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Investigating Calcareous and Silica Sand Behavior at Material Interfaces: A Comprehensive Study

Abolghasem Ahmadi

Abolghasem Ahmadi

Department of Civil Engineering, Najafabad Branch, Islamic Azad UniversityNajafabad, Iran
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Ahmadi, Abolghasem
, 
Mohammad Amin Nozari

Mohammad Amin Nozari

  • Department of Civil Engineering, Rasht Branch, Islamic Azad UniversityRasht, Iran
  • Department of Civil Engineering, Najafabad Branch, Islamic Azad UniversityNajafabad, Iran
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Nozari, Mohammad Amin
, 
Meysam Bayat

Meysam Bayat

Department of Civil Engineering, Najafabad Branch, Islamic Azad UniversityNajafabad, Iran
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Bayat, Meysam
 and 
Ehsan Delavari

Ehsan Delavari

Department of Civil Engineering, Najafabad Branch, Islamic Azad UniversityNajafabad, Iran
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Delavari, Ehsan
  
Nov 06, 2024
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Article Category: Original Study
Published Online: Nov 06, 2024
Page range: 315 - 327
Received: Oct 27, 2023
Accepted: Aug 25, 2024
DOI: https://doi.org/10.2478/sgem-2024-0023
Keywords
© 2024 Abolghasem Ahmadi et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

Figure 1:

Grain size distribution curves and photographs of calcareous and silica sands.
Grain size distribution curves and photographs of calcareous and silica sands.

Figure 2:

Steel and concrete plates with various Rn values.
Steel and concrete plates with various Rn values.

Figure 3:

Shear strength envelopes for the tested soils at Dr of 30 and 90%.
Shear strength envelopes for the tested soils at Dr of 30 and 90%.

Figure 4:

Shear strength envelopes for the interaction between (a) calcareous sand and steel plates, and (b) silica sand and steel plates, with different Rn values (Dr = 90%).
Shear strength envelopes for the interaction between (a) calcareous sand and steel plates, and (b) silica sand and steel plates, with different Rn values (Dr = 90%).

Figure 5:

Maximum interface shear strength values between calcareous or silica sand and steel plates with various Rn values, under various normal stress levels and Dr = 90%.
Maximum interface shear strength values between calcareous or silica sand and steel plates with various Rn values, under various normal stress levels and Dr = 90%.

Figure 6:

Friction angle ratios for both calcareous and siliceous sand (Dr = 90%).
Friction angle ratios for both calcareous and siliceous sand (Dr = 90%).

Figure 7:

Shear strength envelopes for the calcareous sand-steel interface under (a) Dr = 30% and (b) Dr = 90% with various Rn values.
Shear strength envelopes for the calcareous sand-steel interface under (a) Dr = 30% and (b) Dr = 90% with various Rn values.

Figure 8:

Maximum shear strength of the calcareous sand-steel interface versus the Rn under various normal stress levels.
Maximum shear strength of the calcareous sand-steel interface versus the Rn under various normal stress levels.

Figure 9:

Variation of the friction angle ratio of calcareous sand-steel interface versus the Rn under Dr 0f 30 and 90%.
Variation of the friction angle ratio of calcareous sand-steel interface versus the Rn under Dr 0f 30 and 90%.

Figure 10:

Shear strength envelopes of the calcareous sand-concrete interface.
Shear strength envelopes of the calcareous sand-concrete interface.

Figure 11:

Maximum mobilized shear strength values at the interface of calcareous sand and steel or concrete plates under various normal stress values (Dr = 90%).
Maximum mobilized shear strength values at the interface of calcareous sand and steel or concrete plates under various normal stress values (Dr = 90%).

Figure 12:

Friction angle ratio for calcareous sand-concrete or steel interface at Dr of 90%.
Friction angle ratio for calcareous sand-concrete or steel interface at Dr of 90%.

Figure 13:

Shearing angles of 0° and 90°.
Shearing angles of 0° and 90°.

Figure. 14:

Effect of shearing angle on the shear strength envelopes at the interface of calcareous sand and concrete or steel plates (Dr = 90%).
Effect of shearing angle on the shear strength envelopes at the interface of calcareous sand and concrete or steel plates (Dr = 90%).

Physical and geotechnical properties of calcareous and silica sands_

Characteristics Symbol Unit Calcareous Sand Silica Sand
Specific Gravity Gs (-) 2.73 2.71
Particle Diameter at 10% Finer D10 (mm) 0.4 0.4
Particle Diameter at 30% Finer D30 (mm) 0.7 0.7
Particle Diameter at 50% Finer (mean particle size) D50 (mm) 1 1
Particle Diameter at 60% Finer D60 (mm) 1.19 1.19
Coefficient of Uniformity Cu (-) 2.98 2.98
Coefficient of Curvature Cc (-) 1.03 1.03
Minimum Void Ratio emin (-) 0.61 0.54
Maximum Void Ratio emax (-) 0.96 0.91
Maximum Dry Density MDD (g/cm3) 1.521 1.9
Optimum Moisture Content OMC (%) 4 8
Soil Type (Unified Soil Classification System) UCSC - SP SP

Chemical properties of calcareous sand_

Compound Mass percentage (%)
CaO 50.03
MgO 1.630
SiO2 0.908
Na2O 0.796
SrO 0.580
Cl 0.525
SO3 0.500
Al2O3 0.270
Fe2O3 0.126
P2O5 0.091
K2O 0.066
CuO 0.021
LOI* 44.46
Language:
English
Publication timeframe:
4 times per year
Journal Subjects:
Geosciences, Geosciences, other, Materials Sciences, Composites, Porous Materials, Physics, Mechanics and Fluid Dynamics
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