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Concrete Durability And Protection
By Surface Treatments
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Overview
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The concept of durability is not
well defined. The term durability is often used to imply the possession of
qualities associated with long life. In some standards for concrete structures,
it is non quantitative and implies that design requirements are likely to be
exceeded for the design service life. In
the Arabian Gulf, the combination of high temperatures and the
predominance of Sulphate and Chloride in the natural environment regularly causes premature failure of reinforced concrete structures
well before their design lifetimes. Since the subsequent repair of the Sulphate
attack or Corrosion damaged concrete structures is both a costly and disruptive
process, surface treatments are used as part of either maintenance programme or
repair work. In both cases, they provide protection to the concrete by either arresting or
reducing the penetration of aggressive substances from the environment.
Numerous materials are available for this purpose and their inherent generic
properties differ considerably. Quite often this poses difficulties to practising
engineers when selecting a surface treatment for specific situation. In this
seminar an attempt will be made to define durability; outline the main stages
of durability planning, and to explain the protective aspects of various
surface treatments so that their selection can be made easier.
Who will benefit :
The objective of the seminar is to
enable Engineers, Architects, Building Managers and Consultants to specify and
use surface treatments on new and existing concrete for protective
purposes.