Bio-Composites & Recycled AggregatesBWh (Hot Desert / Oasis)
Date Palm Leaf Mesh Composite (Phoenix dactylifera + Clay)
Brique de Terre au Palmier Dattier / Lif (Arabe)
Primary Geographic Coverage: Algeria Morocco Egypt Tunisia Sudan
Compressive Strength
1.45 MPa
Wet yield: 0.65 MPa (Ratio: 45%)Thermal Conductivity (λ)
0.28 W/m·K
Diffusivity: 0.142 mm²/sThermal Phase Lag (30cm)
15.6 hrs
U-Value: 0.84 W/m²·KCarbon vs. Concrete
-92.8%
Embodied: 0.016 kgCO2e/kgSoil Mechanics & Physics
| Soil Classification: | Oases silt-clay mixed with 30% date palm trunk sheath mesh fibers |
| Liquid Limit (LL): | 32% |
| Plastic Limit (PL): | 21% |
| Plasticity Index (PI): | 11% |
| Optimum Moisture Content: | % |
| Proctor Dry Density: | 1580 kg/m³ |
Thermal Thermodynamics
| Conductivity (λ): | 0.28 W/m·K |
| Specific Heat Capacity (c): | 1280 J/kg·K |
| Thermal Diffusivity (α): | 0.142 mm²/s |
| Volumetric Heat Capacity: | 1971 kJ/m³·K |
| 30cm Wall U-Value: | 0.84 W/m²·K |
| Phase Delay (30cm Wall): | 15.6 Hours |
Tectonic Specifications & Architectural Engineering
Bioclimatic Engineering Strategy
Reduces thermal conductivity by 56.9% compared to bare earth. The hollow lignin vascular bundles of the date palm fiber offer world-class thermal insulation in hyper-arid Sahara heat.
Mortar Formulation & Stabilization Mix
Gypsum-clay (Timchent) or lime-mud mortar
Curing, Quality Control & Erosion Protection
Academic References & Lab Data Sources
- Khoudja, D.; Taallah, B.; Izemmouren, O.; Guettala, A. Mechanical and thermophysical properties of raw earth bricks incorporating date palm waste. Constr. Build. Mater. 2021, 270, 121824.
- Boukhattem, L.; Boumhaout, M. Moisture content influence on thermal conductivity of date palm mesh. Constr. Build. Mater. 2017, 148, 811–823.