ISSN: 0149-6115
Published Online: 19 February 2009
Page Count: 7

An Improved Rotating Cylinder Test Design for Laboratory Measurement of Erosion in Clayey Soils

Lim, Seok San
Research student,Samsung Corporation, Civil Division,Gyonggi-Do,

Khalili, Nasser
Professor,School of Civil and Environmental Engineering, The University of New South Wales,

(Received 19 September 2007; accepted 17 January 2009)

Abstract

An improved Rotating Cylinder Test (RCT) device is designed and manufactured for laboratory measurement of erosion in clay soils. The improved device provides for a rapid and practical procedure for sample assembly and allows testing cylindrical samples 100 mm in height and 100 mm in diameter. It also provides the ability for direct and accurate measurement of hydraulic shear stress and erosion rate. The improved RCT apparatus has been calibrated using dummy samples to isolate the torque applied to the soil surface. A control program has been developed to operate the RCT and record test data for analysis. Sample preparation for compacted clay soils has been discussed for both saturated and unsaturated states. Typical erosion test results are presented for a clay soil.

Keywords:
soil erosion, erosion measurement, Rotating Cylinder Test, hydraulic shear stress, erosion rate, unsaturated soil, compacted clay

Paper ID: GTJ101448
DOI: 10.1520/GTJ101448
ASTM International is a member of CrossRef.