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Article: The two most misused words in cement, concrete, and masonry.(Hime & Erlin on Concrete)
- Article from:
- Concrete Construction
- Article date:
- April 1, 2004
- Author:
CopyrightCOPYRIGHT 2004 Hanley-Wood, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Lime--Many words have multiple definitions and usages, and that can lead to confusion. "Lime" is one example. It can mean calcium oxide (CaO), calcium hydroxide (Ca(OH)[sub.2]), or any calcium compound. It can even mean magnesium hydroxide (Mg(OH[).sub.2]), which is close but does not have the same makeup. Lime mortars, for example, usually are those made with calcium hydroxide (hydrated quicklime or slaked lime) but also can be "dolomitic lime," which is a mixture of calcium and magnesium hydroxides.
Free lime is used to designate uncombined lime and hard-burned lime, which are the same (CaO), and calcium hydroxide (Ca(OH[).sub.2]), which is different. When free ...