405EVALUATION OF ASPHALT PAVEMENT LONGITUDINAL JOINT DENSITY AND PAYMENT OF INCENTIVE/DISINCENTIVE

DENSITY AND PAYMENT OF INCENTIVE/DISINCENTIVE

405.1DESCRIPTION—This work is evaluating asphalt pavement longitudinal joint samples on the surface

wearing course for determining densities and the incentive/disincentive.

405.3CONSTRUCTION—

405.3(b). These incentive/disincentive lots are completely independent from lots defined in other sections of these Specifications for pavement acceptance. The Representative will determine the payment addition or deduction.

Representative will designate lots as the longitudinal joints on the project are constructed, beginning on the first day wearing course paving abuts a previously placed wearing course, forming a longitudinal joint. Joints constructed with tandem pavers will be included, unless otherwise indicated. As paving progresses and longitudinal joints are constructed, drill one core per sublot until a full lot is obtained as specified in Section 405.3(e). Do not include the length of excluded joints in the 12,500 feet lot. A single lot need not be contiguous and may include multiple joints throughout the project limits. Partial lots with less than three sublots will be combined with the previous lot. Partial lots with three or more sublots will stand as a separate lot.

joint eligible for evaluation, determine the effectiveness of the material placement and compaction operations as well as the mixture design on longitudinal joint density. In addition to any incentive/disincentive payment sublot cores, obtain five 6-inch diameter core samples located randomly on the longitudinal joint for QC density testing. Test the cores according to PTM No. 715 or PTM No. 716 and provide the results of the tests to the Representative within 24 hours. The Contractor may elect to make adjustments to the mixture design or placement and compaction operations to ensure adequate in place density is being achieved. If proposing changes that impact the field quality control plan or job mix formula, s ubmit any modifications or revisions to the Department for review.

Representative will not obtain samples from excluded areas to determine lot incentive/disincentive payment.

• Joints where one or both sides of the pavements forming the joint were accepted for density by means other than pavement cores.

• Joints where one side of the joint is formed by existing pavement not constructed under this contract.

• Areas within 1 foot longitudinally of an obstruction during construction of the wearing course (manholes, inlet grates, utilities, bridge structures, pavement notches, etc.)

• Small areas, such as intersections, gore areas or transitions, or anywhere the Representative determines paving and phasing methods do not allow for consistent longitudinal joint construction. Before paving, submit requests in writing to the Representative for consideration of any areas to be excluded on this basis. The Representative will make the final determination.

PTM No. 729. The Contractor may take one companion core per sublot for quality control purposes. For vertical joints center joint cores on the line where the joint between the two adjacent lifts abut at the surface. For notched wedge joints, center joint cores 6- inches or one half the joint taper width away from the joint line in the direction of the wedge . With the Representative present, drill 6-inch diameter cores as soon as possible, but no later than the day following the construction of the longitudinal joint at each sublot location.

Do not compress, bend, or distort samples during cutting, handling, transporting, and storing. If samples are damaged, immediately obtain replacement samples, as directed by the Representative, from within 12 inches of the original sample location. Within 24 hours after coring, backfill the hole(s) with mixture of the same JMF or with mixture used for subsequent courses and compact and seal the mixture. Identify the samples by longitudinal joint lot and sublot number, location, dates of placement, mixture type, and as acceptance samples (Sample Class AS). Provide the daily theoretical maximum specific gravity value as specified in Section 413.2(e)1.d.4 for the mix on each side of the longitudinal joint. The average of the two values will be used for the density calculation of each sublot according to PTM No. 729. Immediately package and deliver the samples to the Representative according to the QC Plan. Use sample containers of sufficient strength to prevent samples from being damaged during transport. Each joint core will be comprised of portions of two lanes, with the potential for two different JMFs within each core. The Representative will submit separate samples and Forms TR -447 for sublots after work stoppages of more than 5 days. The LTS will test the density samples according to PTM No. 715, and if necessary PTM No. 716, to determine the percent compaction.

will compute the PW L and average in place density for each lot as specified in Section 106.03(a)3.a and as follows. The lower specification limit (L) will be 91.0 %. No upper specification limit (U) for density will be factored into the PWL determination.

405.4MEASUREMENT AND PAYMENT—Dollar

The proposal will include an item and a predetermined amount of money for Evaluation of Asphalt Pavement Longitudinal Joint Density and Payment of Incentive/Disincentive. The Contract item will have a unit of measure of DOLLAR, a unit price of $1.00, and a quantity equal to the predetermined amount. When asphalt pavement longitudinal joint density evaluation indicates that a disincentive adjustment is applicable, the appropriate amount will be deducted from money due or to become due to the Contractor t hrough the processing of a contract adjustment. Due to the incentive or bonus status of the payment being made the provisions of Section 110.02(d) are not applicable to this item. Measured and paid for, under the Evaluation of Asphalt Pavement Longitudinal Joints and Payment of Incentive item as follows: For each lot Table A will be used to determine the incentive/disincentive payment for longitudinal joint density. The incentive/disincentive payment for a lot containing other than 5 sublots will be determined as a percentage of a full 12,500 feet lot, by the following:

N=3 (60% of the Table A amount) N=4 (80% of the Table A amount) N=6 (120% of the Table A amount) N=7 (140% of the Table A amount)

For a full lot with a PWL ≥ 81, the Contractor will receive a prorated positive incentive payment up to a maximum of $7,500 calculated according to Table A. For a full lot with a PWL ≤ 49, the Contractor will receive a prorated negative adjustment (disincentive) up to a maximum of $12,500 for the longitudinal joint lot calculated according to Table A. Lots with PWL ≤ 49 and average density ≥ 90.0 % will be assessed a disincentive up to a maximum of $1,000 per sublot regardless of PWL. Costs associated with providing joint pavement cores will not be paid for separately and will be considered incidental to the construction items for the wearing courses eligible for the longitudinal joint evaluation.

TABLE A Lot by Lot Payment Schedule for Longitudinal Joint Incentive/Disincentive Lot PWL Amount PWL ≥ 81

(PWL -80)/20 x $7,500 (Incentive) PWL = 50 to 80 $0 PWL ≤ 49

(50-PWL)/50 x -$12,500 (Disincentive)