Prediction of Working Load Displacements Under Plate Loading Tests from Seismic Stiffness Measurements

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dc.creatorMyers, Michael L.en
dc.creatorStokoe, Kenneth H.en
dc.creatorAllen, John J.en
dc.date.accessioned2016-05-12T16:13:15Z
dc.date.available2016-05-12T16:13:15Z
dc.date.issued1998-10en
dc.description.abstractA study was conducted to evaluate the feasibility of compacting unbound base courses in thicker lifts than currently permitted by state departments of transportation (DOTs). At present, the majority of states allow a maximum lift thickness of 8 inches or less. This project constructed and tested full-scale test section using a variety of material types. Two test pads were constructed in an aggregate quarry in Texas utilizing crushed limestone. Three crushed granite test sections were built as part of a road widening project in Georgia, and two test pads were constructed of uncrushed and partially crushed gravel with loess fines at a gravel production facility near Memphis, Tennessee. Single-lift thicknesses varied from 6 inches to 21 inches. Moisture contents and densities were evaluated using the Nuclear Density Gauge (NDG). Nondestructive seismic testing, using the Spectral-Analysis-of Surface-Waves (SASW) technique, was used to evaluate stiffness profiles within the compacted lifts. Plate load tests were conducted on the surface of the crushed limestone test pads by means of the Rolling Dynamic Deflectometer specially modified for this fixed site application. Low frequency cyclic loads were applied to determine axial stiffness under transient working loads of varying magnitude. The base courses were tested at to moisture contents. The results were evaluated and compared with small strain seismic tests result. Strain amplitudes in the plate load tests led to a 5% to 25% reduction in measured stiffness as compared to the seismic results.en
dc.description.departmentCivil, Architectural, and Environmental Engineeringen
dc.description.sponsorshipAggregates Foundation for Technology, Research, and Education (AFTRE)en
dc.identifierdoi:10.15781/T2GN80en
dc.identifier.urihttp://hdl.handle.net/2152/35411en
dc.language.isoengen
dc.relation.ispartofICAR Technical Reportsen
dc.relation.ispartofseriesResearch Report (ICAR);501-3en
dc.rights.restrictionOpenen
dc.subjectBase course (Pavements)en
dc.subjectCompactionen
dc.subjectCrushed aggregatesen
dc.subjectCrushed limestoneen
dc.subjectDeflectometersen
dc.subjectDensity (Geology)en
dc.subjectEarthquake resistant designen
dc.subjectFeasibility analysisen
dc.subjectFines (Materials)en
dc.subjectGraniteen
dc.subjectGravelen
dc.subjectLoessen
dc.subjectMoisture contenten
dc.subjectNondestructive testsen
dc.subjectNuclear density gagesen
dc.subjectPlate bearing testen
dc.subjectRepeated loadsen
dc.subjectState departments of transportationen
dc.subjectStiffnessen
dc.titlePrediction of Working Load Displacements Under Plate Loading Tests from Seismic Stiffness Measurementsen
dc.typeTechnical reporten

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