THE CAROLINA STATES EDITION
A Supplement to:
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17
29
52
1
40 23
77 85
74
85
421
74
70
17
264
220
23 25
85
26
85 74
385
77
40
1
74
95 20
26 25
October 6 2010
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64
40
13
95
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PKY
501
76
17
20 52
321 78
301 26 17
Vol. XXII • No. 20
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“The Nation’s Best Read Construction Newspaper… Founded in 1957.”
Your Carolina States Connection • Richard McKeon, Charlotte, NC 1-800-288-4234 Approximately 6 mi. (9.7 km) of milling can be completed each day. That’s for one lane. When they come back and put down the S12.5C about 1.5 mi. (2.4 km ) per day in one lane can be resurfaced.
Repavement of I-40 in North Carolina’s Duplin, Sampson Counties Nearly Done By Peter Hildebrandt CEG CORRESPONDENT
The median lane is completed first because the crown on the road goes from the median to the outside lane, allowing the water to drain off. They pave the median lane so that they won’t be trapping water against the joint.
The hot weather North Carolina endured for much of the summer of 2010 was actually a plus for the work proceeding on the repaving of Interstate 40 through Duplin and Sampson County, according to Ken Batchelor, NCDOT resident engineer. For putting down open-graded asphalt friction course, as is being done now on this stretch of highway, the hotter the better. The asphalt mix contains PG 76-22 binder that makes hand work difficult. When the air temperature is hot, the job goes even smoother and quicker. “It’s about the equivalent of working with bubblegum,” explained Batchelor. “If it’s too cool you are unable to do little if any hand work with it.” Sampson and Duplin Counties are about 50 mi. south of Raleigh. Batchelor works out of Clinton, N.C., just east of the location of the Fayetteville office of the highway contractor on the project, Barnhill Contracting Company. The
project itself is 15 mi. east of Batchelor’s office. He is the resident engineer for highway contract projects in NCDOT Division 3, which consists of six counties. His work is concentrated in Duplin and Sampson counties. Re-Establishing an Effective Road Top System “What is currently on this stretch of highway has been out there for 12 to 14 years. And I don’t know how long this asphalt mix has been around before that,” said Batchelor. “There’s nothing here with this technology that’s really new. I don’t think it’s being utilized a whole lot, but more and more they are going to this type of paving simply because of the safety factors involved with it.” The time had come to do something. The existing friction course was raveling, actually coming up in some sections and there were minor failures in the roadway. “I think the division was having some problems with recurring accidents during rain so they put down the friction see REPAVEMENT page 6