We have read of a case in which a homeowner is suing a ready mixed concrete operator because of cement burns that occured on his legs when he waded in the concrete. Are some concretes more aggressive to the skin than others?
All concrete is too aggressive to the skin to permit wading in it or other prolonged contact. Even those portland cements that are known as low-alkali cements contain enough alkalies to produce caustic mixes. The skin should be kept as much as possible from contact with concrete. Each time concrete does touch the skin it is better to wipe the skin dry with a cloth than to try to wash away the soapy feel. Whenever sweat breaks out in the same area it should be wiped off. At the end of the work period the skin should be thoroughly washed with soap and water.