Effect of cyclic wetting and drying on microstructure, composition and length changes of lime-based plasters

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F19%3A00508679" target="_blank" >RIV/61388980:_____/19:00508679 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21110/19:00332833

Result on the web

<a href="http://hdl.handle.net/11104/0299516" target="_blank" >http://hdl.handle.net/11104/0299516</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cemconcomp.2019.103411" target="_blank" >10.1016/j.cemconcomp.2019.103411</a>

Result language

angličtina

Original language name

Effect of cyclic wetting and drying on microstructure, composition and length changes of lime-based plasters

Original language description

Plasters as surface layers of building structures are often exposed to cyclic wetting and drying during their service life. In this paper, the impact of cyclic wetting and drying on microstructure, composition, and length changes of lime-based plasters is investigated using mercury intrusion porosimetry, optical microscopy, qualitative and quantitative X-ray diffraction analysis, simultaneous thermal analysis, and contact dilatometry. Lime-cement- and lime-metakaolin plasters as typical representatives of this group are saturated by water at first and then subjected to five consecutive drying-wetting cycles. Hydration processes, together with carbonation and possible partial dissolution of portlandite and calcite after immersion of samples in water, are identified as the most important reactions affecting the microstructure and composition of the lime-cement plaster, while for the lime-metakaolin plaster the pozzolanic reaction resulting in monocarbonate production, together with possible portlandite and calcite dissolution, are probably the most significant factors. The measurements of hygric strain show that the wetting-drying process is near-reversible since the beginning of the second cycle, whereas capillary pressure is the dominant shrinkage/swelling mechanism.

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

10402 - Inorganic and nuclear chemistry

Project

<a href="/en/project/GA17-01365S" target="_blank" >GA17-01365S: Modelling and experimental verification of the effect of freeze-thaw cycles on the degradation of porous building materials</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

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

Name of the periodical

Cement and Concrete Composites

ISSN

0958-9465

e-ISSN

—

Volume of the periodical

104

Issue of the periodical within the volume

NOV

Country of publishing house

GB - UNITED KINGDOM

Number of pages

11

Pages from-to

103411

UT code for WoS article

000501649500073

EID of the result in the Scopus database

2-s2.0-85071874804