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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184
CONCRETE ROADS
Curing and Protection
18. Watering Surface.—The surface of the concrete shall be sprayed
with water as soon as it has sufficiently hardened to withstand
pitting, and shall be kept wet until covered as hereinafter provided.
The surface of the concrete shall be covered within 24 hours
with clay, earth or other easily obtained material, which shall be
kept thoroughly wetted for a period of at least 10 days.
When sunshine, a drying wind, or other conditions make it
desirable, in the opinion of the surveyor, the freshly laid concrete
shall be protected by canvas laid on a wooden framing or other
covering until set sufficiently to be watered and protected as
prescribed.
19. Opening to Traffic.—Under the most favourable weather condi-
tions the concrete road shall not be opened to traffic until at least
twenty-one days after it is laid, and when the weather is cool or
wet this period shall be increased for such additional time as may
be necessary in the opinion of the surveyor.
Where the road is constructed in two halves owing to the
impossibility of diverting the traffic, the traffic should not be
concentrated on to the first half which has been concreted until at
least thirty-five days after completion, or longer where weather
conditions make it desirable in the opinion of the surveyor.