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Title: Comparative evaluation of 10-lb sliding weight and sleeve-type manual compaction rammers for pavement design and quality control applications
Authors: Brabston, W. N. (William Newell)
Keywords: California Bearing Ratio (CBR)
Soil compaction
Soil stabilization
Laboratory Compaction
Optimum water content (OWC)
Publisher: Geotechnical Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Technical report (U.S. Army Engineer Waterways Experiment Station) ; GL-87-25.
Description: Technical Report
Abstract: A study was conducted to compare results of laboratory compaction and CBR tests performed with 10-lb sliding weight and sleeve-type compaction rammers on 14 soils and one cement stabilized soil . All materials were compacted using the CE-55 compaction effort and 6-in.-diam molds. Parameters compared were maximum dry density, optimum water content, and soaked CBR. Test data were statistically analyzed using linear regression analyses and significance tests for difference in means with Student's t-distribution . Results of the statistical analyses indicated that there was no significant difference between values of maximum dry density, optimum water content, and CBR obtained with either rammer. Operator observations did reveal difficulty of soil binding in the sleeve rammer in 8 of the 15 materials compacted. Recommendations include allowing use of the sleeve-type rammer in laboratory tests on soils for military pavement design.
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