Asphalt Binder _
08
04 0.4
04
0.4
SECTION 401
Any sublot with a gradation or asphalt binder content falling outside the ranges of the reject limits in Table 401-6 will be
cither removed and replaced at the expense of the Contractor or require corrective action to the satisfaction of the Engineer. After
replacement or correction, new samples will be taken and the old test results from that sublot will be discarded.
Table 401-6 - Gradation and Asphalt Binder Content Reject Limits (Deviation from Target)
SIEVE SIZE ee ee ee
_ nt Passing By Weight - Combined Aggregate
a ff
mens =
Rg ee [3 a
No. 50 , () (1)
To cerns noef con igen bo i
Sag ofeach as
___ Asphalt Binder: % of Mix. —
(1) Reject limits will be waived for these sieves.
The Contractor shall have the option of requesting a change in job mix formula (aim change) values used for calculating
quality level to reflect actual production values after the placement of two sublots as long as no change in plant production values
are made. A new lot is not needed for this change.
3.17.3.2 In Place Air Voids, In place air voids shall be determined in accordance with AASHTO T 269 using 6” diameter
cores taken from each pavement layer by the Contractor in the presence of the Engineer. Core sampling shall be in conformance
with ASTM D 5361 and NHDOT B-8 (see Appendix A). Full depth cores containing all new pavement layers shail be required.
Core locations (center of core) will be established by selecting a random location within each sublot in accordance with Section
106. When shoulders are overlayed, cores shall be collected solely for density information at a frequency of one core for every
750 tons of mix.
(a)
(b)
(c)
(d)
Cores will not be located in the following areas:
Within 1 foot from an edge of pavement.
Within 4 feet from any structure. Core locations falling within this area will be relocated 4 feet from the
structure along station at the same offset.
Within shoulders 4 feet or less in width.
Within 1 foot from any break in slope across the mat surface.
Cores shall be taken before opening pavement to traffic, except when location of core is within the last hour of that day’s
placement. Cores shall be taken within 24 hours after placement. Where cores have been taken, new material shall be placed
and compacted to conform to the surrounding area the same day the samples are taken. Core samples shall be accompanied by
a sample tag containing the following information:
(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
(i)
(i)
Go To=} TOC Division 100
Project name & number.
Lot and sublot number.
Material Type.
Date placed.
Date sampled.
Location in station and offset, and/or tonnage.
Plan thickness.
Contract Administrator
Sampler
[tem number
2016 NHDOT
Standard
Specifications
Division 300 Division 400
Division 700
Division 200
Division 500 Division 600
