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A new method of estimating equivalent specified compressive strength of existing concrete based on probabilistic modeling of pullout test

A new method of estimating equivalent specified compressive strength of existing concrete based... A new method of estimating the equivalent specified compressive strength of concrete was proposed in this study. The method involved using a general strength correlation of pullout test to determine the in-place concrete compressive strength and using the Monte Carlo simulation to estimate the equivalent specified compressive strength. The accuracy of this proposed new method was studied by comparing the estimation results with the example results presented in the appendices of the report ACI 228.1R. It was determined from this study that among various strength correlation models in the available literature the available Jensen and Braestrup Model best fitted the experimental data presented in ACI 228.1R, and this model could potentially be used as a general strength correlation. The proposed new method and the Alternative Method of ACI 228.1R appeared to give similar estimations of the equivalent specified compressive strength. However, the proposed new method appeared to be a simpler method as it eliminated the need of a job-specific correlation and avoided the complicated statistical analysis. The proposed new method saves time and cost for many projects in their preliminary phases, and could promote the use of NDT in the market. Some future research needs were proposed at the end of this study. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Building Pathology and Rehabilitation Springer Journals

A new method of estimating equivalent specified compressive strength of existing concrete based on probabilistic modeling of pullout test

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References (28)

Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2022
ISSN
2365-3159
eISSN
2365-3167
DOI
10.1007/s41024-022-00217-7
Publisher site
See Article on Publisher Site

Abstract

A new method of estimating the equivalent specified compressive strength of concrete was proposed in this study. The method involved using a general strength correlation of pullout test to determine the in-place concrete compressive strength and using the Monte Carlo simulation to estimate the equivalent specified compressive strength. The accuracy of this proposed new method was studied by comparing the estimation results with the example results presented in the appendices of the report ACI 228.1R. It was determined from this study that among various strength correlation models in the available literature the available Jensen and Braestrup Model best fitted the experimental data presented in ACI 228.1R, and this model could potentially be used as a general strength correlation. The proposed new method and the Alternative Method of ACI 228.1R appeared to give similar estimations of the equivalent specified compressive strength. However, the proposed new method appeared to be a simpler method as it eliminated the need of a job-specific correlation and avoided the complicated statistical analysis. The proposed new method saves time and cost for many projects in their preliminary phases, and could promote the use of NDT in the market. Some future research needs were proposed at the end of this study.

Journal

Journal of Building Pathology and Rehabilitation – Springer Journals

Published: Dec 1, 2022

Keywords: In-place concrete strength; Equivalent specified compressive strength; Pullout test; Probabilistic modeling; Monte Carlo simulation

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