Table 1 Physical and chemical properties of materials used in the experimental program.
From: Mechanical and durability assessment of marble dust–fiber concrete supported by ML prediction
Material | Physical properties | Value | Chemical composition (Major oxides %) |
|---|---|---|---|
OPC53 Grade | Specific gravity | 3.15 | CaO 63.2 SiO2 21.4 Al2O3 5.3 Fe2O3 3.4 MgO 1.8 SO3 2.4 |
Blaine fineness (m2/kg) | 335 | ||
Initial/Final setting time (min) | 32 / 210 | ||
Colour | Grey | ||
Fine Aggregate (Natural River Sand, Zone II) | Specific gravity | 2.60 | SiO2 95.3 Al2O3 2.1 Fe2O3 0.6; CaO 0.5 MgO 0.4 |
Fineness modulus | 2.65 | ||
Water absorption (%) | 1.2 | ||
Bulk density (kg/m3) | 1650 | ||
Coarse Aggregate (Crushed Granite, 20 mm) | Specific gravity | 2.70 | SiO2 68.1 Al2O3 15.5 Fe2O3 3.2 CaO 5.9 MgO 2.3 |
Water absorption (%) | 0.65 | ||
Impact value (%) | < 22 | ||
Bulk density (kg/m3) | 1500 | ||
Marble Dust (Industrial Waste Filler) | Specific gravity | 2.65 | CaCO3 85–98 MgO 1.5 SiO2 1.2 Fe2O3 0.3 Loss on ignition 38–42 |
Particle size (µm) | < 90 | ||
Colour | White | ||
Moisture content (%) | < 1 | ||
Polypropylene Fibre (Recycled) | Fibre length (mm) | 12 | C3H6 (Polymer chain) |
Tensile strength (MPa) | > 400 | ||
Elastic modulus (GPa) | 4 | ||
Specific gravity | 0.91 | ||
Water absorption (%) | Nil | ||
Superplasticizer (PCE-Based) | Specific gravity | 1.10 | Main constituents: Polycarboxylate ether (–COOH functional groups) |
Recommended dosage (% of binder) | 0.6 |
