Item 403 ASPHALT CONCRETE QUALITY CONTROL AND ACCEPTANCE
403.01
Description
403.02 General
403.03 Quality
Control Program (QCP)
403.04 Plant
Calibration
403.05 Quality
Control Tests
403.06
Verification Acceptance (VA)
403.07 Unconditional
Acceptance
403.08
Acceptance Tables for 448 Mixes
403.01 Description. This specification
outlines the Contractor requirements for controlling asphalt concrete, asphalt
concrete base, or other asphalt mixtures as specified.
403.02 General. The Department will verify
quality control by Department Verification Acceptance (VA) tests and monitoring
reviews as specified. If the Contractor fails to operate according to its
Quality Control Program (QCP), the Department will
accept asphalt mixtures by Unconditional Acceptance.
Restoration
of VA procedures will be by the Department’s Quality Control Qualification
Committee (QCQC) based on District recommendation and
review of the Contractor problems, resolutions and QCP.
Acceptance
does not relieve the Contractor of responsibility for supplying and installing
a finished product conforming to all requirements of the Contract.
403.03 Quality Control Program (QCP). Create
and implement a Quality Control Program (QCP) for
each paving season. The QCP will cover
processes conducted to provide an asphalt mixture at the paving site that is
uniform in composition, conforms to the specification requirements and that
when placed is free of any defect (ex. segregation, lack of mixture and texture
uniformity, raveling, rutting, holes, debris etc.) within the
Contractor’s control at project completion. A minimum of 3 weeks before
mix production, but no later than February 28, submit a hard copy of the
proposed QCP to the Laboratory for review and
approval.
Send
a hard copy and a digital copy (if available) of the approval letter and
approved QCP to the DET in
every District in which work is performed. Keep copies of the approval
letter and the approved QCP in each Contractor plant
laboratory and plant operation control room. Digital copies of the
approved QCP and approval letter in pdf format are allowed in each Contractor plant laboratory
and plant operation control room with the following requirements: The
file icon must be appropriately labeled and be on the computer desktop of a
computer in each area, the QCP must contain a Table
Of Contents inside the front cover locating all sections by page number and the
QCP must be page numbered, and out of date QCPs must be removed from the computer desktop.
Failure
to comply with the approved QCP may result in removal
of personnel in accordance with Supplement
1041,
removal from VA, and adversely affect the Contractor’s Prequalification rating.
The
QCP is a reflection of a Contractor’s sincerity and
ability in producing a quality product. Development of this program
beyond the minimum requirements specified below is encouraged and is taken into
consideration by the QCQC when reviewing Contractor
plant operation for qualification for VA.
Include
in the program:
A.
The assignment of quality control responsibilities. Quality control includes
all efforts required to achieve a product meeting specifications. The QCP will list individuals as required below and note their
designated responsibilities to meet QCP
requirements. Provide a Quality Control Manager holding a Supplement
1041 Level 3 approval and who is a company employee. Assign Level 2
technicians for all Level 2 QC testing duties, and provide a list designating
their responsibilities and expected actions. If
Level 2 consultant technicians are used provide a document in the QCP and to them listing designated responsibilities and
expected actions (if different from employee expectations). Define in the
QCP who is responsible at plants and specific methods
for assuring haul vehicles meet all requirements and proper bed release
products are used. Provide a Field Quality Control Supervisor, holding Supplement
1041 Field Quality Control Supervisor approval and who is a company
employee, who is routinely and usually at the paving site during placement of
any non-temporary asphalt concrete pavement.
B.
Provisions to meet the Department mix specifications.
C.
Procedures for extra testing (e.g., job start, responses to poor test results
or field mix problems, aggregate stock testing, reclaimed asphalt concrete
pavement checks, moistures) and any other testing necessary to control
materials not already defined in these Specifications.
D.
Methods to maintain all worksheets, including all handwritten records, and
other test records for the duration of the contract or 5 years, whichever is
longer. Define the test record process. Define company records
retention requirements. Provide copies of all test reports and forms used
in the quality control process.
