Minimum Binder Content to be 6.0% for 3/8” mix designs; 5.5% for %” mix designs; and 4.6%
for %4” mix designs. All pavement mixes shall have a maximum Total Reused Binder (TRB)
content of 0.5% and meet all the volumetric mix design criteria.
Hot Bituminous Pavement to be placed under NHDOT Section 401 “Method Requirements” (not
“QC/QA”).
Specific pavement mix and thickness for this contract shall be as specified in the Supplementary
Conditions or directed by the Engineer.
Testing:
Pavement testing will be completed by a testing agency selected by the City.
The Contractor shall furnish all materials, labor, equipment, and transportation necessary to take
loose asphalt samples, cut cores, and patch core hole as directed by the Engineer. Cores and
samples shall be delivered to a location in Nashua to be identified by the Engineer.
Cores shall be 6” in diameter and cut to the subbase. After core has been cut, contractor shall
thoroughly remove all water in the core hole, tack sides of core hole, fill hole with hot mix
asphalt, and compact until required densities are achieved. Contractor shall provide ice to cool
mix when ambient temperatures are high.
Contractor shall provide two container types. One shall be of sufficient size and quality to
contain 3 shovels full of asphalt. The other shall be of sufficient size and quality to contain a 6”
diameter core of varying thickness. Containers shall have an area for labeling.
Contractor and City shall agree to order of paving 24 hours prior to placement of mix. Paving
must be completed in a way that does not complicate tonnage tracking for identifying sample
locations. When directed by the Engineer, the Contractor shall pave an entire street or group of
streets before paving other streets.
C. MEASUREMENT AND PAYMENT
This item will be paid per Ton of placed, compacted, sampled, and cored hot bituminous
pavement, machine method as approved by the Engineer. A price adjustment for liquid asphalt is
provided in this contract as outlined in Item 900 Liquid Asphalt Adjustment. No payment will be
made for materials delivered but not placed.
Contractor shall record the tons of material placed and compacted for each street. Payment is
contingent upon submittal of quantities and delivery slips in a per street format.
Work and expenses associated with providing loose samples shall be incidental to this item.
Cores shall be measured and paid under Item 1010.9.
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