Future trends in Concrete For Ab Dhabi 2030 or Ab Dhabi 2030 For

70 Pages·2010·6.07 MB·English

Concrete Mix Design Conference
Abu Dhabi
May 18-19, 2010
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Prof. Abdul Rahim Sabouni
BSc (Hons), MSc (GWU), PhD (Cornell), PEng, FASCE, FACI
Vice Chancellor and CEO
ALHOSN UNIVERSITY
Professor A. R. Sabouni, 18thMay 2010 1
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Prof. Abdul-Rahim Sabouni
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Professor Abdul Rahim Sabouni is the Vice Chancellor and CEO of ALHOSN University. He holds a PhD
degree from Cornell University in Structural Engineering, a Masters Degree from the George Washington
University, and a Bachelors degree from Damascus University, and has more than 30 years of academic and
professional experience in the US,Canada and the Middle East.
In addition to being a Professor at ALHOSN University, he is an adjunct Professor in three Canadian
Universities,Carleton University,the University ofWestern Ontario and Ryerson University.
As a professional Engineer Dr. Sabouni worked as a buildings design consultant, and technical advisor in the
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Mosque and the Emirates Palace projects.
Dr. Sabouni is a Professional Engineer in Ontario,Fellow of the American Society of Civil Engineers,Fellow of
the American Concrete Institute,the founding president of the ACI-UAE Chapter,and the first recipient of the
GeorgeWinter FellowshipAward in Cornell University.
Prof.Sabouni publications include articles in reinforced concrete materials,and in expert systems for concrete
mixes,and deteriorated concrete structures.
http://www.sabouni.com
Professor A. R. Sabouni, 18thMay 2010 2
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Introduction
(cid:121)
Expert Speculations
(cid:121)
Governing Factors
(cid:121)
Trends
(cid:121)
Abu Dhabi 2030
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Conclusions
(cid:121)
Professor A. R. Sabouni, 18thMay 2010 3
Introduction
Professor A. R. Sabouni, 18thMay 2010 4
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(cid:121) Concrete is very old in history, but reinvented by in its modern
ffoorrmm iinn tthhee 1199tthh cceennttuurryy.
(cid:121) Early concretes were used by Syrians around 6500 BC and spread
through Egypt and ancient Greece, but it was the Romans who
refined the mixture's use. Even the word "concrete" is derived from
the Latin "concretus," meaning "to grow together."[Keim 2005]
(cid:121) While lower grades were used in everyday construction, the gems
of Roman engineering - the Appian Way (which linked Rome to the
East), the Coliseum, the Pantheon, and aqueducts - used a high-
performance concrete that derived its strength from ashes emitted
by Mt. Vesuvius.
Professor A. R. Sabouni, 18thMay 2010 5
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(cid:121) "This substance, when mixed with lime and rubble," wrote
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"not only lends strength to buildings of other kinds, but even when
piers of it are constructed in the sea, they set hard underwater.“
(cid:121) As the Dark Ages descended, Roman concrete mastery was lost,
for nearly 1500 years, till concrete was rediscovered in the 19th
cceennttuurryy aanndd bbeeccaammee ssoo ppooppuullaarr tthhaatt iitt iiss nnooww tthhee mmoosstt uusseedd
construction material in the world.
(cid:121) Modern Concrete owes much to France's Joseph-Louis Lambot
who was the first to submit a patent for "ferro-cement". This
original reinforced concrete was used in various applications: boats,
aparttmentt bbllockks, workks off artt, ettc.
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(cid:121) There is just no question about it: Concrete is the world's most
iimmppoorrttaanntt mmaatteerriiaall..
(cid:121) Each year, billions of tons of concrete become the stuff of buildings,
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(cid:121) Concrete is probably used more widely than any other substance
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for every man, woman, and child on Earth. [Keim 2005]
(cid:121) YYeett ccoonnccrreettee iiss oonnee ooff tthhee ssiimmpplleesstt mmaatteerriiaallss.. AA ttyyppiiccaall mmiixx ooff
concrete simply consists of 60 to 75 percent sand and gravel or
crushed stone, 15 to 20 percent water, and 10 to 15 percent
cement, which is prepared by roasting limestone, clay, and other
iingreddiientts.
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Concrete Construction invited several industry leaders to speculate upon
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years.Here is what they say [1]:
(cid:121) Robert A. Garbini: “They will use high technology to adjust for raw material variations
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speed construction while reducing energy costs.”
(cid:121) William F. Baker: Nanotechnology is allowing scientists and engineers to analyze how
andd whhy materialls bbehhave as thhey ddo....TThhe mixing andd prodduction techhnollogy may bbe
similar to current practice,but the product will be quite different.
(cid:121) Ken Hover: The realityy off gglobal warmingg will settle in, and with energgyy costs, will
compel more efficient cement use. Further, sustainability demands that we stop building
expensive temporary structures out of wood (the formwork). …Sustainability will also be
enhanced as we double or triple service life by using sound design details and materials
and construction practice.
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(cid:121) Mike Shydlowski: Nanotechnology used in the research and development of chemical
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changes for the concrete industry will be the widespread acceptance of the Prescription-to-
Performance (P2P)., …The use of byproducts and recycled concrete, pervious concrete, ..
(for) a“green”building product.
(cid:121) Bev Garnant: Green will be the flavor of the day. .. Concrete will also have a larger
market share in response to issues like global warming,terrorism,seismic concerns,and our
shrinking planet…robotic trowel machines, with pressure-sensitive devices to read the
concrete;other robotics for rebar placing and field bending and auto welding;
(cid:121) Peter H. Emmons: Castable materials will have sufficient tensile and compressive
ppropperttiies, elliimiinattiing sepparatte reiinfforcementt. .. CConcrette wiillll bbe a very green matteriiall
reducing effects on the environment, mostly driven by the reduced volumes needed to
build.
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(cid:121) James A. Repman: The cement industry will continue to strive to meet market
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waste,energy consumption,and the use of raw materials
(cid:121) Howard Kanare: Buildings will be smarter and will monitor themselves from right
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professionals and workers to a high level of knowledge about the materials and
methods they use
(cid:121)(cid:121) EEdd SSaauutteerr:: DDuurraabbiilliittyy, eenneerrggyy ppeerrffoorrmmaannccee, ssppeeeedd ooff ccoonnssttrruuccttiioonn, aanndd aaeesstthheettiiccss—
properties that all of us in the industry have been promoting for years—will help fuel
the growth… SCC and its derivatives will be the norm, not the exception.
(cid:121)(cid:121) JJaammeess MM. SShhiillssttoonnee, SSrr.:: MMiixxttuurree ddeessiiggnnss wwiillll bbee rreeccooggnniizzeedd aass ddiiffffeerreenntt ffrroomm
mixture proportions following Abrams' 1918 position …Proportions of concrete
mixtures will be automatically adjusted in the batch plant to replicate the mix design.
Portland cement concrete made 50 years from now will be a more sophisticated
product than it is today.
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