Have a personal or library account? Click to login
Effect of the Addition of Dispersed Reinforcement on the Resilient Modulus of Slightly Cemented Non-Cohesive Soil Cover

Effect of the Addition of Dispersed Reinforcement on the Resilient Modulus of Slightly Cemented Non-Cohesive Soil

Studia Geotechnica et Mechanica
Volume 45 (2023): Issue s1 (December 2023)
By: Mariola Wasil,  Patryk Dobrzycki and  Katarzyna Zabielska-Adamska  
Open Access
|Sep 2023

Figures & Tables

Figure 1:

Grain size distribution curve of tested soil.
Grain size distribution curve of tested soil.

Figure 2:

Different lengths (and diameters) of fibres in the amount of 0.2% in reference to the dry mass of the sample that was added to the coarse soil: a) 12 mm (0.030 mm), b) 18 mm (0.034 mm), c) 40 mm (0,90 mm).
Different lengths (and diameters) of fibres in the amount of 0.2% in reference to the dry mass of the sample that was added to the coarse soil: a) 12 mm (0.030 mm), b) 18 mm (0.034 mm), c) 40 mm (0,90 mm).

Figure 3:

Soil mixed mechanically with fibres: a) 40 mm long; b) 18 mm long.
Soil mixed mechanically with fibres: a) 40 mm long; b) 18 mm long.

Figure 4:

Compaction curves of gravelly sand and gravelly sand with 1.5% of cement addition compacted by two methods: a) SP, b) MP.
Compaction curves of gravelly sand and gravelly sand with 1.5% of cement addition compacted by two methods: a) SP, b) MP.

Figure 5:

Compaction curves of gravelly sand with different amounts of fibres 18 mm long compacted by two methods: a) SP, b) MP.
Compaction curves of gravelly sand with different amounts of fibres 18 mm long compacted by two methods: a) SP, b) MP.

Figure 6:

Principle of triaxial testing with cyclic loading
Principle of triaxial testing with cyclic loading

Figure 7:

Sample behaviour under cyclic loading in a triaxial cell during one of the initial cycles of the 15th sequence subjected to grSa+1.5%C+0.3%F_18 mm sample compacted with SP method.
Sample behaviour under cyclic loading in a triaxial cell during one of the initial cycles of the 15th sequence subjected to grSa+1.5%C+0.3%F_18 mm sample compacted with SP method.

Figure 8:

Sample behaviour subjected to cyclic loading/unloading in the triaxial cell during 100 cycles of the 15th sequence for grSa+1.5%C+0.3%F_18 mm sample compacted SP method, tested after 7 days of curing.
Sample behaviour subjected to cyclic loading/unloading in the triaxial cell during 100 cycles of the 15th sequence for grSa+1.5%C+0.3%F_18 mm sample compacted SP method, tested after 7 days of curing.

Figure 9:

Resilient modulus Mr values obtained after 7 and 28 days of curing for samples with 1.5% cement and 0.2% fibres of different lengths compacted by: a) SP method; b) MP method.
Resilient modulus Mr values obtained after 7 and 28 days of curing for samples with 1.5% cement and 0.2% fibres of different lengths compacted by: a) SP method; b) MP method.

Figure 10:

Resilient modulus Mr values obtained after 7 and 28 days of curing for samples with 1.5% cement and 0.3% fibres of different lengths compacted by: a) SP method; b) MP method.
Resilient modulus Mr values obtained after 7 and 28 days of curing for samples with 1.5% cement and 0.3% fibres of different lengths compacted by: a) SP method; b) MP method.

Figure 11:

Mr values of samples tested after 7 days of curing compacted by SP method with different fibres content: a) grSa+1.5%C+0.2%F_18 mm b) grSa+1.5%C+0.3%F_18 mm.
Mr values of samples tested after 7 days of curing compacted by SP method with different fibres content: a) grSa+1.5%C+0.2%F_18 mm b) grSa+1.5%C+0.3%F_18 mm.

Figure 12:

Mr values of samples tested after 7 days of curing compacted by MP method with different fibres content: a) grSa+1.5%C+0.2%F_18 mm b) grSa+1.5%C+0.3%F_18 mm.
Mr values of samples tested after 7 days of curing compacted by MP method with different fibres content: a) grSa+1.5%C+0.2%F_18 mm b) grSa+1.5%C+0.3%F_18 mm.

Figure 13:

Mr values of samples tested after 7 days of curing compacted by SP method with different fibres content: a) grSa+1.5%C+0.2%F_12 mm b) grSa+1.5%C+0.3%F_12 mm.
Mr values of samples tested after 7 days of curing compacted by SP method with different fibres content: a) grSa+1.5%C+0.2%F_12 mm b) grSa+1.5%C+0.3%F_12 mm.

Figure 14:

Mr values of samples tested after 7 days of curing compacted by MP method with different fibres content: a) grSa+1.5%C+0.2%F_12 mm b) grSa+1.5%C+0.3%F_12 mm.
Mr values of samples tested after 7 days of curing compacted by MP method with different fibres content: a) grSa+1.5%C+0.2%F_12 mm b) grSa+1.5%C+0.3%F_12 mm.

Values of Mr obtained for samples after different compaction and curing periods_

SamplesResilient modulus Mr (MPa)Curing period
SP compactionMP compaction(days)
grSa+1.5%C1971687
27235328
grSa+1.5%C+0.2%F_12 mm731657
16217728
grSa+1.5%C+0.3%F_12 mm1932247
17823628
grSa+1.5%C+0.2%F_18 mm2712157
20223028
grSa+1.5%C+0.3%F_18 mm3012267
21424128
grSa+1.5%C+0.2%F_40 mm511407
14515328

The specific density and compaction parameters of tested materials_

Sampleρs(Mg/m3)Proctor compaction method
StandardModified
wopt (%)ρd max (Mg/m3)wopt (%)ρd max (Mg/m3)
grSa2.659.71.9749.62.022
grSa+1.5%C2.669.52.0109.52.070
grSa+1.5%C+0.2%F_12 mm2.669.42.0757.92.150
grSa+1.5%C+0.3%F_12 mm2.668.92.1036.82.170
grSa+1.5%C+0.2%F_18 mm2.667.92.0667.02.183
grSa+1.5%C+0.3%F_18 mm2.668.02.0607.82.124
grSa+1.5%C+0.2%F_40 mm2.668.82.1087.52.144
DOI: https://doi.org/10.2478/sgem-2023-0013 | Journal eISSN: 2083-831X | Journal ISSN: 0137-6365
Journal RSS Feed
Language: English
Page range: 293 - 303
Submitted on: Mar 1, 2023
Accepted on: Jun 23, 2023
Published on: Sep 30, 2023
Published by: Wroclaw University of Science and Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
cyclic loading,
fibre reinforcement,
cement stabilisation,
compacted soil
Related subjects:
Geosciences,
Geosciences, other,
Materials sciences,
Composites,
Porous materials,
Physics,
Mechanics and fluid dynamics

© 2023 Mariola Wasil, Patryk Dobrzycki, Katarzyna Zabielska-Adamska, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution 4.0 License.

Previous articleVolume 45 (2023): Issue s1 (December 2023)Next article