Estimation of the linseed oil content in historic lime mortar

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F23%3A00565230" target="_blank" >RIV/68378297:_____/23:00565230 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21110/23:00362473 RIV/68407700:21720/23:00362473

Result on the web

<a href="https://doi.org/10.1007/s10973-022-11792-9" target="_blank" >https://doi.org/10.1007/s10973-022-11792-9</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10973-022-11792-9" target="_blank" >10.1007/s10973-022-11792-9</a>

Result language

angličtina

Original language name

Estimation of the linseed oil content in historic lime mortar

Original language description

Vegetable oils (e.g. linseed or tung) were used as lime mortar admixtures in order to increase the mortar durability (due to the water repealing effect) and/or to prolong the mortar’s workability. The present paper aims to investigate the possibilities of thermal analysis to estimate the linseed oil content in a historic mortar. A set of model mortars containing Ca(OH)2, CaCO3 and variable amount of linseed oil was studied by methods usually used for mortars characterization: thermogravimetry with evolved gas analysis by mass spectroscopy (TG EGA-MS), FTIR spectroscopy (Fourier transform infrared spectroscopy) and XRD (powder X-ray diffraction). Oil admixed in lime mortar undergoes two principal transformations: saponification to Ca carboxylates and polymerization (drying). The products of the oil transformation are thermally decomposing during the thermal analysis experiment, but unfortunately in the same temperature range as Ca(OH)2—common mortar component—does. A calculation procedure which enables to determine content of both Ca(OH)2 and “oil products” on base of thermogravimetry was proposed. As an alternative, an estimation of oil content based on EGA-MS results for m/z 95 ion was developed. Finally, total organic carbon (TOC) may be also used if any other organics are not present. These three approaches were used for the oil content estimation in the sample of historic mosaic mortar. The result obtained by TG EGA-MS approach was found to be the most realistic.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20501 - Materials engineering

Project

<a href="/en/project/GA18-13525S" target="_blank" >GA18-13525S: Modern mosaic mortars in a microscope – methods for their materials characterization and degradation studies</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Thermal Analysis and Calorimetry

ISSN

1388-6150

e-ISSN

1588-2926

Volume of the periodical

148

Issue of the periodical within the volume

3

Country of publishing house

HU - HUNGARY

Number of pages

13

Pages from-to

697-709

UT code for WoS article

000886742300002

EID of the result in the Scopus database

2-s2.0-85142371304