Over this time period, the first concrete pour has not only lost workability but has started to set so that it is no longer affected by the action of a vibrator.
dcterms:bibliographicCitation
2003, John Brian Newman, B. S. Choo, Advanced concrete technology: Volume 2:
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_:vb6844237
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HS2 Ltd has completed the first base-slab concrete pour at the western end of Old Oak Common station.
dcterms:bibliographicCitation
2023 June 14, “Network News: Concrete for Old Oak Common - and consent for Curzon Street viaduct”, in RAIL, number 985, page 22: