Appendix 3-2 |
January 29, 2016 |
|||
|
||||
PCC Paving Verification Responsibilities |
||||
Duty |
Task |
Performed
By/ |
Minimum Frequency |
|
1. Sample and test aggregate gradations (Fine, Coarse, and Intermediate) |
•Obtain independent
sample per Materials IM 301. |
Construction |
Sample 1/day |
|
2. Verify aggregate quality. |
•Obtain independent sample and submit to Central Materials (Coarse and Intermediate). |
Sampling - District Materials AGG II |
1/100,000 square yards |
|
Testing - Office of Materials |
||||
3. Verify cementitious. |
•Obtain independent sample and submit to Central Materials (Portland Cement, Fly Ash, and Ground Granulated Blast Furnace Slag). |
Sampling - District
Materials |
1/100,000 square yards |
|
Testing - Office of Materials |
||||
4. Verify admixtures. |
•Obtain independent samples and submit to Central Materials. |
Sampling - District
Materials |
1/producers lot |
|
Testing - Office of Materials |
||||
5. Verify air, Plastic |
•Sample per Materials
IM 327. |
Construction |
1/700 cubic yards - Central Batch |
|
1/100 cubic yards - Ready Mix |
||||
6. Slump, Hand Finish or Std. Fixed Form Only |
•Sample per Materials
IM 327. |
Construction |
1/700 cubic yards - Min. 1/pour |
|
7. Verify reinforcement. |
•Obtain independent samples and submit to Central Materials. |
Sampling - District
Materials |
Varies - Check IM 204 |
|
Testing - Central Materials |
||||
8. Verify thickness |
•Obtain core locations
from District Materials |
Construction |
1/2000 square yards |
|
9. Verify smoothness. |
•Randomly select
segments and measure smoothness per Materials IM 341. |
District Materials |
10% of project |
|
PCC Paving Independent Assurance Responsibilities |
||||
Duty |
|
|
Minimum Frequency |
|
Task |
Performed
By/ |
Central Batch |
Ready Mix |
|
1. Sample and test aggregate gradations (Fine and Coarse) |
•Sample and test per
Materials IM 204. |
District Materials |
*1/100,000 square yards |
*1/100,000 square yards |
2. Entrained Air, Plastic |
•Sample and test per
Materials IM 204. |
District Materials |
*1/100,000 square yards |
*1/100,000 square yards |
3. Test thickness cores |
•Sample and test per
Materials IM 204. |
District Materials |
10% of project cores |
10% of project cores |
4. Calibrate smoothness testing equipment |
•Per Materials IM 341. |
Office of Materials |
Yearly |
Yearly |
* Systems Approach Applicable |
Other Required PCC Paving Acceptance Process Responsibilities |
||||
Duty |
Task |
Performed
By/ |
Minimum Frequency |
|
1. Inspect stockpiles |
•Observe stockpiling
procedures. |
Construction |
Observe during startup and during visits |
|
2. Concrete Grade Yield |
•Compare quantity required to quantity batched and placed. |
Construction |
Weekly |
|
3. Flexural Strength (beams) Curing and Testing |
•Cast and cure per
Materials IM 328. |
Construction |
Observe each occurrence |
|
4. Maturity Curve Development and Validation |
•Observe maturity
curve development per Materials IM 383. |
Construction/PCC I |
When available |
|
5. Field Maturity Testing |
•Observe placement of
maturity probes per Materials IM 383. |
Construction |
If using thermal meter, observe a temperature reading after first day and weekly thereafter |
|
6. Test Equipment |
•Inspect test equipment to ensure in good working order and lab has been qualified. |
Construction |
During startup and |
|
7. Audit Checks and Test results in Plant Book |
•Check for proper
completion of Daily Plant Checklist and Plant Site Inspection List. |
Construction |
Weekly |
|
8. Material certifications |
Check certifications
for: |
Construction |
During visits |
|
9. Observe aggregate moisture and specific gravitity testing |
•Observe CPI perform test in accordance with Materials IM 307 and IM 308. |
Construction |
Central Batch - Once during first week of production |
|
10. Plant proportion control |
•Observe delivery
tolerance. |
Construction |
Central Batch - Once during first week of production |
|
11. Observe mix times and number of revolutions |
•Per Article 2001.21. |
Construction |
Central Batch - During visits |
|
12. Audit Daily Diary |
•Review for proper recording of events. |
Construction |
During visits |
|
13. Plant Reports |
•Check for proper
project and mix identification. |
Construction |
Daily/Weekly |
|
14. Inspect Transit Mixers |
•Inspect for buildup
in drum per Article 2001.21 B. |
Construction |
1/Month |
|
15. Monitor agitors & dump trucks for properly cleaned dump box |
•Check for properly cleaned dump box |
Construction |
Daily |
|
16. Inspect plant facility |
•Observe plant
calibration to assure compliance with Materials IM 527. |
District Materials |
Central Batch - Startup |