Characterization and Analysis of the Mortars of the Church of Santo Domingo in Quito (Ecuador)

The religious art of the Dominican order is reflected in Santo Domingo Church, which was built between 1541 and 1688. This work of heritage architecture, one of the first to be built in the colonized city, was affected by multiple earthquakes, interventions, and constructions that have not been clearly recorded. A total of 13 samples were taken from the mortar inside the cloister, central nave, and side chapel, following the minor destruction-testing protocols and standards suggested by the research team. The analysis included mineral characterization studies and quantitative analysis by X-ray diffraction, petrographic, and scanning electron microscopy with microanalysis of the samples. The results showed the presence of volcanic aggregates and lime mortars, mortars of rustic composition and coarse manufacture. The results of mineralogical data and texture have allowed us to corroborate the historical information described by the chroniclers, to date relatively studied sites and to establish a hypothesis of constructive stages.