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International
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What’s
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Abstract Upcoming
Events
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ASCP and ISCP Sign a Memorandum of Understanding
The
memorandum is available to view on the ISCP website at: http://www.concretepavements.org/MoUs.htm ISCP Board and Officer Elections
Nominations Online Terms
will expire in January 2010 for all ISCP Officers (President, Vice-President
and Secretary-Treasurer) as well as half of the Board of Directors. Elections will follow the November Board
Meeting (when the Nominating Committee’s slate of candidates will be
finalized and approved) and newly elected officers and directors will serve
4-year terms beginning Board
of Directors members with terms that expire in January 2010 are: • José Balbo, • Anna-Carin Brink, UWP Consulting ( • Jean-Pierre Christory, LROP (FRANCE) • Juan Pablo Covarrubias, Litoral
Ingeniería Ltda. ( • Michael • James Grove, • André Jasienski, FEBELCEM ( New
criteria and procedures for the nomination and election of officer and
director candidates were established at the August 2008 Board meeting. These can be found on the ISCP website at: http://www.concretepavements.org/Meetings/8-16-08%20Draft%20Bd%20Meeting%20Minutes.pdf Standard
nomination forms and nomination instructions are available on the ISCP
website at: http://www.concretepavements.org/Officer-Director
Nomination Form - 2009_distributed.pdf or http://www.concretepavements.org/Officer-Director%20Nomination%20Form%20-%202009_distributed.doc Members
are strongly encouraged to identify and nominate qualified, worthy candidates
for all open positions no later than September
30, 2009. Check the ISCP
website and upcoming newsletters for additional information on the
call for nominees and election details.
ACPA Annual Meeting Update The
American Concrete Pavement Association (ACPA) is urging members, affiliates,
and others in the transportation-construction community to attend the
Association’s 46th Annual Meeting, scheduled for November 30 through December
4, 2009. The formal ACPA program begins on the morning of December 2. The
event will be held at the Hyatt Regency Grand Cypress, One Grand Cypress
Blvd., Orlando, Florida, USA 32836. Phone: 407.239.1234. Additional details
will be announced and posted soon to the ACPA website (http://www.acpa.org). As
an integral part of ACPA's 46th annual meeting in Orlando, Fla., the
association is presenting "Concrete Pavement University," a new
approach to the very popular "Tech Day" of meetings past. "In
response to the strong demand for technology transfer, technical updates, and
information about research initiatives, we are presenting the most
comprehensive education & training program of its type in the
association's 46 year history," says Gerald F. Voigt, P.E., ACPA
President & CEO. He
explains the format is patterned after basic, intermediate- and advanced
level courses, typically assigned 100, 200, and 300 levels found in
universities. Voigt adds that although ACPA takes a serious approach to
presenting technical topics, there will be a few fun surprises in store for
attendees and CPU instructors alike. The
1-1/2 day event features eight educational tracks, which will begin at with
two concurrent tracks (1 and 2), presented from 1:30 to 3:00 on Thursday,
December 3, followed by tracks 3 and 4 at 3:30 p.m. The program resumes with
tracks 5 and 6 on Friday at 9 a.m., track 6 at 11 a.m., and tracks 7 and 8 at
2 p.m. Here's
the line-up of general topics, as well as the course levels. CPU
Track 1: Airfield Technology Project Applications 101 CPU
Track 2: Practical Resources for Pavement Design and Construction 101 CPU
Track 3: Concrete Mixtures for Paving 201 CPU
Track 4: Curing Concrete Pavements 201 CPU
Track 5: Paving Best Practices 201 CPU
Track 6: Concrete Overlay Project Applications 201 CPU
Track 7: Design and Construction Innovations 301 CPU
Track 8: Practical Sustainability Applications in Concrete Pavements 301 Additional
information will be posted to the ACPA website at http://www.acpa.org. If you would like to receive a copy of the
electronic flyer for the 46th annual meeting flyer, please contact Bill
Davenport at 847.972.9810 or mailto:mbdavenport@acpa.org. National Concrete Consortium Meeting Will be Held in
October The
Fall meeting of the National Concrete Consortium ( Details and agenda
are available at: http://www.cptechcenter.org/t2/ttcc_ncc_meeting.cfm International Concrete Pavement Symposium Will be
Held in November in ISCP
is co-sponsoring the International Concrete Pavement Symposium in This
symposium is aimed at discussing the progressive growth of road
infrastructure in For more
information about the symposium, please visit the website: Call for Papers for Liverpool John Moores
University’s 2010 Annual International Conference The
School of the Built Environment at Liverpool John Moores University (UK) in
association with Tarmac Ltd. and It
is aimed at stakeholders with specific interest in the development and
management of sustainable infrastructure, environmental protection, energy
reduction, developments in road foundations, concrete and asphalt pavements
technology, recycled aggregates in construction and highways maintenance. The
organizers are seeking position papers from all areas of the Sustainable
Aggregates, Pavement Engineering and Asphalt Technology: Design, Management,
