SECTION 403
SECTION 403 -- HOT BITUMINOUS PAVEMENT
Description
1.1. This work shall consist of constructing one or more courses of bituminous pavement on a prepared base as shown on the
plans or as ordered. The methods may be classified as hand or machine.
SECTION 401
Appendix A
NHDOT Test Procedure B-7
Sampling Bituminous Paving Mixtures For Acceptance Testing
Sample shall be taken behind the paver after placement and before compaction.
Sample location is randomly selected by the Contract Administrator.
When paving over aggregate base course or cold planed surface, use a rectangular metal plate no less than 12” each side.
Center plate on sample location.
After paver passes over plate, measure back to sample location.
Locate the edges of the plate.
SECTION 401
5.6.3 Pay adjustment, Hot Bituminous Pavement QC/QA Ttems. The pay adjustment for gradation, cross slope,
thickness, asphalt binder content, in place air voids, and ride quality (made up of the sum of all sublots) will be applied to item
1010.3. Pay adjustments may be applied at the end of each month based on all available test results for each lot.
5.7 The accepted quantity of joint adhesive of type specified will be paid for at the Contract unit price per linear foot complete
in place.
SECTION 401
Table 401-119 - Sieve Size Weight Factors 3/4”
Property Weight Factor “ f”
3/8” 6
#30 4
Gradation (each sieve) #8, and #200sieves gs
Ai other Sieves (each)
Table 401-11b - Sieve Size Weight Factors 1/2” and 3/8”
Property Weight Factor “
fr’
No. 4
_Gradation (each sieve) "#8, and #200 sieves
All other sieves (each) SSS
tool Bin
[A (PR) + (PB )+.-f (PE)
af
Composite Pay Factor (CPF) =
SECTION 401
Paving operations shall not resume until the Engineer determines that material meeting the Contract requirements can be
produced. Corrective action will be considered acceptable by the Engineer if the pay factor for the failing property increases. If
it is determined that the resumption of production involves a significant change to the production process, the current lot will be
terminated and a new lot will begin.
3.17.3.6.3 Remeasure and Retest. All requests to the Engineer to remeasure and retest a sublot shall be in writing.
SECTION 401
(a) Where the wearing course must be constructed in short sections (<3 sublots).
(b) Projects shorter than one half mile in length.
{c) Projects with a posted speed of 35 MPH or less.
(d) Projects with many driveways and/or cross roads with constant traffic.
(e) District resurfacing projects.
3. 17.3.5 Cross Slope.
SECTION 401
The complete sampie(s) (unseparated) shall be protected against damage, transported and delivered by the Contractor within
one working day to NHDOT testing technicians at the testing lab location. Sublots where the core becomes lost or damaged will
be resampled at the direction of the Engineer at the Contractor’s expense.
The specification limits in Table 401-7 will be used for calculating pay factors for in place air voids for each lot:
Table 401-7 - In Place Air Voids Acceptance Limits
TARGET (%) LSL USL
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)
SECTION 401
3.17.2.3 Sublot Size. The quantity represented by each sample will constitute a sublot. The size of each sublot shall be as
listed under the sublot size heading in Table 401-4. If there is insufficient quantity in a lot to make up at least three sublots of
the designated size in Table 401-4, then the lot quantity will be divided into three equal sublots.
