@article{cote_robinson_gabr_borden_2013, title={Performance-Cost Analysis of Stabilized Undercut Subgrades}, volume={139}, ISSN={["0733-9364"]}, DOI={10.1061/(asce)co.1943-7862.0000572}, abstractNote={AbstractAn approach for comparatively evaluating the performance cost of undercut subgrade stabilization measures is presented. The performance-cost analysis coupled results from laboratory cyclic load testing with material prices and estimated cost factors for stabilization alternatives. The study utilized data from 22 simulated undercut sections with different stabilization configurations over a soft subgrade with a California bearing ratio of approximately 2.0%. The computed cost factors are normalized with respect to the rut-depth magnitude and subgrade strength. Sections with lime-stabilized subgrade were the most economical with respect to initial and postrut repair cycles. Unreinforced aggregate based course (ABC) sections between 356 and 508 mm (14 and 20 in.) in thickness were economical during initial cycles. Sections with geosynthetic reinforcement showed that once enough rut depth is induced to mobilize the strength of the reinforcement, economical performance was comparable with other stabili...}, number={2}, journal={JOURNAL OF CONSTRUCTION ENGINEERING AND MANAGEMENT-ASCE}, publisher={American Society of Civil Engineers (ASCE)}, author={Cote, Benjamin and Robinson, Brent and Gabr, M. A. and Borden, Roy H.}, year={2013}, month={Feb}, pages={121–127} }
 @article{ahn_cote_robinson_gabr_borden_2009, title={Inverse Analysis of Plate Load Tests to Assess Subgrade Resilient Modulus}, volume={2101}, ISSN={["2169-4052"]}, DOI={10.3141/2101-13}, abstractNote={ Cyclic plate load testing is commonly used to investigate subgrade response under repetitive loads. Two frameworks for performing inverse analysis are described for backcalculating resilient moduli on the basis of measured key outputs. In the first approach, an elastic modulus is back-calculated in each selected domain; in the second, selected parameters in the resilient modulus model are estimated. The axisymmetric finite element model analysis results suggest that the second approach is more robust because it allows the modulus to be distributed in the selected domain. A series of sensitivity analyses was conducted with the second approach to illustrate how the assumed properties or model geometry affects the backcalculated parameters. Discrepancies between the back-calculated parameters and their known values were observed when the distance to the boundary–-that is, the radial distance from centerline to sidewall–-was not properly assigned. When backcalculating only selected parameters in the resilient modulus equation, it is necessary to assign the other parameters carefully (i.e., from laboratory tests or references). An example analysis shows the application of the proposed approach to an actual plate load test. }, number={2101}, journal={TRANSPORTATION RESEARCH RECORD}, publisher={Transportation Research Board}, author={Ahn, Jaehun and Cote, Benjamin M. and Robinson, Brent and Gabr, Mohammed A. and Borden, Roy H.}, year={2009}, pages={110–117} }