Chemical and mineralogical characterization of historic mortar from the 17th century Franciscan Convent of Ipojuca: contributions toward the reconstruction of the binder:aggregate ratio Micael Justino, Yeda Viera Póvoas, Valdecir Quarcioni, Raphael Britto Revista Materia, 2026 RESUMO Um edifício histórico integra diferentes tipos de alvenaria, texturas e características. Tais características possuem dependência de vários fatores. Por guardar valores culturais, históricos e científicos, os restauros de argamassas históricas não podem ser realizados sem uma minuciosa análise. Portanto, se faz necessário uma caracterização detalhada levando em conta a estrutura da argamassa histórica. O objetivo deste trabalho é a caracterização química e mineralógica de exemplares de argamassas históricas coletados no Convento franciscano localizado na cidade de Ipojuca, estado de Pernambuco, Brasil. Os resultados contribuirão para a reconstituição do traço da argamassa original. Para tanto, foi realizada análise química por via úmida, empregando-se técnicas de gravimetria e titulometria de acordo com o Método IPT, além de ensaios de termogravimetria (TGA). Os resultados apontam para uma argamassa tendo a cal como ligante e agregado silicoso. A análise química sugere que as amostras internas se tratam de argamassas à base de cal hidráulica com traços 1:8,1 e 1:7,5, enquanto as amostras externas argamassas à base de cal magnesiana com traço 1:3, 1:3,2 e 1:5,8. Os resultados podem oferecer uma contribuição significativa para na confecção de uma argamassa de restauro compatível, evitando-se retrabalhos ou manifestações patológicas que descaracterizem o monumento.
Polymer-modified mortar flexibility of the masonry-concrete structure interface Paula Gabriele Vieira Pedrosa Florido, Alberto Casado Lordsleem, Yêda Vieira Póvoas Case Studies in Construction Materials, 2024 High crack occurrences at the masonry-infilled wall partition-reinforced concrete structure interface is a problem that challenges the Brazilian construction process. Improving the mortar’s flexibility is suggested as a potential solution, but it's still not widely known. This paper evaluates industrialized mortar properties modified with four polymers and one plasticizer additive. The research methodology consisted of an experimental investigation related to the mortar properties using styrene-acrylic copolymer (SAE), polyvinyl acetate copolymer (PVAc), styrene-butadiene copolymer (SBR), white glue PVA (polyvinyl acetate), and a sulfated ethoxylated fatty alcohol salt plasticizer additive. The polymers were used in addition to (4%, 5% and 8%) and instead of (4% and 5%) the amount of water established by the manufacturer of the reference mortar, while the amount of additive used was 0.08%. The investigation characterization considered the fresh and hardened conditions, especially, the flexibility evaluation, and tests of elasticity modulus and transverse deformation were carried out, in addition to scanning electron microscopy (SEM). The results showed that there was an elasticity modulus reduction of all mixtures compared with the reference mortar without modification. The transverse deformation results range from a minimum of 0.23 mm (SBR) to a maximum of 0.94 mm (SAE). Regarding SEM, the tests with polymers have smoother and less porous surfaces. The mortar flexibility performance with different additive contents is the main contribution of this research.
Flaw recognition in reinforced concrete bridges using infrared thermography: A case study Joaquin Humberto Aquino-Rocha, Yêda Vieira Póvoas, Pedro Igor Bezerra-Batista Revista Facultad De Ingenieria, 2024 Infrared thermography is a non-destructive test that is increasingly used in the inspection of existing buildings, bridges, and civil works. However, its practice is limited due to the influence of environmental conditions on the results of the test. The present study aims to evaluate the methodology of the test through the inspection of existing reinforced concrete bridges in Recife, Brazil. This city presents different environmental conditions from those reported in the literature, a high ambient temperature and relative humidity. The study comprises the inspection of five bridges in two days, analyzing their superstructure and infrastructure separately. The results show that flaw recognition is possible through the temperature gradient between imperfect and intact regions. Thus, variation in temperature greater than 0.3 °C allows awareness of the problem. The results behavior is different based on the bridge section inspected. The defects in the bridge superstructure are presented as positive thermal gradients. On the other hand, bridge infrastructure’s deficiencies are shown as negative thermal gradients. Although the technique presents several advantages for the inspection, the results must be analyzed in detail to avoid false detections, which may compromise the correct diagnosis of the bridge structures.
