Method for determining relative compactness of calcareous sand roadbed based on indoor soil test method

• Main Authors: YANG YUBAO, HE XIAOHUA, LI BAOJIAN, MA YUXIANG, WENG KAIWEN, YU HUAFENG, WANG XINFENG, JIANG ZHENQIANG, YANG MIN, CHEN JIEFENG, LYU GUOER, WANG KANGJIE
• Format: Patent
• Language: Chinese; English
• Published: 14.07.2023
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention relates to a method for determining the relative compactness of a calcareous sand roadbed based on an indoor geotechnical test. The method comprises the following steps: taking a calcareous sand soil sample on site, cleaning, drying, and carrying out a screening test to obtain a grain composition curve; the minimum dry density of the calcareous sand is measured, and a reasonable test value is selected through comparative analysis; determining the maximum dry density of the calcareous sand, and comparing, analyzing and selecting a reasonable test value; sampling on site by using a sampler, drying and weighing to obtain the dry density of the sand sample; and calculating through a formula to obtain the relative compactness. According to the method, a more reasonable test method and a more reasonable test instrument size are further defined, the relative compactness of the calcareous sand roadbed can be obtained more conveniently, reasonably and accurately, and the method is of great significance t