Produção Nacional
Vanessa Carina Heinrichs Chirico Oliveira, Bruno Luís Damineli, Vahan Agopyan, Vanderley Moacyr John,
A maior parte das emissões do concreto originam-se na produção do cimento. A estratégia tradicional de minimização da pegada de CO2 tem privilegiado o grau de substituição do clínquer. No momento atual estima-se que a indústria cimenteira utilize toda a escória de alto forno gerada no país e a quase totalidade das cinzas de melhor qualidade. Desta forma, aumentando a demanda de cimento, a produção de clínquer aumenta, e o teor de adições no clínquer diminui dentro das extensas faixas permitidas ...
Tópico(s): Education and Public Policy
2014 - Associação Nacional de Tecnologia do Ambiente Construído | Ambiente Construído
Holmer Savastano, Vanderley Moacyr John, Vahan Agopyan, Al Moslemi,
Tópico(s): Architecture and Computational Design
2010 - Elsevier BV | Construction and Building Materials
Produção Nacional
Revisado por pares
Leila Aparecida Castro Motta, Vanderley Moacyr John, Vahan Agopyan,
The cross section variation, mechanical properties and moisture absorption of vegetable sisal fibres compressed at temperatures of 120, 160 and 200 °C were determined and compared with values obtained in non-compressed fibres. The thermo-mechanical treatment carried out resulted in a relevant increasing of fibre stiffness (elastic modulus) and decreasing of fibre moisture absorption.
Tópico(s): Bamboo properties and applications
2010 - Trans Tech Publications | Materials science forum
Produção Nacional
Revisado por pares
Eduardo Marcelo Bezerra, Ana Paula Joaquim, Holmer Savastano, Vanderley Moacyr John, Vahan Agopyan,
The influence of the matrix formulation and different amounts of synthetic fiber on physical and mechanical performance of asbestos free fiber cement was evaluated. Polyvinyl alcohol (PVA) fiber was tested as reinforcement in combination with mechanical and kraft cellulose pulps. Silica-fume, metakaolin and fly ash were used as pozzolanic additions in proportions up to ∼14% by mass in combination with ordinary Portland cement and carbonatic filler. Bulk densities of composites varied from 1.5 to 1. ...
Tópico(s): Natural Fiber Reinforced Composites
2006 - Elsevier BV | Cement and Concrete Composites
Produção Nacional
Revisado por pares
Vanderley Moacyr John, Maria Alba Cincotto, Christer Sjöström, Vahan Agopyan, Cláudia Terezinha de Andrade Oliveira,
A comparative study of the microstructure of both new and in-use aged blast-furnace slag cement coir reinforced composite was performed. Aged samples came from internal and external walls of a 12-year-old house, built in São Paulo. The panels of the house were produced using 1:1.5:0.504 (binder: sand: water, by mass) mortar reinforced with 2% of coir fibre by volume. The binder was blast-furnace slag activated by 2% of lime and 10% of gypsum. Fibres were removed from the composite and subsequently ...
Tópico(s): Concrete and Cement Materials Research
2004 - Elsevier BV | Cement and Concrete Composites
Produção Nacional
Revisado por pares
Vahan Agopyan, Holmer Savastano, Vanderley Moacyr John, Maria Alba Cincotto,
Vegetable fibres, which are widely available in most developing countries, can be used as convenient materials for brittle matrix reinforcement, even though they present relatively poor durability performance. Taking into account the fibres mechanical properties, with an adequate mix design, it is possible to develop a material with suitable properties for building purposes. In order to improve the durability of vegetable fibres, this paper presents the approach adopted in the research which is ...
Tópico(s): Innovative concrete reinforcement materials
2004 - Elsevier BV | Cement and Concrete Composites
Produção Nacional
Revisado por pares
Holmer Savastano, Vahan Agopyan, Adriana M. Nolasco, Lia Lorena Pimentel,
Tópico(s): Innovative concrete reinforcement materials
1999 - Elsevier BV | Construction and Building Materials
Produção Nacional
Revisado por pares
Holmer Savastano, Vahan Agopyan,
The transition zone of short filament fibres randomly dispersed in a paste of ordinary Portland cement was analysed. Composites with vegetable fibres (malva, sisal and coir) were compared with those with chrysotile asbestos and polypropylene fibres. The composites were prepared for testing at the ages of 7, 28, 90 and 180 days. The water-cement ratio was 0.38; at the age of 28 days specimens with wc = 0.30 and a wc = 0.46 were also tested. Mechanical tests evaluated the composite tensile strength and ...
Tópico(s): Tree Root and Stability Studies
1999 - Elsevier BV | Cement and Concrete Composites
Produção Nacional
Revisado por pares
Vahan Agopyan, Vanderley Moacyr John,
The tests carried out in Brazil indicate that a composite material including vegetable fibres of the coir type are suitable for outdoor use in environments similar to that found in São Paulo.
