Cement And Concrete Control San Francisco-Oakland Bay Bridge
Thomas E. Stanton, Jr.
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Describes the background of special cement specifications for the San Francisco- akland Bay Bridge in which moderate sulfate resistant (sea water) cement was used as a standard and a portland pozzolanic (high silica) type in portions of the structure. Unique methods are described for control of (I) quality and uniformity of aggregates, (2) automatic batching, (3) transportation, and (4) placement to secure uniform concrete and uninterrupted progress of work. The author also describes design of the mix and methods of depositing concrete under water by specially designed buckets and in a tun-nel by pumping.