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The influence of aggregate texture, morphology and grading on the carbonation of non-hydraulic (aerial) lime-based mortars

A. Arizzi and G. Cultrone
The influence of aggregate texture, morphology and grading on the carbonation of non-hydraulic (aerial) lime-based mortars
Quarterly Journal of Engineering Geology and Hydrogeology (October 2013) 46 (4): 507-520

Abstract

This paper reports on investigations of the influence of the texture, morphology and grading of fine aggregates on the microstructure and macroscopic properties of aerial lime-based mortars. To understand the role of the aggregate in the outcome of the carbonation process, mortars set with two aggregates were cured for 2 years under standard conditions and studied at different time intervals by means of textural and mineralogical analyses and hygric and physical-mechanical tests. Both the initial and further development of the mortar properties are strongly influenced by compositional and textural differences induced by the type of aggregate used. Results show that a calcareous aggregate with continuous grading, consisting of sub-angular grains with a rough surface, induced better textural and physical-mechanical properties than a siliceous aggregate, with polished surface grains and less continuous grading. The use of a calcareous aggregate also provided compositional continuity between the binder and aggregate, apparently promoting further improvement in carbonation and physical-mechanical properties. Further work to quantify this influence is recommended.


ISSN: 1470-9236
EISSN: 2041-4803
Serial Title: Quarterly Journal of Engineering Geology and Hydrogeology
Serial Volume: 46
Serial Issue: 4
Title: The influence of aggregate texture, morphology and grading on the carbonation of non-hydraulic (aerial) lime-based mortars
Affiliation: Universidad de Granada, Departamento de Mineralogia y Petrologia, Granada, Spain
Pages: 507-520
Published: 20131031
Text Language: English
Publisher: Geological Society of London, London, United Kingdom
References: 55
Accession Number: 2013-091469
Categories: Engineering geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 5 tables
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2022, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 201353
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