Durability assessment of soft clay soil stabilized with halloysite nanotubes

Title:

Durability assessment of soft clay soil stabilized with halloysite nanotubes

Creator:

Tavakolipour, Masoud and Salemi, Niloofar

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:e80e7821-c8d6-4628-b2d9-3bccd25f50f7
uuid:e80e7821-c8d6-4628-b2d9-3bccd25f50f7
issn:1214-9705
doi:10.13168/AGG.2021.0030

Subject:

půdy, soils, soil stabilization, Halloysite nanotubes, unconfined compressive strength, wet/dry durability, freeze/thaw durability, 7, and 551

Type:

model:article and TEXT

Format:

print, bez média, and svazek

Description:

In this study the compressive strength and durability of soft clay soil stabilized with halloysite nanotubes are investigated. Halloysite nanotubes are novel 1D natural nanomaterials which are widely used in reinforcing polymer, pollution remediation, and as nanoreactors for biocatalyst. The wide use of halloysite nanotubes is due to their high aspect ratio, appropriate mechanical strength, high thermal stability, nature-friendly and cost-effectiveness. However, the use of halloysite nanotubes as a stabilizing agent for improving the durability of soil is not clear. In this research, halloysite nanotubes was used in the amounts of 2%, 5% and 10% by the weight of dried soil. Unconfined compressive strength, wet/dry cycles and freeze/thaw cycles tests were performed to evaluate the strength and durability of stabilized soft clay soil. Experimental results showed that halloysite nanotubes considerably improves the compressive strength and durability of soft clay soil. The optimum amount of halloysite nanotubes for soil stabilizing in terms of compressive strength and durability was 5%. The compressive strength of soft clay increased as much as 129% by applying 5% halloysite nanotubes. Also, the specimen containing 5% halloysite nanotubes showed the least strength loss after wet/dry and freeze/thaw cycles. The soil sample containing 5% halloysite nanotubes lost 20% of its initial compressive strength after 8 cycles of freezing and thawing, while the soil sample without any halloysite content lost 100% of its compressive strength after the same number of freezing and thawing. Based on the obtained results, the use of halloysite nanotubes in order to enhance the strength and durability of soft clay is strongly recommended., Tavakolipour Masoud, Salemi Niloofar., and Obsahuje bibliografické odkazy

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

429-436

Source:

Acta geodynamica et geomaterialia : | 2021 Volume:18 | Number:4 (204)

Harvested from:

CDK

Metadata only:

false