Tópico(s): Natural Fiber Reinforced Composites
1992 - Taylor & Francis | Building Research & Information
Produção Nacional
Revisado por pares
Holmer Savastano, Vanderley Moacyr John, Vahan Agopyan, Osny Pellegrino Ferreira,
Tópico(s): Innovations in Concrete and Construction Materials
2002 - Springer Science+Business Media | Materials and Structures
Produção Nacional
Revisado por pares
Keiichi Uemoto, Vahan Agopyan, Fúlvio Vittorino,
Tópico(s): Building materials and conservation
2001 - Springer Science+Business Media | Materials and Structures
Tópico(s): Professional Masters Programs Analysis
2007 - | Revista Brasileira de Pós-Graduação
Holmer Savastano, Vanderley Moacyr John, Vahan Agopyan, Al Moslemi,
Tópico(s): Silicone and Siloxane Chemistry
2009 - Elsevier BV | Construction and Building Materials
Produção Nacional
Fabiana da Rocha Cleto, Francisco Ferreira Cardoso, Cláudio Vicente Mitidieri Filho, Vahan Agopyan,
Sistemas para elaboração de documentos técnicos de referência nacional que consolidam as boas práticas do processo de produção de edifícios existem em diversos países, sendo utilizados diferentes nomes, tais como Building Codes nos Estados Unidos, Canadá e Austrália, Codes of Practice na Inglaterra e Documents Techniques Unifiés na França. No Brasil, entretanto, esse tema é recente, mas o setor da construção de edifícios tem-se conscientizado da importância de se formalizarem e harmonizarem as melhores ...
Tópico(s): Construction Project Management and Performance
2011 - Associação Nacional de Tecnologia do Ambiente Construído | Ambiente Construído
Tópico(s): Urban Development and Societal Issues
2018 - | CONCRETO & Construções
Produção Nacional
Revisado por pares
RESUMO A pandemia da Covid-19 impulsionou a cooperação científica com diferentes níveis de governo, principalmente para a criação e incorporação de critérios rigorosos nos processos de elaboração de Políticas Públicas (PP). A USP demonstrou sua capacidade de recomendar políticas públicas baseadas em evidências científicas a partir da atuação de suas unidades, centros, núcleos e grupos de pesquisa. Essa capacidade efetiva pode ser articulada para dar forma à criação de um novo Centro multidisciplinar, ...
Tópico(s): Health, Nursing, Elderly Care
2022 - UNIVERSIDADE DE SÃO PAULO | Estudos Avançados
Produção Nacional
Revisado por pares
Vera Fernandes-Hachich, Vahan Agopyan,
The durability of unplasticized poly(vinyl chloride) (uPVC) components used in the building industry is a function of the interaction of several factors. Types and quantities of additives incorporated to the PVC resin and defining the formulation of the PVC compound used in the production of these components are among the most important such factors. White uPVC window profiles with different formulations have been exposed to five years of natural weathering under Brazilian climatic conditions. Results ...
Tópico(s): Material Properties and Processing
2008 - American Society of Civil Engineers | Journal of Materials in Civil Engineering
The development of Engineering is of utmost importance for the growth of the country. The search for more interaction between university and industry for innovation has been increasing during recent years. For this purpose the Professional Master’s Degree (MP) can be an important tool. Joint research projects aim at promoting the competitiveness of the Brazilian companies in a globalized world. This paper presents the importance of graduate studies on Engineering and the cooperation between the university ...
Tópico(s): Professional Masters Programs Analysis
2005 - | Revista Brasileira de Pós-Graduação
Produção Nacional
Revisado por pares
Wagner Costa Ribeiro, Edmílson Dias de Freitas, Arlindo Philippi,
... Reitoria de Pos-Graduacao, coordenada pelo Prof. Dr. Vahan Agopyan, decidiu criar um grupo de trabalho para organizar ...
Tópico(s): Environmental Sustainability and Education
2012 - UNIVERSIDADE DE SÃO PAULO | Estudos Avançados
Produção Nacional
Vahan Agopyan, Holmer Savastano,
Tópico(s): Innovations in Concrete and Construction Materials
1994 - Cambridge University Press | MRS Proceedings
Produção Nacional
Vahan Agopyan, Rudinei Toneto,
This works analyses the financial performance of the University of São Paulo over recent years. First, we discuss the current financing model of the institution; established in 1989 and based upon the autonomy provided by the government. This model, with stable and increasingly gradual income, has allowed for a better planning of its expansion. Then, the data regarding financial performance of the past few years are presented, showing that the income has increased. However, expenditure has increased ...
Tópico(s): Evasion and Academic Success Factors
2015 - Emerald Publishing Limited | Revista USP
Tópico(s): Materials Engineering and Processing
1991 - Universidad del Norte, Colombia | Memorias
Maria Alba Cincotto, Vahan Agopyan,
Tópico(s): Academic Research in Diverse Fields
1991 - Universidad del Norte, Colombia | Memorias