Visualization of Shear Cracks in a Reinforced Concrete Beam using the Digital Image Correlation

Asdam Tambusay, Benny Suryanto, Priyo Suprobo

Abstract


A low-cost digital image correlation system is used to visualize the formation and propagation of concrete cracking in a reinforced concrete beam. The system employed comprises an ordinary digital camera, a remote image recording controller (a smartphone) and a freely-available, open-source image correlation software package Ncorr. In this paper, the application of this system is demonstrated to obtain a comprehensive time-lapse of longitudinal strain fields developing before and after the onset of shear cracking, thus allowing one to fully appreciate the mechanisms of shear failure in the beam. It is shown that the longitudinal strain fields obtained from the DIC system are in a good agreement with hand-drawn crack maps and that obtained from nonlinear finite element analysis.

Keywords


DIC; low-cost; Ncorr; reinforced concrete; shear, strain field.

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References


A. Uzel, E. C. Bentz, and M. P. Collins, “Design of indirectly loaded large footings for one-way shear,†ACI Structural Journal, vol. 113, no. 3, pp. 491–501, 2016.

M. P. Collins, E. C. Bentz, P. T. Quach, and G. T. Proestos, “The challenge of predicting the shear strength of very thick slabs,†ACI Structural Journal, vol. 37, no. 11, pp. 29-37, 2015.

M. P. Collins, E. C. Bentz and E. G. Sherwood, “Where is shear reinforcement required? Review of research results and design procedures,†ACI Structural Journal, vol. 105, no. 5, pp. 590–600, 2008.

L. Xie, E. C. Bentz, and M. P. Collins, “Influence of axial stress on shear response of reinforced concrete elements,†ACI Structural Journal, vol. 108, no. 6, pp. 745-754, 2011.

B. I. Bae, J. H. Chung, H. K. Choi, H. S. Jung, and C. S. Choi, “Experimental study on the cyclic behavior of steel fiber reinforced high strength concrete columns and evaluation of shear strength,†Engineering Structures, vol. 157, pp. 250-267, 2018.

K. Maekawa and X. An, “Shear failure and ductility of RC columns after yielding of main reinforcement,†Engineering Fracture Mechanics, vol. 65, no. 2, pp. 335–368, 2000.

Mörsch, “Der eisenbetonbau,†3rd ed., Engineering News Publishing Co., New York, 1908, (published in English as “Concrete-steel constructionâ€).

H. Kupfer, “Erweiterung der Morschschen Fachwerkanalogie mit Hilfe des Prinzips vom Minimum Formanderungarbeit,†(published in English as “Extension to the truss-analogyâ€).

L. Zhou, Z. Liu, and Z. He, “Elastic-to-plastic strut-and-tie model for deep beams,†Journal of Structural Engineering,†vol. 23, no. 4, pp. 04018007(1-14), 2018.

F. J. Vecchio and M. P. Collins, “The modified compression-field theory for reinforced concrete elements subjected to shear,†ACI Journal, vol. 83, no. 2, pp. 219-231, 1986.

T. D. Hrynyk and F. J. Vecchio, “Capturing out-of-plane shear failures in the analysis of reinforced concrete shells,†ASCE Journal of Structural Engineering, vol. 141, no.12, pp. 04015058, 2015.

C. H. Luu, Y. L. Mo, and T. T. C. Hsu, “Development of CSMM-based shell element for reinforced concrete structures,†Engineering Structures, vol. 132, no. 1, pp. 778–790, 2017.

M. D. Kotsovos, “Compressive force path concept: basis for reinforced concrete ultimate limit state design,†ACI Structural Journal, vol. 85, no. 1, pp. 68–75, 1988.

T. Zang, P. Visintin, and D. J. Oehlers, “Shear strength of RC beams without web reinforcement,†Australian Journal of Structural Engineering,†vol. 17, no. 1, pp. 87-96, 2016.

H. G. Kim, C. Y. Jeong, M. J. Kim, Y. J. Lee, J. H. Park, K. H. Kim, “Prediction of shear strength of reinforced concrete beams without shear reinforcement considering bond action of longitudinal reinforcements,†Advances in Structural Engineering, vol. 21, no. 1, pp. 30–45, 2018.

C. Hou, T. Nakamura, T. Iwanaga, J. Niwa, “Shear behavior of reinforced concrete and prestressed tapered beams without stirrups,†Journal of JSCE, vol. 5, no. 1, pp. 170–189, 2017.

B. Suryanto, K. Nagai, and K. Maekawa, “Smeared-crack modeling of R/ECC membranes incorporating an explicit shear transfer model,†Journal of Advanced Concrete Technology, vol. 8, no. 3, pp. 315-326, 2010.

E. C. Bentz and M. P. Collins., “Updating the ACI Shear Design Provisions,†Concrete International, vol. 39, no. 9, pp. 33–37, 2017.

J. Blaber, B. Adair, and A. Antoniou, “Ncorr: open-source 2D digital image correlation matlab software,†Experimental Mechanics, vol. 55, no. 6, pp. 1105–1122, 2015.

http://www.ncorr.com/download/ncorr_v1_2_1.zip (accessed 8 January 2017)

E. C. Bentz, “Sectional analysis of reinforced concrete members,†PhD Thesis, University of Toronto, Toronto, Canada, 2000.

B. Suryanto, R. Morgan, and A. L. Han, “Predicting the response of shear-critical reinforced concrete beams using Response-2000 and SNI 2847:2013,†Civil Engineering Dimension, vol. 18, no. 1, pp. 16–24, 2016.

BS EN 197-1: 2011, “Cement: composition, specifications, and conformity criteria for common cements,†British Standards Institution, London, UK, 2000.

B. Suryanto, A. Tambusay, and P. Suprobo, “Crack mapping on shear-critical reinforced concrete beams using an open source digital image correlation software,†Civil Engineering Dimension, vol. 19, no. 2, pp. 93–98, 2017.




DOI: http://dx.doi.org/10.18517/ijaseit.8.2.4847

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