Schedule -- Durability
Workshop, Hawaii, January 28 & 29, 2004
8:00 am –
Workshop Begins, Hawaii
Department of Transportation -- Highway Division
Objective: Provide background, scope, and purpose for the workshop.
8:00 am – Welcome, Instructors, FHWI-ACI Cooperative Workshops (1A)
-- Hawaii Department of Transportation --
-- Federal Highway Administration -- Technical Training, Jon Mullarky
-- Self-Introductions
Objective: Provide basic instruction and resources
for the understanding of how AAR deterioration develops, how it can damage
concrete, and how they can be identified.
8:55 am –
Alkali Silica Reactivity (ASR), the Basics of ASR, Richard C. Meininger,
Consultant PE,
Columbia, Maryland
(2A)
9:40 am –
Exercise to Examine Several Rock, Mineral, and
Concrete Specimens
Objective: To reinforce among highway engineers and
technologists that resources are available concerning the basics of geology and
petrography. It is important to know
when to call upon professionals concerning deterioration of concrete, or
aggregates evaluation.
9:45 am –
Break, 15
Minutes
Session 3 -- Petrography
Objective: Provide a basic introduction to
petrography and its use in improving the durability of concrete and
aggregates. Show how the geologist and
petrographer can work with highway engineers and technologists to understand
mechanisms of deterioration exhibited in the field and to formulate improved
specifications and qualification criteria for aggregates and mixtures.
10:00 am –
Petrography of Hardened Concrete, D. Stephen Lane, Research Scientist --
Geologist, Virginia Transportation Research Council, Charlottesville, VA
(3A)
10:45 am –
Rocks and Minerals, Lane (3B)
Emphasis on quarried igneous (basalt) rocks crushed
for coarse aggregate and fine aggregate.
How these rocks weather -- comparing newer with older basalt.
11:30 am –
Lunch Break, One
Hour
12:30 pm - Afternoon Session
Objective: To cover the technology for identification, mitigation, and prevention of damage to concrete due to corrosion of steel in concrete structures and pavement.
12:30 pm – Corrosion of Steel, Charles Nmai, Master Builders, Inc., Cleveland, Ohio (6C)
Basic corrosion mechanisms of steel in concrete are described.
1:10 pm –
Corrosion Inhibiting Admixtures, Nmai (6I)
Practices and materials alternatives for using admixtures in concrete mixtures.
1:50 pm –
Break, 15
Minutes
2:05 pm –
Life 365 Software for Corrosion Life Cycle Analysis, Nmai
(6L)
New computerized techniques for comparing the
performance and costs for the use of different materials combinations in
concrete.
2:45 pm –
Corrosion Experience and Specifications in Virginia,
Lane
(6TM)
Review of VDOT's approach to addressing corrosion.
3:20 pm --
Overview of Chemical Admixture Types and Uses, Nmai (ADMX)
A review of the importance of admixtures in
achieving durable concrete
3:55 pm – Exercise Continued – Rock
and Mineral Samples and Concrete Specimens
Objective: To cover the technology for identification, mitigation, and prevention of damage to concrete due to drying shrinkage and thermal bulk volume change mechanisms in concrete.
8:00 am – Volume Change, Meininger (7T)
8:35 am – Cracking in Concrete -- Causes and Cures (Excerpts), David W. Fowler, Ph.D., P.E., U of Texas, Austin, Texas (Reviewed by Meininger) (7B)
A look at the types of cracking in concrete and
repair approaches.
Objective: To cover the technology for identification, mitigation, and prevention of damage due to chemical sulfate attack, delayed ettringite formation (DEF), physical salt attack, seawater exposure, and carbonation.
9:10 am – Sulfate Attack, DEF, and Physical Salt Deterioration, Lane (5T)
9:50 am –
Break, 15
Minutes
Session 9 -- Regional/Local
Case Studies
Objective: To have a local experts or researchers
review the types of durability issues and failures that have occurred in local
and/or regional concrete pavements and structures.
10:05 am – Concrete Durability Issues and Failures in Hawaii, Duane L. N. Lee, Wiss, Janney, Elstner,
Assoc., Inc. (9Z)
Objective: To review the alternative strategies to
qualify aggregate sources for different types of highway and transportation
construction – both for new or changed aggregate resources with no service
record, and for existing sources where detailed field service evaluations can
be valuable.
10:50 am – Evaluation of Aggregate Resources and Service Record, Lane
(10T)
11:25 am – Exercise Continued – Rock
and Mineral Samples and Concrete Specimens
11:30 am –
Lunch Break, One
Hour
12:30 pm - Afternoon Session
12:30 pm –
Guideline I — Field Distress Survey, and Sampling
Procedures for Distressed Concrete Pavements, Meininger, Brief Review of Publ. Nos. FHWA-RD-01-163, 164, & 165; Volumes 1,
2, & 3; Guidelines for Detection,
Analysis, and Treatment of Materials Related Distress (MRD) in Concrete
Pavements by Michigan Tech University, August 2002 (8C)
12:50 pm –
Guideline II — Laboratory Testing, Data Analysis, and Interpretation Procedures
for Distressed Concrete Pavements, Meininger,
Brief Review (8D)
Objective: Alternative approaches to give durability considerations a high priority in the design, specification, construction, repair, and maintenance of concrete pavements and structures – use of a flow chart or decision tree approach, balancing strength and durability requirements.
1:10 pm – Selection of Cementitious Materials, Lane (11C)
1:50 pm – Guideline III - (A) Treatment and Rehabilitation of Materials Related
Distress (MRD) in Concrete Pavements, Meininger,
Brief Review Publ. Nos. FHWA-RD-01-163, 164, & 165; Volumes 1, 2, & 3; Guidelines for Detection, Analysis, and
Treatment of Materials Related Distress (MRD) in Concrete Pavements, August
2002
(11A)
2:10 pm –
Guideline III (Continued) — (B) Materials and Mix Design for Prevention of
Materials Related Distress (MRD) in Concrete Pavements, Meininger, Review (11B)
2:30 pm –
Break, 15
Minutes
Session 13 -- Durable
Concrete Quality Assurance and Quality Control
Objective: To review methods and specifications that can be used to improve the durability of concrete used in highway and transportation concrete. Included will be development of mixtures, inspection methods; and communication regarding quality and durability.
2:45 pm – Durable Concrete QA/QC in the Field, Meininger (13T)
3:30 pm –
General Discussion
·
Suggestions
for the Application of the Technology Covered in the Workshop
·
Questions
and Comments from Participants
·
Evaluation
of the Workshop, Suggestions for Future Workshops -- Evaluation Forms
Note – An Executive
Summary for Decision-Makers is Available – A summary of the state-of-the-art technology
reviewed in the workshop and resources available to investigate concrete
deterioration and specify durable concrete.
The slides are included in the binder as (1BC):
– Engineering, New Technology and New Materials, by Richard C. Meininger, Consultant, Columbia, Maryland
– Petrography is Essential, by D. Stephen Lane, Research Scientist -- Petrography, Virginia Transportation Research Council, Charlottesville, Virginia (1BC)