Evaluation of Low-Quality Recycled Concrete Pavement Aggregates for Subgrade Soil Stabilization [Technical Summary]
-
2024-07-01
-
Details:
-
Creators:
-
Corporate Creators:
-
Corporate Contributors:
-
Subject/TRT Terms:
-
Publication/ Report Number:
-
Resource Type:
-
Geographical Coverage:
-
Edition:Technical Summary
-
Corporate Publisher:
-
Abstract:The primary objective of this study was to investigate the suitability of D-cracked RCA for subgrade stabilization for hot-mix asphalt (HMA) pavements. This research also evaluated the strength, stiffness, and shrinkage potential of clay subgrade beneath HMA pavements stabilized using D-cracked RCA and various stabilizers. The selected stabilizers were lime, Class C fly ash, and a combination of portland cement and Class C fly ash. Potential soil improvement was assessed via compaction, unconfined compressive strength (UCS), California Bearing Ratio (CBR), and linear shrinkage tests. In addition, this study used scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) analysis to investigate the RCA-clay interaction to identify the effects of RCA on the microstructure of stabilized mixtures. Finally, this research sought to predict the long-term performance of stabilized mixtures using the AASHTOWare Pavement ME Design software and assess the potential cost savings of using RCA via life-cycle cost analysis (LCCA).
-
Format:
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type: