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Compressive and Tensile Strength of Nano-clay Stabilised Soil Subjected to Repeated Freeze–Thaw Cycles

Mahya Roustaei
Mahya Roustaei
, 
Mahdi Sabetraftar
Mahdi Sabetraftar
, 
Ehsan Taherabadi
Ehsan Taherabadi
 oraz 
Meysam Bayat
Meysam Bayat
   | 01 wrz 2023
Studia Geotechnica et Mechanica's Cover Image
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Article Category: Original Study
Data publikacji: 01 wrz 2023
Zakres stron: 221 - 230
Otrzymano: 22 paź 2022
Przyjęty: 13 maj 2023
DOI: https://doi.org/10.2478/sgem-2023-0009
Słowa kluczowe
© 2023 Mahya Roustaei et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

Figure 1:

Grain size distribution curves of soil.
Grain size distribution curves of soil.

Figure 2:

Influence of nano-clay on the (a) compaction curve of clay and (b) normalised maximum dry unit weight and normalised optimum moisture content.
Influence of nano-clay on the (a) compaction curve of clay and (b) normalised maximum dry unit weight and normalised optimum moisture content.

Figure 3:

UCS stress–strain curves of specimens without any freeze–thaw cycles (a), curing time = 0 days (b) curing time = 7 days and (c) curing time = 28 days.
UCS stress–strain curves of specimens without any freeze–thaw cycles (a), curing time = 0 days (b) curing time = 7 days and (c) curing time = 28 days.

Figure 4:

Unconfined compressive strength of specimens without any freeze–thaw cycles.
Unconfined compressive strength of specimens without any freeze–thaw cycles.

Figure 5:

Tensile strength of specimens without any freeze–thaw cycles.
Tensile strength of specimens without any freeze–thaw cycles.

Figure 6:

UCS stress–strain curves of specimens subjected to freeze–thaw cycles: (a) nano-clay content = 0%, (b) nano-clay content = 0.5%, (c) nano-clay content = 1%, (d) nano-clay content = 1.5%, (e) nano-clay content = 2%, (f) nano-clay content = 3%.
UCS stress–strain curves of specimens subjected to freeze–thaw cycles: (a) nano-clay content = 0%, (b) nano-clay content = 0.5%, (c) nano-clay content = 1%, (d) nano-clay content = 1.5%, (e) nano-clay content = 2%, (f) nano-clay content = 3%.

Figure 7:

Normalised unconfined compressive strength of the specimens versus number of freeze–thaw cycles: (a) curing time = 0 day, (b) curing time = 7 days, (c) curing time = 28 days.
Normalised unconfined compressive strength of the specimens versus number of freeze–thaw cycles: (a) curing time = 0 day, (b) curing time = 7 days, (c) curing time = 28 days.

Figure 8:

Normalised ultimate tensile strength of specimens versus number of freeze–thaw cycles: (a) curing time = 0 day, (b) curing time = 7 days, (c) curing time = 28 days.
Normalised ultimate tensile strength of specimens versus number of freeze–thaw cycles: (a) curing time = 0 day, (b) curing time = 7 days, (c) curing time = 28 days.

Properties of nano-clay particles.

Parameter Typical dry particle sizes γd (g/cm3) Gs
90% less than 50% less than 10% less than
Value 10 μm 6 μm 2 μm 1.98 1.6

Geotechnical properties of clayey soil.

Parameter Liquid limit (LL) (%) Plastic limit (PL) (%) Plastic index (PI) (%) Gs
Value 36 20 16 2.757

Summary of the test's details.

Test group Nano-clay content (%) No. of freeze–thaw cycles Curing time (days) No. of tests
Group 1 0.5, 1, 1.5, 2 and 3 0 0, 7 and 28 15 UCS†, 15 STS‡
Group 2 0.5, 1, 1.5, 2 and 3 0, 1, 3, 6, 9 and 11 0, 7 and 28 90 UCS; 90 STS
eISSN:
2083-831X
Język:
Angielski
Częstotliwość wydawania:
4 razy w roku
Dziedziny czasopisma:
Geosciences, other, Materials Sciences, Composites, Porous Materials, Physics, Mechanics and Fluid Dynamics
Kanał RSS czasopisma