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Vol 16, Issue 1, 2024
Pages: 400 - 415
Research paper
Civil Engineering Editor: Snježana Maksimović
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Published: 12.06.2024. Research paper Civil Engineering Editor: Snježana Maksimović

SOME PHYSICAL PROPERTIES OF LIGHTWEIGHT MORTARS WITH EXPANDED VERMICULITE

By
Jakob Šušteršič ,
Jakob Šušteršič
Contact Jakob Šušteršič

IRMA Institute for Research in Materials and Applications, Trzin, Slovenia

Violeta Bokan Bosiljkov ,
Violeta Bokan Bosiljkov

Faculty of Civil and Geodetic Engineering, University of Ljubljana, Ljubljana, Slovenia

Aljoša Šajna ,
Aljoša Šajna

ZAG Slovenian National Building and Civil Engineering Institute, Ljubljana, Slovenia

Bojan Hertl ,
Bojan Hertl

ARAO - Agency for Radioactive Waste Management, Krško, Slovenia

Rok Ercegovič
Rok Ercegovič

IRMA Institute for Research in Materials and Applications, Trzin, Slovenia

Abstract

Expanded vermiculite was added to the cement-lime mortar at 10%, 20% and 30%, which reduced the density of the hardened mortar (HM) without expanded vermiculite (EV) by an average of 8,3% for the HM with 10% EV, 14,7% for the HM with 20% EV and 24,2% for the HM with 30% EV. Compressive and flexural strength and static modulus of elasticity were investigated and the relationships between these properties were determined. The effect of the added amount of EV on: total porosity, air void content and capillary suction of HM according to SIA 262, Appendix A; capillary water absorption; gas permeability and air permeability; water permeability and internal freeze/thaw resistance up to 200 cycles was investigated and determined.

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