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    Compressive Strength Prediction of CFRP Confined Concrete Using Data Mining Techniques

    TitleCompressive Strength Prediction of CFRP Confined Concrete Using Data Mining Techniques
    Publication TypePapers in International Journals
    Year of Publication2017
    AuthorsCamões A., and Martins F. F.
    Abstract

    During the last two decades, CFRP have been extensively used for repair and rehabilitation of existing structures as well as in new construction applications. For rehabilitation purposes CFRP are currently used to increase the load and the energy absorption capacities and also the shear strength of concrete columns. Thus, the effect of CFRP confinement on the strength and deformation capacity of concrete columns has been extensively studied. However, the majority of such studies consider empirical relationships based on correlation analysis due to the fact that until today there is no general law describing such a hugely complex phenomenon. Moreover, these studies have been focused on the performance of circular cross section columns and the data available for square or rectangular cross sections are still scarce. Therefore, the existing relationships may not be sufficiently accurate to provide satisfactory results. That is why intelligent models with the ability to learn from examples can and must be tested, trying to evaluate their accuracy for composite compressive strength prediction. In this study the forecasting of wrapped CFRP confined concrete strength was carried out using different Data Mining techniques to predict CFRP confined concrete compressive strength taking into account the specimens` cross section: circular or rectangular. Based on the results obtained, CFRP confined concrete compressive strength can be accurately predicted for circular cross sections using SVM with five and six input parameters without spending too much time. The results for rectangular sections were not as good as those obtained for circular sections. It seems that the prediction can only be obtained with reasonable accuracy for certain values of the lateral confinement coefficient due to less efficiency of lateral confinement for rectangular cross sections.

    JournalComputers and Concrete
    Volume19
    Issue3
    Pagination233-241
    Date Published2017-03-01
    PublisherTechno-Press
    ISSN1598-8198
    DOI10.12989/cac.2017.19.3.233
    URLhttp://koreascience.or.kr/article/ArticleFullRecord.jsp?cn=KJKHDQ_2017_v19n3_233
    KeywordsArtificial neural networks, CFRP confined concrete, Data Mining, Support vector machines
    RightsrestrictedAccess
    Peer reviewedyes
    Statuspublished
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    About CTAC

    The Centre for Territory, Environment and Construction (CTAC) is a research unit of the School of Engineering of University of Minho (UMinho), recognised by the “FCT – Fundação para a Ciência e Tecnologia” (Foundation for Science and Technology), associated to the Department of Civil Engineering (DEC), with whom it shares resources and namely human resources.

    Currently CTAC aggregates 25 researchers holding a PhD of which 20 are faculty professors of the Civil Engineering Department. Read more


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