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Research Article
 

Material Evaluation by Using Imapct Echo Test



N. Mohamed Sutan and M.S. Jaafar
 
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ABSTRACT

Tests were performed to evaluated the feasibility of using Impact-Echo Method (IEM) in detecting defect and determining its depth during the early age concrete. Five Reinforced Concrete (RC) slabs grade 30 and 40 specimens respectively at day 3, 7, 14 and 28 with a fabricated void at a known location were used. The results obtained were analyzed to determine the accuracy of the method hence the effectiveness of it. Impact Echo method detect defects in specimens during early the age. Porosity has significant effect on the accuracy since lower porosity yield accurate determination of the depth of defect. Tests were also performed to examine the relationship between the porosity and strength of concrete at each stage with the accuracy of void depth detected. The test results indicate that the method can be used to assess the in-situ properties of concrete or for quality control on site. Impact Echo Test method showed better accuracy in detecting defect with stronger concrete with the accuracy ranging form 60.75-99.05% form day 3-28 (full strength) respectively.

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  How to cite this article:

N. Mohamed Sutan and M.S. Jaafar , 2002. Material Evaluation by Using Imapct Echo Test. Journal of Applied Sciences, 2: 892-894.

DOI: 10.3923/jas.2002.892.894

URL: https://scialert.net/abstract/?doi=jas.2002.892.894

REFERENCES
1:  John, B., 1982. The Testing of Concrete in Structures. Surrey University Press, London, pp: 35-59.

2:  Germann Instruments, 1999. Operation and Maintenance Manual for Docter Impact-Echo Testing. Version 3.0. Surrey University Press, England, pp: 35-59.

3:  Lin, Y. and M. Sansalone, 1992. Detecting flaws in concrete beams and columns using the impact-echo method. Mater. J. Am. Concrete Inst., 89: 394-405.
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4:  Neville, A.M., 1987. Concrete Technology, Longman Group Ltd., UK.

5:  Sansalone, M. and N.J. Carino, 1986. Impact-Echo: A Method for Flaw Detection in Concrete Using Transient Stress Waves. NBSIR, Gaithersburg, Maryland, pp: 222.

6:  Sansalone, M.J. and W.B. Street, 1997. Impact-Echo: Non Destructive Evaluation of Concrete and Masonry. Bulbriers Press, Ithaca, New York, USA.

7:  Sansalone, M. and N.J. Carino, 1998. Laboratory and Field Study of Impact-Echo Method for Flaw Detection in Concrete: Non-Destructive Testing of Concrete. ACI Special Publications, USA., pp: 1-20.

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