NICET CMT Asphalt case studies
NICET CMT Asphalt · Put your knowledge to work in context.
CMT-Asphalt is one of the Civil Engineering Technology Programs listed by NICET, alongside CMT-Concrete, CMT-Soils, and CMT-Performance Examinations (Optional). It is aimed at technicians who test and inspect asphalt materials and placement on civil and highway construction work, and it sits in the same program family as Highway Construction Inspection. NICET publishes its certification programs, exam scheduling, work experience, training, and practice test resources through nicet.org, and it maintains separate pages for recertification and for upgrading a certification to a higher level. The exam itself is delivered through NICET's testing process; scheduling and re-scheduling are handled through the NICET site after registration and login. The NICET CMT Asphalt case studies are 5 cases and about 2,992 words.
1Nuclear Gauge vs. Cores on a Thin Overlay
A 2.0 in (50 mm) mill-and-fill overlay is being placed on a granular base. The specification requires a minimum of 92.0% of Gmm.
663 words, about 3 min2Low Longitudinal Joint Density on a Butt Joint
A 2 in (50 mm) hot-mix asphalt overlay is being placed in 12 ft lanes against a lane paved two days earlier. The joint is a butt joint with a 1.5 in overlap.
646 words, about 3 min3Marshall Stability Outlier in a 12.5 mm Surface Mix
A laboratory is verifying a Marshall mix design for a 12.5 mm surface mix at 5.7% AC. Three 4 in specimens from one batch are compacted with 75 blows per side at 275°F.
575 words, about 3 min4Superpave Mix Failing VMA and Dust-to-Binder
A 12.5 mm Superpave surface mix is being designed at Ndesign = 100 gyrations. At 5.5% asphalt binder, the trial blend gives Gmm 2.500, Gmb 2.400, air voids 4.0%, VMA 13.6%, VFA 70.6%, and dust-to-binder ratio 1.7.
539 words, about 3 min5Ignition Oven and Solvent Extraction Disagree After an Aggregate Change
A plant has changed its coarse aggregate from crushed limestone to a slag blend. The QC technician runs the ignition oven (AASHTO T 308) on a split sample and reports 5.82% asphalt content.
569 words, about 3 min