Efficacy of polyacrylate latex nanodispersions as consolidation agents in porous sandstones evaluated by synchrotron X-ray computed microtomography

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F24%3A00584608" target="_blank" >RIV/68378297:_____/24:00584608 - isvavai.cz</a>

Alternative codes found

RIV/00216275:25310/24:39921801

Result on the web

<a href="https://doi.org/10.1016/j.jobe.2024.109089" target="_blank" >https://doi.org/10.1016/j.jobe.2024.109089</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jobe.2024.109089" target="_blank" >10.1016/j.jobe.2024.109089</a>

Result language

angličtina

Original language name

Efficacy of polyacrylate latex nanodispersions as consolidation agents in porous sandstones evaluated by synchrotron X-ray computed microtomography

Original language description

This research describes the effects of two innovative aqueous polyacrylate polymers on the microstructure of porous stone materials. Such latex nanodispersions have been designed (with and without fluorination) as consolidation agents and tested on two types of sandstone, namely, Prague (Mšené) and Obernkirchen, largely used as building materials for valuable Cultural Heritage objects. Quantitative description of the polymer distribution within the specimens was obtained noninvasively by adopting synchrotron radiation computed microtomography. The propagation- based phase-contrast mode was adopted to test its effectiveness in enabling the recognition of the polymers in the two matrices, which is usually hampered by their low attenuation coefficient for X-rays. Quantitative image analysis revealed significant dissimilarities in total porosity, specific surface area of pores, connectivity density and fractal dimension as a consequence of the consolidation treatments. For instance, about 7% and 3% lower porosity values were found in the consolidated Prague and Obernkirchen sandstones, respectively, with the distribution shifted towards smaller pores. Furthermore, the simulation of water transport, based on the retrieved pore network, evidenced a decrease in water permeability and diffusivity of more than one order of magnitude in the treated samples - the effect was more pronounced along the direction of penetration of the consolidating agent. Overall, both latexes exhibited similar film-forming and porefilling abilities. In general, the results highlighted the high potential of synchrotron-based 3D Xray imaging for the quantitative assessments of the porous microstructure of consolidated building materials.

Czech name

—

Czech description

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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/DH23P03OVV057" target="_blank" >DH23P03OVV057: Historical mining structures in the Vysočina region as evidence of the development of society and cultural heritage objects</a><br>

Continuities

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

Publication year

2024

Confidentiality

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

Name of the periodical

Journal of Building Engineering

ISSN

2352-7102

e-ISSN

2352-7102

Volume of the periodical

87

Issue of the periodical within the volume

June

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

14

Pages from-to

109089

UT code for WoS article

001218984100001

EID of the result in the Scopus database

2-s2.0-85188744480