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INSIDE THIS ISSUE
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FAST FACTS
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The Penetron system still allows
concrete to breathe, avoiding build up of vapor pressure
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| An intricate web of insoluble crystals forms in the presence of Penetron and H2O creating a permanent protective seal |
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Penetron Industry Newsletter
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November 2005
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Greetings,
Welcome to
another edition of the Penetron concrete waterproofing update. One of the
reasons our clients like the Penetron system is because it is so versatile. You can apply it by brush, spray, as an admixture
and as a dry shake,
which allows for creative problem
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solving. In the last newsletter, we saw how Penetron can be
used to waterproof a base slab from the positive side. This newsletter focuses
on another creative solution : using Penetron Admix to waterproof shotcrete (PAES)...
this method has already been used successfully in major tunnel projects in
Scandinavia and Italy and stands to become an industry standard....read on
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Company News - Penetron becomes sustaining member of ACI |
 As
a Sustaining Member of the American Concrete Institute (ACI), Penetron
continues to underline its dedication to improving the design, construction,
manufacture, and maintenance of concrete structures. Penetron chose to support
the ACI as it has been the premier source for information on concrete
construction since 1904 and continues to be a pioneer in all concrete-related
fields: research and development, structural design, architectural design,
construction, and product manufacture. Through a host of activities such as
continuing education, certification, seminars, publications and conventions, ACI plays an active and vital role in the concrete industry including the
development of codes and standards that affect each and every concrete project
across the United States. | | |
 Product Feature - Penetron
Admix Enhanced Shotcrete
(PAES) |
 Tunnel
waterproofing
is often done by using shotcrete structures
that lead the water from the rock into a subsurface draining system. The
main problem with this solution is making the shotcrete waterproof.
Water leakage is normally caused by cracks in the shotcrete, bad
workmanship and porous shotcrete. The traditional remedy was to spray
Penetron onto the shotcrete surface. While this is very efficient,
it is also labor intensive and hence expensive... In recent years, a
better solution was found; using Penetron Admix enhanced shotcrete!
Penetron Admix enhanced shotcrete (PAES) has been extensively tested by
accredited concrete laboratories. The test results show that PAES reached the maximum result in the
freeze/thaw test SS(EN)-137244 and reduced the depth of penetration of
water under pressure Norm SS EN-12390-8 from 21mm for the control
concrete to 7mm for PAES. The adhesion values of this shotcrete also
increases.
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| CASE STUDY -
TUNNEL LINING WATERPROOFING FOCUS |
BOTNIABANAN Railway project, Sweden
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(Click above to enlarge map)
The BOTNIABANAN Railway project, a 250 km long new railway with around 25km
of tunnels is under construction and located 550 - 800km north of Stockholm
along the Baltic Sea coast. The specifications of all products to be used o n
this
project are extremely demanding and stringently controlled, with
environmental considerations, zero pollution and ground water contamination
all high on the list of priorities. With Penetron's 10 year long experience in Sweden on waterproofing traffic tunnels and after several
years of testing for compliance with environmental standards, Penetron was
allowed to demonstrate its waterproofing abilities on this project.
Since then,
the tunnels treated with the traditional
Penetron spray-on method on this project up to November 2005 include
Askottberget 3.3km, Varvsberget 2km, Stranneberget 1.4km, Kalldalsberget
1.1km, Hjalta 1.2km and Oberget 0.5km. The railway is scheduled to start
operation in 2008.
 A
special Penetron Admix enhanced shotcrete (PAES) was developed in 2003 and
has been tested for 2 years on special sections of this project. The results
were carefully observed and evaluated, resulting in the use of PAES on a full scale section of the Askottberget tunnel.
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 Mezzaselva
tunnel in Bolzano, Italy |
The
engineers on this project
could not use a PVC membrane due to a lack of space, which opened the
door for PAES on this project. In
2004, Penetron Admix was mixed with the shotcrete at the batching plant,
after which PAES was applied with an average
t hickness of 10cm.
The
application was a complete success, with even a previously severely
leaking construction joint treated with the enhanced shotcrete ending up
completely dry.
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 Penetron Worldwide |
 Lutetian
Garden, Jinzhou, China |
This huge
development in Jinzhou, 4 hours north of Beijing in Liaoning Province is now the
top residential compound in the city.
All basement areas in the complex have been successfully treated with the
Penetron system. Abundant cracking had occured on the project prior to the
Penetron application, resulting in many leaks. All the leaks were stopped with
Peneplug and the cracks repaired with Penecrete mortar, after which the whole
underground structure was coated with Penetron. This job includes
the waterproofing of the entire underground carpark, connecting the two main
buildings, with the Penetron system. The Project was finished in 2002 with the
owner so pleased with the results that he insisted that his own penthouse
terrace in one of the buildings be waterproofed with Penetron rather than the
product specified for the exposed areas |
 House
of Rest, Zelehnogorsk, Russia |
This cathedral is
of immense importance in Russia as the last Russian Tzar Nicholas II and his
family are buried in St. Catherine Chapel (Ekaterininsky Predel) of this
Peteropavolovsk Cathedral in St. Petersburg.
This project
underwent a major repair and maintenance treatment in 1995. At that time, the
Penetron system was used for the protection and waterproofing of all above and
below grade masonry. |
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RCC Steeping Vats, Shirala, India
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Penetron Products were used to waterproof as well as protect the concrete surface
from chemical attack at M/s. Yashwant Glucose Co-op. Ltd.
At the plant, concrete vats are utilized for boiling maize grains prior to
recovery of starch from maize. The process involves temperatures of around 70
degrees Celsius
and induces SO2 gas which forms Sulphuric Acid (H2SO4) which
subsequently affects the concrete surface (pH 2.8 to 4)
The Penetron
System was used to treat the huge vats while Penecrete Morter was used to fill
the construction joints. Total treated area was about 1000 sqm and
300 linear meters of construction joints |
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Penetron products are currently available in over 60 countries. Should you wish to be contacted by a local representative and learn how Penetron can solve your concrete problems, please contact us. | | |
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www.penetron.com
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| Copyright ICS Penetron International Ltd. 45 Research Way, 203, East Setauket NY 11733 |
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