Cold in Place Rock Crushing and Stabilization of Northern Low ...

Berthelot, Gerbrandt, Safronetz, and Sparks. Page: 52180215521302105Dry Density (kg/m 3 )2080205520302005198019551930190518803 4 5 6 7 8 9 10Moisture Content Percent11Modified ProctorStandard ProctorFIGURE 4 Standard and Modified Proctor Moisture-Density of SDHT Highway 918-01 SubgradeIn situ boulders were sampled from Highway 918-01, were identified as to their type, and characterized withrespect to unconfined compressive strength. The rock type identification and unconfined compressive strengthmeasurements are summarized in Table 1 and illustrated in Figure 5. As seen in Table 1 and Figure 5, the in situboulders exhibited mean unconfined compressive strengths ranging from 121.1 MPa (24.0 ksi) for weathered granitoidto 358.1 MPa (51.9 ksi) for fine-grained metamorphic basalt.