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.
The purpose of
curing is to reduce the rate of heat loss of freshly placed concrete to
the
atmosphereandtominimizethetemperaturegradientacrossconcretecrosssection.
Also, curing
serves to reduceof the loss water from
freshly placed concrete to the atmosphere.
Ponding: This
method of thermal curing gets easily
affected by weather condition (cold wind).
Moreover, a large
amount of water used has to be disposed off the construction
sites after curing.
Polythene
sheet: This method of curing is based on the principle that
there is no flow of
air over the concrete surface and thereby no evaporation can take place
on top
of the freshly concreted surface by provision of polythene sheets.
However, it
suffers from the demerit that polythene
sheets can be easily blown off in windy
condition and the performance of curing would then be affected.
Also, this
method does not cater to the water
loss occuring due to self-desiccation.
Reference:200
Questions and
Answers on Practical Civil Engineering Works by
Vincent Chu
