Experimental Study on Structural Mechanics of Asphalt Pavement by Digital Speckle Correlation Methods

Table 3

Vertical displacement of structure interlayer.

Working condition	Bottom of the upper layer		Bottom of the middle layer		Bottom of the lower layer
Unit: mm	Top of the middle layer		Top of the lower layer		Top of the cement-stabilized layer
Standard load	0.2670	0.2420	0.2319	0.2293	0.2274	0.2607
	−9.36%		−1.12%		14.65%
50% overload	0.309	0.251	0.238	0.226	0.218	0.279
	−18.85%		−5.40%		27.87%
100% overload	0.395	0.303	0.291	0.261	0.251	0.335
	−23.30%		−10.35%		33.27%