About this code
Specification for PSC containing 25-70% granulated blast furnace slag. Excellent sulphate and chloride resistance, low heat — ideal for marine and aggressive environments.
Key sections
- 01Composition
- 02Chemical requirements
- 03Physical requirements
- 04Testing
Critical clauses
Clause 5.1Slag Content
25-70% GGBS by mass.
In practiceHigher slag = better durability, slower strength.
Clause 6.0Strength
Min 16/22/33 MPa at 3/7/28 days.
In practiceCure 14 days; benefit from late strength gain.
Practical implications
For specifiers
Marine, sewage, sulphate soils.
For suppliers
Limited availability inland.
For executors
Extend curing aggressively.
FAQs
PSC vs PPC?
PSC excels at chloride/sulphate resistance; PPC at sulphate alone. PSC has better long-term.
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