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laitance

[leyt-ns] /ˈleɪt ns/
noun
1.
a milky deposit on the surface of new cement or concrete, usually caused by too much water.
Origin
1905-1910
1905-10; special use of French laitance milt, equivalent to lait milk (< Latin lact-, stem of lac) + -ance -ance
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples for laitance
  • Remove all laitance, loose material, and rebound by brooming or scraping.
  • Verify concrete is clean and free of laitance, grease, oil and contaminants.
  • Proper preparation should produce a slightly textured surface profile while removing all contamination and laitance.
  • At development of initial set, lightly broom surface to remove any laitance to provide better bond with succeeding applications.
  • Remove laitance and form-release agents from concrete.
  • Clean structural subsurface until smooth and free of laitance.
  • Joints shall be thoroughly cleaned and laitance removed before a new pour is made.
  • Any exposed steel shall be blast cleaned to remove any rust or laitance.
  • laitance, loose material, and rebound shall be removed by air-jetting.
  • laitance that has taken a final set shall be removed by sandblasting and the surface cleaned with air-water jet.

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Word Value for laitance

10
13
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