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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: Analysis of In-Place Test Data With Spreadsheet Software
Author(s): Nicholas J. Carino and William C. Stone
Publication: Special Publication
Appears on pages(s): 1-26
Keywords: compressive strength; computer programs; concrete construction; microcomputers; pullout tests; safety; statistical analysis.
Abstract:In-place testing offers the contractor an alternative to testing field-cured cylinders for assessing concrete strength during critical phases of construction. A relationship between cylinder compressive strength and the quantity measured by in-place tests is needed to use these methods; this requires statistical analysis of test data. The personal computer and "electronic spreadsheet" software provide a cost-effective means of performing such analyses. Available spreadsheet software can be used to perform the required calculations automatically, thus providing the user with the benefits of automated computation without requiring knowledge of a scientific computing language. Data from a study of the pullout test method are used to illustrate the use of spreadsheet software to perform linear regression and determine the required correlation relationship. In addition, a simplified technique is proposed for using the results of in-place tests to make a reliable estimate of the characteristic strength of structural concrete. The in-place characteristic strength permits an evaluation of structural safety during construction.
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