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做击实试验中的ρd～w曲线,由于种种因素的影响,曲线往往不十分理想。该试验虽然简单,但工序多、流程长,人为因素影响较多,跑跳点现象常见。由于土体的复杂性,配水区间不易掌握。本文根据近年来实践经验,阐述了击实试验中的几点措施,其方法主要从配水、击实这两个关键环节入手,采用“观察加称量法”控制配水区间,并用此法检验击实效果,皆可不必称风干含水量,对提高击实试验的成功率很有帮助。
The ρd～w curve in the compaction test is often not ideal because of various factors. Although the experiment is simple, it has many processes and long processes. There are many human factors, and the phenomenon of running and jumping is common. Due to the complexity of the soil, the water distribution interval is not easy to grasp. Based on the practical experience in recent years, this article describes several measures in the compaction test. The method is mainly based on the two key links of water distribution and compaction. The “observed and weighed method” is used to control the distribution interval, and this method is used to check the impact. The actual effect can not be called air-drying water content, which is helpful for improving the success rate of compaction test.