Aggregate Sizes Guide — Gravel & Crushed Stone Grades for Construction
Understanding aggregate sizes is essential for choosing the right materials for your construction project. This guide covers the standard aggregate grades available in Dar es Salaam and their specific applications.
Standard Aggregate Sizes
Construction aggregates are graded by particle size, from fine crusher dust to large stones. Each grade serves a specific purpose in construction, from concrete production to road building and drainage.
| Grade | Common Uses | Source |
|---|---|---|
| Crusher Dust (0-5mm) | Base layer for paving, slab bedding, backfill | Crushing operations at Lugoba quarry |
| 6mm (¼") | Fine concrete, block making, plastering aggregate | Screened and washed at our production facility |
| 10mm (⅜") | Concrete production, pipe bedding, drainage layers | Quality-controlled crushing at Lugoba |
| 14mm (½") | Standard concrete aggregate, road surfacing | Produced to engineering specifications |
| 20mm (¾") | Structural concrete, road base, foundation fill | Sourced from quality-controlled production |
| 40mm (1½") | Mass concrete, drainage, large foundation fill | Production from our Lugoba crushing plant |
| Road Base | Road construction base course, sub-base material | Specification-graded from our crusher |
| Asphalt Aggregate | Asphalt production, road surfacing, wearing course | Specially graded for asphalt plant feed |
Choosing the Right Aggregate
Selecting the correct aggregate size depends on your application. For concrete production, 10mm and 20mm aggregates are standard. Road construction requires graded base course materials, while drainage applications need larger, open-graded aggregates.
Tanzibaba supplies all aggregate grades from our Lugoba crushing operations, with bulk delivery available across Dar es Salaam, Zanzibar and Dodoma.
FAQ
What is the most common aggregate size for concrete?
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Do you supply aggregates in Zanzibar and Dodoma?
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