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Impact of various binders on loess durability subjected to different freeze-thaw regimes.
- Source :
-
European Journal of Environmental & Civil Engineering . Jun2024, Vol. 28 Issue 8, p1924-1942. 19p. - Publication Year :
- 2024
-
Abstract
- Freezing and thawing (F/T) is an important occurrence in cold regions influencing soil geotechnical characteristics. Current study investigates effects of lime, Rice Husk Ash (RHA) and Nano-clay on unconfined compressive strength and F/T of loess under open and closed schemes. Loess was treated with 2, 4, 6 and 8% lime and RHA and 0.5, 1.0, 1.5 and 2% Nano-clay and compacted at optimum conditions. Samples were cured for 1, 7, 14 and 28 days at 35 °C before freezing at −23 °C and thawing at room temperature for 24 h intervals. Tests conducted on untreated and RHA and Nano-clay treated samples showed total loss of strength after one F/T cycle with noticeable weight and volume changes by samples subjected to open F/T. Exposing samples to closed F/T resulted in smaller changes in volume and strength. Samples treated independently with lime or concurrently with RHA and Nano-clay showed significant resistance to F/T particularly with curing time. Formations of chemical compounds bind particles, reduce void ratio resulting in a solid durable structure resisting freezing. Open F/T proved more detrimental than closed F/T scheme exhibiting moisture accessibility to be a dominant factor on F/T process. [ABSTRACT FROM AUTHOR]
- Subjects :
- *LOESS
*RICE hulls
*DURABILITY
*COMPRESSIVE strength
COLD regions
Subjects
Details
- Language :
- English
- ISSN :
- 19648189
- Volume :
- 28
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- European Journal of Environmental & Civil Engineering
- Publication Type :
- Academic Journal
- Accession number :
- 177165096
- Full Text :
- https://doi.org/10.1080/19648189.2023.2286470