TESTING OF CEMENT MORTAR AND CONCRETE BY MEANS OF ULTRASONIC IMPULSE METHOD

LAB INVESTIGATIONS WERE CARRIED OUT WITH SPECIMENS OF CEMENT CUBES WITH NORMAL CONSISTENCY. THE SPEED OF THE LONGITUDINAL WAVES INCREASES WITH THE TIME OF HARDENING AND HAS THE SAME NATURE AS THE INCREASE OF THE COMPRESSIVE STRENGTH OF THE SPECIMENS WAS 320 KG./CMSQ. THE EFFECT OF TEMPERATURE AND CURING CONDITIONS WAS ALSO EXAMINED. THE SPEED OF THE LONGITUDINAL WAVES IN THE SPECIMENS CURED UNDER LABORATORY CONDITIONS /RELATIVE MOISTURE 50-60 PERCENT, 20 DEGREES /INCREASE STEADILY WITH THE TIME OF HARDENING AND REFLECTS WELL THE INCREASE IN THE STRENGTH OF CONCRETE. THE SPEED IN SPECIMENS CURED UNDER ATMOSPHERIC CONDITIONS VARIES RATHER IRREGULARLY, DEPENDING ON THE AVERAGE AIR TEMP., BUT IT FULLY CORRESPONDS TO THE INCREASE OF STRENGTH MEASURED MECHANICALLY. PRELIMINARY ULTRASONIC TESTS ON SPECIMENS CURED IN DRINKING WATER OR IN A 5 PERCENT SOLUTION OF SODIUM SULFATE PROVED THE UTILITY OF THE ULTRASONIC IMPULSE METHOD ALSO IN THIS CASE. /AUTHOR/

  • Supplemental Notes:
    • No 26, pp 410-413
  • Corporate Authors:

    Zeszyty Probl Nauki Polsk /Poland

    ,    
  • Authors:
    • Simeonov, J
  • Publication Date: 1965

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Filing Info

  • Accession Number: 00212370
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 5 1994 12:00AM