Rick Yelton, Editor general de World of Concrete

1. What’s New in Concrete Repair
Nombre del relator

2. SOLID TO THE CORE

3. World of Concrete is owned by Informa and produced by
Informa Exhibitions.
• Informa is one of the world’s leading knowledge providers. We create and deliver highly
specialized information through publishing, events, training, market intelligence and
expertise, providing valuable knowledge to individuals, businesses and organizations
around the world.
• Delivers more than 150 trade and consumer exhibitions annually across the globe.
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5. WORLD OF CONCRETE LAS VEGAS
“ ”Show Floor
• WOC General
• Precast
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• Concrete Repair
• Demolition
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700,000 square feet of indoor
and outdoor exhibit space and
60,000 attendees
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6. WORLD OF CONCRETE
Who Attends WOC?
• Commercial Contractors
• Concrete Contractors
• Concrete Pumpers
• Engineers
• Masonry Contractors
• Dealers/Distributors
• Architects
• General Building Contractors
• Public Works Contractors
• Precast Producers
• Ready Mix Producers
• Highway/Paving & Bridge Contractors
Who Exhibits at WOC?
Original equipment manufacturers from around the world and exclusive
U.S. distributors of equipment, tools, products and services for the
commercial construction, concrete and masonry industries. WOC delivers
approximately 1,500 leading suppliers, including more than 320
international suppliers.

7. WORLD OF CONCRETE HAS 18 LEADING
CONCRETE ASSOCIATIONS COSPONSORS

8. World of
Concrete is a
participant of
the International
Buyer Program
• Algeria
• Argentina
• Bangladesh
• Bolivia
• Brazil
• Canada
• Chile
• China
• Colombia
• Costa Rica
• Democratic
Republic of Congo
• Dominican Republic
• New Zealand
• Nicaragua
• Nigeria
• Pakistan
• Philippines
• Qatar
• Russia
• Russia
• South Africa
(Botswana, Namibia, Malawi
Swaziland, Lesotha, Zambia)
• Tanzania
• Turkey
• UAE
WOC INTERNATIONAL
International Delegations
8,000+ International Attendees
• El Salvador
• Ethiopia
• Ghana
• Guinea
• Hungary
• India
• Iraq
• Kenya
• Korea
• Kuwait
• Mexico
• Morocco
• Nepal

9. WOC EUROPE / April 23-28, 2018 / Paris-Nord Villepinte / France
In Las Vegas, World of Concrete has become the leading event for the concrete industry in all of North
America. To meet the needs of the European concrete market and to tie in better with visitors’ demands
to have an overall view of the sector, S.E. INTERMAT and Informa Exhibitions have created World of
Concrete Europe (WOC Europe), one of the headline events at the INTERMAT.
WOC INTERNATIONAL
WOC ASIA/ December 4-6, 2017 / Shanghai New International Expo Centre/ Shanghai, China
In 2017, World of Concrete Asia will be launching in China, and will showcase a full range of products for
the concrete and masonry professional during World of Concrete Asia, China Floor Expo and China
Mortar Expo Brands. CFE and CME are long-standing exhibitions in the construction and building
materials industries in China.

10. WOC INTERNATIONAL EVENTS
Construct CANADA / November 29 – December 1, 2017 / Metro Toronto Convention Centre/
South Building / Toronto, Canada
The 29th Annual Construct Canada at the Metro Toronto Convention Centre will be held concurrently
with PM Expo, HomeBuilder & Renovator Expo and World of Concrete Pavilion in the South Building,
and IIDEXCanada in the North Building. All shows combined will create The Buildings Show. Visit 1,600+
exhibits, including 100+ international exhibitors, bringing the latest in design and construction
innovation in products, technologies, best practices and applications.
Buildex Vancouver / February 14-15, 2018 / Vancouver Convention Centre West / Vancouver, Canada
BUILDEX Vancouver is Western Canada’s largest tradeshow and conference for the Construction,
Renovation, Architecture, Interior Design and Property Management industries. With over 600 exhibits,
and more than 80 educational seminars BUILDEX attracts over 14,000 attendees annually.
Construction Expo 2017 / June 7-9, 2017 / Sao Paulo Expo/ Sao Paulo – SP/Brazil
World of Concrete, the largest international trade show dedicated to concrete in the United States has
established a history-making partnership with Sobratema. World of Concrete intends to draw to Brazil a
sample of the innovation and technology that exhibitors and attendees find on display at the event held
annually in Las Vegas. Three concrete-specific education sessions will be presented at Construction Expo.

