Editing Concrete block (section)

== Naming ==

Those that use cinders ([[fly ash]] or [[bottom ash]]) as an [[Aggregate (composite)|aggregate]] material are called ''cinder blocks'' in the United States. They are also known as ''breeze blocks'', a term derived from ''breeze'', referring to the small cinders and cinder-dust that are  created by partially burned coal.<ref name =encyc>{{cite web | title=breeze-block | website=Encyclopedia.com | date=26 July 2023 | url=https://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/breeze-block | access-date=3 August 2023}}</ref><ref>{{cite book|title=breeze |series=[[The Oxford English Dictionary]] |url=http://dictionary.oed.com/cgi/entry/50027165/50027165se1 |access-date=2007-11-30 |edition=2nd |year=1989 |publisher=[[Oxford University Press]] |chapter=breeze, ''n.<sup>3</sup>'' |archive-url=https://web.archive.org/web/20110524174214/http://dictionary.oed.com/cgi/entry/50027165/50027165se1 |archive-date=May 24, 2011 }}</ref> However, in the United States ''breeze blocks'' also refers specifically to decorative blocks used on exterior walls to allow the breeze through, which were an important feature of [[Mid-century modern|Mid-Century Modern]] design,<ref>{{cite web | last=Henderson | first=Rabekah | title=All about breeze blocks | website=Atomic Ranch | date=24 September 2019 | url=https://www.atomic-ranch.com/architecture-design/all-about-breeze-blocks/ | access-date=3 August 2023}}</ref> popularised by [[Edward Durrell Stone]].

In Australia, they are often known as '''besser blocks''' (because the [[Jesse Besser|Besser Company]] was a major supplier of machines that made concrete blocks), and also as '''grey blocks''' or concrete masonry units (CMUs).<ref>{{cite web | title=The Who, What, When & Why of Besser Blocks | website=Apex Masonry | date=15 August 2019 | url=https://www.apexmasonry.com.au/news/history-of-the-besser-block/#:~:text=The%20name%20'besser%20block'%20dates,household%20name%20for%20concrete%20blocks. | access-date=3 August 2023}}</ref>

'''Clinker blocks''' use [[Clinker (waste)|clinker]] (ash created as a waste product from impurities in minerals such as coal, limestone and iron-ore), also called slag.<ref name =encyc />