Concrete Roads
and Their Construction
År: 1920
Serie: Concrete Series
Forlag: Concrete Publications Limited
Sted: London
Sider: 197
UDK: 625.8 Con-gl.
Being a Description of the concrete Roads in the United Kingdom, together with a Summary of the Experience in this Form of Construction gained in Australia, Canada, New Zealand and the United States of America.
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IN OTHER COUNTRIES 113
was an expansion joint about | in. wide, consisting of prepared
asphalted felt.
This felt was laid against the end form, which was set truly
in line and vertical, and the concrete was carried up to it. complet-
ing one section. Then concrete was laid the other side of the form,
and after setting a short time the form was taken out and the
space filled with concrete. To ensure the concrete being exactly
t he same height on either side of the joint, a special trowel was used
with a groove to fit ov6r the felt filler which projected above the
pavement about | in.
After concreting followed the “ curing.”
I he day after the concrete was laid it was covered with 2 in.
of dirt and was sprinkled with water daily for ten days.
After about four weeks the dirt was removed, the joint fillers
Fig. 72.—View of finished road, Toronto-Hamilton highway.
trimmed to within a quarter of an inch of the pavement surface,
and the road opened to traffic.
At intervals during concreting l-cu.-ft. blocks were made and
left along the road to cure in the same manner as the pavement.
They were mai'ked according to their location and were afterwards
tested in the laboratory.
The pavement was not carried over culverts until after th©
fill had thoroughly subsided, and was always reinforced with
wire fabric or ordinary fencing-wire, to prevent cracks.
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