laitance

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English

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Etymology

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From French laitance.

Noun

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laitance (plural laitances)

  1. (construction) A weak, milky layer of cement and aggregate fines on a concrete surface that is usually caused by an overwet mixture, overworking the mixture, improper or excessive finishing or combination thereof. Also, could be caused when a slurry mix is used on a deep foundation, where the slurry mix is not completely removed before placing concrete on top.
  2. (construction) The weak top layer of cement and aggregate fines on a concrete surface that stands between a topical coating and the underlying substrate. This laitance layer prevents a bond forming between the topical coating and substrate, whereby it causes delamination of the topical coating as the laitance layer fails first.

References

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Anagrams

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French

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Etymology

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lait (milk) +‎ -ance

Pronunciation

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  • IPA(key): /lɛ.tɑ̃s/ ~ /le.tɑ̃s/
  • Audio:(file)

Noun

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laitance f (plural laitances)

  1. roe
  2. laitance

Descendants

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  • English: laitance

Further reading

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