碳酸盐渍土冻融后超声波速检测试验的研究

在吉林省的农安地区，有大面积的碳酸盐渍土分布，是松嫩平原较严重的碳酸盐渍化地区。在该地区的碳酸盐渍土地基上的建筑物、道路、管网、水渠及桥梁等工程常常会受到冻融循环的影响，从而表现出腐蚀、不均匀沉降、开裂等不良现象。本次对农安地区碳酸盐渍土进行了现场取样，并对其进行了冻融循环试验，检测相应冻融后的碳酸盐渍土的超声波速后，分析含水率、含盐量及击实度对碳酸盐渍土超声波速变化的影响，探讨超声波速这种无损检测技术在碳酸盐渍土中运用的可行性。

The Study on Ultrasonic Velocity Inspection Test to Carbonate-saline Soil after Freeze-thaw

In Nong’an County of Jilin Province,there are large areas of carbonate-saline soil,which are the regions of serious salinization in Song-nen plain.Buildings,roads,pipelines,canals,bridges,and other pro-jects on the carbonate-saline soil in these areas are often affected by freeze-thaw cycles,thus showing corro-sion,uneven settlement,cracking and other undesirable phenomena.The security area of agricultural car-bonate-saline soil on-site sampling,and its freeze-thaw cycle test,after the detection of the corresponding carbonate-saline soil freezing and thawing after the ultrasonic velocity,an analysis to the influence of mois-ture content,salt content and the degree of compaction to the carbonate saline soil ultrasonic velocity change has been made,and the feasibility of non-destructive testing techniques such ultrasonic velocity in carbonate saline soil utilization has also been explored.