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http://dx.doi.org/10.12989/sem.2007.26.5.499

Elastic modulus in large concrete structures by a sequential hypothesis testing procedure applied to impulse method data  

Antonaci, Paola (Dipartimento di Ingegneria Strutturale e Geotecnica)
Bocca, Pietro G. (Dipartimento di Ingegneria Strutturale e Geotecnica)
Sellone, Fabrizio (Dipartimento di Elettronica, Politecnico di Torino)
Publication Information
Structural Engineering and Mechanics / v.26, no.5, 2007 , pp. 499-516 More about this Journal
Abstract
An experimental method denoted as Impulse Method is proposed as a cost-effective non-destructive technique for the on-site evaluation of concrete elastic modulus in existing structures: on the basis of Hertz's quasi-static theory of elastic impact and with the aid of a simple portable testing equipment, it makes it possible to collect series of local measurements of the elastic modulus in an easy way and in a very short time. A Hypothesis Testing procedure is developed in order to provide a statistical tool for processing the data collected by means of the Impulse Method and assessing the possible occurrence of significant variations in the elastic modulus without exceeding some prescribed error probabilities. It is based on a particular formulation of the renowned sequential probability ratio test and reveals to be optimal with respect to the error probabilities and the required number of observations, thus further improving the time-effectiveness of the Impulse Method. The results of an experimental investigation on different types of plain concrete prove the validity of the Impulse Method in estimating the unknown value of the elastic modulus and attest the effectiveness of the proposed Hypothesis Testing procedure in identifying significant variations in the elastic modulus.
Keywords
non-destruction testing; statistical data processing; hypothesis testing; concrete; elastic modulus;
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1 Alliche, A. (2004), 'Damage model for fatigue loading of concrete', Int. J. Fatigue, 26, 915-921   DOI   ScienceOn
2 Antonaci, P. and Bocca, P. (2004), 'On-site evaluation of concrete deformability characteristics: Two non-destructive methods compared', Scientific Israel-Technological Advantages, 6(3-4), 87-95
3 Antonaci, P. and Bocca, P. (2005), 'The pull-out method for the on-site estimation of the elastic modulus of concrete', J. Strain Anal. Eng. Design, 40(6), 505-511   DOI   ScienceOn
4 Bartlett, F.M. (1997), 'Precision of in-place concrete strengths predicted using core strength correction factors obtained by weighted regression analysis', Struct. Saf., 19(4), 397-410   DOI   ScienceOn
5 Bazant, Z.P. and Novak, D. (2003), 'Stochastic models for deformation and failure in quasibrittle structures: recent advances and new directions', in Computational Modelling of Concrete Structures, N. Bicanic, R. De Borst. H. Mang and G. Meschke, Ed., 583-598
6 Bocca, P. and Indelicato, F. (1988), 'Size effects and statistical problems of microcores in the re-evaluation of existing structures', in Re-Evaluation of Concrete Structures. Reliability and Load Carrying Capacity, S. Rostam and M.W. Braestrup, Ed., 463-472
7 Bocca, P., Lucchese, A., Munari, G. and Scavia, C. (1991), 'Il metodo ad impatti', in Danneggiamento e Diagnosi di Materiali e Struttture, P. Bocca and A. Carpinteri, Eds., 51-74, Pitagora
8 Collepardi, M. (1980), Scienza e Tecnologia del Calcestruzzo, Hoepli
9 Demir, F. (2005), 'A new way of prediction elastic modulus of normal and high strength concrete-fuzzy logic', Cement Concrete Res., 35, 1531-1538   DOI   ScienceOn
10 Emberson, N.K. and Mays, G.C. (1990), 'Signicance of property mismatch in the patch repair of structural concrete. Part 1: Properties of repair systems', Mag. Concrete Res., 42(152), 147-160   DOI
11 Emberson, N.K. and Mays, G.C. (1990), 'Signicance of property mismatch in the patch repair of structural concrete. Part 2: Axially loaded reinforced concrete members', Mag. Concrete Res., 42(152), 147-160   DOI
12 Gasparetto, A. and Giovagnoni, M. (2000), 'Measurement of the isotropic dynamic Young's modulus in a seismically excited cantilever beam using a laser sensor', J. Sound Vib., 231(5), 1339-1353
13 Johnson, K.L. (1987), Contact Mechanics, Cambridge University Press
14 Karadelis, J.N. (2000), 'A numerical model for the computation of concrete pavement moduli: A non-destructive testing and assessment method', NDT&E Int., 33, 77-84   DOI   ScienceOn
15 Lehmann, E.L. (1994), Testing Statistical Hypotheses, Chapman and Hall
16 Lemaitre, J. (1996), A Course on Damage Mechanics, Springer-Verlag
17 Morgan, D.R. (1996), 'Compatibility of concrete repair materials and systems', Constr. Build. Mater., 10(1), 57-67   DOI   ScienceOn
18 Park, Y.J. (1990), 'Fatigue of concrete under random loadings', J. Struct. Eng., ASCE, 116(11),3228-3235   DOI
19 Persson, B. (2004), 'Justification of federation international de Beton, fib, 2000 Model for elastic modulus of normal and high-performance concrete, HPC', Cement Concrete Res., 34, 651-655   DOI   ScienceOn
20 prEN 1992-1-1 (2003), 'Eurocode 2: Design of concrete structures - Part 1-1: General rules and rules for buildings'
21 Qixian, L. and Bungey, J.H. (1996), 'Using compression wave ultrasonic transducers to measure the velocity of surface waves and hence determine dynamic modulus of elasticity for concrete', Constr. Build. Mater., 10(4), 237-242   DOI   ScienceOn
22 Sellone, F. (2005), Fondamenti di Analisi Statistica dei Segnali, Politecnico di Torino-Class Notes
23 Sharif, A., Rahman, M.K., Al-Gahtani, A.S. and Hameeduddin, M. (2006), 'Behaviour of patch repair of axially loaded reinforced concrete beams', Cement Concrete Comp., 28, 734-741   DOI   ScienceOn
24 Tao, X. and Phillips, D.V. (2005), 'A simplified isotropic damage model for concrete under bi-axial stress states', Cement Concrete Comp., 27, 716-726   DOI   ScienceOn
25 Taliercio, A.L.E and Gobbi, E. (1996), 'Experimental investigation on the triaxial fatigue behaviour of plain concrete', Mag. Concrete Res., 48(176), 157-172   DOI   ScienceOn
26 Alves, M., Yu, J. and Jones, N. (2000), 'On the elastic modulus degradation in continuum damage mechanics', Comput. Struct., 76, 703-712   DOI   ScienceOn
27 Baluch, M.H., Al-Gadhib, A.H., Khan, A.R. and Shaalan, A. (2003), 'CDM model for residual strength of concrete under cyclic compression', Cement Concrete Comp., 25, 503-512   DOI   ScienceOn
28 Hassan, M., Burdet, O. and Favre, R. (1995), 'Ultrasonic measurements and static load tests in bridge evaluation', NDT&E Int., 28(6), 331-337   DOI   ScienceOn