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Volume 5, Number 41
October
21, 2005
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Convention
Countdown
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Tech
Day Provides Latest
Research, Technology Information
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ACPA's
popular Tech Day is scheduled for Friday, December 2 at the ACPA
Annual Convention.
Each
of the concurrent sessions follows a specific track, including:
Sustainability; Surface Characteristics; Emerging Technologies;
Contracting Methods & Specifications; and Design/Construction
issues.
Featured speakers will present the latest research results, technological
developments, and best practices associated with concrete pavements.
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Katie Hall, PhD, P.E., ProTech Engineering, discusses open graded
bases at Tech Day 2004. (ACPA ON THE GRADE
file photo.) |
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The event will begin with a general session, which will feature
speakers on the Green Highways initiative and surface texture. |
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The session also will include the presentation of the Marlin J.
Knutson Award for Technical Achievement and Lifetime Pavement
Award.
The
ACPA convention is scheduled for November 30 to December 2 at
the Renaissance
Esmeralda Resort and Spa in Indian Wells, Calif.
The
broad theme for the convention this year is "Partnering for
a Sustainable Future." Click here
to view a convention agenda.
ACPA
urges members to register now. Click here
to download the registration form and information.
ACPA
also encourages attendees to book hotel rooms now, as the discounted
rate will only last while ACPA's reserved rooms are open.
Call 1-877-804-4070 and mention the "American Concrete Pavement
Association" to receive the special rate of $159 per night plus
tax. To reserve rooms online, click here.
For
more information on the convention, contact Maryann
Beckman-Berman at 847-966-2272.
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ACPA
Convention Sponsorships Offer Visibility, Promote Goodwill
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A
new, simplified system now allows ACPA Annual Convention sponsors
with greater flexibility and more choices. Sponsorships range
$750 to $2,600.
Among
the different types of sponsorships, members and affiliates may
sponsor any of the following meetings:
• Tech Day General & Concurrent Sessions;
• Opening Day General Session;
• Performance-Related Specifications/Warranties Session;
• Annual Membership and Board Meeting;
• Past Chairmen's Council; and
• Opportunity Analysis Meeting.
To
view these and other sponsorship opportunities, click here
to download the sponsorship program form. Contact Maryann
Beckman-Berman at 847-966-2272 with any questions. Sponsorship
forms are due by November 1.
Sponsorship
of the ACPA Annual Convention provides visibility for members
and promotes goodwill with customers and others.
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ACPA
thanks member companies that have already pledged sponsorships:
Gold Sponsors
• Degussa Admixtures – Master Builders
• Guntert & Zimmerman Construction Div., Inc.
• W.R. Meadows, Inc.
Bronze Sponsors
• Ash Grove Cement Company
• Koss Construction Company
Individual Event Sponsors
• Buzzi Unicem USA Concrete
• Dayton Superior Corp.
• Concrete Reinforcing Steel Institute
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ACPA
Literature Addresses
Alkali-Silica Reaction Acceleration
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The
latest issue of ACPA's R&T Update addresses surface deterioration
caused by alkali-silica reaction (ASR) acceleration by potassium
acetate deicers.
The
issue also details an interim procedure developed by the Innovative
Pavement Research Foundation (IPRF) and Federal Aviation Administration
(FAA) to screen and mitigate ASR by airfield pavement deicers
for new concrete pavement construction.
ACPA's work in this area, including the R&T UPDATE, were prompted
by the FAA, which sought a solution to the problem.
The agency plans to publish ACPA's report in an FAA engineering
brief.
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placing the R&T UPDATE in a brief, it becomes significant and
is considered by all consultants and airport officials during design
of a new pavement on airfields," said Rodney Joel, P.E., FAA's
Pavement Engineer, based in Kansas City, Mo. |
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The
FAA will use the latest R&T update in an upcoming brief sent
to consultants and airport officials. |
Joel plans to add commentary to indicate that while the FAA has
not completely resolved the technical issues, research on the topic
continues.
He also said he wants to dispel rumors that the FAA discourages
the use of deicer chemicals and the use of concrete. The
FAA will release the brief later this fall.
Click here
to download this issue or back issues of R&T UPDATE. Current
subscribers to R&T UPDATE also will receive a copy of this issue
by mail very soon. Questions about R&T UPDATE? Contact Steve
Waalkes at 847-966-2272. |
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Industry
Research Alliance Approves Plans
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The
Transportation Engineering and Road Research Alliance (TERRA)
board members met yesterday to approve a three-year strategic
plan and an annual business plan.
"With the approval of these new plans, TERRA has a clear
direction and a very straightforward working plan," said
Gerald F. Voigt, P.E., ACPA President and CEO. Voigt serves
on the TERRA Board of Directors.
