asphalt


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asphalt

a suspect but appears not to be poisonous.
References in periodicals archive ?
The asphalt used in this study is a standard asphalt named AAF-1 (grade AC-20, crude W TX Sour), provided by the SHRP Materials Reference Library.
Concrete and asphalt suppliers are shrinking because performance specifications are being elevated by various state highway departments to economize construction costs and prolong performance.
CANYON COUNTRY - Two trucks came together in a fiery collision Tuesday, shutting down a stretch of the Antelope Valley Freeway in Newhall for hours as workers cleaned up tons of hot asphalt that poured from one of the tankers, authorities said.
ASPHALT DEMAND (million metric tons) % Annual Growth Item 1995 2000 2005 00/95 05/00 Asphalt Demand 87.
He then places sensors on asphalt pavement samples and hits them with a spring-loaded hammer.
The asphalt industry defines "sand" as a granular material with given physical and chemical characteristics.
In the asphalt paving sector, "Recycled products are worth what they replace plus any disposal fee [and] minus the processing cost required to get the material into the hot mix asphalt plant," Brock told attendees.
Specific considerations include: shingle aggregate gradation, performance grade (PG) of the virgin and RAS binder and relative reduction of the virgin asphalt binder due to replacement by RAS binder.
While owner All American Asphalt of Corona has built a $10 million, state-of-the-art plant that has reduced dust and emissions, a plan that would allow it to sell to more customers than just Los Angeles has once again triggered debate over the facility's future.
Asphalt is one concern, as it contains coal tar pitch, a recognized human carcinogen, as well as polycyclic aromatic hydrocarbons (PAHs) including benzo[a]pyrene, another carcinogen.
Increases in asphalt demand in paving applications will be aided by road construction and maintenance activity.
Thorpe said testing will continue today on the 14-mile line's pavement, an interconnected puzzle of base material and varying layers of asphalt, depending on the strength of the soil below.