A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Effect of freeze–thaw cycling on the mechanical properties of lime-stabilized expansive clays
https://orcid.org/0000-0002-0967-7259
https://orcid.org/0000-0003-0776-2297
Abstract In cold regions, earth structures such as embankments and roads are exposed to periodic freeze–thaw (F–T). This study was conducted to investigate the impact of F–T cycles on the mechanical properties of two types of plastic soils, stabilized with lime. Two types of clayey soils (high plasticity—bentonite and low plasticity—kaolinite), both untreated and lime-treated (with a curing time of up to 300days), were tested. Durability was assessed as the influence of F–T cycles on the unconfined compressive strength (UCS), direct shear strength, porosity and volume changes of these soils. The results indicate that the volume of the treated soils increased during the first F–T cycles, after which this increase became less pronounced. The UCS increased significantly when the curing time was extended from 3 to 28 and then to 300days. After subjecting the materials to F–T action, the damage (crack formation) caused by the formation of ice lenses in the pores of lime-stabilized soil samples was found to have a more significant effect in bentonite soil than in kaolinite soil. Both direct shear strength parameters presented some alterations with the increased number of F–T cycles (the friction angle increased slightly and the cohesion decreased). The F–T effects on the direct shear strength were mainly reflected in cohesion, thus affecting the durability of the stabilized soil.
Highlights Lime addition improves the UCS of clayey soils subjected to F–T cycles. Increasing curing time of lime treated soil decreases volume changes during F–T cycles. Lime treatment improves shear strength parameters (c and φ) against F–T cycles.
Effect of freeze–thaw cycling on the mechanical properties of lime-stabilized expansive clays
https://orcid.org/0000-0002-0967-7259
https://orcid.org/0000-0003-0776-2297
Abstract In cold regions, earth structures such as embankments and roads are exposed to periodic freeze–thaw (F–T). This study was conducted to investigate the impact of F–T cycles on the mechanical properties of two types of plastic soils, stabilized with lime. Two types of clayey soils (high plasticity—bentonite and low plasticity—kaolinite), both untreated and lime-treated (with a curing time of up to 300days), were tested. Durability was assessed as the influence of F–T cycles on the unconfined compressive strength (UCS), direct shear strength, porosity and volume changes of these soils. The results indicate that the volume of the treated soils increased during the first F–T cycles, after which this increase became less pronounced. The UCS increased significantly when the curing time was extended from 3 to 28 and then to 300days. After subjecting the materials to F–T action, the damage (crack formation) caused by the formation of ice lenses in the pores of lime-stabilized soil samples was found to have a more significant effect in bentonite soil than in kaolinite soil. Both direct shear strength parameters presented some alterations with the increased number of F–T cycles (the friction angle increased slightly and the cohesion decreased). The F–T effects on the direct shear strength were mainly reflected in cohesion, thus affecting the durability of the stabilized soil.
Highlights Lime addition improves the UCS of clayey soils subjected to F–T cycles. Increasing curing time of lime treated soil decreases volume changes during F–T cycles. Lime treatment improves shear strength parameters (c and φ) against F–T cycles.
Effect of freeze–thaw cycling on the mechanical properties of lime-stabilized expansive clays
https://orcid.org/0000-0002-0967-7259
https://orcid.org/0000-0003-0776-2297
Abstract In cold regions, earth structures such as embankments and roads are exposed to periodic freeze–thaw (F–T). This study was conducted to investigate the impact of F–T cycles on the mechanical properties of two types of plastic soils, stabilized with lime. Two types of clayey soils (high plasticity—bentonite and low plasticity—kaolinite), both untreated and lime-treated (with a curing time of up to 300days), were tested. Durability was assessed as the influence of F–T cycles on the unconfined compressive strength (UCS), direct shear strength, porosity and volume changes of these soils. The results indicate that the volume of the treated soils increased during the first F–T cycles, after which this increase became less pronounced. The UCS increased significantly when the curing time was extended from 3 to 28 and then to 300days. After subjecting the materials to F–T action, the damage (crack formation) caused by the formation of ice lenses in the pores of lime-stabilized soil samples was found to have a more significant effect in bentonite soil than in kaolinite soil. Both direct shear strength parameters presented some alterations with the increased number of F–T cycles (the friction angle increased slightly and the cohesion decreased). The F–T effects on the direct shear strength were mainly reflected in cohesion, thus affecting the durability of the stabilized soil.
Highlights Lime addition improves the UCS of clayey soils subjected to F–T cycles. Increasing curing time of lime treated soil decreases volume changes during F–T cycles. Lime treatment improves shear strength parameters (c and φ) against F–T cycles.
Effect of freeze–thaw cycling on the mechanical properties of lime-stabilized expansive clays
Hotineanu, Anca (author) / Bouasker, Marwen (author) / Aldaood, Abdulrahman (author) / Al-Mukhtar, Muzahim (author)
Cold Regions, Science and Technology ; 119 ; 151-157
2015-08-04
7 pages
Article (Journal)
Electronic Resource
English
Effect of freeze–thaw cycling on the mechanical properties of lime-stabilized expansive clays
| Online Contents | 2015
Mechanical recovery of lime-stabilised clays subjected to freeze–thaw damage
| Taylor & Francis Verlag | 2023
Effect of Freeze—Thaw Cycles on Mechanical Behavior of Lime-Stabilized Soil
| British Library Online Contents | 2016