Accession Number : AD0687369

Title :   FIELD SONISCOPE TESTS OF CONCRETE: 1953-1957 TESTS.

Descriptive Note : Technical memo.,

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS

Personal Author(s) : Roshore,E. C.

Report Date : MAR 1958

Pagination or Media Count : 19

Abstract : In 1957 pulse velocities were determined by soniscope testing at 160 stations in four dams, a lock, and in specimens at a field exposure station. The data obtained are to be used as a basis for evaluating subsequent changes in the concrete at the test locations and to aid in long-range evaluation of the significance of data obtained from soniscopic examination of concrete structures. The 1957 data were compared with similar data obtained in 1953 and 1955. Changes in the concrete measurable by pulse velocity have been minor at all but four stations, and permit no conclusions concerning the general trend of the concrete to increase or decrease significantly in quality. At four stations in the lock, pulse velocity increased by a significant amount; this is assumed to result from a filling up to the cracks in the concrete with an alkali-aggregate reaction product. (Author)

Descriptors :   (*DAMS, CONCRETE), (*CONCRETE, NONDESTRUCTIVE TESTING), ULTRASONIC RADIATION, STRUCTURES, VELOCITY, MIXTURES, CRACKS, BASES(CHEMISTRY), INSTRUMENTATION, MEASUREMENT

Subject Categories : Civil Engineering
      Construction Equipment, Materials & Supplies

Distribution Statement : APPROVED FOR PUBLIC RELEASE