E.
Procedures for equipment calibration and documentation for Level 2 lab
equipment. Provide documentation that all Level 2 lab equipment has been
calibrated at the time of the Level 2 lab approval inspection. Procedures
for calibration record storage.
F.
Method of Quick Calibration and documentation for each plant type.
G.
Procedure for random sampling to be used and documentation method.
H.
All procedures to meet the processing, testing and documentation requirements
for RAP and RAS in 401.04 including test forms,
record keeping, technician responsibilities, etc.
I.
Procedure for ensuring that every Contractor employee involved in the testing
of asphalt mix and operation of the asphalt plant facility has read the QCP and has on site access to all applicable Department
specifications, proposals, policies, and the current approved JMF.
J.
Means to meet the handling and storage requirements of 402.03 and asphalt binder suppliers for all asphalt
binders.
K.
Means to meet delivered mixture uniformity/coating and hauling/trucking
requirements.
L.
Define the roles and responsibilities of the Field Quality Control
Supervisors. List approved Field Quality Control Supervisors.
M.
Signature of the Quality Assurance Manager and, if different, the person in
authority to enforce all operations covered by the QCP
as outlined in this subsection.
N.
Specify in the QCP warning bands to be used by
technicians for all tests and give specific instruction how they will be used
for tests in concert with Table 441.10-1
specification requirements.
403.04
Plant Calibration. Conform to the requirements of Item 402.
Before
manufacturing asphalt concrete, demonstrate to the Monitoring Team that the
Contractor’s facility adequately meets the specification requirements.
Calibrate the plant using procedures approved by the Department. Perform
initial calibrations in the presence of the Monitoring Team. The
Monitoring Team may request a letter of certification and certified data
documenting the calibration results, instead of having the Monitoring Team
present.
Verify
the calibrations biweekly using a Quick Calibration. However, the
Department may request additional Quick Calibrations if there are mix
production problems or plant operation concerns. The Quick Calibration is
a quality control procedure developed by the Contractor that verifies the
accuracy of a facility to proportion materials to meet the current JMF. Include the Quick Calibration procedure and data
forms in the QCP. If the difference between
current calibration and the Quick Calibration is within ±2 percent, then the
current calibration is acceptable. If the 2 percent variation is
exceeded, perform a recalibration of the facility. Document the Quick
Calibration procedure as specified in the QCP and
post the procedure and results in plain view in the plant control room and
plant laboratory for reference by the Monitoring Team. Document all data
from calibrations in a format approved by the Laboratory, and retain the data
for review by the Monitoring Team.
If
asphalt concrete is being produced from a batch type facility, verify the
accuracy of the aggregate and asphalt binder weighing devices on a biweekly
basis. Include the verification procedure in the QCP.
Document the verification procedure as specified in the QCP
and post the procedure and results in plain view in the plant control room and
plant laboratory for reference by the Monitoring Team. Do not allow the
deviation between the plant recorded weights and
actual weights to exceed 1 percent. Record all data from verification of
weighing devices in a format approved by the Laboratory, and retain the data
for review by the Monitoring Team.
403.05 Quality Control Tests. Perform
quality control tests to control the asphalt concrete mix within the
appropriate specifications.
Perform
all Item 448 mix testing and quality control according to
441.09. The Contractor may test a 448 Sublot sample instead of the
required quality control test provided the sample is tested in the half day in
which the Sublot sample mix was produced and is
tested for all required quality control properties.
For
mixes that do not use Item 448 acceptance
(e.g. Items 301, 302,
and Supplemental
Specification 803), test the mix according to 441.09
for asphalt binder content and gradation (Basic). Other requirements of 441.09 and 441.10 do
not apply. Control the Basic mixes as follows:
A.
If a single asphalt binder content is more than ±0.5
percent beyond the JMF, immediately take and test an
additional sample.
B.
If two consecutive asphalt binder content tests are more than ± 0.5 percent
beyond the JMF, notify the Monitoring Team and cease
production until the problem is corrected.
C.
