Banca de DEFESA: Antonio Caio Andrade Damasceno Cavalcante

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : Antonio Caio Andrade Damasceno Cavalcante
DATE: 26/07/2023
TIME: 09:00
LOCAL: PECC
TITLE:

COMPARATIVE ANALYSIS BETWEEN PORTLAND CEMENTS USED IN CIVIL CONSTRUCTION AND CLINKER-BASED DENTAL CEMENTS

KEY WORDS:

clinker-based cements, civil construction, dentistry, comparative analysis.

PAGES: 142
BIG AREA: Engenharias
AREA: Engenharia Civil
SUBÁREA: Construção Civil
SPECIALTY: Materiais e Componentes de Construção
SUMMARY:

The use of cementitious materials is common in both civil construction and dentistry. However, there is a noticeable scarcity of research that has approached the multidisciplinary comparison between these similar materials. In light of this, the Postgraduate Programs in Structures and Civil Construction (PECC) and Dentistry (PPGODT) sought to expand the knowledge about clinker-based cements, present in both fields of knowledge, through comparisons of their respective characteristics and properties, using an interdisciplinary approach. For this purpose, this research evaluated six cementitious materials, including two used in civil construction and four used in dentistry. These cements were divided into two distinct groups: Group 1, composed of three gray cements (CP V-ARI, MTA Angelus, and MTA ProRoot), and Group 2, composed of three white cements (CP-B structural, MTA Angelus, and MTA ProRoot). In their anhydrous phase, they were evaluated through X-ray Fluorescence Spectrometry (XRF), X-ray Diffraction (XRD), Laser Particle Size Analysis, and BET Specific Surface Area tests. Subsequently, in the hydrated cements, the setting time of the six cements was determined following the ANSI-ADA dental standard (ISO 6876:2012), and the compressive strength of the pastes at 1 day of hydration was measured following the ANSI/ADA dental standard (ISO 9917:2000). Finally, the microstructure of the pastes of the six cements was evaluated through XRD analysis at 1 day of hydration. The data from these tests allowed for a comparison of the behavior of the anhydrous cements and the pastes, both individually and collectively. Adaptations to the XRF and XRD tests were necessary due to the limited availability of dental cement, and these adaptations were considered effective for the study. The results revealed a similarity in the chemical composition of the cements, with the exception of the radiopacifying agents present in the dental cements, as well as the absence of gypsum in the Angelus MTA cements, which prevented the formation of ettringite during the hydration process of these cements. Furthermore, the BET specific surface areas of the dental cements were found to be higher than those of Portland cements, while the latter exhibited higher strength, whereas the Angelus MTA cements demonstrated the lowest strengths. Thus, the comparative analyses made a significant contribution to a better understanding of the characteristics and properties of these cements.

COMMITTEE MEMBERS:
Presidente - 1734221 - JOAO HENRIQUE DA SILVA REGO
Externa ao Programa - 3342495 - TAIA MARIA BERTO REZENDE - UnBExterno à Instituição - DANIEL DA SILVA ANDRADE - UEG