Assertion: stone matrix asphalt | /r/HasProperty | sma
Facets:
Source sentences:
text: Research in the U.S. and Europe shows that a Stone Matrix Asphalt (SMA) or Open-Graded FrictionCourse (OGFC) asphalt pavement mix will reduce highway noise by 3 to 5 dB(A).
text: There is no fineness standard for mineral filler beyond the AASHTO M 17 gradation requirements; however, when Stone Matrix Asphalt (SMA) was first introduced to the U.S. in 1990, often a requirement for a maximum percent passing the 20 µm (No. 635) sieve was specified.