If the Range difference in any three consecutive asphalt binder content tests
is greater than 0.7 percent (for 302 mix) or 0.6 percent (Basic mix, other than 302) immediately notify the Monitoring Team.
D.
If the Range difference in any three consecutive gradation tests for the No. 4
(4.75 mm) sieve is greater than 10.0 percent, immediately notify the Monitoring
Team.
E.
If Range deviations as specified continue, cease production.
Range
is defined as the difference between the largest and the smallest test result.
403.06
Verification Acceptance (VA). The Department will
perform VA. If the random Department sampling and testing verifies the
accompanying Contractor tests, the average of the Contractor’s quality control
tests for each day or night (for Basic mix), the average of the Contractor’s
tests for each Lot (for 448 mix) or daily average MSG (446 mix)
will be used to determine acceptance.
A. Sampling. The
Department will perform the VA by testing independent and split samples taken
and tested by the Department.
For plant sampling
for Basic mixes or 441 quality control testing, the Contractor’s technician will
randomly select the truck in which to take a sample by using a random number
procedure as outlined in the QCP. The
Contractor’s technician will give no indication to anyone of the time that the
sample is to be taken. For other than job start, previous mix production
problems, low production tonnage, or as requested by the Monitoring Team,
exclude the first three trucks from sampling. Include the random number
and sample tonnage location and time of taking on the daily Quality Control
Report (Department Form TE-199)
with each test. Tests, other than the required random sample tests, are
at the Contractor’s discretion according to the QCP.
Provide a clean area
of sufficient size and a hard surface to perform sample splitting. Split
samples by quartering and recombining only as described in AASHTO T 248, Method B for hard surfaces for the
Department and Contractor’s sample. The Department split sample size
required is generally 22 to 27 pounds (10,000 to 12,000 g). A mechanical
quartering device approved by the Laboratory may be used in lieu of the above
but only split according to the procedure outlined in the Contractor QCP. Ensure that every quality control or Item 448 Sublot sample taken by the
technician has a labeled split for the Department. Wrap and label the
Department split samples as to Lot or Sublot, time,
location (tonnage), and accompanying Contractor test identification. The
Monitoring Team will pick up all Department split samples within 4
workdays. Sample mishandling (careless identification, changing sample
size, consistency, or pre-testing) will result in a change to Unconditional
Acceptance.
For Item 448 mixes, conform to the procedures of Supplements 1035,
1038,
1039,
and 1043
except take samples from a truck at the plant. If workmanship
problems continue on the project (segregation, etc.) or if quality control
problems persist, the Monitoring Team may require sampling on the road
according to Supplement 1035.
Lots will be 3000 tons (3000 metric tons), and Sublots
will be 750 tons (750 metric tons). However, when production is limited
to less than 3000 tons (3000 metric tons), consider the quantity produced as a
partial Lot. For partial Lots of 1500 tons or less sample and test at
least two sublot samples regardless of the tons
produced. Split and test all Sublot sample locations,
as selected by the Monitoring Team or project and taken by the
Contractor. The Contractor may test a QC sample at the required Sublot sample location as
both a QC and Sublot test provided the sample is
tested for all required quality control properties. Test results will apply for
both QC and sublot requirements. A change in
the location of the Sublot sample must be approved by
the District and be reasonably close to the original location. This
allowance does not apply to any other samples including Department VA sample
locations selected by the Monitor. Label Department split samples as Sublot or quality control samples.
For Item 446 mixes MSG VA testing will be performed by the District
on a minimum of one in every four required District sampled Daily samples.
B. Reporting. Report all testing performed and sample
identification on a Quality Control Report (Department Form TE-199).
Record on the TE-199
if the mixture produced was ran at the asphalt plant as a hot
mix asphalt (HMA) or as a warm mix asphalt (WMA)
produced according to 402.04 or another approved
method. Deliver (fax, e-mail, hand) completed Quality Control Reports by the
end of each day in which testing is conducted. If desired by the
Monitoring Team and always for unsigned E-mail versions, mail the
originals. After startup adjustments, report any plant operation changes
on the Quality Control Report. Ensure that each Quality Control Report
contains technician comments as to production quality, input materials
received, and condition and includes any other quality control activities as
specified in the QCP. Ongoing problems with
inadequate, incomplete, or illegible reporting will result in a change to
Unconditional Acceptance. The Contractor’s technician must sign each
Quality Control Report.
