Possible Role of Simple Ionic Solutions on the Water Transport Kinetics and Mechanical Properties of Hydrated Lime Mortars
Publication: Journal of Materials in Civil Engineering
Volume 27, Issue 3
Abstract
The CL90 mortar (i.e., the nonhydraulic lime mortar) is dramatically more water retaining than any of the hydraulic mortars. This paper investigates the possible role of simple ionic solutions used as mix water on the water transport kinetics and mechanical properties of hydrated lime mortars. The results show that the addition of sulphate solutions as mix water does not only improve the transfer sorptivity and time to dewater, but also consistency and setting time of hydrated lime mortars. Compressive strength of hydrated lime mortars is significantly increased when potassium sulphate is used as mix water solution, and this is supported with microstructural analysis. The parameters studied in this paper form the main barriers to the use of hydrated lime mortars in construction practice; therefore, the use of hydrated lime mortars may be encouraged if the simple ionic solutions as mix water can improve the fresh and hardened properties of these mortars.
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Published In
Journal of Materials in Civil Engineering
Volume 27 • Issue 3 • March 2015
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Oct 7, 2013
Accepted: Feb 5, 2014
Published online: Jul 16, 2014
Discussion open until: Dec 16, 2014
Published in print: Mar 1, 2015
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