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Cluster Analysis (Tests performed by LTPO)

Geotechnical testing

Sable 0/3 3/8 8/15 15/25
Tests on aggregates washed unwashed washed unwashed washed unwashed
True density g/cm3 2,69 2,69
Apparent density g/cm3 1,51 1,51 1,32 1,32 1,30 1,30 1,35
Micro Deval % 14 16 16 16 14
Cleanliness 0,85 1,25 0,30 0,62 0,41
Los Angeles 26 28 27 25 27
Flattening coefficient % 15 16 3 3 3
Equivalent sand % 89,56 82,84
Fineness modulus 3,19 2,53
Rejects at D % 3 3 6 8 0
Passing fraction at d % 3 9 12 15 1 1 39


Chemical analysis

Sample element % Si O² AL²O³ Fe2O³ CaO MgO Na²O³ K²O Ti O² MnO P² O5 PAF
0/3 2,14 0,57 0,21 52,16 1,36 0,20 0,11 <0,05 0,01 0,06 42,58


Analysis on Roche

Designation
Roche
Sample 1
Pressure resistance (bar) 442
True density (g/cm³) 2,68
Proportion of air voids % 0,65
Los Angeles % 24
Micro Deval % 11

Interpretations :

Aggregates 3/8 8/15 and 15/25 from Djebel Zeroual have given satisfactory results.
Washed Sand has an equivalent of 89, 56%.

Analysis of untreated crushed gravel

Tests
Results
Grain size analysis Dmax:31,5mm
Rate of fines:
2%<{(<80μm)=4,25%}
Sand Equivalent Es(%): 78
Micro Deval 16
Los Angeles 24
Summary Chemical Analysis LA (CaCO3 (%): 93
Co2(%) : 41
Na CI(%) : 0,18
Sulfates (%) : traces
Methylene-blue active substance VBS (mg/l): 0,43
Normal/modified Proctor Max weight (t/m3): 2,08
W (%) :3,90
Conception : VITAMINEDZ