Annotated Literature Review for NCHRP Report 640 (2009) / Chapter Skim
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2 1.1.2 Benefits of Permeable Asphalt Mixtures Porous asphalt allows water to drain from the surface of pavement because of its gradation and aggregate make-up. Because of the high air-void content in the mix, the surface water can drain, which reduces road spray, improves skid resistance and decreases road glare (increasing vision)
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3 the mixture. Small amounts of asbestos fibers had been used; however, because of the health issues related to asbestos, Belgium decided to investigate the use of cellulose (organic)
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4 during the test, even at the low asphalt binder content. For the six mixes that did contain cellulose fibers, the amount of binder loss was significantly lower than the mix with no fibers.
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