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"These
are important steps in our mission of expanding the reach and
offering the full capabilities of this world-class testing facility
to more people, companies, and public agencies in the surface
transportation community," he added.
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Far
reaching ... Expanding its reach and offering the capabilities
MnROAD to the surface transportation community are among TERRA's
key objectives. |
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Board members also heard a presentation on "Lessons Learned
from MnROAD" from Len Khazanovich, PhD, of the University
of Minnesota Department of Civil Engineering.
With the goal to demonstrate MnROAD's capabilities to the broad
surface transportation community, Khazanovich is compiling a
list of projects and other facets of research and testing conducted
by MnROAD.
Voigt added that the National Concrete Pavement Technology Center
— the industry's new research and technology center —
has become a member of the TERRA board, as has the Norwegian
Public Road Association. The Associated General Contractors
(AGC) of Minnesota is said to have committed to participating
on the board, as well.
The
goals for this vision of the future use of MnROAD include:
• to expand productive research partnerships;
• to provide effective transportation engineering and road
research; and
• to communicate transportation engineering and road research
activities, benefits, and results.
TERRA
is a road research governance structure that exists to facilitate
a comprehensive research program, with a focus on gathering
the transportation industry to take advantage of the MnROAD
test facility and associated resources. Voigt represents ACPA
on the Board, which also includes Matt Zeller, P.E. (Concrete
Pavement Association of Minnesota), and Tom Cackler, P.E. (for
the National Concrete Pavement Technology Center), representing
the concrete industry.
The TERRA board also is comprised of industry representatives
from the Federal Highway Administration, Mn/DOT, and local agencies,
as well as members of academia, the ready-mixed concrete industry,
and the asphalt pavement industry.
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ACPA
Urges Early Registration for World of Concrete
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ACPA
encourages members to network with 1,600 exhibiting companies
at the 2006 World of Concrete show from January 16 - 20 at the
Las Vegas Convention Center in Las Vegas, Nev.
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ACPA
is offering free exhibition registration to members who use the
Association's code, A14, as well as $10 off seminar registrations.
World
of Concrete will feature almost 1,600 exhibiting companies, as
well as a range of educational seminars and demonstrations for
participants.
Click
here
to receive free exhibition registration through ACPA. Visit the
World
of Concrete website for more information on the agenda, as
well as hotel and travel reservations.
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World
of Concrete Encourages Early Bird Registration for Women's Forum
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A
special "Women in Concrete" forum will be among the
highlights of World of Concrete. Early registration for the forum
will be $25 until December 30, and then $40 thereafter.
The forum aims to bring together women in the concrete construction
industry to network and has already received positive responses,
according to organizers from Hanley Wood.
The
event will take place Wednesday, January 18 from noon to 2:00
p.m. in the Las Vegas Convention Center during the World of Concrete
Convention.
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ACPA
Offers Final Copies of Conference Proceedings
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ACPA
is offering its final few proceedings from the 2005 International
Conference on Best Practices for Ultra-thin and Thin Whitetoppings.
The proceedings are a valuable resource on current whitetoppings
technology. The proceedings feature state, regional, and field perspectives
on whitetoppings presented at the event, which was sponsored by
ACPA, the Federal Highway Administration, the Colorado Department
of Transportation, Transportation Research Board, and International
Society for Concrete Pavements. Airport application for whitetoppings
also is included.
To order a package containing both items for $30, contact Gloria
Hallman at 847-966-2272.
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Admixtures
Supplier Opens New Manufacturing Facility
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Degussa
Admixtures, Inc. recently opened a new manufacturing facility
in Phoenix, Ariz., to serve the company's ready mix and precast
concrete producer customers in Arizona and New Mexico.
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20,000 square-foot, 4-million gallon/year plant will serve as a
manufacturing location for the majority of the bulk admixture products
sold in Arizona and New Mexico. The facility also will serve as
a warehouse and distribution location for the company's other admixture
products. |
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Concrete
Paving School to Offer Training Workshops
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Guntert
& Zimmerman Const. Div., Inc., will hold its 19th Annual Concrete
Paving School from January 24 - 26 in Ripon, Calif.
Participants may register for the workshops they feel are of most
benefit to them.
Each
of the following workshops begins with basics and advances to
cover maintenance, adjustments, troubleshooting, and safety aspects:
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•
Slipform Paver Operator Control System;
• Dowel Bar Insertion;
• Paver Hydraulic Circuits;
• Detailed Equipment Orientation & Safety;
• Concrete Mix Design for Paving; and
• Advanced Machine Troubleshooting.
Enrollment
for the workshops fills at a first-come, first-served basis, so
early registration is encouraged. To register online, click here.
Exact locations and other details will be mailed with registration
packets. For more information, contact Jan
Miller at 209-599-0066, ext. 206. |
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Virginia
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Van
Trip Spotlights Concrete Rehabilitation Solutions...