Parameters of thermal performance of plaster blocks: Experimental analysis Pedro Igor Bezerra Batista, Joaquin Humberto Aquino Rocha, Yêda Vieira Póvoas Materiales De Construccion, 2023 This work aims to obtain parameters of thermal performance of various types of plaster blocks for vertical sealing. The methodology consisted of making test elements with 8 types of plaster blocks, in addition to plasterboard of different densities. Thermal resistance, transmittance, capacity, and delay were calculated, according to the Brazilian standard NBR 15220. Thermal behavior tests were carried out with controlled heating through a heat source, digital thermometer, infrared thermography, and an instrumented thermal chamber developed for this work. The experimental results corroborated with the trend indicated by the calculated parameters. The massive and hollow blocks of 100 mm had the best results followed by the 76 mm hollow blocks. The 50- and 70-mm massive blocks were among those with the worst thermal behavior. The study through the thermal chamber and real test elements associated with the normative methods allowed the practical verification regarding the thermal behavior of the components.
Pervious concrete pavement system at polytechnic school of university of pernambuco, Brazil: Product design conception Electronic Journal of Geotechnical Engineering, 2016
Influence of calcined gypsum residue in the heat of hydration of the plaster Electronic Journal of Geotechnical Engineering, 2014
Utilization of the infrared thermography for the verification of the ceramic coating detachment Electronic Journal of Geotechnical Engineering, 2014
RECENT SCHOLAR PUBLICATIONS
Caracterização química e mineralógica de argamassa histórica do Convento Franciscano de Ipojuca do século XVII: contribuições para reconstituição de traço M Justino, YV Póvoas, V Quarcioni, R Britto Matéria (Rio de Janeiro) 31, e20250521 , 2026 2026
Chemical and mineralogical characterization of historic mortar from the 17th century Franciscan Convent of Ipojuca: contributions toward the reconstruction of the binder … M Justino, YV Póvoas, V Quarcioni, R Britto Matéria (Rio de Janeiro) 31, e20250521 , 2026 2026
SEGURANÇA DE GUARDA-CORPOS DE EDIFICAÇÃO: CENÁRIO DE AVALIAÇÃO DE DESEMPENHO NO NORDESTE DO BRASIL JVPS Veríssimo, YV Póvoas, W de Albuquerque Soares, AJ da Costa WORKSHOP DE TECNOLOGIA DE PROCESSOS E SISTEMAS CONSTRUTIVOS 5 , 2025 2025
Thermodynamic characteristics of hydrogen bonding formation in gypsum-based materials and its effects on mechanical performance DBP Silva, NB Lima, JEC Soares, SD Jesus, BS Teti, RC Manta, ... Construction and Building Materials 470, 140666 , 2025 2025
Inspeção de manifestações patológicas e mapa de danos em fachadas de um Edifício Universitário GFC Campelo, YV Póvoas, JM de Moura Júnior, JM de Castro Rodrigues, ... Revista de Engenharia e Pesquisa Aplicada 10 (1), 23-32 , 2025 2025
Implementação do BIM na gestão de obras públicas em Recife-PE: desafios e perspectivas L Saruhashi, M Mendonça, P Torres, L Oliveira, S Melhado, ... Encontro nacional de tecnologia do ambiente construído 20, 1-11 , 2024 2024 Citations: 2
Inovação em segurança: desenvolvimento de ancoragem em estruturas de concreto armado como solução para trabalhos em altura MM Barbosa, JT da Silva Muniz, MM Barbosa, MM Barbosa, AJ da Costa, ... ENCONTRO NACIONAL DE TECNOLOGIA DO AMBIENTE CONSTRUÍDO 20, 1-13 , 2024 2024
