Ordinary precast is not the tunnel-segment path
This route covers precast piles and other plant-made concrete elements whose production, handling and acceptance conditions differ from tunnel segments.
Plant questions to confirm
- Is fibre added by calibrated weight rather than bundle count?
- Can the plant achieve consistent dispersion within its mixing cycle?
- What workability, casting and production-time limits apply?
- What demoulding-strength gate and edge-damage controls are used?
- How are lifting, storage, transport, repair and batch repeatability verified?
Product selection and dosage require a production trial and the acceptance tests relevant to the specific element. No generic fibre value establishes the performance of every precast product.