Investigation into physical and mechanical properties of SRX-stabilised crushed rock using different compaction methods

ABSTRACT

This study investigates the physical and mechanical properties of Solution Road RomixSoilfix stabilized crushed rock material (SRX-SCR) compacted by quasi-static compaction method (QSCM) and vertical vibratory compaction method (VVCM). The maximum dry density, optimum water content, mineral aggregate gradation, compressive strength, and splitting strength were determined to assess the compaction effect of SRX-SCR. Results show that the maximum dry density and optimum water content of SRX-SCR subjected to VVCM are 1.03 and 0.80 times of the values obtained in the specimens that underwent QSCM. Compared with that before compacting, the water content in the specimen after molding by QSCM decreases by 0.4–0.8%, and the loss ratio reaches 9.3–17.0%. The water content in the specimen after compacting by VVCM decreases by 0.02–0.03%, and the loss ratio is only 0.6–0.8%. The mineral aggregate gradation of the specimens before and after compacting with QSCM significantly changes, but the changes are minimal in the VVCM specimens. The compressive strength, splitting strength, and resilient modulus of the VVCM specimens are higher than those of the QSCM specimens. The physical and mechanical properties of the laboratory produced SRX-SCR by VVCM is more consistent with the field measurements than the laboratory produced SRX-SCR by QSCM.

KEYWORDS:

• Solution Road RomixSoilfix stabilised crushed rock material
• quasi-static compaction method
• vertical vibration compaction method
• physical properties
• mechanical properties

Disclosure statement

No potential conflict of interest was reported by the authors.

Acknowledgement

This research is supported by the scientific project from Zhejiang Provincial Communication (No.2013H18), the National Natural Science Foundation of China under project No. 51408044, the China Postdoctoral Science Foundation under Project No. 2015T80999, and the Scientific Research of Central Colleges of China for Chang'an University under project No. 310821171113. The author gratefully acknowledges its financial support.

Additional information

Funding

This work was supported by the scientific project from Zhejiang Provincial Communication [grant number 2013H18]; the National Natural Science Foundation of China [project number 51408044]; the China Postdoctoral Science Foundation [project number 2015T80999]; the Scientific Research of Central Colleges of China for Chang’an University [grant number 310821171113]. The author gratefully acknowledges its financial support.