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Advances in Materials Science and Engineering
Volume 2017, Article ID 8251842, 12 pages
https://doi.org/10.1155/2017/8251842
Research Article

Correlation between the Compressive, Tensile Strength of Old Concrete under Marine Environment and Prediction of Long-Term Strength

1Civil Engineering Department, Logistical Engineering University, Chongqing 401311, China
2Training Department, Logistical Engineering University, Chongqing 401311, China

Correspondence should be addressed to Shiyong Jiang; moc.361@yihsgnaij

Received 22 March 2017; Accepted 3 May 2017; Published 25 May 2017

Academic Editor: Andrey E. Miroshnichenko

Copyright © 2017 Weilai Yao et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Compressive strength and tensile strength are important mechanical properties of concrete. The long-term strength of concrete under real service environment is an important parameter when evaluating existing buildings, which should also be properly considered in structural design. In this study, the relationship between compressive and splitting tensile strength of old concrete existing for long period under marine environment was investigated. At a deserted harbour, concrete cores samples were drilled by pairs in site. For each pair of samples, the two cores were drilled from the adjacent location and conducted to compressive, splitting tensile test, respectively. 48 compressive and splitting tensile strengths were finally obtained. From the test results, tensile strength presents general uptrend with compressive strength, and the two parameters are well positively correlated. Exponential model generally recommended by building codes or literatures is still capable of describing the relationship between compressive and tensile strength of old deteriorated concrete, when function parameters are properly determined. Based on statistical theory and the experimental result of this study, a method for predicting long-term tensile strength of concrete is developed and an example is given, which may provide a potential way to estimate long-term concrete strength under real marine environment.