Alkali burns from wet cement.
When water is added to the dry materials of Portland cement calcium hydroxide is formed; the wet cement is caustic (with a pH as high as 12.9) and can produce third-degree alkali burns after 2 hours of contact. Unlike professional cement workers, amateurs are usually not aware of any danger and may stand or kneel in the cement for long periods. As illustrated in a case report, general physicians may recognize neither the seriousness of the injury in its early stages nor the significance of a history of prolonged contact with wet cement. All people working with cement should be warned about its dangers and advised to immediately wash and dry the skin if contact does occur.
D002057:Burns, Chemical / Q000209:etiology*; D002126:Calcium Hydroxide / Q000009:adverse effects*; D003252:Construction Materials / Q000009:adverse effects*; D005533:Foot Dermatoses / Q000139:chemically induced*; D006801:Humans; D008297:Male; D008875:Middle Aged
D002126:Calcium Hydroxide