#Good Construction Practices – Plastering
Plaster has
important requirement in fresh and hardened state. Plaster is a thin layer
which is applied over masonry surface. It will give smooth, firm surface and
increase the building appearance. It provides damp-proof coat on the brick
masonry.
Plastering is
important to cover the poor workmanship and to protect wall from the
atmospheric differential.
Different methods
used to plaster different surfaces of concrete such as dense concrete,
low-weight concrete and mixed concrete.
Before start
plastering, concrete surface has to be free from paint, oil and dust so that
plaster can bond properly. The texture of concrete surface has to be rough
enough to hold the plaster. To obtain consistency slurry has to be applied over
the concrete surface and this mixture is prepared by mixing 1:0.5 ratio of
cement and coarse aggregates respectively.
Plaster Coat
which is applied over masonry work has to be 10-15 mm thick. If it is applied
in only 1 layer than it must be not
more than 10 to 15 mm. Curing is done continuously till 7 days.
Concrete surface
has to be checked contamination and necessary action to be taken.
Avoid heating the
building suddenly hence it increases the temperature.
Remove surface dust from dense concrete surfaces and apply a
proprietary bonding agent.
Where possible, use concrete mixes containing flint aggregate
for areas to be plastered.
Plastering should be done by firm pressure and once hardened
heck for the development of hollowness as the plaster dries out and when
heating the building for the first time.
To
be continued…
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Blog
written by
Shruti Doshi
Technical
Officer – Sanghi Cement & Blogger
Blog
Managed by
Nirav
Pandya
Digital
Marketing Officer – Sanghi Cement
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