Report test results
to the accuracy of the following decimal places. When
the figures to be dropped in rounding off are exactly one-half of unity in the
decimal place to be retained, round the value up to the nearest number in the
decimal place to be retained.
|
Single Test |
Average |
Asphalt Binder Content |
0.1 |
0.01 |
No. 200 (75 µm) sieve |
0.1 |
0.01 |
Other sieves |
Whole number |
0.1 |
BSG |
0.001 |
0.001 |
For Item 448 mixes,
track the Item 448 Sublot and
Lot tonnages through the project and identify on the Quality Control Report
each random Sublot test as to Lot number and Sublot tonnage location. In addition to the Quality
Control Report submit the TE-448
Department form with lot identification and actual sieve weights for each Sublot sample from the technician’s gradation
worksheets. Attach computerized plant printouts representing samples
tested to that day’s report, if desired by the Monitoring Team, or otherwise
keep it with the quality control records. Ensure that the technician
notes on the accompanying printout in which tonnage the quality control sample
was taken with accompanying test results for AC content and percent passing the
No. 4 (4.75 mm) sieve. Keep remaining printouts in the plant laboratory
for the duration of the project. Keep a copy of all quality control
reports for a project in the Contractor’s plant laboratory.
C. Department Verification Testing and
Monitoring. For Basic and 448 mixes the Monitor/ District will randomly choose one
Department sample in a maximum of every four production days for VA testing to
confirm Contractor testing and mix control. More frequent VA samples can
be taken when desired. The Department VA sample location will be chosen
randomly by the Monitor, including where in the truck to take the sample, if
applicable. The Contractor technician will take the sample
from the truck with the Monitor witnessing. The Monitor will keep the sample in
the Department’s possession until delivered to the District lab or testing is
complete. The Monitor will have enough sample
taken to split with the Contractor. The Monitor will split the sample in
the contractor lab. The Monitor will have the sample tested in the
District lab or as noted below. The Contractor will test his split of the VA
sample with the Monitor witnessing. The Department will use its VA test
result; the Contractor result of the split: as well as the most recent previous
contractor quality control and/or sublot test in the
comparison for the Department VA testing.
The Monitor may opt
to test the Department VA sample in the plant laboratory with the Contractor’s
permission, according to the Contractor’s safety practices, and with the
restriction of only the Contractor’s technician physically placing a sample pan
in the AC Gauge. However, if the Department tests VA samples on
contractor equipment, test a VA sample on District lab equipment a minimum of
one time in 15 production days from a given plant regardless of the number of
projects or JMFs tested in the Level 2 lab.
Record the results and testing location in the District project record.
One day may be added to the above Department sample testing frequency for each
day production is less than 500 tons (450 metric tons).
For Item 446 mixes MSG VA testing will be performed by the District
on a minimum of one in every four required District-sampled Daily
samples. This result will be compared to that days Contractor average of
MSG QC test results.
For all mixes, the
District may increase the number of VA testing samples if desired.
All Department VA
test results will be given to the Contractor by a reasonable arrangement
acceptable to both. Department VA sample testing not completed in a
timely manner is of no value in verifying quality control testing quality for
Contractor test acceptance and/or investigating problem causes. As such,
if not completed in a timely manner, Contractor tests will automatically stand
and the District will note the problem in the District’s VA record.
Table
403.06-1 DEPARTMENT VERIFICATION ACCEPTANCE AND
QUALITY CONTROL TEST COMPARISON
|
Percent Asphalt Binder |
Percent Passing No. 4 (4.75mm) |
MSG Comparison |
||
|
VA [1] |
QC/lot test [2] |
VA [1] |
QC/lot test [2] |
VA [3] |
Basic |
±0.3 |
±0.4 |
±4.0 |
±5.0 |
|
±0.3 |
±0.3 |
±4.0 |
±4.0 |
|
|
|
|
|
|
0.025 |
[1]
District VA mix test deviation from Contractor split.
