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SB Certification for Mixture-Based Specification for Flexible Base

SB Certification for Mixture-Based Specification for Flexible Base. Summary of Spec Test Procedures Actions to Take for Non-Compliance October 31, 2012. Purpose of ABQMS. Establish List of Qualified Producers Producers Responsible for Process Control/Quality Control

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SB Certification for Mixture-Based Specification for Flexible Base

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  1. SB Certification for Mixture-Based Specification for Flexible Base Summary of Spec Test Procedures Actions to Take for Non-Compliance October 31, 2012

  2. Purpose of ABQMS Establish List of Qualified Producers Producers Responsible for Process Control/Quality Control Reduce TxDOT Sampling and Testing Expedite Aggregate Base Acceptance Share Responsibility (Producer/TxDOT) for Quality and Uniformity Reduce Cost and Time for Process Control, QC/QA Sampling and Testing and Acceptance Reduce Risk to Producer and TxDOT Other

  3. Process Full Approval Producer Application for ABQMS TxDOT Review of Application Approve Conditional Approval Reject with Request for Additional Information Reject

  4. Aggregate Type A – Crushed Stone B – Crushed/Uncrushed Gravel C – Crushed Gravel D – Crushed Stone/Crushed Concrete E – As Shown on Plans Grade Grades 1 to 5 (Table 1) Test methods, responsibilities, and minimum classification levels on Handout

  5. TxDOT Verification Tests*

  6. Operational TolerancesAllowable Material Property (Production) Differences and Specification Limits

  7. Operational TolerancesAllowable Material Property (Production) Differences and Specification Limits, (Cont’d)

  8. Operational TolerancesAllowable Material Property (Production) Differences and Specification Limits, (Cont’d)

  9. Placement Acceptance • Lot Size • 4 Sublots per Lot • Area Placed by 4,000 Tons • Pay Factor for Lot 1-1.00 • Rework or Remove and Replace Any Sublot in Lot 1 with Relative In-place Density Less than 98%

  10. Placement Sampling Random Sampling (Engineer)

  11. Placement TestingPlacement Testing Frequency, Allowable Differences and Specification Limits)

  12. Operational Tolerance/Suspend Placement

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