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- W654322772 abstract "The significant effect of the coarse-aggregate type (CAT) on the performance of concrete pavements has not been fully accounted for in the design-construction process. Among the main properties of concrete that vary with CAT are the modulus of elasticity, the coefficient of contraction and expansion, and tensile strength; these properties, in turn, influence the performance of concrete pavements. However, the selection of CAT is often left to the contractor without having evaluated the consequences of using an aggregate whose properties were not considered during the design stage. To illustrate the variation of CRCP performance with the 2 CATs most often used Texas (crushed limestone and siliceous river gravel), typical values of the physical properties of concrete produced with these 2 aggregates were selected from lab results. Three different approaches were used to estimate thickness equivalencies between limestone and siliceous river gravel CRCPs and are described. Results of theoretical analyses from this research indicate that, for the 2 CATs tested, generally less distress was observed in limestone CRCP. Findings developed could be used to determine approximate equivalent thicknesses for the 2 aggregate types considered here if there is no need for detailed analysis. By using recommended thickness equivalencies, the designer has enough information to estimate costs of construction of a CRCP section when permitted to employ either limestone or siliceous river gravel coarse aggregate." @default.
- W654322772 created "2016-06-24" @default.
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- W654322772 date "1985-01-01" @default.
- W654322772 modified "2023-09-24" @default.
- W654322772 title "EVALUATION OF THE EFFECT OF COARSE AGGREGATE TYPE ON CRCP THICKNESS" @default.
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