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In Hong Kong,
footway is normally designed with paving slabs/interlocking blocks
instead of
concrete because the extensive use of concrete in pavement is boring.
Moreover,
poor appearance will result in concrete pavement due to frequently
trench
openings for utility work. In addition, owing to the prolonged setting
and
curing time of concrete, the use of concrete pavement inevitably
generates
disturbance to the general public.
The pedestrian
loads are taken up through the following ways:
(i) Load carrying capacity of paving
slabs/interlocking blocks are derived from their individual strength;
(ii)
Pedestrian loads
are also supported
by interlocking forces
provided by friction transfer through the sand in
vertical joints (K. K. Tang & Robert P. Cooper (1986)).
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