11. Discussion Topics
• Historical Overview on How Concrete has
Changed the World
• Innovations in Inspection and Assessment
• Seismic Retrofits
• Pavement Repairs
• Emerging Repair Materials & Techniques

12. How are you involved in the concrete industry?

14. What’s New In Concrete Repair
Discussion Topic
Historical Overview on
How Concrete has
Changed the World

15. World of Concrete Trivia
Question #1
What is the World’s earliest example of concrete in use in
construction?

16. World of Concrete Trivia Question #1
Yiftahel is located in Northern Israel
about 15 miles east of Haifa and 5 miles
west of Nazareth. The archaeological
remains are embedded within the eastern
bank of Yiftahel Valley and are estimated
to cover at least 7.4 acres. This particular
site is likely the oldest permanent village
ever found, and it has a number of
concrete floors. So how long can the
service life of concrete be? How about
9800 years.

17. World of Concrete Trivia
Question #1
Researchers examined 2-inch-thick,
two-layer floor samples from a building
at Yiftahel and found compressive
strengths of 1-inch cubes to be 4900 psi
for the base layer and 6500 psi for the
combined base plus the finish coat.
Chemically, the samples consisted of
nearly pure calcium carbonate
(carbonated lime) and a small
percentage of silica, attributed to sand.
The base layer had porosity and crystal
sizes suggesting it rough compaction,
while the finish layer was dense with
very fine crystals, suggesting it had been
wet and well troweled.

18. World of Concrete Trivia Question #1
This larger section of floor
shows one of the various crack
patterns for the concrete floors
at Yiftahel. Subgrade under the
concrete was compacted with
smooth surfaces allowing for
movement in the concrete as
shrinkage occurred. When all
these cracks occurred will never
be known. They could have
developed at any time for the
past 10,000 years.

19. What’s New In Concrete Repair
Discussion Topic
Innovations in Inspection
and Assessment

20. Innovations in Inspection and Assessment
Topics GPR Inspection
Tendon Inspection
Chloride Inspection
Robotic Bridge Deck Inspection

21. Innovations in Inspection and Assessment
StructureScan Mini XT is ideal for locating
rebar, conduits, post-tension cables, and
voids. The Mini XT can help identify
structural elements, including pan deck
and concrete cover, and provides real
time determination of concrete slab
thickness. Additional accessories for the
StructureScan Mini XT include an
extension handle with control button
options, and the LineTrac XT. The LineTrac
XT adds the ability to detect AC power
and induced RF energy present in
conduits.
GPR Inspection Geophysical Survey Systems, Inc.

22. Innovations in Inspection and Assessment
Post-Tech® PT Corrosion Evaluation is a
non-destructive test method that can assist
engineers and building owners in the
assessment of cable conditions. Post-tech PT
Corrosion Evaluation is used to estimate the
degree of moisture within the cable sheath
which correlates to the risk of post-tension
corrosion.
Post-Tech PT Cable Break Detection utilizes
a magnetic field to detect cable breaks and
defects in post-tensioned and prestressed
concrete structures. After the cables are
magnetized, breaks are detected with
sensors and state-of-art software.
Tendon Inspection

23. Innovations in Inspection and Assessment
Tendon Inspection
3DR worked with the
construction team to use
Site Scan numerous
times, capturing imagery
that enabled them to
analyze the placement of
PT cables and rebar on
their map and overlay
their original blueprint
so they could see how
placements compared to
their initial plan:

24. Innovations in Inspection and Assessment
Tendon Inspection
The imagery from Site
Scan can also be
overlaid onto site
plans and shop
drawings, helping
avoid costly errors
and omissions in the
field.

