Ultrasonic technology-based method for detecting and evaluating damage of subgrade soil materials in seasonal frozen regions
A technology of material damage and evaluation methods, which is applied in the analysis of solids, materials, and thermal analysis of materials using sonic/ultrasonic/infrasonic waves, which can solve the problem of inability to accurately and comprehensively assess the damage degree of soil damage mechanism.
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[0080] The preparation process of the test sample is as follows:
[0081] Select typical soil samples for damage detection and evaluation.
[0082] Carry out the roadbed soil engineering index test on the typical soil samples, and determine the soil samples that meet the roadbed soil engineering indexes; the roadbed soil engineering indexes include liquid limit, plastic limit, plasticity index, particle composition, moisture content and California bearing ratio Wait.
[0083] The optimal water content and maximum dry density of the soil samples that meet the roadbed soil engineering indicators are determined by heavy-duty compaction tests.
[0084] Obtain the degree of compaction required in actual subgrade soil engineering.
[0085] According to the degree of compaction, the optimum water content and the maximum dry density, the mass and amount of water needed to prepare the molded sample are calculated; the air-dried soil is a soil sample that meets the roadbed soil engine...
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