Comparative Study of Vtm and Aashto Test Method for Cbr
نویسنده
چکیده
1.1 Background The California Bearing ratio (CBR) test has been widely used in pavement design since mid 1940’s. It is a relative measure of subgrade soil or base/subbase aggregate strength. The Virginia Department of Transportation (VDOT) has been using its own Virginia Test Method-8 (VTM-8) to perform CBR testing. On the other hand, private industry and other DOT’s are using AASHTO (American Association of State Highway and Transportation Officials) test method (T 193) to measure CBR. Although there are some differences between these two test procedures, both of them measure the same soil property.
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