Impact of recycled concrete aggregate particle size on the strength of soil mixtures for subgrade improvement
Open accessAbstract
Subgrade improvement applications have extensively investigated the financial and ecological benefits of utilizing recycled concrete aggregate (RCA) waste. This solution has been widely studied in recent decades. This study presents the findings of the relationship between different sizes of recycled concrete aggregate (RCA) particles and certain properties of SRCA blends by adding cement. The test results showed that adding RCA with cement to unstabilized soil significantly improved its compressive strength behavior. Incorporating RCA into the soil mixture can more than double its compressive strength. Integrating larger RCA particle sizes into unstabilized soil decreased the optimum moisture content (OMC) while increasing the maximum dry density (MDD). Conversely, using finer RCA particle sizes in soil mixtures increased the compressive strength compared to larger RCA particles. This blend of RCA-stabilized expansive soil is suitable for subgrade improvement applications, such as building low-traffic volume roads and ensuring embankment stability.
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Cited by 3
- Authors
- Ho, T. K. T., & Le, H. K.
- Affiliations
- Can Tho University (VN)
- Venue
- CTU Journal of Innovation and Sustainable Development
- Publisher
- Can Tho University
- Published
- 2025-03-04
- Volume
- 17
- Issue
- Special issue: ETMD
- Pages
- 102-112
- ISSN
- 2588-1418 (ISSN-L)
- 2815-6412
- OpenAlex
- W4408466740
- Cited by
- 3
- References
- 0
- Citations by year
- 2026: 3
- FWCI
- 1.00
- Type
- journal article
- Language
- en
- Open access
- diamond
- doi.org
- Licence
- Locations
- CTU Journal of Innovation and Sustainable Development (publishedVersion, cc-by-nc)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Topics
- Physical Sciences › Engineering › Civil and Structural Engineering › Geotechnical Engineering and Soil Stabilization
- Physical Sciences › Engineering › Civil and Structural Engineering › Geotechnical and construction materials studies
- Physical Sciences › Engineering › Building and Construction › Recycled Aggregate Concrete Performance
- Keywords
- recycled concrete aggregate, particle size, soil stabilization, subgrade improvement, compressive strength, optimum moisture content, maximum dry density, expansive soil, cement stabilization, waste recycling, embankment stability, low-volume roads
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