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44
CONSTRUCTION WORLD
NOVEMBER
2016
ADMIXTURES
ISO 9001 is a quality
Management System which
provides the infrastructure,
procedures, processes and
resources needed to help
organisations both monitor and
improve their performance to
drive efficiencies, client service
and product excellence.
Sika Head Office in KZN acquired their
ISO 9001 standard in 1995, and subse-
quently adopted the ISO 14001 in 2006
and OHSAS 18001 standards in 2011.
“All Sika factories are required to be ISO 9001 &
ISO 14001 certified as a minimum. Being certified
and complying with the requirements of the stan-
dards enabled us to operate at and hold ourselves
accountable to a higher quality operational and
performance level. It gives us and our customers
the additional confidence that we are working
towards international levels and standards,” says
Paul Adams, SIKA SA managing director.
No new standards were needed to be adapted
in the audit. Having an existing system at Sika
Head Office helped the process of extending the
certification to the GP branch as they worked from
the structure and framework in place already.
"It is important that the GP branch be audited
regularly (the certification body does surveillance
audits annually and our certificates are valid for
a three year period) to ensure compliance with
the requirements of the standard as well as to
identify gaps in the system and areas for continual
improvement, Adams added.
Luis Ferreira, business development
manager: exports for the Chryso
Southern Africa Group – the holding
company of a.b.e. – says a.b.e.
durakote WB was applied in four coats to the
40 metre high silos of the leading Mauritian
flour producer, Les Moulins de la Concorde
Ltée. The towering silos, with a collective
storage capacity of 40 000 tonnes, form a
focal point and landmark of the Port Louis
harbour. Adjcent to the concrete silos on Quay
D is the Les Moulins de la Concorde mill to
which the wheat is discharged from the silos
for processing.
Ferreira says a.b.e. duracote WB (water-
based) is a high performance flexible aliphatic
acrylic polymer coating with high crack
bridging properties. The system comprises
duracote WB primer, a powerful penetrating
organic carrier coat that incorporates acrylic
resin and silane-siloxane molecules that form
a reactive hydrophobic primer barrier coat that
chemically bonds to the substrate.
duracote WB itself is a pure aliphatic
acrylic polymer protective topcoat with high
elastomeric crack bridging qualities – the
coating is capable of bridging a 0,3 mm
dynamic crack at 20 degrees Celsius. The
system forms a durable, decorative, UV-stable
protective coating that inhibits the passage of
water and aggressive water-borne corrosive
contaminants from entering the pores of the
concrete silos.
“duracote WB is particularly suited to
structures exposed to harsh, aggressive atmos-
OCEAN-EXPOSED
A special protective coating system supplied by a.b.e.
Construction Chemicals was used for the repair of 16
massive wheat silos in the harbour of Port Louis, Mauritius.
pheric conditions and was the ideal choice for
the repair and waterproofing of the marine-ex-
posed silos,” Ferreira stated.
He said four coats of duracote WB was
applied to achieve a 400 micron dry thickness
on the silos. “Normally two coats offer
sufficient protection but because of the silos
being right next to the ocean, an additional
two coats were specified and applied for
maximum protection,” he added.
Some of the other benefits of a.b.e.’s
durakote WB system include:
• Forms a permanent barrier against the
ingress of carbon dioxide, chloride ions,
oxygen and water – the main contributors
to corrosion;
• Tough, durable, weather-resistant and
UV-stable decorative coating suited to the
most adverse conditions;
• durakote WB coating system has the ability
to breathe – and this allows water vapour
to diffuse from the concrete pore structure;
• Improved dirt pick-up resistance;
• Low sensitivity to mould and algae growth;
and
• Strong barrier to efflorescence.
“Finally, the system in addition to its protec-
tive qualities also provided a highly decorative
finish so the refurbished silos are now an
attractive feature in a harbour that receives
dozens of luxury cruise liners every year,”
Ferreira added.
Work in progress applying a.b.e. protection near the top of the towering wheat silos in the Port Louis
harbour, and the fully repaired structures which are a focal point of the ocean gateway to Mauritius.
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wheat silosprotected
ISO 9001
FOR GAUTENG
FACTORY
>