HomeMy WebLinkAbout07F Approve 2022 Standard Specifications and 2022 Standard Detail Plates
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Nuclear Gauge Correlation
(Instructions on back)
ProjectContractorDate
Project No.PlantVerification Company
OwnerQC TesterVerification Tester
Core Density Results
Correlation Test #1 2 3
A. Weight in Air
B. S.S.D Weight
C. Weight in Water
D. Volume (B-C)
E. Core Density
((B/D)x62.24)
Nuclear Density ReadingsGauge Serial No.Standard Count
F. Density 1
G. Density 2
H. Ave. Nuclear
R
Density
E
N
I. Individual
W
Correction Factor (E-
O
H),Show+/-
Correction Factor to be applied to Nuclear Density Readings
Nuclear Density ReadingsGauge Serial No.Standard Count
F. Density1
G. Density2
H. Ave. Nuclear
Density
I. Individual
Correction Factor (E-
H),Show+/-
Correction Factor to be applied to Nuclear Density Readings
Nuclear Density ReadingsGauge Serial No.Standard Count
F. Density1
G. Density2
H. Ave. Nuclear
Density
I. Individual
Correction Factor (E-
H),Show+/-
R
O
T
Correction Factor to be applied to Nuclear Density Readings
C
A
R
T
Nuclear Density ReadingsGauge Serial No.Standard Count
N
O
F. Density1
C
G. Density2
H. Ave. Nuclear
Density
I. Individual
Correction Factor (E-
H),Show+/-
Correction Factor to be applied to Nuclear Density Readings
Nuclear Gauge Correlation
Instructions:
1. Engineer to locate and identify a minimum of three correlation test locations. (Engineer)
2. Complete daily standard count prior to starting test. (Contractor, Owner)
3. For each gauge to be used on project (minimum of two QC and two Verification) perform two density tests at
each correlation test location. Each test shall be for a duration of 4 minutes. The second test shall be taken with
the gauge rotated 90 degrees from the first test. Record results in chart (F & G). (Contractor, Owner)
4. Calculate the Average Nuclear Density (H) for each test location. (Contractor, Owner)
5. Obtain a Correlation Core at each correlation test location. (Owner)
6. Determine the core bulk specific gravity for each Correlation Core per MnDOT Laboratory Test Method 1810
(A-E). (Owner)
7. Calculate the Individual Correction Factor (I) for each correlation test location. (Engineer)
8. Calculate the Correction Factor (Average of I for all locations) to be applied to each nuclear gauge. (Engineer)
Sketch location of tests below
Reference Site Summary
(Instructions on back)
ProjectContractorDate
Project No.PlantVerification Company
OwnerQC TesterVerification Tester
Bulk Density Readings
Gauge Serial No.
QC/Verification
Density 1A
Density 1B
Density 2A
Density 2B
Density 3A
Density 3B
Density 4A
Density 4B
Density 5A
Density 5B
Gauge Reference
Value (Average)
Daily Check
Gauge Serial No.Gauge Serial No.
Date
Reference Site Summary Instructions
Instructions:
1. Engineer to locate and identify a Reference Site. (Engineer)
2. Complete daily standard count prior to starting test. (Contractor, Owner)
3. For each gauge to be used on project (minimum of two QC and two Verification) perform five density tests at
Reference Site. Each test shall be for a duration of 4 minutes and consist of two gauge readings.
The second test shall be taken with the gauge rotated 90 degrees from the first test. (Contractor, Owner)
4. Calculate the average for each gauge to establish a reference value. Use the established reference value as a
control to monitor the calibration of the gauge during the duration of the project. (Contractor, Owner)
5. A minimum of once per day, on every day of paving operations, perform one test at the Reference Site.
Record test result on Reference Site Daily Check. (Contractor, Owner)
6. Compare daily test results for each gauge to the gauges Reference Value. If the daily result is within 1lb/cf
of the Reference Value for that gauge proceed with project testing. If the daily result is not within 1lb/cf, investigate
the cause of the difference. Conduct 5 additional tests at the reference site once the cause of deviation is
corrected. Calculate and record the average of the 5 additional tests on the Daily Check Reference Record. If
the average of five tests is within 1 lb/cf proceed with project testing. If the average of five tests is not within 1lb/cf
remove the gauge from the project and use different gauge. (Contractor, Owner)
Sketch location of tests below
Daily Check Reference Record
ProjectQC/V Company
Project No.QC/ V Tester
OwnerGauge Serial #
Reference Site Value for Gauge No.
Check 2
DateCheck 1Check 3Check 4Check 5Average