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Specifications

TxDOT Request for Industry Comments

Send comments to Chuck Fuller or Corey Schwarz by close of business January 15, 2021

The following test procedures and Department Material Specifications (DMS), attached for your review, have been recommended by the Texas Department of Transportation and await industry comments.

Tex-630-J “Determination of Recycled Engine Oil Bottoms, Polyphosphoric Acid, and Ground Tire Rubber Content in Asphalt Binders Using X-Ray Florescence Spectroscopy,” (Spec Committee No. Tex-202012-8)
  • This is a new test procedure for XRF “Determination of Recycled Engine Oil Bottoms, Polyphosphoric Acid, and Ground Tire Rubber Content in Asphalt Binders Using X-Ray Fluorescence Spectroscopy.”
DMS-6310 “Joint Sealants and Fillers,” (Spec Committee No. DMS-6310-202012-9)

The primary revisions to the test procedure are:
  • revise the specification to reflect ASTM standard specification,
  • added full section on MPL Qualification Procedure, and
  • removed Class 9 and 10 (both are emulsion materials tested in Item 300 and not part of the MPL).
Tex-538-C “Quality Monitoring for Rubber Asphalt Crack Sealers and Related Materials,” (Spec Committee No. Tex-538-C-202012-10)

The primary revisions to the test procedure are:
  • removed Joint Sealants from the procedure (moved to DMS 6310) and
  • updated MPL Qualification procedure to allow for submitting material testing laboratory reports.
Tex-540-C “Measurement of Polymer Separation on Heating in Modified Asphalt Systems,” (Spec Committee No. Tex-540-C202012-11)

The primary revisions for this test procedure are:
  • updated the procedure to clarify several issues related to oven temperature and clarify what passing and failing results are,
  • Section 1.1. added phase separation to the definition,
  • Section 3.1. & 3.4 specify maximum oven temperature,
  • Section 3.2. added “Thoroughly stir the asphalt binder and make sure that it fully melted and homogenized,”
  • Note 2 was added “Note 2— Avoid overfilling the test container; the can should be roughly filled up to 5-mm from the top edge,”
  • Section 3.5. changed the duration to 5 hr. (or 48 hr.),
  • Section 3.6., 3.7. and 3.11. added details on how to perform the procedure,
  • Note 3 added “Note 3- Engineer can wave this requirement if there is no significant difference between the mechanical properties of the top and bottom of the sample, following Sections 3.9-3.14,
  • Note 4 added “Note 4- The sampling should be done at least 5-mm away from the wall of the container and in a depth no more than 3-mm from the top or bottom surface, and
  • Section 3.13 and 3.14. clarified how to calculate the results and what is considered failing/passing.

Notice of Special Provision Approved for Statewide Use

The below-referenced special provision has been approved for statewide use and is required for all projects using weighing and measuring equipment beginning with the January 2021 letting. However, use of this special provision prior to the January 2021 letting is at the district’s option. This special provision modifies Article 520.2., “Equipment,” to allow e-ticketing. It also replaces SP 520-001.

If you have any questions, please contact Chuck Fuller or Corey Schwarz.

EXPEDITED Request for TXAPA Comments
Send comments to Chuck Fuller or Corey Schwarz by September 11, 2020

Notice of Special Provision Approved for Statewide Use
This special provision has been approved for statewide use and is optional for all projects using cleaning and sealing joints beginning with the December 2020 letting.

​The special provision replaces SP 438-001 and adds the allowance of the use of foam-type joint seal for Item 438.

If you have any questions, contact Chuck Fuller or Corey Schwarz

Notice of Special Provision Approved for Statewide Use
This special provision has been approved for statewide use and is required for all projects using asphalts, oils, and emulsions beginning with the December 2020 letting. However, use of this special provision prior to the December 2020 letting is at the district's option.

​The special provision modifies the following; the use of REOB is prohibited, removal of CRS-1P from Table 1 and added Tables 3A and 10A for TRAIL materials. This special provision also replaces SP 300-016.

If you have any questions, contact Chuck Fuller or Corey Schwarz 

DEADLINE APPROACHING Request for TXAPA comments
Send comments to Chuck Fuller or Corey Schwarz by September 4, 2020. 

 IMPORTANT: We received word from TxDOT that the documents we previously distributed were sent to us in error. Please review these updated documents and provide your comments by the deadline of September 4, 2020. 

The documents below were distributed previously and were the correct documents. With regards to your comments, these documents are accurate. 

TxDOT Response to TXAPA Comments

DEADLINE APPROACHING Request for TXAPA comments
Send comments to Chuck Fuller or Corey Schwarz by September 4, 2020. 

EXPEDITED Request for TXAPA Comments
Send comments to Chuck Fuller or Corey Schwarz by June 30, 2020

Request for TXAPA Comments
Send comments to Chuck Fuller or Corey Schwarz by May 1, 2020

​SP004-004 - "Scope of Work (Materials Contract Only)" SPEC 520-001 - "Weighing and Measuring Equipment"

Request for TXAPA comments: Special Provision to Item 300 Asphalts, Oils, and Emulsions
Send comments to Chuck Fuller or Corey Schwarz by March 6, 2020
UPDATE To Change Memo (De-34-19), SS 3076 - "Dense Grade Hot Mix" (Spec Committee No: 3XXX-20192-18)
UPDATE To Change Memo (De-35-19), SS 3077 - "Superpave Mixtures" (Spec Committee No. 3XXX-20192-19
Change Memo (De-33-19), SS 3085 - "Underseal Course" (Spec Committee No. 3XXX-20189-2)
Change Memo (De-32-19), SS 3084 - "Bonding Course" (Spec Committee No. 3XXX-20189-1)
 


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