Comparison of normal and lognormal frequency distribution for representing variations of concrete compressive strength

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The ACI 318-89 specifications and the ACI Committee 214 recommendations used to determine the strength of concrete are based on the assumption that variation of concrete strengths follow normal distribution. In this article the validity of this assumption is evaluated with the use of 100 different sets of data collected in the field. The objective of the study is to evaluate whether the number of low tests can be predicted accurately using normal or lognormal distribution rather than checking whether the distributions provide an overall good fit. The efficiency of the chi-square test in improving the accuracy of low test prediction is also studied. For purposes of comparison, the performance of lognormal distribution is also evaluated.

Original languageEnglish (US)
Pages (from-to)191-199
Number of pages9
JournalACI Materials Journal
Volume92
Issue number2
StatePublished - Mar 1 1995

Fingerprint

Compressive strength
Concretes
Normal distribution
Specifications

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

Cite this

@article{2e0fe8ff5a1b4dc29a804576d68801b7,
title = "Comparison of normal and lognormal frequency distribution for representing variations of concrete compressive strength",
abstract = "The ACI 318-89 specifications and the ACI Committee 214 recommendations used to determine the strength of concrete are based on the assumption that variation of concrete strengths follow normal distribution. In this article the validity of this assumption is evaluated with the use of 100 different sets of data collected in the field. The objective of the study is to evaluate whether the number of low tests can be predicted accurately using normal or lognormal distribution rather than checking whether the distributions provide an overall good fit. The efficiency of the chi-square test in improving the accuracy of low test prediction is also studied. For purposes of comparison, the performance of lognormal distribution is also evaluated.",
author = "P. Balaguru",
year = "1995",
month = "3",
day = "1",
language = "English (US)",
volume = "92",
pages = "191--199",
journal = "ACI Materials Journal",
issn = "0889-325X",
publisher = "American Concrete Institute",
number = "2",

}

TY - JOUR

T1 - Comparison of normal and lognormal frequency distribution for representing variations of concrete compressive strength

AU - Balaguru, P.

PY - 1995/3/1

Y1 - 1995/3/1

N2 - The ACI 318-89 specifications and the ACI Committee 214 recommendations used to determine the strength of concrete are based on the assumption that variation of concrete strengths follow normal distribution. In this article the validity of this assumption is evaluated with the use of 100 different sets of data collected in the field. The objective of the study is to evaluate whether the number of low tests can be predicted accurately using normal or lognormal distribution rather than checking whether the distributions provide an overall good fit. The efficiency of the chi-square test in improving the accuracy of low test prediction is also studied. For purposes of comparison, the performance of lognormal distribution is also evaluated.

AB - The ACI 318-89 specifications and the ACI Committee 214 recommendations used to determine the strength of concrete are based on the assumption that variation of concrete strengths follow normal distribution. In this article the validity of this assumption is evaluated with the use of 100 different sets of data collected in the field. The objective of the study is to evaluate whether the number of low tests can be predicted accurately using normal or lognormal distribution rather than checking whether the distributions provide an overall good fit. The efficiency of the chi-square test in improving the accuracy of low test prediction is also studied. For purposes of comparison, the performance of lognormal distribution is also evaluated.

UR - http://www.scopus.com/inward/record.url?scp=0029275072&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0029275072&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0029275072

VL - 92

SP - 191

EP - 199

JO - ACI Materials Journal

JF - ACI Materials Journal

SN - 0889-325X

IS - 2

ER -