Early-age concrete strength estimation based on piezoelectric sensor using artificial neural network

Junkyeong Kim; Ju-Won Kim; Seunghee Park

doi:10.1117/12.2044982

10 April 2014 Early-age concrete strength estimation based on piezoelectric sensor using artificial neural network

Junkyeong Kim, Ju-Won Kim, Seunghee Park

Proceedings Volume 9063, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2014; 906316 (2014) https://doi.org/10.1117/12.2044982
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2014, San Diego, California, United States

Abstract

Recently, novel methods to estimate the strength of concrete have been reported based on numerous NDT methods. Especially, electro-mechanical impedance technique using piezoelectric sensors are studied to estimate the strength of concrete. However, the previous research works could not provide the general information about the early-age strength important to manage the quality of concrete and/or the construction process. In order to estimate the early-age strength of concrete, the electro-mechanical impedance method and the artificial neural network(ANN) is utilized in this study. The electro-mechanical impedance varies with the mechanical properties of host structures. Because the strength development is most influential factor among the change of mechanical properties at early-age of curing, it is possible to estimate the strength of concrete by analyzing the change of E/M impedance. The strength of concrete is a complex function of several factors like mix proportion, temperature, elasticity, etc. Because of this, it is hard to mathematically derive equations about strength of concrete. The ANN can provide the solution about early-age strength of concrete without mathematical equations. To verify the proposed approach, a series of experimental studies are conducted. The impedance signals are measured using embedded piezoelectric sensors during curing process and the resonant frequency of impedance is extracted as a strength feature. The strength of concrete is calculated by regression of strength development curve obtained by destructive test. Then ANN model is established by trained using experimental results. Finally the ANN model is verified using impedance data of other sensors.

Citation Download Citation

Junkyeong Kim, Ju-Won Kim, and Seunghee Park "Early-age concrete strength estimation based on piezoelectric sensor using artificial neural network", Proc. SPIE 9063, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2014, 906316 (10 April 2014); https://doi.org/10.1117/12.2044982

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KEYWORDS

Sensors

Ferroelectric materials

Data modeling

Artificial neural networks

Error analysis

Signal processing

Capacitance

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