The diorite is a massive homogeneous deposit located directly adjacent to Port Rousse. This material is suitable for general construction, asphalt, concrete, rip-rap and armour.
This mafic volcanic cap rock is described as a dark greenish grey, slightly weathered, medium hard, metamorphized rock with calcium carbonate veins throughout. This rock is suitable for general construction (road base and in-fill) or asphalt.
Aggregate Acceptance Testing Results:
|Item||Test||Procedure||Diorite (Coarse)||Gabbro (Coarse)||Maximum Specification Limit|
|1.||Sieve Analysis||CSA A23.2-2A||Various||Various|
|2.||Light Weight Particles||CSA A23.2-4A ASTM C123||0.0%||0.0%||0.5% to 1.0% (2)|
|3.||LA Abrasion||CSA A23.2-16A||23.5%||18.7%||50%|
|4.||Bulk Specific Gravity (SSD)||ASTM D128||2.70||2.79||–|
|6.||Clay Lumps||CSA A23.2-3A ASTM 142||0.0%||0.0%||0.3% to 0.5% (3)|
|7.||Petrographic Number (PN)||CSA A23.2-15A||PN = 103||PN = 125||Recommended: 125 (For Class C1, C2, & F1) 140 (For other Concrete Classes)|
|8.||Unconfined Freeze Thaw||CSA A23.2-24A||0.4%||0.40%||6% to 10% (4)|
|9.||Micro Deval||CSA A23.2-29A||6.2%||15.8%||17% to 21%|
|10.||Flat and Elongated Particle||CSA A23.2-13A Procedure A Ratio 4:1||2.4%||4.9%||20%|
|11.||Soundness||CSA A23.2-9A||0.2%||0.6%||12% (For Class C1, C2, & F1) 18% (For other Concrete Classifications)|
- The maximum allowable percentage of low-density granular materials in the coarse aggregate is 0.5% for exposure classifications F-1, C-1, and C-2 and 1.0% for other exposure conditions.
- The maximum allowable percentage of clay lumps in the coarse aggregate is 0.30% for exposure classifications F-1, C-1, and C-2 and 0.5% for other exposure conditions.
- The maximum percentage of loss from freeze thaw is coarse aggregate is 6% for exposure classifications F-1, C-1, and C-2 and 10% for other exposure conditions.
- Port Rousse