Table of Contents
- 1 What is pervious concrete used for?
- 2 What is pervious concrete and how can it help?
- 3 Why is concrete used for pavements?
- 4 What are pervious materials?
- 5 What are the materials used for concrete pavement?
- 6 What is the purpose of pervious concrete?
- 7 Can pervious concrete pavements be used in cold weather?
What is pervious concrete used for?
Pervious concrete has applications in sustainable construction, and is often used in sidewalks, parking areas, and greenhouses. Using pervious concrete is recognized as a Best Management Practice for Stormwater by the US Environmental Protection Agency (EPA), since it provides pollution control.
What is pervious concrete and how can it help?
Pervious concrete (also called porous concrete, permeable concrete, no fines concrete and porous pavement) is a special type of concrete with a high porosity used for concrete flatwork applications that allows water from precipitation and other sources to pass directly through, thereby reducing the runoff from a site …
Why is concrete used for pavements?
Concrete paving is a lot cheaper than other products as it is manmade rather than a naturally occurring material. Concrete is a more cost-effective choice long term to other types of paving due to its durability and generally cheaper cost.
What goes under pervious concrete?
Typically around 90\% compaction for the subbase is recommended under pervious concrete pavements. On slopes steeper than about 5\%, implementing a french drain type channel across the slope is a good way to capture water and mitigate any affects from erosion.
How is concrete pavement made?
Fresh concrete is deposited in front of the paving machine which then spreads, shapes, consolidates, screeds, and float finishes the concrete in one continuous operation. This operation requires close coordination between the concrete placement and the forward speed of the paver.
What are pervious materials?
This material consists of concrete, asphalt, or pavers that contain air pockets, which allow rain and snowmelt flows to permeate the surface. While pervious paving materials are virtually indistinguishable from regular pavement, they offer significant benefits from an environmental standpoint.
What are the materials used for concrete pavement?
Made from cement, coarse aggregate (like gravel), fine aggregate (like sand), and water. These materials make up 60-75\% of concrete, while the rest is made up of chemical admixtures. Concrete can be shaped and/or molded to just about any shape.
What is the purpose of pervious concrete?
Pervious concrete is a concrete type with reduced sand or fines and allows water to drain through it. It is also called as porous, gap-graded or enhanced porosity concrete. It can be used to replace traditional impervious pavement for vehicular applications except high-volume roadways.
What is pervious paving?
Asphalt and concrete pervious pavements allow water to pass through the surface and temporarily settle in a stone reservoir before infiltrating into the ground.
What is permeable concrete pavement made of?
Pervious concrete pavement comprises of surface layer of the permeable pavement structure and consists of Portland cement, open-graded coarse aggregate (typically from 5/8 to 3/8 inch), and water.Admixtures are also added depending upon the nature and loading conditions of site. The thickness of pervious c… (more)
Can pervious concrete pavements be used in cold weather?
Pervious concrete pavement structures that incorporated frost-heave-reducing design features have been used successfully in Norway (Stenmark, 1995). Successful longer term installations of pervious concrete pavements in regions of cold weather also have been documented in North America .