25. Innovations in Inspection and Assessment
Chloride Inspection

26. Innovations in Inspection and Assessment
Giatec iCOR™ benefits from the
patented CEPRA technology that makes
it possible to estimate the corrosion
rate of rebar through a non-invasive
approach. This means that the need for
connecting the device to the rebar
(which is the case for other commercial
devices) is eliminated in iCOR™.
This makes iCOR™ the most
convenient corrosion rate
measurement device in the field as well
as offering an innovative research tool
for laboratory studies.
Chloride Inspection

27. Innovations in Inspection and Assessment
Chloride Inspection

28. Innovations in Inspection and Assessment
Bridge Decks

29. Innovations in Inspection and Assessment
Bridge Decks

30. Innovations in Inspection and Assessment
Bridge Decks
The RABIT™ bridge inspection
tool features two NDE
technologies that can identify
corrosive environments: electrical
resistivity and ground penetrating
radar (GPR). that discovers when
rebar starts to corrode and
concrete begins to crack and
disintegrate.

31. Innovations in Inspection and Assessment
Bridge Decks
Delamination is the beginning of division
and separation of layers of a concrete bridge
deck, weakening the bridge deck and making
it more susceptible to the environment and
traffic loads. The RABIT™ bridge deck
assessment tool’s impact echo system,
ground penetrating radar, high-resolution
imaging, and GPS capabilities precisely
locate delaminated areas to enable bridge
owners to make the right repair decisions.

32. What’s New In Concrete Repair
Seismic Retrofits

33. Seismic Retrofits
Discussion Topic
Soft Story Retrofits
Grouted Splice Sleeve (GSS) connectors

34. Seismic Retrofits
Grouted Splice Sleeve (GSS) Connectors
A repair technique for precast reinforced concrete bridge column-to-footing
and column-to-pier cap joints constructed with GSS connectors has been
developed. The repair utilizes prefabricated carbon fiber-reinforced polymer
(CFRP) shells, epoxy anchored headed mild steel rebar, and non-shrink
concrete to relocate the column plastic hinge. Prior to the repair, undamaged
column-to-footing and column-to-pier cap joints constructed with GSS
connectors were tested to failure under a quasi-static cyclic lateral load. The
as-built column plastic hinge region was subsequently repaired, and the
repaired joints were tested following the same cyclic loading protocol as the
as-built specimens. The plastic hinge was successfully relocated to the column
section adjacent to the repair. The repair method is simple and rapid and could
be used to repair bridges constructed with joints utilizing GSS connectors. The
method is general and it shows promise for retrofitting or repairing bridges
constructed with conventional cast-in-place joints as well.

35. Seismic Retrofits
Grouted Splice Sleeve (GSS) Connectors

36. Seismic Retrofits
Grouted Splice Sleeve (GSS) Connectors

37. Seismic Retrofits
Grouted Splice Sleeve (GSS) Connectors
Repair concrete: (a) before casting,
(b) vibrating, (c) finishing concrete
after casting, (d) wooden formwork
and weights

38. Seismic Retrofits
Grouted Splice Sleeve (GSS) Connectors
Seismic Retrofit of Spliced Sleeve Connections for Precast
Bridge Piers
Chris P. Pantelides
Professor
Department of Civil and Environmental Engineering
University of Utah
Salt Lake City, Utah, 84112
Phone: (801) 585-3991
Email: c.pantelides@utah.edu

39. Seismic Retrofits
Soft Story Retrofits

40. Seismic Retrofits
Soft Story Retrofits

41. Seismic Retrofits
Soft Story Retrofits

42. What’s New In Concrete Repair
Discussion Topic
Pavement Repairs

43. Pavement Repairs
Topics
Dowel Bar Repair
Fast Track Repairs

44. Pavement Repairs
Dowel Bar Repair
Dowel bar retrofit (DBR) is a load
transfer restoration process that
delivers a renewed level of structural
strength to Portland cement concrete
pavement (PCCP). The process involves
placing load transfer devices across
transverse joints and/or cracks to
prevent heavy faulting, pumping,
and/or corner breaks. The load transfer
mechanisms generally consist of two,
three, or four round dowel bars placed
parallel to the centerline in the primary
wheel paths.

