Restoration requires the use of appropriate characterization methods and suitable new material preparation processes permit the reproduction of the original material to be as similar as possible in order to be an appropriate application method. The combination of these factors will facilitate a good restoration process. Different stuccos were taken from El Museo del Calendario, a building located in Querétaro, Mexico which was built in the 16th century. All the stucco samples were studied using the characterization process which is proposed in this article. The characterization method consisted of the use of analytical techniques, such as X‐ray diffraction, Fourier transform infrared and scanning electron microscopy. This characterization method made reproduction of the original material possible. The new material combined with new application techniques developed in situ will result in a high‐quality restoration process.

The aim of this work is analyzethe relevance of Non Destructive Technique (NDT) thermal infrared imaging (TIRI) as a way of reference to the heritage conservation.The assessment of thermography testing was done in order to evaluate the correspondence concerning the physical and chemical characterization and compatibility among original and restored plastered mortars and stuccos, considering the correlation betweenthermal emissivity values and other well-known materials characterization methods such as Fourier Transform Infrared (FTIR), X-ray diffraction (XRD) and Modulated Differential Scanning Calorimetry (MDSC) whichconclusively evidenced the appropriate assimilationof plasters and stuccosapplied inheritage conservation.

Fiber-reinforced concrete (FRC) composites to date are not fully researched with regard to the mechanical behavior of the random distribution of the fibers inside the matrix, which tend to bundle (fiber clusters). In this work we study the influence of the random distribution of fibers in the matrix by means of computer modeling applied to structural plane specimen subjected to tension loading. Increasing the tension load the failure will appear first in the weak concrete zones induced by the random distribution of inclusion elements. These failure elements are now modified as air elements, and the process goes on until collapse. As a result of this process the stress—strain plots of the sample until failure, and the stress—strain graph at the time of gradual application of the tension stress are found. We compare the obtained results with Kerner`s model. Computer modeling is achieved by the ANSYS program coupling a subroutine written in APDL language.

The Trans-Mexican Volcanic Belt (TMVB), located in central Mexico, is an area for which low to moderate seismic risk is considered. This is based on the limited instrumental data available, even though large historical earthquakes have damaged some urban centers in the past. However, site effects is an aspect that must be considered in estimating risk, because there are some instances of important amplifications that have been documented with serious effects. In this work, ambient noise and earthquake records from 90 seismic permanent and temporary stations are used to analyze site response in the TMVB. The results obtained show a heterogeneous range in the value of the fundamental frequency. When possible, a comparison was made of the results obtained from ambient noise and earthquake records. In almost all these comparisons, no significant differences were observed in terms of the fundamental frequency. However, there were some stations with a flat average HVSR ambient noise curve that contradicted earthquake data results, which showed peaks at some frequencies. Our results are a first step towards categorizing the different site responses in the TMVB but in order to provide finer details, it is necessary to improve the actual monitoring conditions.

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