1. Concrete Control on a Major Project.
- Author
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RILEY, ORRIN and COOPER, STUART B.
- Abstract
The placement of $80 million of concrete by combinations of four of 52 agencies for the widen-ing of the New Jersey turnpike presented formid-able control problems. This paper discusses the control of durability, the turnpike's major concrete problem, by the use of strength, slump, and air con-tent parameters. These parameters are combined to measure the effect of slump and air entrapment on strength and uniformity of concrete as well as to rank the performance of various agencies in measuring these parameters. The coefficient of variation is used both to rank the agencies and to measure the uniformity of the concrete. Inter-relationships of parameters for determining the validity of both the test reports and the statistical analysis are also examined. Conclusions are reached concerning these parameter interrelation-ships, expectable coefficients of variations, and strength gain. [ABSTRACT FROM AUTHOR]
- Published
- 1971
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