Vincent
T. H. Chu
is renowned internationally as
walking
encyclopedia of civil engineering.
Author of a number of
widely acclaimed
civil engineering books, Mr Chu is recipient of various reputed awards
including Young Engineer of
the Year Award 2008
(Merit) by the Hong
Kong
Institution of Engineers &Ombudsman’s
Award 2007 (under
complaint-related category). He is also listed
in
11th Edition of Marquis Who's
Who in Science and Engineering. ConcreteBasics.org
thanks him for his exemplary contribution to the cause of civil
engineers
around the world.
In
some cases, it may be due to the accumulation of dust and dirt.
However,
for the majority of suchphenomenon, it
is due to fungus or algae growth on concrete bridges. After rainfall,
the
bridge surface absorbs water and retains it for a certain period of
time. This provides a good habitat for fungus oralgae
to grow.
Moreover,
atmospheric pollutionandproximity ofplantsprovidenutrientsfortheirgrowth.Improvementin drainage details and application of
painting and coating to
bridgeshelp tosolve
this problem.
Reference:200
Questions and
Answers on Practical Civil Engineering Works by
Vincent Chu
