Open AccessChemical and physical investigations of historic mortars in St. John’s Church (Cesis, Latvia)
Author(s) -
Inta Kiriloviča,
Margarita Karpe
Publication year - 2019
Publication title -
modern building materials, structures and techniques
Language(s) - English
Resource type - Conference proceedings
eISSN - 2029-9907
pISSN - 2029-9915
DOI - 10.3846/mbmst.2019.034
Subject(s) - mortar , masonry , lime , lime mortar , brick , mineralogy , archaeology , geology , materials science , metallurgy , history
This paper deals with the stone material investigation of St. John’s Church, located in Cesis, the city in centralregion of Latvia. Following aspects were considered – chemical, physical and granulometrical characterization ofhistoric mortars, as well as the level of soluble salts in the masonry. The chemical and physical properties of the historicalmortars were characterized by visual observation, granulometric analysis, classical wet chemical analysis, XRD, SEMand hydro tests. The results showed that the historic mortars are based on two types of weakly hydraulic lime – calciticand dolomitic – with brick dust additive. The main crystallized salt in the object was KNO3. The aim of the investigationwas to provide compatibility of restoration materials and sustainability of the ancient building.