Performance and Rehabilitations. Papers describing work in progress should
discuss the short and long-term practical implications of the research being
undertaken. Contributions are especially welcome from consultants, local
authorities, materials suppliers, contractors, research and educational
organizations/institutions. The
deadline for submission of abstracts is http://www.ljmu.ac.uk/BLT/100174.htm Call for Papers for the 32nd International
Conference on Cement Microscopy A
Call for Papers has been issued for the 32nd International Conference on Cement
Microscopy to be held in ·
Application
of microscopy for the quality control of concrete ·
Effect
of additives and admixtures on the microstructure of concrete ·
Relationships
between the microstructure and concrete performance ·
Microstructure
of portland cement, clinker, hydration products, light and heavyweight
aggregates, concrete, slag, fly ash, etc. Abstracts
are due no later than
New Publications on Tie Bars and Concrete Pavement
Recycling Available from ACPA The
American Concrete Pavement Association (ACPA) has recently released two
publications contributing to the state of the art in concrete
technology. "Recycling Concrete
Pavements" is a comprehensive guide that describes concrete pavement
recycling as a proven technology offering an alternative aggregate resource
that is both economical and sustainable. The publication includes chapters
covering production, properties and characteristics, and uses of recycled
concrete aggregate (RCA). Included in the appendices are guidelines for
removing and crushing existing concrete, using RCA in granular subbases, and
using RCA in concrete pavement mixtures. The publication is available in
electronic format through ACPA's bookstore at the following address: https://www.netforumondemand.com/eWeb/Shopping/Shopping.aspx?Cart=0&Site=ACPA_ORG ACPA
has also recently published a research report "A Mechanistic-Empirical
Tie Bar Design Approach for Concrete Pavements" conducted by Applied
Research Associates, Inc. The major objective of the study was to develop a
new methodology for the design of longitudinal joints in concrete pavements
placed on different types of bases. This report can be downloaded for free
along with other available research reports and papers from ACPA at: http://www.pavement.com/Concrete_Pavement/Technical/Downloads/Papers_and_Reports.asp The
National Concrete Pavement (CP) http://www.cptechcenter.org/publications/cp_tech_project_booklet2009.pdf
FRACTURE-BASED
METHOD TO DETERMINE THE FLEXURAL LOAD CAPACITY OF CONCRETE SLABS by Mario
Cristian Gaedicke Hornung Ph.D.
Dissertation Advisor:
Dr. Jeffery R. Roesler The
increasing service demands and limited availability of raw materials for
rigid pavements pose a unique challenge in terms of the initial pavement design,
concrete material selection, and the slab’s cracking performance throughout
its service life. New pavement technologies and concrete materials continue
to be developed to face these challenges, but existing design methods based
on empirical fatigue curves cannot easily relate the fundamental hardened
properties of new concrete materials, the pavement layers, and slab geometry
to the slab’s cracking performance. This research aims to contribute to
filling this gap by proposing a new method to discretely account for crack
initiation, crack growth, and the flexural load capacity of concrete slabs
using mechanical and fracture properties extracted from small-scale concrete
specimens. The method predicts the flexural capacity and crack growth of
large-scale concrete slabs with different geometries and materials by
inserting cohesive surface elements on the expected crack path in the 3-D
finite element model that represents the slab. The cohesive elements were
defined by the total fracture energy (GF), initial fracture energy
(Gf) measured from notched, three point bending beams, and tensile
strength (f’t) measured from split tensile cylinders. The soil
underneath the slab was characterized as a linear elastic spring elements
with their stiffness obtained from a beam on soil test. The simulations from
the 3-D slab models reasonably matched experimental tests of notched concrete
slabs confirming the feasibility of the proposed method. The softening curve
type (i.e. bilinear, linear or exponential) embedded into the cohesive
elements and the variation in soil stiffness had a similar effect on the
flexural capacity of the 150 mm concrete slabs. In contrast, the soil
stiffness was a more significant factor affecting the flexural capacity of
the 63 mm slabs relative to the softening model. Although the bilinear
softening model more readily represented the fracture behavior of concrete
beams, the linear softening model applied to slabs was able to reasonably
predict the flexural load capacity of the experimental slabs while
significantly reducing the computation time. Alternative concrete materials
were simulated with the fracture-based methodology. Relative to normal
concrete, higher crack resistance and flexural load capacity were attained
for concrete containing structural fibers while lower load capacity and more
rapid crack propagation occurred in concrete slabs with recycled concrete
aggregates. This fracture based methodology constitutes an important step
toward a more fully mechanistic pavement design approach that would integrate
the specific concrete material fracture parameters, slab geometric
properties, and support conditions into the prediction of the rigid pavement
cracking performance.
