Onsite Use of Recycled Asphalt Pavement Materials and Geocells to ...
Onsite Use of Recycled Asphalt Pavement Materials and Geocells to ...
Onsite Use of Recycled Asphalt Pavement Materials and Geocells to ...
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Table 4.5 The average CBR values <strong>of</strong> subgrade <strong>and</strong> base from the vane shear <strong>and</strong> DCP tests<br />
Test method<br />
Vane Shear Test<br />
CBR Value (%)<br />
Subgrade at different locations Base Layer<br />
1 2 3 4 5 Average<br />
5.1 5.1 5.7 4.6 5.3 5.1<br />
DCP Test 5.6 9.9<br />
The calculated dynamic deformation moduli (Evd) <strong>of</strong> the subgrade, base, <strong>and</strong> HMA<br />
surface versus the size <strong>of</strong> the loading plate <strong>of</strong> the instrument from the LWD tests result are<br />
shown in figure 4.46. The test results show that the Evd values decreased from the HMA surface,<br />
the RAP base <strong>to</strong> the subgrade.<br />
Dynamic Modulus (MN/m 2 )<br />
160<br />
120<br />
80<br />
40<br />
0<br />
Subgrade Layer<br />
Base Layer<br />
HMA Layer<br />
5 10 15 20 25 30 35<br />
Size <strong>of</strong> loading plate (mm.)<br />
Figure 4.46 The calculated dynamic deformation modulus versus the size <strong>of</strong> loading plate for the<br />
30 cm thick unreinforced RAP base section<br />
85<br />
-