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Laboratory And Field Measured Moduli Of Unsurfaced Pavements On Weak Subgrade, Debakanta Mishra, Erol Tutumluer, Maziar Moaveni, Yuanjie Xiao
Laboratory And Field Measured Moduli Of Unsurfaced Pavements On Weak Subgrade, Debakanta Mishra, Erol Tutumluer, Maziar Moaveni, Yuanjie Xiao
Debakanta Mishra
This paper presents findings on the effectiveness of field modulus determinations and modulus based assessment of constructed pavement foundation geomaterials, i.e. subgrade soil and base/subbase unbound aggregate material. Full-scale unsurfaced pavement test sections were constructed on controlled strength weak subgrades and tested to failure for studying effects of aggregate quality on pavement performance. Differences in aggregate quality were assessed by changes in aggregate properties such as particle angularity, fines content and plasticity of fines. In-situ moduli of the constructed layers were measured using both light weight deflectometer (LWD) and GeoGaugeTM type field devices. Tests were conducted on the engineered …