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ACPA enhances seminars

January 15, 2004
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New technical references among upgraded association offerings

ACPA has refined its educational and training programs,
offering a number of seminars that provide hands-on technical training in
concrete pavements.

The highly rated courses include "Concrete Pavement
101," a three-day training and technology transfer seminar that focuses on
technical and engineering aspects of concrete pavement design, rehabilitation
and construction issues.

ACPA's "Professors' Seminar" provides in-depth
instruction on performance and economic factors related to concrete pavements
and the latest pavement design methods, as well as mechanistic-empirical design
procedures and state-of-the-practice construction methods. The course is
limited to university professors and instructors at accredited universities
with civil engineering programs.

These courses typically sell out quickly and class size is
limited to allow for an optimal instructional environment. For information
about future courses, please contact Jim Lafrenz at 202/842-1010 (e-mail:
[email protected]) or Mike Ayers at 847/966-2272 (e-mail:
[email protected]).

ACPA contributes to research project

ACPA and several of its affiliated chapter and state paving
associations are participating in a pooled-fund research project that will
result in guidelines to improve the quality of concrete pavement.

The $1.4 million project, conducted by Iowa State
University's Center for Transportation Research and Education is called
"Material and Construction Optimization for Prevention of Premature
Pavement Distress in Portland Cement Concrete Pavements." style="mso-spacerun: yes"> 

ACPA and several of its chapter and state affiliates are
contributing to the pooled funding over a period of five years. ACPA staff also
is participating in an advisory capacity to the technical advisory committee.
The panel reviewed progress of the project, notably:  workability, strength development, air content, permeability
and shrinkage.

The Federal Highway Administration and 16 U.S. states also
are contributing to the project that has a combined budget of $1.2 million.
Iowa is managing the effort. Other states include Georgia, Indiana, Kansas,
Louisiana, Michigan, Minnesota, Missouri, Nebraska, New York, North Carolina,
North Dakota, Ohio, South Dakota, Texas and Wisconsin.

Test development and demonstration projects are scheduled
from 2004 through 2006. Technology transfer materials will be published
throughout the project timetable, with a final refined suite of tests for concrete
paving being published in mid-2007. The study was initiated by the Midwest
Concrete Consortium, a voluntary group of state DOT and industry experts that
meet semiannually to exchange ideas and information. It will be conducted
through an active partnership of the participating states and organizations.

For additional information, contact Jerry Voigt at
847/966-2272 (e-mail: [email protected]).

ACPA develops new technical resources

In response to the increasing demand for technical
information about concrete pavements, ACPA has developed a number of new
technical resources, including:

"Concrete Pavement Repair Manual" (JP002P):
The  definitive source of
information about concrete pavement repair methodologies. This handy field
manual fits into your back pocket and is an excellent resource for inspectors,
engineers, contractor crews and anyone involved with concrete pavement repair
on both airfields and roadways. The guidelines cover concrete pavement repair
and restoration techniques including full- and partial-depth patches, diamond
grinding and load transfer restoration.

"Constructing Smooth Concrete Pavements" (TB006P):
This technical bulletin covers all of the aspects of concrete pavement design
and construction that affect pavement smoothness. Factors discussed include
base and subbase, horizontal and vertical curves, embedded items, concrete
mixture, grade preparation, stringline setup, operation of the paving machine
and finishing crew activities. The measuring devices for smoothness measurement
in construction acceptance also are covered.

"Slag Cement Use on Paving" (PL517P): This brief
explains how using slag in concrete paving mixtures can enhance the long-term
benefits of concrete pavements. Definitions of the hydraulic activity, effects
on plastic and hardened properties also are listed.

"Airfield Joints, Jointing Arrangements and Steel"
(TB017P): This technical bulletin describes the design, layout and construction
of joints for pavements that serve aircraft larger than 100,000 lb.