About Maintenance?

Good common sense approaches to prevent placement of landscape materials and cleaning of any pervious surface are recommended practices. For parking areas, your regular parking lot sweeping / vacuuming program should be sufficient.

Other products and services from Smokey Point Concrete


Smokey Point Concrete and Skagit Readymix - readymix concrete

SPC / SRM has developed over 400 mixes, has a number of concrete tools and supplies, and are excited to help you finish your job and create the look you want. Concrete is just like the sponge that you leave on the edge of the sink after you cleaned your dishes. Concrete utilizes cement as a glue to hold together a mixture of stone, sand, water and cement.


Smokey Point Concrete and Skagit Readymix - aggregates

To order your aggregates for delivery please call Skagit Readymix serving Skagit County at 360-856-0422 or Smokey Point Concrete serving Island and Snohomish Counties at 360-435-5791. The width of our dump trucks are approximately 10 feet, the trucks mirrors stick out further and prefer a 12 foot width opening. Smokey Point Concrete and Skagit Ready Mix sell aggregate at their plant locations and also provide delivery.


Smokey Point Concrete and Skagit Readymix - contractor tools

Smokey Point Concrete and Skagit Readymix offers a limited supply of products from bull floats, trowels, and hand edgers to sealers, colors, and hardeners. Please provide at least one week for us to order your special tool. Ask dispatch for more information next time you are in our office.


Smokey Point Concrete and Skagit Readymix - decorative concrete

This product allows for the clean release of texturing tools from the concrete surface, and at the same time, creates highlighting color with mat-type texturing tools. QC Concrete Resurfacer HD is a two-part polymer-modified cementious coating, consisting of a unique rubber-like polymer liquid and a cement aggregate blend.


Smokey Point Concrete and Skagit Readymix - redi rock

To see Redi-Rock and how you can use it in an innovative way, we have put together a sample gallery of 20-25 of our finished Redi-Rock projects. Redi-Rock also offers in-house engineering support as well as great training and dealer support. Each block locks together and provides the option for building taller walls. Taller reinforced retaining walls can be designed with our geo-connector.


Smokey Point Concrete and Skagit Readymix - concrete admixtures

Water-Reducers are chemicals used to lower the water content and increase strength or to obtain a higher slump using the same water content for pumping the concrete or when you are dealing with hot weather. A Stabilizer is recommended for use in all types of concrete where moderate to extended retardation of set time and improved performance are desired.