ABOUT THE INTERNATIONAL CONCRETE ABSTRACTS PORTAL

  • The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal

  


Title: Development of Prediction Relations From Compression Test Data Using Regression Analysis

Author(s): Chetan G. Date and Russel H. Schnnormeier

Publication: Symposium Paper

Volume: 101

Issue:

Appears on pages(s): 81-98

Keywords: acceptability; compression tests; compressive strength; computer programs; concretes; cylinders; quality control; regression analysis; specifications; statistical analysis.

DOI: 10.14359/3842

Date: 9/1/1987

Abstract:
The current trend of fast construction has necessitated the knowledge of the 28-day strength of the concrete cylinder at an early stage. This is achieved by using prediction relations to predict the 28-day strength based on the early test. This article presents a general method to develop the 28-day strength prediction models by analyzing the compression test data statistically and by using the linear regression analysis. A procedure is discussed to develop a computer program to perform the linear regression analysis. A method is also offered to obtain the nonlinear curves from the linear regression analysis program. Two applications of these prediction relations are discussed--prediction of 28-day strength and specification of early strength as an acceptance criterion. As an example, the prediction relations developed for the City of Phoenix are presented.