45. Pavement Repairs
Dowel Bar Repair

46. Pavement Repairs
Dowel Bar Repair

47. Pavement Repairs
Workers are installing the
precast slab into the excavated
pavement areaFast Track Repairs

48. Pavement Repairs
Fast Track Repairs

49. Pavement Repairs
Fast Track Repairs

50. Pavement Repairs
Fast Track Repairs

51. Pavement Repairs
Fast Track Repairs
• Slots on the bottom protects grout
from de-Icing chemicals
• Dove tail slots provide resistance to
dowel pop-out
Dowel Grout Port
Bedding
Grout Port

52. Pavement Repairs
Fast Track Repairs

53. Discussion Topic
Emerging Repair Materials
& Techniques

54. Topics
Ultra-High Performance Concrete
Shot-Blasting Pavements
Repair Technician Certification
Emerging Repair Materials & Techniques

55. Emerging Repair Materials & Techniques
Ultra-High Performance Concrete
UHPC is a steel fiber-reinforced, cementitious-based material that provides exceptionally high mechanical and
durability related properties. The mechanical properties of UHPC allow for the redesign of connection details in
ways that simplify the detailing such that the overall bridge layout and the manner in which the bridge is
fabricated and constructed can be improved.

56. Emerging Repair Materials & Techniques
Shot-Blasting Pavements
This is a picture of a highway
in an area where there is
heavy rain throughout the
year. This stretch of highway
has one of the highest
accident rates in the state

57. Emerging Repair Materials & Techniques
Shot-Blasting Pavements

58. Emerging Repair Materials & Techniques
Shot-Blasting Pavements

59. Emerging Repair Materials & Techniques
Repair Technician Certification
Concrete Surface Repair Technician
(CSRT) Certification Program.
The new online certification program was developed based on industry demand and code
language. The new ACI 562-16, “Code Requirements for Evaluation, Repair, and
Rehabilitation of Concrete Buildings” outlines repair inspector qualifications for the
inspection of concrete repairs, and designates an individual who has been certified as an ICRI
Concrete Surface Repair Technician – Grade 1, as a qualified inspector.
The Concrete Surface Repair Technician Certification Program is a competency-based
program using current best practices for online training and evaluation. The Educational
component is presented and tested online while the Performance component is tested both
online and assessed by observable criteria.

60. Emerging Repair Materials & Techniques
Repair Technician Certification
Concrete Surface Repair Technician
(CSRT) Certification Program.
TIER 1
Tier 1, ICRI Concrete Surface Repair Technician Educational Program, consists of five (5) online training
modules. Those who successfully complete this portion of the program, including passing all five (5) online
training modules, will be awarded a Certificate of Achievement from ICRI.
TIER 2
The full certification program, Tier 2, ICRI Concrete Surface Repair Technician—Grade 1, consists of the
same five (5) online training modules in Tier 1, an online knowledge exam, and a performance exam (video
submission or live recorded). By passing the five (5) online training modules, the online knowledge exam,
and performance exam, an ICRI Concrete Surface Repair Technician—Grade 1 certification will be issued by
ICRI, and the individual will receive a certificate and wallet card. The individual can also be added to the
ICRI Certified Concrete Surface Repair Technician database on the ICRI website if desired.

61. What’s New in Concrete Repair
Thank You

62. For more information regarding the content in this presentation, send an email request to :
rick.yelton@informa.com
Please include the reference code WOCChile172 on the email.
What’s New in Concrete Repair