5.0 Web Site Update

• Sandy Tucker from TTI discussed our needs for the web site. Her phone number is 979-845-1636; fax 979-845-0568. Her email address is s-tucker@tamu.edu. Several ideas and concerns were discussed. See below.
• Give Sandy a call or send email to her about:
  • ASR projects underway
  • State DOT contracts
  • Email list
  • Name
  • Addresses
  • List of references we want on the web
  • Update of team member roster
• Want to take a more active role in setting up the website. Sandy Tucker with TTI will take the lead.
• State DOT gatekeepers
  • Not working out as well as expected.
  • Time constraints on getting things up to date.
• Sandy will contact each member on rotating basis every two months.
• Insure that there is no semblance to support industry.
• Events okay if approved by government or industry professional groups.
• Case histories
  • Sandy will help write them up.
• Page on 25 references key for the team.
  • Margo will forward.
• Look into getting permission for full text.
• Send Sandy a contact list - new members
  • Haleem Tahir will send the list to TTI.

6.0 Team Activities

• Update on Guide Specifications
  • The specifications have been approved. 39 have responded; 37 yes, 1 abstention, and 1 no vote from Utah. We would like to review these and report back to the team. Several members will review (Steve Lane, Bryce Simons, Claudio Manissero).
  • Margo will send comments to team members.
• Resource Needs
  • Travel support
  • State DOT to send travel needs/expenses for next year.
  • Bryce to send travel expense needs.
  • Travel to ICAAR Conference to held June 11-16, 2000 in Quebec. Cost will be $600 for registration and about $900 for travel. Monies will be requested for the AASHTO team members. A total of about 15 papers have been submitted from the team members.
  • Some team members had problem with the registration fee and would like to see it put upfront so they can locally get it pre-approved.

7.0 Team Member Activity Updates

• Claudio Manissero
  • R&D with CANMET Lithium & FA
  • Building research establishment except for one chert aggregate (like Bret in Canada) it required more Li to control
  • Mitigating: Impact Echo looks good for monitoring have done three treatments so far mid October.
  • Minnesota has completed a project.
  • New Jersey has done work on piers via electrical methods.
  • Corp of Engineers at Fort Campbell are monitoring pavement. They are spraying, injecting and electrical.
  • North Carolina has a 25-lane mile pavement project.
• John Mallarky
  • ACI and FHWA have cooperative agreement almost signed. Want to sign by end of September.
  • Ruggedness test for T303 $75,000 monies will be released from the Nevada project by September 30, 1999. Margo is in charge of this. Expansions below 0.1% will be investigated for two aggregates. Eight sets in a water bath and oven with a digital as well as dial gage measurements for three labs. Seven factors in eight sets will be tested. Margo will email information on the test for a requested quick response back to her. Plus if anyone has ideas please respond to Margo.
• David Gress
  • Ruggedness C1293 testing is being done on recycled concrete. Specimens with parallel holes react faster and show significantly less variation in expansions. Samples are placed in evacuated bags with 25 ml of water. The expansions are accelerated when compared to conventional C1293 samples. Weight gains and expansions are monitored. A presentation on ASR will be given at the National PCI (Precast) Association's annual meeting.
• Margo Thompson
  • Planning T303 ruggedness testing.
  • Plans for field projects in PA on remediation.
• Moy Biswas
  • ASR research has identified 4 sources, which are restricted to cements with 0.4% alkali. All others must use no more than 0.6%. If higher alkali cement is used then mitigating admixtures must be used. HPC are being used extensively. They require fly ash in decks in whole state. If corrosion is present in substructure nitrite, silica fume and slag are required.
  • The new ACI report has a lot of ASR information in it (No. 221.1 R-98).
  • North Carolina feels they have taken control of ASR through the new specifications.
  • Research report from North Carolina State sent to all members.
  • Gave presentation in Alabama and included copy of guide specification.
  • HPC are going with prescriptive spec. Not based on increased cement content.
• Bryce Simons
  • Has performance specifications on concrete for New Mexico.
  • If ASR is an issue the following is required: min 20% class F ash or less than .1% with T303, and or take cores in 20 year old structure and show no reaction. HPC projects are underway and require high cement factors even with reduced alkali they are checking on effect of increased alkali in these rich mixes.
  • Test sections on Lithium Nitrate hard to apply with reduced humidity.
  • QA/QC being written separately from ASR specs.
  • Mixes are approved ahead of time, and then QA/QC based on batch control.
  • Initial rapid chloride permeability test initially based on 28 days, now extended to 56 days.
  • For additional costs of testing, state subsidized initial phase, but will phase out this year.
• Steve Lane
  • Use of fly ash and slag for total durability Rapid K, C1293 and C441 found that the 1293 using most reactive (.4% T303) 15% fly ash has stopped the reaction. C441 says 25%+ fly ash should be used. Rapid permeability (k) on fly ash is achieved early in lab by increasing temperature during the last 3 weeks (38 C). Combination of Silica fume and slag has worked well.
  • Lab study with Lithium is being started. They are looking at using metakaoline. Producer looking at shale. Steve will be testing this and expects good results.
  • Field study on 15 years of results is going to be surveyed for durability, k and ASR.
• Lomas Blvd.
  • Where is the data from last 3 ½ years?
  • Where is the report?
  • LTPP, who follows upon it? Marcie Simon.
  • TRB meeting on LTPP last summer. FWD stopped.
  • Have not heard back from TRB whether the funding was approved.