[2]
District VA mix test deviation from QC and/or lot test.
[3]
Deviation of District Daily sample MSG compared to QC MSG daily average.
If the Department VA
tests confirm Contractor testing is within the verification tolerances, but a
pattern of high or low results exist that suggests mix control is not at the JMF, then investigate with the Monitoring Team’s assistance
to correct the problem to the Monitoring Team’s satisfaction. Direct any
questions regarding interpretation of circumstances to the Laboratory.
D. Contractor Tests are Verified.
Production is acceptable if:
1.
The Monitoring Team verifies the Contractor’s QCP is
being fully followed; and
2.
The Department VA tests are within the limits specified in 403.06.C; and
3.
For Basic mixes, the remaining sieves do not exceed the limits of the
applicable specification.
Failure on the
Contractor’s part to respond and resolve Monitoring Team concerns may result in
a change to Unconditional Acceptance.
Acceptance is based
on Table 403.06-2.
Mix Type |
Acceptance Tolerances or Method |
||
|
|
Deviation from JMF [1] |
Range |
Basic Mixes |
Asphalt Binder Content |
±0.5% |
1.0 |
No. 4 (4.75 mm) sieve |
±6% |
12 |
|
Basic Mixes |
Use acceptance limits in appropriate specification |
||
448 Mixes |
Calculate pay factor according to 403.08 |
||
446 Mixes |
Calculate pay factor according to 446.05 |
||
[1] Based on the average of the day or night QC Tests |
E. Contractor Tests not Verified. If the Department VA test does not verify the
accompanying Contractor tests within the verification tolerances, then the
Monitoring Team will investigate.
If the deviation
between the District and Contractor test is greater than the limits in Table 403.06-3 immediately cease
production until resolved. If the deviation is less than the limits in
Table 403.06-3 and discrepancies continue,
perform additional tests to aid in problem solving.
Table
403.06-3 Deviation Limits
Property |
Mix |
Limits |
Asphalt Binder Content |
All |
±0.5 % |
No. 4 (4.75 mm) sieve |
All, except 302 |
±6.0% |
302 |
±7.0% |
Additional tests may include
any testing necessary to resolve the problem. If the additional testing
does not resolve the problem by one-half production day or 1000 tons (1000
metric tons), whichever occurs first, to the Monitoring Team’s satisfaction,
stop production, if not already, until problems are resolved. Contact the
Laboratory for assistance in resolving problems. If the District testing
program is confirmed by the additional tests and Monitoring Team investigation
and no reason to question the original test exists, then the original District
VA tests will stand.
After the above
investigation, one of the three following actions will occur:
1.
Mix Production Compares Well to the JMF. If the District test and investigation shows
mix is actually controlled well compared to the JMF
in spite of the Contractor test, the District does not have to test additional
samples if the Contractor testing problem is corrected.
2.
Mix Production Does Not Compare Well to the JMF. If the District tests and
investigation shows lack of Contractor mix control compared to the JMF the District will test the remaining Department split
or Daily samples for the days or Lots represented by the original tests.
The District will use the test results to calculate the acceptance. While
working with the District, immediately take steps to correct the problem
according to the QCP. Failure to achieve a
quick resolution will result in a change to Unconditional Acceptance.
3.
District Testing Problem. If
the District testing program has a problem as confirmed by the additional
testing and District review, the District will correct the problem, throw out
the original District test results and take new samples from the samples
representing the days or Lots in question for the VA tests.
F. Contractor Removal, Restoration. If repeated problems with poor comparison of
tests are not the District’s fault; or poor comparison of Contractor tests to
the JMF; or with plant operation, input materials, or
any of the other requirements of Department specifications occur in a single
project or successive projects, the District will request an opinion from the QCQC before notifying the Contractor of removal from
Department VA. The District will immediately notify the Contractor of the
removal with a follow up letter from the District Engineer of Tests. Once
notified, acceptance of asphalt mixtures is by Unconditional Acceptance.
