Fine sepiolite addition to air lime-metakaolin mortars

$14.04 plus tax (Refund Policy)

Buy Article:

Abstract:

Lime-based mortars with admixtures of metakaolin (10,20 and 30 wt.%) and fine sepiolite (5 wt.%) were prepared with the aim of facilitating their use as repair mortars in low-humidity conditions. The mechanical properties and the dynamic modulus of elasticity were studied after 28,90 and 180 days of curing. With an increasing amount of metakaolin in lime mortars, improved mechanical strength was observed mainly after 90 days. Addition of fine sepiolite, due to its adsorption properties for storing water for later supply to the mortar system and its microfibrous morphology, led to an improvement of compressive and flexural strength of blended air lime/air lime-metakaolin mortars, especially at later ages of curing. Incorporation of fine sepiolite into air lime-metakaolin mortars resulted in comprehensive densification of the core of the mortars. Air lime mortar containing 5 wt.% of fine sepiolite and 20 wt.% of metakaolin appears to be an optimal admixture.

Keywords: ELASTICITY MODULUS; LIME; MECHANICAL PROPERTIES; METAKAOLIN; MORTAR; SEPIOLITE

Document Type: Research Article

DOI: http://dx.doi.org/10.1180/claymin.2011.046.4.621

Publication date: December 1, 2011

More about this publication?
Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
UA-1313315-23
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more