8.0 Potential Barriers to Transition

• Moving from specific (Lead State environment) to general (AASHTO environment).
  • The team can deal with this issue.
• A non-dedicated group taking over.
• Recommend continuing as a task group in order to get focus and expertise.
• Identify the task forces that are applicable.
• Money problem in implementation. Reliable source needs to be identified.
  • Shift of responsibility from FHWA to state DOT causes resource problem (especially if left to part-time, volunteer work). Must be able to attract and retain people capable of doing this work. Some states don't have the personnel. Can't do with a voluntary effort or part time employees.
  • Must be dealt with by AASHTO and the team.
• Perceived lack of need. Need for continuing education at state and local levels. Fragmentation and turnover within state agencies leads to pockets of educated people, and others who know nothing about ASR.
  • Must be dealt with by AASHTO and the team.
• Money Issues.
  • Recommend tech sections be more active in seeking SPR funds to support activities through a host.
  • Look at ways to combine private and public funding to raise support.
  • Look at ways for team to get paid for providing advice. Cooperative agreements with private industry.

9.0 Transition Plan Outline/Timeline

• Past
  • Directory of network, etc. (key players/organizations) - Moy Biswas; to be done by 2/2000.
  • Team accomplishments (successes) (market penetration) to be done by Bryce by 3/2000.
  • Implementation status in own state by each DOT members by 3/2000.
  • Success stories (case histories) - Margo by 4/2000.
  • Lessons learned/challenges - Steve Lane by 3/2000.
  • Communications/Web Site and documents issued Dan J. by 4/2000.
  • Objectives done - Margo is the keeper.
  • Mission done.
• Present
  • Review goals - feedback to Margo from team by 11/99; done by 1/2000.
  • Conduct survey and compare to 1st telephone survey by AASHTO Region by 4 people.
  • Network directory by team by 11/15/99; final by 3/00.
  • Documents summary (Specs, manual etc.) - Roger by 11/15/99.
  • Ongoing research summary by feedback from all team members to Dave Stokes and Claudio M. by 11/15/99.
  • Current challenges covered under "barriers to transition" (including past and present as well as the future) open for comment to Margo T. by 11/15/99.
• Future (4 Phases)
  • Draft of future needs by all by 11/99 by Claudio M., Bryce S., David G.
  • Meet at ASTM 12/99.
  • Distribute to team 1/00.
  • Comments/remarks by team by 3/00.
  • June telephone meeting 6/00 to discuss and finalize for 9/00 Lead States meeting.

10.0 Briefing of AASHTO Subcommittee on Materials

• Base it on accomplished portion of transition plan, which will include future implementation plan.
• Prepare briefing sheet to send in advance to get response of feeling for what will get support and what won't.
• Haleem Tahir
  • Four subgroups as well as whole subcommittees have interests in ASR
    • Cements and Additives
    • Concrete
    • Aggregates
    • Pavement Surfaces
  • Compare "Boiler Plate" briefing with special page for each subgroup. Dr. Tahir can get us time on agenda for each subgroup as well as subcommittee agenda.
  • Ask Linda Mason to reserve a room for us at TRB on Sunday, January 9, 2000.
• Tom Bryan
  • Match up various research needs to work of individual task forces.
• Claudio Manissero
  • Need good summary of how widespread ASR is. Tap into Bureau of Land Management, Corp of Engineers, and FAA databases to show how big the ASR problem is.
  • Ask Benoit Fournier to give a summary of CANMET ASR results. Margo will call him.
• Bryce Simons
  • Recommended sending draft of transition plan by July 1, 2000 to prepare groundwork. Haleem Tahir will send it to Subcommittees.
  • Send outline in January 2000.
  • Send more complete transition plan by July 1, 2000.
• Claudio Manissero
  • Answer any questions the subcommittee wants addressed after seeing the draft.
• Jon Mallarky
  • Each Lead State should seek out each individual state materials subcommittee representative and ask if they have any issues to be addressed.

ASR Technology Implementation - 1998 AASHTO Lead States Workshop