Restoration of the VA procedures may occur on a future project with a District
recommendation to the QCQC based on consistent
improved plant operation and mix control, a review of the Contractor problems
and resolutions, and a review of the QCP by the QCQC.
403.07 Unconditional Acceptance. If the
Contractor is removed from Department VA, the following will occur.
The
Contractor must bring its QCP and operation to a
level acceptable to the District and QCQC before
production continues. The DET will ensure that
the project C-95 (Contractor’s Prequalification Rating survey) will reflect the
change to Unconditional Acceptance in all of the appropriate C-95
categories. The Department will accept all material for Department
projects from the facility under Unconditional Acceptance. While the
facility is under Unconditional Acceptance, acceptance of small quantities
under the small quantities policy will not apply.
Quality
control testing requirements specified in 403.05
are modified as follows:
A.
The required number of test series is a minimum of four each per production day
or night. If a production day is less than 6 hours, the Department may
reduce the frequency but not less than one test series per every 3 production
hours.
B.
For Basic mixes, if the variation from the JMF for
one test is ±8 percent passing the No. 4 (4.75 mm) sieve or ±0.3 percent
asphalt binder content, investigate and correct the problem, then resample and
test. Maintain the moving average of three tests within ±4 percent
passing the No. 4 (4.75 mm) sieve and ±0.2 percent asphalt binder content.
In addition to the Quality Control Report, maintain control charts according to
441.10 for asphalt binder content and the No. 4 (4.75 mm) sieve. If the
Range difference in any three consecutive tests is greater than 0.6 percent for
asphalt binder content or 10.0 percent passing the No. 4 (4.75 mm) sieve,
notify the Monitoring Team. If Range deviations as specified continue,
cease production.
C.
Report each day’s testing on a Quality Control Report, according to 446.04. Report all testing
performed by the Contractor’s technician on the Quality Control Report.
After startup adjustments, report any plant operation changes on the Quality
Control Report. Ensure that each Quality Control Report contains
technician comments as to production quality, input materials received, and
condition and includes any other quality control activities required in the QCP. The Contractor’s technician must sign each
Quality Control Report. Attach each day’s computerized plant printouts to
that day’s report. The technician must note on the accompanying printout
in which tonnage the quality control sample was taken with accompanying test
results for asphalt binder content and percent passing the No. 4 (4.75 mm)
sieve. Keep a copy of all Quality Control Reports for a project in the
Contractor’s plant laboratory.
The
District will monitor according to 441.06,
except notification for ceasing production does not have to be in writing. Additional samples may be obtained for
Department test at any time.
For
Basic mixes, if the average of the Lot or partial Lot acceptance tests for any
sieve other than the No. 4 (4.75 mm) sieve exceeds the specification limits,
the pay factor is determined as follows:
Table
403.07-1 Basic Mix Pay Factors
Number of Tests |
1 |
2 |
3 |
4 |
Pay Factor |
0.98 |
0.97 |
0.96 |
0.95 |
For
Item 448 mixes, the Department will perform acceptance sampling and testing
according to 403.06 and 403.08, except the Lot size will be 5000 tons (5000
metric tons) with 1250 ton (1250 metric tons). Sublots
and acceptance samples may be taken from the roadway or plant at the Districts
discretion. Department testing under Unconditional Acceptance will
receive a lower testing priority than other VA projects.
403.08 Acceptance Tables for 448 Mixes. A Lot is
considered acceptable for gradation and asphalt binder content if the deviation
of the average from the JMF and the Range is no more
than the tolerances shown in Table 403.08-1.
