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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > 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.
Title: Multivariate Statistical Methods in Evaluation of Concrete and Aggregate Properties
Author(s): Peter P. Hudec
Publication: Special Publication
Appears on pages(s): 531-550
Keywords: Aggregates; concretes; specifications; statistics; tests.
Abstract:Personal computers (PCs) now adorn almost every office desktop and lab counter. A variety of programs are available to handle and manage data of various types. Statistical manipulation, once considered to be an arcane art of mathematicians, is now available to anyone with the inclination to learn and use it. Simple univariate statistical analyses such as mean, standard deviation, and bivariate regression, and correlation etc. are in widespread use in concrete technology. However, they only give results concerning at most two variables at a time. In the real world, the properties such as strength, frost resistance, alkali reactivity, etc depend on several mutually dependent variables. For instance, multivariate statistical techniques such as cluster analysis can group all aggregates with similar properties; factor analysis can discern what combination of tests best describe a desired property of concrete; and stepwise regression analysis can be used to predict serviceability (projected life) of concrete or aggregate based on several standard tests. Examples of the above statistical techniques are presented in a non-technical format, based on research into concrete aggregate properties as related to their service record.
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