'Shotcrete' (sprayed concrete) is used primarily for:
Choose the correct answer
Only for pre-cast factory elements
Slope stabilisation, tunnel linings, repair — sprayed at high velocity without formwork; impact provides compaction
Plain roads in rural areas
Under-water bridge piers only
Correct Answer
B. Slope stabilisation, tunnel linings, repair — sprayed at high velocity without formwork; impact provides compaction
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Shotcrete: concrete pneumatically applied (sprayed) at high velocity onto surface. Dry-mix: dry materials pneumatically conveyed, water added at nozzle. Wet-mix: pre-mixed concrete pumped and sprayed. Applications: slope stabilisation and rock support, tunnel linings, swimming pools, repair of deteriorated structures, slopes in cuttings. Compaction achieved by impact (no formwork needed).
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