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Definition of Laitance
1. Noun. (construction) A weak 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 completeley removed before placing concrete on top. ¹
¹ Source: wiktionary.com
Definition of Laitance
1. a milky deposit on the surface of fresh concrete [n -S]
Lexicographical Neighbors of Laitance
Literary usage of Laitance
Below you will find example usage of this term as found in modern and/or classical literature:
1. ... Metamorphism of Portland Cement by Albert Bonaventure Pacini (1912)
"An analysis of laitance by the writer, made for the Board of Water Supply,
practically coincides with an analysis made by Richardson (97) and leads to the ..."
2. The Gastronomic Regenerator: A Simplified and Entirely New System of Cookery by Alexis Soyer (1847)
"... bake them in a warmer oven than the vol-au-vents, prepare the beef marrow,
fill and serve the same as No. 381. No. 387. Petites Bouchees au laitance ..."
3. Materials of Construction: Their Manufacture and Properties by Adelbert Philo Mills (1922)
"laitance is a whitish scum which is washed out of concrete when there is excess of
... The laitance consists of the finest flocculent matter in the cement ..."
4. Manual by American Railway Engineering Association (1921)
"It is impracticable in depositing concrete in water by any method to entirely
avoid laitance, and it is therefore necessary on completing a section of ..."
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