SECTION 401
3.12.3.2 All compaction units shall be operated at the speed, within manufacturers recommended limits, that will produce
the required compaction. The use of equipment, which results in excessive crushing of the aggregate will not be permitted. Any
asphalt pavement that becomes loose, broken, contaminated, shows an excess or deficiency of asphalt binder, or is in any way
defective, shall be removed and repiaced at no additional cost with fresh hot asphalt mix, which shall be immediately compacted
to conform with the surrounding area. Hot asphalt mix shall not be permitted to adhere to the roller drums during rolling.
3.12.3.3 The type of rollers to be used and their relative position in the compaction sequence shall be the Contractor's option,
provided specification densities are attained and with the following stipulations:
a) At least one roller shall be pneumatic-tired.
b) Vibratory rollers shall not be operated in the vibratory mode under the following conditions: When checking
or cracking of the mat occurs, when fracturing of aggregate occurs, and on bridge decks.
3.13 Joints - General.
3.13.1 Unless otherwise shown on the plans, the longitudinal wearing course joints shall be at the edge of lane placed, where
the edge line, fane line and centerline pavement markings will be applied, and joints of other courses shall be offset approximately
6".
3.13.2 The material being placed next to a previously paved lane shall be tightly crowded against the face of the abutting
lane. The paver shall be positioned so that during spreading, the material will overlap the edge of the first lane by 1 to 2” and
shall be left sufficiently high such that finish pavement of the lane being placed is approximately 1/8” higher than the previously
paved lane after compaction. The overlapped material shall be rolled without luting. Longitudinal joint compaction shall be
achieved by rolling from the hot side to within 6" of the previously placed mat. The next roller pass will overlap onto the
previously placed paved lane by 6” Further compactive effort shall be applied to all joints during the intermediate and final
rolling.
3.13.3 Placing of the course shall be as continuous as possible while complying with Contract Traffic Control Plans.
Transverse joints will be allowed at the end of each work shift or as required to provide properly bonded longitudinal joints.
3.13.3.1 No longitudinal joints greater than 1-1/2” height shall be left open to traffic unless a tapered overlapping (“wedge”)
joint is used. Centerline joints greater than 3/4” shall be properly delineated by tubular marker and signed appropriately. Joints
between traveled way and shoulder greater than 3/4” shall be delineated by barrels. Tubular markers and barrels shall meet the
requirements of Section 619. Tubular markers shall be secured to the pavement.
3.13.3.2 Unless otherwise precluded by weather conditions, longitudinal joints shall not remain open to traffic longer than
30 hours.
3.13.4 Ifa bulkhead is not used to form the transverse joint, the previously laid material shall be cut back to the designed
slope and grade of the course. The joint face shall be coated with approved bituminous bonding material meeting the
requirements of 410.2.1 before the fresh mixture is placed against it. Extreme care shall be taken to ensure that no unevenness
occurs at the joint. If unsatisfactory riding qualities are obtained at the transverse joint in the wearing course, the joint shall be
corrected by an approved method.
3.13.4.1 Prior to opening any lane(s) to traffic, transverse joints shall be ramped by means of an asphalt fillet at a minimum
of 5 ft. horizontal to 1” vertical slope.
3.13.4.2. When paving into a permanent transverse joint, a full head of material shall be carried into the joint.
3.13.5 When specified, a bituminous pavement joint adhesive, Item 403.6, shall be applied to the longitudinal joint. If joint
adhesive has not been specified, an approved bituminous bonding material meeting the requirements of 410.2.1 shall be applied
to completely cover all joint contact surfaces.
3.13.5.1 Joint adhesive shall be applied to the longitudinal joints so that the entire joint surface is covered with a minimum
1/8” thick layer of material. If a wedge joint is used the upper 4” of joint surface shall be covered with joint adhesive. In lieu of
using joint adhesive, the Contractor may elect, with the approval of the Engineer, to use multiple pavers in echelon to eliminate
the longitudinal joint. Echelon paving shall be performed as stated in 3.13.8,
3.13.5.2 The joint face on which the joint adhesive is to be applied shall be dry, free from loose material, dust, or other
debris that could interfere with adhesion. If dust or debris adheres to the joint adhesive, it shall be cleaned or recoated as directed
by the Engineer.
3.13.5.3 Trucks or traffic shall not drive across the joint adhesive until it has cooled sufficiently to prevent damage from
tracking.
2016 NHDOT
Go To=) TOC Division 100 Division 200 Division 300 Division 400 Standard
Division 500 Division 600 Division 700) Specifications
