›› 2009, Vol. 30 ›› Issue (S1): 69-74.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experimental research on correlation of acoustic parameters and stress of modified concrete

LIN Jun-zhi 1, 2, ZHAO Ming-jie2, YANG Hong-wu3   

  1. 1. College of Civil Engineering, Chongqing University, Chongqing 400045, China; 2. School of River & Ocean Engineering, Chongqing Jiaotong University ; Chongqing 400074, China; 3. Shandong Harbor Engineering Co., Ltd., Rizhao 276826, China
  • Received:2009-04-20 Online:2009-08-10 Published:2011-03-16

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Abstract:

Ultrasonic tests of 21 polymer modified concrete specimens under different loading conditions are completed; and the variations of ultrasonic velocity, weighted spectral area with stress in polymer modified concrete are researched. The research shows that pure acrylic emulsion and styrene-acrylate emulsion can increase the sensitivity of acoustic parameters with stress in concrete; organosilicon mortar naterproof agent and polyvinyl acetate can attenuate the sensitivity of acoustic parameters with stress; and acrylate copolymer emulsion has no effect on the sensitivity of acoustic parameters with stress.

Key words: polymer emulsion, concrete, ultrasonic velocity, weighted spectral area, stress

CLC Number: 

  • TV 698.15
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