%0 Journal Article
%T Estimating the Distribution of Air Voids in Concrete
%A Beasman L.E.
%A McCuen R.H.
%J Civil Engineering Dimension
%D 2011
%I Petra Christian University
%X Chord length measurements are used to estimate the volumetric distribution of air voids within hardened concrete samples. The accuracy of the Linear-Traverse method is questionable because chord lengths do not directly represent the actual volumes of the air voids. Using computer simulation, randomly generated concrete samples were analyzed using the Linear-Traverse method to compute the distribution of air voids, the chord length gradation curve, the chord length-to-traverse ratio, and the air void volume gradation curve. The current chord-length approach significantly underestimated the air void content. A method that estimates that air void gradation curve from the chord length gradation curve is presented. The computer simulation results are supported by a conceptual analysis. To obtain the most accurate estimate of the air void content, computer analyses showed that at least 15 traverse lines should be regularly spaced on the concrete sample.
%K Concrete
%K air voids
%K gradation curves
%K simulation
%K linear-traverse method.
%U http://puslit2.petra.ac.id/ejournal/index.php/civ/article/view/18103