Representatives from
ACPA national and chapter staff, the Federal Highway Administration,
and
other industry organizations visited concrete pavement sites in
the Hampton Roads and Richmond Districts, October 10-12, on a
van trip coordinated by ACPA-Northeast Chapter staff and the Virginia
Department of Transportation (VDOT).
Robert
Long, Jr., Regional Director of ACPA-Northeast, worked with local
VDOT personnel to organize the trip.
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trip participants examine a CPR project on I-64 near Chesapeake,
Va. |
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Participants
toured pavement sites in need of rehabilitation, as well as pavements
showing excellent performance.
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The tour also showed participants a nighttime concrete pavement
restoration (CPR) project under construction, where they viewed
full depth repairs and diamond grinding.
Additionally, the tour highlighted two 10-year-old thin bonded
concrete overlays in excellent condition to feature another tool
available to VDOT representatives for CPR.
The
tour brought together industry representatives out on the grade
to view real needs and open up a dialogue between officials and
industry members on the best, most cost-effective rehabilitation
solutions for concrete pavements.
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Western
States
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Western
States Chapter Announces
New Executive Director
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The
Western States Chapter - ACPA announced the appointment of Tim
Hackworth, P.E., as the incoming Executive Director of the Western
States Chapter.
Hackworth will succeed Tom Salata, the current Executive Director,
who will be retiring at the end of the year. The transition
will begin over the next few months with the official exchange
of duties effective January 1.
Hackworth currently is the Public Works Director for Placer
County, Calif. In this role, he is responsible for the overall
operation of the public works program for the County. Duties
include the supervision of 260 employees and the implementation
of a $70 million annual budget.
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Hackworth has been appointed the new Executive Director of the Western
States Chapter - ACPA. |
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He also is directly responsible for the function and performance
of the entire Public Works Agency, consisting of Road Maintenance
Fleet Services; Roadway and Bridge; Design and Construction Finance;
Land Development; Engineering & Map Processing; Transportation Planning
Transit (two systems); Lake Tahoe Erosion Control Design & Construction;
and Flood Control. |
Previously,
he was the Director of Public Works for the city of Grass Valley,
Calif. Before he entered public service, Hackworth owned his own
public works consulting firm.
After his first year with the Western States Chapter, he will relocate
the Chapter offices to Grass Valley, Calif., which is central to
both Sacramento, Calif., and Carson City, Nev., the two political
headquarters of California and Nevada.
He earned his Bachelor of Science Civil Engineering degree at California
Polytechnic University, Pomona, CA, He also is the President of
the County Engineers Association of California.
"We are very fortunate to have selected Tim Hackworth as our incoming
Executive Director," said Bill Larson, Vice President - Regional
Promotion (SW) for CEMEX and current Chairman of the Western States
Chapter Board of Directors. "We would also like to thank Tom Salata
for his eight years of excellent service and dedication to the advancement
of concrete pavement in California and Nevada."
Larson encouraged ACPA members and affiliates to join the Chapter's
leadership in welcoming Tim Hackworth in his new position with the
ACPA. To contact Hackworth or Salata, please send e-mail to wscacpa@aol.com.
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Western
States, ACPA and Caltrans Hold Meeting for Quieter Roadways...
The ACPA - Western States Chapter recently and the California
Department of Transportation (Caltrans) met recently to discuss
ongoing and future research needs for concrete highways.
The
meeting, themed, "Forging a Partnership for Quieter Roadways,"
presented the
two groups with the opportunity to present current research and
plans.
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Paul
Wiegand, transportation research engineer with the Iowa Center
for Transportation Research and Education, detailed current and
future concrete pavement projects at the National Concrete Pavement
Technology Center at Iowa State University.
Tom
Pyle, Chief of Rigid Pavement and Structural Concrete, from Caltrans'
Office of Pavement Standards, also presented the agency's concrete
pavement program, noting concrete's success on California's roads.
"The
concrete pavement designed by our forefathers really only has
one mistake — it was a 20-year design that is lasting 30
to 40 years," Pyle said, emphasizing that pavement selection
needs to be based primarily on durability.
Caltrans
officials also want to implement a standardized and systemized
approach to training and expressed interest in working with ACPA
in that regard, said Leif Wathne, P.E., ACPA Director - Highways.
In addition to Tom Salata, Executive Director, Western States
Chapter, participants at the meeting included Tim Hackworth, the
incoming Executive Director; and Carolyn P. Ewing, Government
Affairs Director.
Representing ACPA national staff were Larry Scofield, P.E., Director
- Environmental Technology and Wathne. John Roberts, Executive
Director, International Grooving & Grinding Association also
participated.
The
two organizations agreed to coordinate and share future research
findings and initiatives.
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Are
Surface Treatments Needed to Prevent Scaling?
