Difference between revisions of "Permeable pavements: Climate"
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| − | Concerns over the resistance to the | + | |
| + | ===Pervious concrete=== | ||
| + | Concerns over the resistance to the freeze-thaw cycle have limited the use of pervious concrete in cold weather environments.<ref name="Cold Weather">Vernon R. Schaefer, Keijin Wang, Muhammad T. Suleiman, John T. Kevern, Mix Design Development for Pervious Concrete in Cold Weather Climates, , Iowa State University, Ames, IA, 2006 National Concrete Pavement Technology Center. Report No. 2006-01.mix_design_pervious.pdf</ref> The rate of freezing in most applications is dictated by the local climate. Entrained air may help protect the paste like in normal concrete.<ref name="Entrained Air"/> The addition of a small amount of fine aggregate to the mixture increases the durability of the pervious concrete.<ref>J. Kevern, John K. Wang, V.R. Schaefer, Iowa State University, 2008</ref> Avoiding saturation during the freeze cycle is the key to the longevity of the concrete.<ref name="Concrete Tech">{{cite web|title=Pervious Concrete and Freeze-Thaw|url=http://www.cement.org/tech/Pervious_print.html |work=Concrete Technology E-Newsletter |publisher=PCA |accessdate=30 September 2012}}</ref> Related, having a well prepared 8 to 24 inch (200 to 600 mm) [[Grading (engineering)|sub-base]] and drainage will reduce the possibility of freeze-thaw damage.<ref name="Concrete Tech"/> | ||
Revision as of 23:38, 13 November 2017
Pervious concrete[edit]
Concerns over the resistance to the freeze-thaw cycle have limited the use of pervious concrete in cold weather environments.[1] The rate of freezing in most applications is dictated by the local climate. Entrained air may help protect the paste like in normal concrete.[2] The addition of a small amount of fine aggregate to the mixture increases the durability of the pervious concrete.[3] Avoiding saturation during the freeze cycle is the key to the longevity of the concrete.[4] Related, having a well prepared 8 to 24 inch (200 to 600 mm) sub-base and drainage will reduce the possibility of freeze-thaw damage.[4]
- ↑ Vernon R. Schaefer, Keijin Wang, Muhammad T. Suleiman, John T. Kevern, Mix Design Development for Pervious Concrete in Cold Weather Climates, , Iowa State University, Ames, IA, 2006 National Concrete Pavement Technology Center. Report No. 2006-01.mix_design_pervious.pdf
- ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedEntrained Air - ↑ J. Kevern, John K. Wang, V.R. Schaefer, Iowa State University, 2008
- ↑ 4.0 4.1 Template:Cite web