Freeze-thaw resistance of pozzolanic hydrated lime mortars

Tugce Busra Su; Juliana Calabria-Holley; Ceren Ince; Richard Ball

doi:10.1016/j.conbuildmat.2023.131993

Freeze-thaw resistance of pozzolanic hydrated lime mortars

Tugce Busra Su, Juliana Calabria-Holley, Ceren Ince, Richard Ball

Middle East Technical University

Research output: Contribution to journal › Article › peer-review

10 Citations (SciVal)

Abstract

Degradation of hydrated lime mortars subjected to freezing and thawing is common in historic building conservation. The pozzolanic additions, Argical M1000, diatomite (diatomaceous earth) and brick dust, were evaluated for their ability to improve performance for up to 720 days. Pozzolanic reactions influenced the pore structure evolution, mechanical performance, and chemical reactivity of the mortar matrix. Argical-lime mortars exhibited a sudden failure, while a gradual reduction in mechanical strength was observed for mortars containing brick dust. A slower rate of failure in diatomite mortars was attributed to pore refinement, which was associated with superior freeze thaw performance. This study has advanced the current state of the art regarding how pore structure affects lime mortars’ freeze and thaw resistance. Therefore it provides spesifications on how to optimise mortars for historic masonry. A key impact is the more effective use of lime mortars for conservation, thereby
protecting heritage structures from degredation.

Original language	English
Article number	131993
Journal	Construction and Building Materials
Volume	394
Early online date	16 Jun 2023
DOIs	https://doi.org/10.1016/j.conbuildmat.2023.131993
Publication status	Published - 29 Aug 2023

Bibliographical note

Data availability
The authors have permission to share data.

Funding
This research was carried out University of Bath within a doctoral studentship provided by Republic of Türkiye Ministry of National Education.

Funding Information:
The authors would like to thank the Republic of Turkiye Ministry of National Education for funding Tugce Busra Su's PhD project and this research. The authors would like to thank helpful conservations with Alison Henry, Historic England for helpful discussions. The authors appreciated Ahmet Akin's (Middle East Technical University Northern campus) help casting and freeze and thaw conditioning of mortar specimens. The support of the following colleagues at the University of Bath is also gratefully acknowledged; Vahiddin Alperen Baki and Pooja Anil Kumar Nair for help acquiring and interpreting calorimeter data, and Prof Frank Marken (Department of Chemistry) for his help with the Chapelle test.

Keywords

Conservation
Hydrated lime mortars
Lime mortars
Pozzolan

ASJC Scopus subject areas

General Materials Science
Building and Construction
Civil and Structural Engineering

Access to Document

10.1016/j.conbuildmat.2023.131993Licence: CC BY

Cite this

@article{09c5b0b0cf0a46f9a9af6107c450a926,

title = "Freeze-thaw resistance of pozzolanic hydrated lime mortars",

abstract = "Degradation of hydrated lime mortars subjected to freezing and thawing is common in historic building conservation. The pozzolanic additions, Argical M1000, diatomite (diatomaceous earth) and brick dust, were evaluated for their ability to improve performance for up to 720 days. Pozzolanic reactions influenced the pore structure evolution, mechanical performance, and chemical reactivity of the mortar matrix. Argical-lime mortars exhibited a sudden failure, while a gradual reduction in mechanical strength was observed for mortars containing brick dust. A slower rate of failure in diatomite mortars was attributed to pore refinement, which was associated with superior freeze thaw performance. This study has advanced the current state of the art regarding how pore structure affects lime mortars{\textquoteright} freeze and thaw resistance. Therefore it provides spesifications on how to optimise mortars for historic masonry. A key impact is the more effective use of lime mortars for conservation, therebyprotecting heritage structures from degredation.",

keywords = "Conservation, Hydrated lime mortars, Lime mortars, Pozzolan",

author = "Su, {Tugce Busra} and Juliana Calabria-Holley and Ceren Ince and Richard Ball",