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As
temperatures start to drop and contractors finish jobs for the winter,
concerns may develop about the durability of recently-placed concrete
pavements.
In some instances, this concern might be warranted. But in most
cases, properly constructed, air-entrained concrete pavements can
withstand a significant number of freeze-thaw cycles during the
first winter -without any detriment to the pavement.
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major factors are essential to durability of these pavements. First,
it is critical that the mix design, proportioning, and materials
selection are adequate for the climatic and service conditions.
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Contractors
rushing to place concrete pavement before winter can take several
steps to ensure the new pavement will endure the harsh season without
scaling. |
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Primary
concerns in this phase should be:
• Appropriate
content of cementitious materials;
• Low water-cementitious materials (w/cm) ratio;
• Sound, clean, durable, well-graded aggregates;
• Adequate air void system (not just air content); and
• Proper proportioning, mixing, placement, and finishing.
The second critical item is curing of the concrete pavement. Curing
is essential for ensuring durability. If improper or inadequate
curing measures are used, the likelihood of premature distresses
increases dramatically.
The
third factor to consider for a durable, scale-free concrete pavement
is a period of air drying. A minimum of 30 days, after the curing
period has ceased, is recommended to allow excess water to evaporate
from the slab. During this time, deicers should not be used. In
fact, some municipal agencies do not allow deicer salts to be
used for the first one or two winters of a new concrete pavement.
The
last consideration is the use of a surface treatment or sealer.
In general, surface treatments are not needed on good quality
concrete pavements that have been properly constructed. However,
the use of a boiled linseed oil or silane/siloxane treatment may
be warranted if there is concern or if prior experience dictates
its use. Sealing the surface of a concrete pavement might be an
inexpensive way of preventing scaling of a concrete pavement if
there is any doubt about its inherent scale-resistance.
For
more information, see ACPA Publication IS117P, "Scale-Resistant
Concrete Pavements," available free on ACPA's website by clicking
here.
Questions? Contact Steve
Waalkes, P.E., ACPA Managing Director - Technical Services,
at 847-966-2272.
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Please note the following events scheduled for the weeks ahead. Items
posted on blue fields are sponsored
or co-sponsored by ACPA National. All others are hosted by ACPA affiliated
Chapter/States or other organizations. For a complete list of events
for 2005, visit http://www.pavement.com/activities/calendar/main.html.
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Oct.
25
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3rd
Annual "Count on Concrete" Pavements Workshop, Holiday
Inn Macon Conference Center, Macon, GA. For information, please
contact Nancy Bowen at
919-462-9850 ext. 101. |
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Nov.
1
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3rd
Annual "Count on Concrete" Pavements Workshop, Metropolitan
Convention Center, Columbia, SC. For information, please contact
Nancy Bowen at 919-462-9850
ext. 101. |
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Nov.
1 & 3
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Nevada
Infrastructure Concrete Conferences, Reno (Nov. 1) and Las Vegas
(Nov. 3). For information contact the Nevada T2 Center: 775-784-1433. |
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Nov.
6-10
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Fall
ACI Convention, Kansas City, MO. ACI 325 (Concrete Pavements)
Committee meetings are Tuesday, November 8. For information contact
Leif Wathne, ACPA: 202-887-8293. |
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Nov.
7
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Southeast
- ACPA Chapter Membership/Board of Directors Meeting, Renaissance
Concourse Hotel, Atlanta, GA. For information, please contact Greg
Dean at 919-462-9850 ext. 101. |
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Nov.
8
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8th
Annual Local Roads Seminar, Ritz Charles Conference Center,
9000 W. 137th St., Overland Park, KS 66221. Sponsored by the Missouri/Kansas
Chapter - ACPA. For more information, please contact Matthew
W. Ross, P.E., Executive Director at 913-381-2251. |
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Nov.
15-16
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2nd
Annual North Carolina's "Count on Concrete" Pavements
Workshop, Sheraton Imperial Hotel, Durham, NC. For information,
please contact Nancy Bowen
at 919-462-9850 ext. 101. |
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Nov.
16
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Local
Streets & Roads Seminar - Texarkana,
AR. For more information, contact Terri Irvin at 405-767-5100. |
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Nov.
16-17
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New
York Concrete Conference, Adam's Mark Hotel, Buffalo, NY. For
information contact Jim Shea, ACPA-Northeast
Chapter, 716 648-2061. |
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Nov.
29 - Dec. 2
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2005
ACPA Annual Convention, Palm Springs, Calif. For information
contact Maryann Beckman
or Polina Demidova,
ACPA: 847-966-2272. |
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Dec.
6-10
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National
League of Cities Congress of Cities, Charlotte, NC. For information
contact Scott Haislip,
ACPA Director - Streets & Local Roads, at 219-629-3194. |
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