ALL meanings of laitance
lai·tance
L l - noun laitance a milky deposit on the surface of new cement or concrete, usually caused by too much water. 1
- noun laitance (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 completely removed before placing concrete on top. 1
- noun laitance a white film that forms on the surface of drying concrete 0
- noun laitance (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. 0