Have you ever used solar reflective
Have you ever used solar reflective
(OP)
Have you ever used solar reflective coating in flexible pavements? If so, can you provide any references for this type of materials? I google it and appears that solar reflective coatings are used mainly in roofs. I didn't find good references for pavements. Thanks !





RE: Have you ever used solar reflective
RE: Have you ever used solar reflective
RE: Have you ever used solar reflective
The consensus seems to be that a flexible pavement, aka asphalt, attains the best albedo when the finish is a chip-seal coarse that takes advantage of whatever light reflecting properties the aggregate possess.
The only other flexible pavement binder produced in any volume and nothing approaching asphalt, is the polyester used for making polyester concrete. I believe the SF-Oakland Bay Bridge was re-paved with polyester concrete. There might be some albedo figures available from the Caltrans lab. Polyester concrete uses about twice the binder content compared to asphalt, so the change might not be as great as hoped for.
RE: Have you ever used solar reflective
There are commercial applications of chip seal on roadways:
http://asphaltmagazine.com/improving-chip-seal-per...
http://unitedpavinginc.com/chip-seal/
http://www.dot.ca.gov/hq/maint/MTAGChapter7-ChipSe...
http://www.webpages.uidaho.edu/bayomy/IAC/50th/Pre...
https://www.epa.gov/sites/production/files/2015-10...
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RE: Have you ever used solar reflective
RE: Have you ever used solar reflective
Working through the cost of concrete versus asphalt on new construction and you'll likely find that concrete is currently competitive to asphalt paving. We've recently bid (and constructed) two different multi-use paths with an asphalt "base bid" (3" HMA on 6" of Agg) and a concrete "alternate bid" (5" conc on improved subbase) and had concrete win both times. These were each 1 mile segments at 8 foot wide x 5 inches thick that were slipformed.
Rehab'ing an existing asphalt lot, I would certainly look at the seal coating with a "cool color" to pull it all together and maybe score the LEED credit.
RE: Have you ever used solar reflective
This source is a bit dated, but it might help: NCHRP Synthesis 338: Thin and Ultrathin Whitetopping
RE: Have you ever used solar reflective
RE: Have you ever used solar reflective
Datasheet: Link
RE: Have you ever used solar reflective
RE: Have you ever used solar reflective
RE: Have you ever used solar reflective
RE: Have you ever used solar reflective