Title: Evaluating Concrete Potential and Performance

Author(s): J. M. Shilstone, Jr.

Publication: Symposium Paper

Volume: 107

Issue:

Appears on pages(s): 147-168

Keywords: aggregate gradation; computer programs; concretes; contractors; costs; evaluation; mix proportioning; performance; statistical analysis; workability; General

DOI: 10.14359/3653

Date: 6/1/1988

Abstract:
A contractor's construction requirements include different factors than are normally considered in concrete mix proportioning. Changes in materials and job conditions during construction can affect concrete and its ability to meet the contractor's construction needs. Computerized analysis of aggregate gradations and concrete mix proportions from project submittals help reveal potential workability problems that will impact pumping, economy, and finishing. Statistical analysis of concrete test results can reduce concrete cost by using the ACI Building Code to determine minimum average strength requirements. Ongoing analysis of changing materials and job conditions can predict and resolve problems rapidly and, therefore, minimize delays. Two computer programs, seeMIX and seeSTAT, are used to demonstrate how computer analysis can aid construction projects.