Determination of carbonation profiles in non-hydraulic lime mortars using thermogravimetric analysis

Reference:

Lawrence, R.M.H., Mays, T. J., Walker, P. and D'Ayala, D., 2006. Determination of carbonation profiles in non-hydraulic lime mortars using thermogravimetric analysis. Thermochimica Acta, 444 (2), pp. 179-189.

Official URL:

http://dx.doi.org/10.1016/j.tca.2006.03.002

Abstract

The carbonation profile of material taken at various depths in a lime mortar specimen has been detd. at different times from manuf. using a novel, high-speed thermogravimetric anal. (TGA) method. While conventional phenolphthalein staining suggests a sharp boundary between carbonated and non-carbonated regions, the new TGA technique shows that up to 15% (wt./wt.) of portlandite remains uncarbonated at the exterior of the mortar and that the extent of carbonation declines linearly over up to 15 mm into the interior. The technique demonstrates the possibility of identifying the presence of Liesegang patterns by measuring variations in the concn. of Ca(OH)2 through the depth profile. [on SciFinder (R)]

Details

Item Type	Articles
Creators	Lawrence, R.M.H., Mays, T. J., Walker, P. and D'Ayala, D.
DOI	10.1016/j.tca.2006.03.002
Uncontrolled Keywords	uses (uses) (detn. of carbonation profiles in non-hydraulic lime mortars using thermogravimetric anal.), mortar, lime mortar carbonation profile thermogravimetric analysis, unclassified), pep (physical, thermogravimetric analysis (detn. of carbonation profiles in non-hydraulic lime mortars using thermogravimetric anal.), carbonation, cps (chemical process), lime role, proc (process), engineering or chemical process), nuu (other use
Departments	Faculty of Engineering & Design > Architecture & Civil Engineering Faculty of Engineering & Design > Chemical Engineering
Research Centres	BRE Centre in Innovative Construction Materials
Refereed	Yes
Status	Published
ID Code	868

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