In order to unify the instruments and equipment, test methods and operating requirements for on-site testing of engineering subgrade pavements and improve test quality, this procedure is specially formulated. This procedure is applicable to on-site investigation, construction quality inspection, handover acceptance and road condition assessment during use of highway subgrade pavements.
JTJ 059-1995 history
1995JTJ 059-1995 Field Test Methods of Subgrade and Pavement for Highway Engineering