6533b835fe1ef96bd129f463

RESEARCH PRODUCT

Thermal and infrared spectroscopic characterization of historical mortars

Paavo PerämäkiHannu RönkkömäkiLilli PaamaI. Pitkänen

subject

Materials scienceInfraredInductively coupled plasma atomic emission spectroscopyAnalytical chemistryInfrared spectroscopyPhysical and Theoretical ChemistryMortarInductively coupled plasmaFourier transform infrared spectroscopyCondensed Matter PhysicsThermal analysisInstrumentationCharacterization (materials science)

description

Abstract The characterization of historical mortars was performed by thermal analysis (TG-DTG), simultaneous infrared spectroscopy (TG-FTIR) and inductively coupled plasma atomic emission spectrometry (ICP-AES). The samples were taken from St. John Church (Tartu, Estonia), built in the 13th–14th centuries. The analyses are important for the restoration of the church. In reality, mortar is a very difficult system, the lime is accompanied with different hydraulic components. TG-DTG analysis and FTIR methods can be used to identify various components of mortar and to observe the reactions associated with the controlled heating at 25–900°C in dynamic air and nitrogen atmosphere. The elemental composition of the acid-soluble components (ASC) was determined by using the ICP-AES techniques.

https://doi.org/10.1016/s0040-6031(98)00421-3