Determination of the Salt distribution in the Lime-based Mortar Samples Using XRF and SEM-EDX Characterization

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F23%3APU145685" target="_blank" >RIV/00216305:26110/23:PU145685 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1007/978-3-031-31472-8_43" target="_blank" >http://dx.doi.org/10.1007/978-3-031-31472-8_43</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/978-3-031-31472-8_43" target="_blank" >10.1007/978-3-031-31472-8_43</a>

Result language

angličtina

Original language name

Determination of the Salt distribution in the Lime-based Mortar Samples Using XRF and SEM-EDX Characterization

Original language description

Although, the salt crystallization is one of the most common causes of the deterioration of lime-based mortars, testing of their resistance to the soluble salt action has not yet been standardized. The problems following the development of the globally accepted testing method are, among others: defining the type of mortar samples, ways of samples’ contamination, the type and the concentration of the salt solutions used, environmental conditions during testing, determination of the damage development and the durability assessment. Another task of the testing method is to explain and connect the processes developing in the materials when they are applied in laboratory and real conditions. In this paper, soluble salt resistance testing of lime mortars on the composite samples is presented. The main focus of the paper is on the determination of the salt distribution in this type of samples after the five wetting and drying cycles. Samples consisted of two lime rendering layers (inner – 1/3 and outer -1/1), both prepared according to the experiences found in the literature for these types of lime mortars when applied on historical structures, placed on the natural stone bases. They were cured in laboratory conditions for 90 days, before drying and exposing to soluble salts action. Two types of 10% salt solutions were used for the test: sodium-chloride and sodium-sulfate. Salt contamination was performed by capillary action only in the first cycle, while in the other cycles samples were wetted by deionized water. After the finalization of the cycles, the detached pieces of mortar and efflorescence were removed from the samples. One of the samples from both groups were then cut in two halves, from which one was used for X-Ray Fluorescence (XRF) and another for Scanning Electron Microscopy with Energy Dispersive X-Ray Analysis (SEM – EDX) characterization. For the XRF analysis samples were divided into four layers, and then crushed and sieved through 0.5 mm sieve before tes

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20101 - Civil engineering

Project

<a href="/en/project/GA21-06582S" target="_blank" >GA21-06582S: Experimental and computational analysis of salt transport, accumulation, and crystallization in non-hydrophobized rendering mortars</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2023

Confidentiality

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

Article name in the collection

Conservation and Restoration of Historic Mortars and Masonry Structures

ISBN

978-3-031-31472-8

ISSN

2211-0844

e-ISSN

—

Number of pages

12

Pages from-to

542-553

Publisher name

Springer Cham

Place of publication

neuveden

Event location

Ljubljana

Event date

Sep 21, 2022

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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