Assessment of the concrete strength in existing buildings using a finite population approach

• Type: Article in International Scientific Journal
• Date: 2016

Authors

Nuno Pereira (Author) Other; Xavier Romão (Author) FEUP

Journal

Title: Construction and Building Materials

Vol. 110

Pages: 106-116

ISSN: 0950-0618

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 11 Citations

ISI Web of Science

Scopus - 16 Citations

INSPEC

Scientific classification

CORDIS: Technological sciences > Engineering > Civil engineering > Structural engineering

FOS: Engineering and technology > Civil engineering

Other information

Authenticus ID: P-00K-5QT

DOI: 10.1016/j.conbuildmat.2016.02.021

Abstract (EN): A framework is defined to evaluate the concrete compressive strength in existing buildings and control the uncertainty associated to the survey planning and to the concrete strength randomness. The framework proposes the discretization and disaggregation of the concrete strength in a building into finite populations of elements. Finite population statistics are used to correlate the number of tests performed in each population with the uncertainty about the mean and the coefficient of variation (CoV) of the concrete strength. A method to estimate the CoV of the concrete strength using the CoV of rebound hammer test results is also proposed to overcome the need for a high number of destructive tests. Results show that the proposed approach effectively controls the uncertainty in the estimate of the variability of the concrete strength in a population as well as the uncertainty in the estimate of the mean value of the concrete strength.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 11