note = "Data availability The authors have permission to share data. Funding This research was carried out University of Bath within a doctoral studentship provided by Republic of T{\"u}rkiye Ministry of National Education. Funding Information: The authors would like to thank the Republic of Turkiye Ministry of National Education for funding Tugce Busra Su's PhD project and this research. The authors would like to thank helpful conservations with Alison Henry, Historic England for helpful discussions. The authors appreciated Ahmet Akin's (Middle East Technical University Northern campus) help casting and freeze and thaw conditioning of mortar specimens. The support of the following colleagues at the University of Bath is also gratefully acknowledged; Vahiddin Alperen Baki and Pooja Anil Kumar Nair for help acquiring and interpreting calorimeter data, and Prof Frank Marken (Department of Chemistry) for his help with the Chapelle test. ",

year = "2023",

month = aug,

day = "29",

doi = "10.1016/j.conbuildmat.2023.131993",

language = "English",

volume = "394",

journal = "Construction and Building Materials",

issn = "0950-0618",

publisher = "Elsevier",

}

TY - JOUR

T1 - Freeze-thaw resistance of pozzolanic hydrated lime mortars

AU - Su, Tugce Busra

AU - Calabria-Holley, Juliana

AU - Ince, Ceren

AU - Ball, Richard

N1 - Data availability The authors have permission to share data. Funding This research was carried out University of Bath within a doctoral studentship provided by Republic of Türkiye Ministry of National Education. Funding Information: The authors would like to thank the Republic of Turkiye Ministry of National Education for funding Tugce Busra Su's PhD project and this research. The authors would like to thank helpful conservations with Alison Henry, Historic England for helpful discussions. The authors appreciated Ahmet Akin's (Middle East Technical University Northern campus) help casting and freeze and thaw conditioning of mortar specimens. The support of the following colleagues at the University of Bath is also gratefully acknowledged; Vahiddin Alperen Baki and Pooja Anil Kumar Nair for help acquiring and interpreting calorimeter data, and Prof Frank Marken (Department of Chemistry) for his help with the Chapelle test.

PY - 2023/8/29

Y1 - 2023/8/29

N2 - Degradation of hydrated lime mortars subjected to freezing and thawing is common in historic building conservation. The pozzolanic additions, Argical M1000, diatomite (diatomaceous earth) and brick dust, were evaluated for their ability to improve performance for up to 720 days. Pozzolanic reactions influenced the pore structure evolution, mechanical performance, and chemical reactivity of the mortar matrix. Argical-lime mortars exhibited a sudden failure, while a gradual reduction in mechanical strength was observed for mortars containing brick dust. A slower rate of failure in diatomite mortars was attributed to pore refinement, which was associated with superior freeze thaw performance. This study has advanced the current state of the art regarding how pore structure affects lime mortars’ freeze and thaw resistance. Therefore it provides spesifications on how to optimise mortars for historic masonry. A key impact is the more effective use of lime mortars for conservation, therebyprotecting heritage structures from degredation.

AB - Degradation of hydrated lime mortars subjected to freezing and thawing is common in historic building conservation. The pozzolanic additions, Argical M1000, diatomite (diatomaceous earth) and brick dust, were evaluated for their ability to improve performance for up to 720 days. Pozzolanic reactions influenced the pore structure evolution, mechanical performance, and chemical reactivity of the mortar matrix. Argical-lime mortars exhibited a sudden failure, while a gradual reduction in mechanical strength was observed for mortars containing brick dust. A slower rate of failure in diatomite mortars was attributed to pore refinement, which was associated with superior freeze thaw performance. This study has advanced the current state of the art regarding how pore structure affects lime mortars’ freeze and thaw resistance. Therefore it provides spesifications on how to optimise mortars for historic masonry. A key impact is the more effective use of lime mortars for conservation, therebyprotecting heritage structures from degredation.

KW - Conservation

KW - Hydrated lime mortars

KW - Lime mortars

KW - Pozzolan

UR - http://www.scopus.com/inward/record.url?scp=85162082675&partnerID=8YFLogxK

U2 - 10.1016/j.conbuildmat.2023.131993

DO - 10.1016/j.conbuildmat.2023.131993

M3 - Article

SN - 0950-0618

VL - 394

JO - Construction and Building Materials

JF - Construction and Building Materials

M1 - 131993

ER -

Freeze-thaw resistance of pozzolanic hydrated lime mortars

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this