Research Article

Detection Technology of Foamed Mixture Lightweight Soil Embankment Based on Ultrasonic Wave Transmission Method

Figure 21

First appearance of strain energy: (a) Sample 1, (b) Sample 2, (c) Sample 3, (d) Sample 4, (e) Sample 5, and (f) Sample 6. When the measuring distance arrives at 500 mm, the strain energy peak of the sample 1 becomes difficult to notice.