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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160
CONCRETE ROADS
Fig. 108.—Victoria Mixer with Bucket Distributor.
Tamping and Finishing the Concrete
In the United States, a self-propelling template and tamper (see
Fig. 115) is sometimes used. This is now being introduced into the
United Kingdom by the Allied Machinery Co., Ltd. At the front of
the machine is a strike-off board which levels up the concrete, leaving
the surface about half an inch high, a power-driven tamping-bar
then consolidates the concrete, and a power-driven belt finisher at
the rear of the machine smooths up the surface to a trowel finish.
The surface of a concrete road may be finished with a wooden
float or trowel applied by hand, the workman kneeling or lying on
a suitable “bridge."’
Fig. 109.-—Rex Paver.