Engineering properties of ancient masonry materials in Thailand and substitution materials for historical structures preservation

Conference proceedings article

Authors/Editors

Strategic Research Themes

Innovative Materials, Manufacturing and Construction (Strategic Research Themes)

Publication Details

Author list: Mahasuwanchai P., Wonganan N., Athisakul C., Tangchirapat W., Sahamitmongkol R., Leelataviwat S.

Publisher: IOP Publishing

Publication year: 2020

Volume number: 463

Issue number: 1

ISSN: 1755-1307

eISSN: 1755-1315

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85083440993&doi=10.1088%2f1755-1315%2f463%2f1%2f012077&partnerID=40&md5=38755eb280f37553c44fe4a6fff1a210

Languages: English-Great Britain (EN-GB)

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Abstract

This paper presents the engineering properties of ancient masonry materials and substitution materials for the preservation of Thai historical structures. The study was divided into 2 parts. For the first part, the ancient masonry materials including brick and mortar were collected from various historical sites in Bangkok and Ayutthaya provinces. The engineering properties of masonry materials were evaluated in laboratory such as compressive strength, density, chemical compositions, porosity, and water absorption. The second part was investigation to find the suitable substitution materials for historical repair mortars. Fly ash was used as a pozzolanic materials to partial replace slaked lime for making historical repair mortar. The engineering properties of historical repair mortar containing were also evaluated and compared with the ancient masonry materials obtained from the first part. The binder to sand ratio was controlled at 1:3 by weight. The slaked lime was substituted by fly ash in the ranges of 10-30% by weight. The experimental results showed that the use fly ash to a partial replace slaked lime could decrease the setting time of historical repair mortar. The compressive strength of historical repair mortars with fly ash were ranged from 1.54-2.22 MPa, depending on the level of replacement, while that of the ancient masonry materials had the compressive strength of 1.88-2.71 MPa. © 2020 Institute of Physics Publishing. All rights reserved.

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