Detail publikace

DURABILITY PROPERTIES OF NON-HYDROPHOBIZED LIME MORTARS WITH EXPANDED AGGREGATE: SALTS AND ICE CRYSTALLIZATION RESISTANCE

VYŠVAŘIL, M. BAYER, P. ROVNANÍKOVÁ, P.

Originální název

DURABILITY PROPERTIES OF NON-HYDROPHOBIZED LIME MORTARS WITH EXPANDED AGGREGATE: SALTS AND ICE CRYSTALLIZATION RESISTANCE

Typ

článek ve sborníku mimo WoS a Scopus

Jazyk

angličtina

Originální abstrakt

Porous pozzolanically active aggregate can be used to prepare lightweight mortars with a high ability to salt accumulation from masonry and enhanced liquid water permeability. In this study, the comparison of non-hydrophobized expanded perlite, expanded glass, and expanded clay as lightweight aggregate in air lime mortars and natural hydraulic lime mortars has been investigated with emphasis on the resistance to salts and ice crystallization. The results of frost resistance tests were expressed as frost resistance coefficient for each mortar. The salt crystallization resistance of mortars were determined using 10% Na2SO4, 3% NaCl and 3% NH4NO3 solutions. The microstructure of mortars after the testing was monitored by scanning electron microscope and amount of anions absorbed in the mortars was determined by chemical analysis. The expanded aggregate significantly improved frost resistance of the mortars. The mortars with expanded perlite and expanded clay accumulated nitrates and sulfates to a greater extent, as a result, they disintegrated earlier. The combination of the best properties showed samples with 50% sand replacement with expanded glass - they were the most frost-resistant and the most resistant to salt crystallization.

Klíčová slova

lime mortar; expanded aggregate; frost resistance; salts crystallization; porosity; microstructure

Autoři

VYŠVAŘIL, M.; BAYER, P.; ROVNANÍKOVÁ, P.

Vydáno

26. 6. 2022

Nakladatel

INEGI-Instituto de Ciência e Inovação em Engenharia Mecânica e Engenharia Industrial

Místo

Porto - Portugal

ISBN

978-989-54756-3-6

Kniha

PROCEEDINGS M2D2022, 9th International Conference on MECHANICS AND MATERIALS IN DESIGN

Strany od

451

Strany do

460

Strany počet

10

URL

https://paginas.fe.up.pt/~m2d/proceedings_m2d2022/data/papers/18218.pdf

BibTex

@inproceedings{BUT178462,
  author="Martin {Vyšvařil} and Patrik {Bayer} and Pavla {Rovnaníková}",
  title="DURABILITY PROPERTIES OF NON-HYDROPHOBIZED LIME MORTARS WITH EXPANDED AGGREGATE: SALTS AND ICE CRYSTALLIZATION RESISTANCE",
  booktitle="PROCEEDINGS M2D2022, 9th International Conference on MECHANICS AND MATERIALS IN DESIGN",
  year="2022",
  pages="451--460",
  publisher="INEGI-Instituto de Ciência e Inovação em Engenharia Mecânica e Engenharia Industrial",
  address="Porto - Portugal",
  isbn="978-989-54756-3-6",
  url="https://paginas.fe.up.pt/~m2d/proceedings_m2d2022/data/papers/18218.pdf"
}