Reliability of the evaluation of concrete strength in structure with the number of specimen

Taichiro Kawanishi, Yoshihiro Masuda, Hitoshi Hamasaki

Research output: Contribution to journalArticle


This paper describes the influence of the core specimen's number on the sample mean and the standard deviation of concrete strength in structure. In this study, about 10 ∼ 40 core specimens collected from the three reinforced concrete structures at each floor, built at about 1955 ∼ 1965, are used. As a result, it is revealed that the mode of sample mean at three core specimens almost equals to the population mean, and that the mode of sample standard deviation at six core specimens almost equals to the population standard deviation.

Original languageEnglish
Pages (from-to)469-474
Number of pages6
JournalJournal of Structural and Construction Engineering
Issue number649
Publication statusPublished - 2010 Mar
Externally publishedYes



  • Core specimen
  • Sample mean
  • Sample standard deviation
  • Strength of concrete in structure

ASJC Scopus subject areas

  • Building and Construction
  • Architecture

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