Table
403.08-1 Deviation from the JMF
and Range Tolerances [1]
Mix Property |
Deviation from JMF (Percent) |
Range (Percent) |
Asphalt Binder Content |
0.3 |
1.0 |
1/2 inch (12.5 mm) sieve |
6 |
15 |
No. 4 (4.75 mm) sieve |
5 |
15 |
No. 8 (2.36 mm) sieve |
4 |
15 |
[1] Based on average of four
Lot Acceptance tests. |
If
the average of the Lot acceptance tests for a particular sieve or sieves, or for
asphalt binder content deviates from the JMF by more
than the tolerances shown in Table 403.08-1,
but falls within the tolerances shown in Table 403.08-2,
then the Lot is considered reasonably acceptable and may remain in place with
payment at a reduced pay factor as show in Table 403.08-2.
If
the Range of the Lot acceptance tests for asphalt binder content or for any
particular sieve, or sieves, exceeds the tolerance shown in Table 403.08-1, the Department will apply a pay factor
of 0.95.
Table
403.08-2 448 Acceptance Schedule [1]
Mix Property |
Pay Factor |
2 Tests |
3 Tests |
4 Tests |
Asphalt Binder Content |
1.00 |
0 to 0.47 |
0 to 0.36 |
0 to 0.30 |
0.98 |
0.48 to 0.54 |
0.37 to 0.42 |
0.31 to 0.35 |
|
0.90 |
0.55 to 0.61 |
0.43 to 0.48 |
0.36 to 0.40 |
|
0.80 |
0.62 to 0.68 |
0.49 to 0.54 |
0.41 to 0.45 |
|
0.60 |
0.69 to 0.75 |
0.55 to 0.59 |
0.46 to 0.50 |
|
[2] |
>
0.75 |
>
0.59 |
>
0.50 |
|
1/2 inch (12.5 mm) sieve |
1.00 |
0 to 8.5 |
0 to 6.9 |
0 to 6.0 |
0.99 |
8.6 to 9.9 |
7.0 to 8.1 |
6.1 to 7.0 |
|
0.97 |
10.0 to 11.3 |
8.2 to 9.2 |
7.1 to 8.0 |
|
0.94 |
11.4 to 12.7 |
9.3 to 10.4 |
8.1 to 9.0 |
|
0.90 |
12.8 to 14.1 |
10.5 to 11.5 |
9.1 to 10.0 |
|
[3] |
>
14.1 |
>
11.5 |
>
10.0 |
|
No. 4 (4.75 mm) sieve |
1.00 |
0 to 7.1 |
0 to 5.8 |
0 to 5.0 |
0.99 |
7.2 to 8.5 |
5.9 to 6.9 |
5.1 to 6.0 |
|
0.97 |
8.6 to 9.9 |
7.0 to 8.1 |
6.1 to 7.0 |
|
0.94 |
10.0 to 11.3 |
8.2 to 9.2 |
7.1 to 8.0 |
|
0.90 |
11.4 to 12.7 |
9.3 to 10.4 |
8.1 to 9.0 |
|
[3] |
>
12.7 |
>
10.4 |
>
9.0 |
|
No. 8 (2.36 mm) sieve |
1.00 |
0 to 5.7 |
0 to 4.6 |
0 to 4.0 |
0.99 |
5.8 to 7.1 |
4.7 to 5.8 |
4.1 to 5.0 |
|
0.97 |
7.2 to 8.5 |
5.9 to 6.9 |
5.1 to 6.0 |
|
0.94 |
8.6 to 9.9 |
7.0 to 8.1 |
6.1 to 7.0 |
|
0.90 |
10.0 to 11.3 |
8.2 to 9.2 |
7.1 to 8.0 |
|
[3] |
> 11.3 |
> 9.2 |
> 8.0 |
|
|
[1]
Based on average of Lot Acceptance tests from the JMF.
[2]
Remove and replace material
[3]
Engineer will determine if the material may remain in place. Pay
factor for material allowed to remain in place is 0.70.
The
Department will determine payment for the Lot by multiplying the contract unit
price by the pay factor. When two or more pay factors for a specific Lot
are less than 1.00, use lowest pay factor to calculate the payment.
The Department will base
acceptance of partial Lots on the average and the Range of the results of tests
on the number of samples obtained.