In today’s market, it is imperative to be knowledgeable and have an edge over the competition. ACI members have it…they are engaged, informed, and stay up to date by taking advantage of benefits that ACI membership provides them.
Read more about membership
Become an ACI Member
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.
American Concrete Institute
38800 Country Club Dr.
Farmington Hills, MI
Feedback via Email
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: Computation of Required Average Strength (f 'cr) for a Specified Compressive Strength (f 'c)
Author(s): P. Balaguru and Ahmed Ezeldin
Publication: Special Publication
Appears on pages(s): 65-80
Keywords: acceptability; compressive strength; computer programs; concretes; flow charting; microcomputers; specifications; standard deviation.
Abstract:This report presents a computer program for the computation of required average strength, f'cr, based on the field strength test data. Based on the recent Code (ACI 318-83), four different cases--available data more than or equal to 30, available data for two consecutive sets more than or equal to 30, available data more than or equal to 15 but less than 30, and no field data available for comparable concrete--are identified and solved. The necessary equations and flow chart are presented so the reader more clearly understands the sequence of operations. Input/output data are explained using sample problems that illustrate the capability of the program to handle the different cases. The steps presented are written for one particular brand of computer, but the specialized commands are kept to a minimum so that the user can easily modify the program to other types of similar widely used computers.
Click here to become an online Journal subscriber