- Project plans
- Project activities
- Legislation and standards
- Industry context
- Specialist wikis
Last edited 23 Dec 2020
Stratification of concrete
In relation to concrete, the term 'stratification' refers to the formation of horizontal, layered lines that can sometimes be found in cured cast-in-place concrete. This is the result of the pouring of successive concrete batches that may differ slightly in appearance.
Stratification generally only occurs in wetter concrete, rather than those that are of medium or drier consistencies. Concrete that is over-wet or over-vibrated can separate into horizontal layers, with the lighter material tending to form towards the top, and heavier material moving towards the bottom. This can have a detrimental effect on the durability of the concrete.
 Related articles on Designing Buildings Wiki
Featured articles and news
Significant changes to BS 7671:2018+A2:2022 announced.
Students available for administrative roles.
Delisting a World Heritage Site.
Design needs to be more diverse to be widely accessible.
It’s not always a case of the centre leading.
PHribbon toolbar developed for US market.
CIOB consultation seeks feedback on APPG 2020 report.
How to respond to changes made in the October 2021 update.
Resource provides professional installation assistance.