TY - GEN
T1 - Evaluation of compacted aggregate base course layers
AU - Titi, Hani H.
AU - Tabatabai, Habib
AU - Faheem, Ahmed
AU - Druckrey, Andrew
AU - Tutumluer, Erol
AU - Bautista, Emil
PY - 2014
Y1 - 2014
N2 - Field and laboratory tests were conducted on 10 projects during base course layer construction to evaluate the quality of the constructed base layers. Base aggregates were also collected from these sites for laboratory testing. The field-testing program consisted of the in-place density by the sand cone method, the dynamic cone penetration (DCP) test, the lightweight deflectometer (LWD) test, and the GeoGauge test. Laboratory tests conducted are the particle size analysis, the standard compaction test (AASHTO T 99), and the repeated load triaxial test (AASHTO T 307) for determining the resilient modulus. Analyses were conducted on field and laboratory test results. High spatial variability in field density and moisture content exists in base course layers under construction, as demonstrated by the relative compaction test results. High variability exists along the depth of base course layers, as demonstrated by the dynamic cone penetrometer test results and the estimated profile of California bearing ratio (CBR) along the depth of the investigated base layers. Spatial variability and nonuniformity were also demonstrated by the results of the lightweight deflectometer and GeoGauge, in which the layer modulus varies within a large range of values.
AB - Field and laboratory tests were conducted on 10 projects during base course layer construction to evaluate the quality of the constructed base layers. Base aggregates were also collected from these sites for laboratory testing. The field-testing program consisted of the in-place density by the sand cone method, the dynamic cone penetration (DCP) test, the lightweight deflectometer (LWD) test, and the GeoGauge test. Laboratory tests conducted are the particle size analysis, the standard compaction test (AASHTO T 99), and the repeated load triaxial test (AASHTO T 307) for determining the resilient modulus. Analyses were conducted on field and laboratory test results. High spatial variability in field density and moisture content exists in base course layers under construction, as demonstrated by the relative compaction test results. High variability exists along the depth of base course layers, as demonstrated by the dynamic cone penetrometer test results and the estimated profile of California bearing ratio (CBR) along the depth of the investigated base layers. Spatial variability and nonuniformity were also demonstrated by the results of the lightweight deflectometer and GeoGauge, in which the layer modulus varies within a large range of values.
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U2 - 10.1061/9780784413272.283
DO - 10.1061/9780784413272.283
M3 - Conference contribution
AN - SCOPUS:84906839482
SN - 9780784413272
T3 - Geotechnical Special Publication
SP - 2921
EP - 2930
BT - Geo-Congress 2014 Technical Papers
PB - American Society of Civil Engineers
T2 - 2014 Congress on Geo-Characterization and Modeling for Sustainability, Geo-Congress 2014
Y2 - 23 February 2014 through 26 February 2014
ER -