2013-02-20_REPORT - M1980244

• Permit No: M1980244
• IBM Index Class Name: REPORT
• Doc Date: 2/20/2013
• Doc Name: Response to Concrete Spec. and CDOT Inquiry.
• From: CC&V
• To: DRMS
• Email Name: TC1
• Media Type: D
• Archive: No

Hot Mix Asphalt
Element
V Factor
W Factor
2.36 mm (No. 8) mesh and larger sieves
600 pm (No. 30) mesh sieve
75 pm (No. 200) mesh sieve
Gradation
Asphalt Content
In -place Density
Joint Density
2.80
1.80
0.80
N/A
0.20
1.10
1.60
N/A
N/A
N/A
15
25
45
15
CC &V PROJECT NO. SC -07 -002
3
REVISION OF SECTIONS 105 AND 106
CONFORMITY TO THE CONTRACT OF HOT MIX ASPHALT
(LESS THAN 5000 TONS)
Regardless of QL, the maximum PF in relation to Pn is limited in accordance with Table 105 -3.
February 3, 2011
As test results become available, they will be used to calculate accumulated QL and PF numbers for each
process. The process I /DP's will then be calculated and accumulated for each element and for the item. The
test results and the accumulated calculations will be made available to the Contractor upon request.
Numbers from the calculations will be carried to significant figures and rounded according to AASHTO
Standard Recommended Practice R -11, Rounding Method.
Evaluation of Work. When the PF of a process is 0.75 or greater, the finished quantity of work represented by
the process will be accepted at the appropriate pay factor. If the PF is less than 0.75, the Engineer may:
1. Require complete removal and replacement with specification material at the Contractor's expense;
or
2. Where the finished product is found to be capable of performing the intended purpose and the value of
the finished product is not affected, permit the Contractor to leave the material in place.
If the material is permitted to remain in place the PF for the process will not be greater than 0.75. When
condition red, as described in Section 106, exists for any element, resolution and correction will be in
accordance with Section 106. Material, which the Engineer determines is defective, may be isolated and
rejected without regard to sampling sequence or location within a process.
If removal and replacement is required because the joint density PF for a process is below 0.75, the
Contractor shall remove and replace the full lane width adjacent to and including at least 6 inches beyond the
visible joint line for the entire length of joint representing the process. If the lane removed is adjacent to
another joint, that joint shall also be removed to a point 6 inches beyond the visible joint line. When a single
joint density core is more than 2V outside the tolerance limits, the removal and replacement limits shall be
identified by coring the failing joint at 25 foot intervals until two successive cores are found to be 1V or less
below the minimum tolerance limit. If removal and replacement is required, the Contractor shall submit
documentation identifying the process to be used to correct the area in question in writing. The process will
be approved by the Engineer before commencing the corrective work.
Table 105 -2
"W" AND "V" FACTORS FOR VARIOUS ELEMENTS