Infrared thermography: detection of hidden manifestations on ceramic cladding facades: Termografia infravermelha: detecção de manifestações ocultas em fachada de revestimento … P Daltro, YV Póvoas Concilium 24 , 2024 2024
Polymer-modified mortar flexibility of the masonry-concrete structure interface PGVP Florido, AC Lordsleem Jr, YV Povoas Case Studies in Construction Materials 20, e03225 , 2024 2024 Citations: 6
Flaw recognition in reinforced concrete bridges using infrared thermography: A case study JH Aquino-Rocha, YV Póvoas, PI Bezerra-Batista Revista Facultad de Ingeniería Universidad de Antioquia, 99-109 , 2024 2024 Citations: 3
O USO DE PAVIMENTOS PERMEÁVEIS COMO MITIGAÇÃO DE ALAGAMENTOS EM GRANDES CENTROS URBANOS JMT ANTONINO, YV PÓVOAS, M MOURA PERIÓDICO TÉCNICO E CIENTÍFICO CIDADES VERDES Учредители: ANAP-Associacao … , 2024 2024
INFLUÊNCIA DA UTILIZAÇÃO DE FIBRAS METÁLICA E SINTÉTICAS NA RESISTÊNCIA DO CONCRETO J SIMÕES, RBM LINS, YV PÓVOAS, ECB MONTEIRO, W SOARES PERIÓDICO TÉCNICO E CIENTÍFICO CIDADES VERDES Учредители: ANAP-Associacao … , 2024 2024
Thermal Behaviour of Hydrofugated Plaster Block Masonry with Variation of Coating Thickness JR de Arruda Cavalcanti, PIB Batista, YV Póvoas, JHA Rocha Journal of Building Technology 6 (2), 2717-5103 , 2024 2024
Combining ultrasonic testing, infrared thermography, and stereoscopy to unveil characteristics of the adhesion capacity of metakaolin plastering mortars NB Lima, HCB Nascimento, P Vilemen, LBT Santos, M Pontes, ... Construction and Building Materials 408, 133829 , 2023 2023 Citations: 4
Enhancing the mechanical performance of plastering mortars with low levels of multilayer graphene and their chemical, structural, and microstructural characteristics CF Nascimento, FB Barros, RC Manta, HCB Nascimento, NB Lima, ... Journal of Building Engineering 80, 107966 , 2023 2023 Citations: 6
Estudo das propriedades do gesso de fundição com adição de aditivo hidrofugante KPBA Lima, DBP Silva, ALX Cunha, KVM Cavalcanti, FB Lima, ... Ambiente Construído 23 (4), 273-287 , 2023 2023 Citations: 2
Extensão Universitária com potencial de reduzir a evasão no curso de Engenharia Civil:: SlumPE GT Vasconcelos, YV Póvoas Conecte-se! Revista Interdisciplinar de Extensão 7 (13), 86-104 , 2023 2023 Citations: 1
INVESTIGAÇÃO DE MANIFESTAÇÕES PATOLÓGICAS E ELABORAÇÃO DE MAPA DE DANOS DAS FACHADAS DO BLOCO B DA ESCOLA POLITÉCNICA DE PERNAMBUCO: ESTUDO DE CASO JM de Castro Rodrigues, JM de Moura Júnior, GFC Campelo, ... REVISTA FOCO 16 (5), e1846-e1846 , 2023 2023
Analysis of pathological manifestations through damage map: case study in Buildings I and K of the Polytechnic School of Pernambuco VFB de AZEVEDO, JM de MOURA JÚNIOR, BLC SANTOS, WW SILVA, ... 2023
A chemical approach to the adhesion ability of cement-based mortars with metakaolin applied to solid substrates NB Lima, D Silva, P Vilemen, HCB Nascimento, F Cruz, TFA Santos, ... Journal of Building Engineering 65, 105643 , 2023 2023 Citations: 15
MOST CITED SCHOLAR PUBLICATIONS
Cement-based materials: Pozzolanic activities of mineral additions are compromised by the presence of reactive oxides R Berenguer, N Lima, L Pinto, E Monteiro, Y Povoas, R Oliveira, ... Journal of Building Engineering 41, 102358 , 2021 2021 Citations: 61
Detection of delaminations in sunlight-unexposed concrete elements of bridges using infrared thermography JHA Rocha, YV Póvoas, CF Santos Journal of Nondestructive Evaluation 38 (1), 8 , 2019 2019 Citations: 49
Infrared thermography as a non-destructive test for the inspection of reinforced concrete bridges: A review of the state of the art JHA Rocha, YV Póvoas Revista Alconpat 7 (3), 200-214 , 2017 2017 Citations: 39
