Concrete Block
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Types and Durability
| Description
Concrete blocks
|
Expected Lifespan
(Years) |
Adjustment Factors |
| Internal | ||
| Dense aggregate blocks manufactured in accordance with BS 6073 Parts 1 and 2 with compressive strengths between 10.6 and 35 N/mm² | 35+ | 1st stage adjustment factor:
In industrial areas (heavy polluted): -15% years In urban areas: -10% years In suburban areas: -0% years 2nd stage adjustment factor: Within 20m from express way: -20% years Within 20m from major arterial road: -10% years Within 20m from light traffic road: – 5% years Within 20m from sea water/ area prone to salt spray: -15% years Test certificate from approved local testing authority : +15% years |
| Dense aggregate or lightweight aggregate blocks manufactured in accordance with BS 6073 Parts 1 and 2 with compressive strengths between 7.1 and 10.5 N/mm² | 35+ | |
| Dense aggregate, lightweight aggregate or aerated blocks manufactured in accordance with BS 6073 Parts 1 and 2 with compressive strengths between 5.9 and 7.0 N/mm² | 35+ | |
| Dense aggregate, lightweight aggregate or aerated blocks manufactured in accordance with BS 6073 Parts 1 and 2 with compressive strengths between 2.8 and 5.8 N/mm² | 35+ | |
| Unlcassified, i.e. blocks of indeterminate strength and/or not manufactured in accordance with BS 6073 Parts 1 and 2. Blocks of compressive strengths less than 2.8 N/mm² | < 35+ | None |
Combination of adjustment factors (1st stage and 2nd stage) should be added to obtain the durability values. Refer to durability calculator.