13th REAAA (Road Engineering
Association of Asia and Australasia) Conference 21st 51st Brazilian Concrete Congress http://www.ibracon.org.br/eventos/51cbc/ingles/informacoes.asp Ninth International Conference on
Superplasticizers and Other Chemical Admixtures in Concrete http://www.intconference.org/Seville.htm Tenth International Conference on
Recent Advances in Concrete Technology and Sustainability Issues http://www.intconference.org/Seville1.htm
Ninth International Symposium on
Brittle Matrix Composites ( TREMTI 3: 3rd International Symposium
on Stabilization and Recycling http://www.eupave.eu/documents/events/tremti-2009.xml
ISCP “Mid-Year” Board Meeting http://www.concretepavements.org
ACPA’s 46th Annual
Meeting November
30 - December 4, 2009 in Orlando, Florida, USA
http://www.concretepavements.org International Rilem Conference on
Progress of Recycling in the Built Environment http://www.recycle2009.org/index.html
ISCP Annual TRB Board Meeting January
9, 2010 at 5:30 PM in Washington DC, USA http://www.concretepavements.org (details to
follow) 89th Transportation Research Board
Annual Meeting 13th International Winter Road
Congress http://www.aipcrquebec2010.org 9th Annual International Conference
addressing: Sustainable Construction Materials and Technology in Asphalt,
Pavement Engineering and Highways Maintenance http://www.ljmu.ac.uk/BLT/100174.htm 11th Heavy Vehicle Transport
Technology Symposia (HVTT11) http://www.hvttconference.com/ Thirty-Second International
Conference on Cement Microscopy March
28 – http://www.cemmicro.org/icma/conference.html 1st International Conference on
Pavement Preservation http://www.pavementpreservation.org/icpp/ 2010 FAA Worldwide Airport
Technology Transfer Conference http://www.airtech.tc.faa.gov/att2010/
http://www.trb.org/Conferences/2010/Nanotech 7th International Symposium on
Cement & Concrete 7th International Conference on
Fracture Mechanics of Concrete and Concrete Structures GeoShanghai 2010 http://www.geoshanghai2010.org/index.asp Sustainable Construction Materials
& Technologies http://www.uwm.edu/Dept/CBU//ancona.html
http://www.fhwa.dot.gov/pavement/concrete/2010acptpconf.cfm Maintenance Superintendants
Associations (
http://www.citg.tudelft.nl/live/pagina.jsp?id=46c8bc2d-df2b-44c7-8cda-fc456c6c9648&lang=en
Organized
by EUPAVE http://www.2010concreteroads.org/ 10th International Conference on
Low-Volume Roads http://www.trb.org/conferences/2011/10LVR 24th September
25-30, 2011 in http://www.piarc.org/en/congresses-seminars/road-congresses.htm International
Conference on Concrete Pavement Design, Construction, and Rehabilitation
If
you wish to submit an announcement and/or link for an upcoming conference,
meeting, or call for papers for the next ISCP e-newsletter, please contact us
at newsletter@concretepavements.org. The
ISCP E-Newsletter is produced by Editor-in-Chief, Amanda Bordelon, Associate Editor,
Dr. Jake Hiller, and Assistant Editors: Dr. Cristian Gaedicke, Corey
Zollinger, and Nancy Whiting.
Suggestions for future newsletters are welcomed at newsletter@concretepavements.org.
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