Properties of High-Density Concrete Made with Iron Aggregate
By HAROLD S. DAVIS, t FREDERICK L. BROWNEJ
HARRY C. WITTER§
Data are presented on the physical properties of several types of mortar
and concrete made with iron-bearing aggregate for use in radiation shields.
Heavy aggregates used in this investigation included steel punchings, fine
steel shot, ferrophosphorus, magnetite, and limonite.
Concrete made with natural heavy aggregates had densities of from 185
to 225 lb per cu ft. One type of concrete made with steel punchings and
limonite weighed 273 lb per cu ft. Both the prepacked method and conventional
methods were used for fabricating concrete specimens. The results
of tests performed on several types of heavy mortars made with fine sand are
also reported. Data obtained at elevated temperatures are presented, as well
as data obtained from standard tests on aggregate, concrete, and mortar.
The data and experience obtained during this investigation demonstrate that
concrete suitable for radiation shields can be made with iron-bearing aggregates
by either the prepacked or conventional methods of construction.
Sender : hessi