Evaluation of the infrared thermography technique for capillarity moisture detection in buildings JHA Rocha, CF Santos, YV Póvoas Procedia Structural Integrity 11, 107-113 , 2018 2018 Citations: 36
Influência da adição de resíduo de gesso no calor de hidratação da argamassa de revestimento interno LF Bernhoeft, AD Gusmão, YVP Tavares Ambiente Construído 11, 189-199 , 2011 2011 Citations: 29
Producing a gypsum-based self-leveling mortar for subfloor modified by polycarboxylate admixture (PCE) DBP Silva, NB Lima, VME Lima, AML Estolano, HCB Nascimento, ... Construction and Building Materials 364, 130007 , 2023 2023 Citations: 28
The role of hydrogen bonds on the mechanical properties of cement-based mortars applied to concrete surfaces RA Berenguer, NB Lima, VME Lima, AML Estolano, YV Póvoas, ... Cement and Concrete Composites 115, 103848 , 2021 2021 Citations: 25
Detecção de infiltração em áreas internas de edificações com termografia infravermelha: estudo de caso JHA Rocha, CF Santos, JB Oliveira, LKS Albuquerque, YV Póvoas Ambiente Construído 18 (4), 329-340 , 2018 2018 Citations: 22
La termografía infrarroja como un ensayo no destructivo para la inspección de puentes de concreto armado: Revisión del estado del arte JHA Rocha, YV Póvoas Revista Alconpat 7 (3), 200-214 , 2017 2017 Citations: 22
Utilização da termografia infravermelha para detecção de focos de umidade em paredes internas de edificações CF Santos, JHA Rocha, YV Póvoas Ambiente Construído 19, 105-127 , 2019 2019 Citations: 21
Influence of the partial substitution of fine aggregate by granite powder in mortar on the process of natural carbonation JL da Silva, DBC Campos, AC Lordsleem Jr, YV Povoas Waste Management & Research 38 (3), 254-262 , 2020 2020 Citations: 17
A chemical approach to the adhesion ability of cement-based mortars with metakaolin applied to solid substrates NB Lima, D Silva, P Vilemen, HCB Nascimento, F Cruz, TFA Santos, ... Journal of Building Engineering 65, 105643 , 2023 2023 Citations: 15
Reaproveitamento do resíduo de gesso na execução de revestimento interno de vedação vertical YVP Tavares, AC Lordsleem Júnior, IBTA Schmitz, VM John Ambiente Construído 10, 103-119 , 2010 2010 Citations: 15
Recycled gypsum block: development and performance CV Santana, YV Póvoas, DGC Silva, FA Miranda Ambiente Construído 19, 45-58 , 2019 2019 Citations: 13
Detection of precipitation infiltration in buildings by infrared thermography: A case study JHA Rocha, CF Santos, YV Póvoas Procedia Structural Integrity 11, 99-106 , 2018 2018 Citations: 12
Tempo em aberto da argamassa colante: método de medida e influência dos aditivos HEC e resina PVAc YV Póvoas São Paulo 260 , 1999 1999 Citations: 12
Influência da perda de água por evaporação na resistência de aderência entre argamassa colante e placa cerâmica YV Póvoas, VM John, MA Cincotto Ambiente Construído 2 (2), 7-18 , 2002 2002 Citations: 11
Análise da Profundidade de Fissuras em Concreto com Termografia Infravermelha JHA Rocha, M Silva, Y Póvoas, E Monteiro Revista de Engenharia e Pesquisa Aplicada 2 (3) , 2017 2017 Citations: 10
Avaliação da formação de" película" na argamassa colante e sua influência na adesão YV Póvoas, VM John 2005 Citations: 10
Loss of mass, structural, and thermodynamic properties of concretes under rainy conditions NB Lima, RVA Junior, MKDL Belarmino, AML Estolano, RC Manta, ... Journal of Molecular Structure 1176, 622-632 , 2019 2019 Citations: 7
