Salomon Levy - Profile on Academia.edu (original) (raw)

Papers by Salomon Levy

Exacta. Engenharia e Produção

the last decades, the concept of sustainable construction has been addressed in several engineeri... more the last decades, the concept of sustainable construction has been addressed in several engineering projects in the world. The search of materials that provide more durable projects and with long service life is a worldwide consensus. Many researchers do not consider the concrete an attractive material from the standpoint of sustainable construction. This article aims to demystify this scenario and apply high performance concrete in structural columns aiming to sustainability issues. It is a case study of a building located in the municipality of Sao Paulo. It was noted that the concept of sustainable construction is absolutely in line with the use of high performance concrete in structural columns.

Revista ALCONPAT, 2015

En las últimas décadas, el concepto de construcción sostenible se ha abordado en varios proyectos... more En las últimas décadas, el concepto de construcción sostenible se ha abordado en varios proyectos de ingeniería en el mundo. La búsqueda de materiales que proporcionen proyectos con alta vida útil es un consenso en todo el mundo. Dicho esto, muchos investigadores no consideran al hormigón un material atractivo desde el punto de vista de la construcción sostenible. Este artículo intenta desvelar este panorama y presentar una aplicación de hormigón de altas prestaciones en columnas estructurales con vistas a los aspectos de sostenibilidad. Es un estudio de caso de un edificio situado en el municipio de São Paulo. Se observó que el concepto de construcción sostenible está absolutamente de acuerdo con el uso de hormigón de altas prestaciones en columnas estructurales. Palabras claves: Construcción sostenible, vida útil, hormigón, hormigón de altas prestaciones.

Exacta, 2008

Este artigo apresenta uma síntese da evolução histórica da tecnologia de preparo e utilização do ... more Este artigo apresenta uma síntese da evolução histórica da tecnologia de preparo e utilização do concreto como material de construção. Relaciona datas e obras que empregaram esse material desde 5.600 anos a. C. e o consagraram como um dos melhores amigos do homem, uma vez que sempre foi utilizado na construção de residências, obras de arte, aquedutos e templos religiosos, fundamentalmente visando ao bem-estar da raça humana. Entre as inúmeras obras citadas, há uma relação de modernas construções de concreto de elevado desempenho, as quais comprovam sua versatilidade arquitetônica e estrutural, além de sua durabilidade.

Exacta, 2007

In this paper, an analysis was conducted on the influence of the use of 20%, 50% and 100% content... more In this paper, an analysis was conducted on the influence of the use of 20%, 50% and 100% contents of two types of fine recycled aggregates (from demolish concrete and from old masonry) on the following properties of concrete: water absorption by immersion, pore volume, carbonation and resistivity. This analysis was not restricted to compare mixtures from a table of results. All the analysis was based on concrete family behavior. The Mix Design Nomograms (MDN) was made for concrete families: one as reference and six others with different recycled contents to replace the natural fine aggregate. The MDN obtained for the properties studied permitted compare class 20MPa, 30MPa and 40MPa concretes. The results obtained indicate that the carbonation depth reached a minimum and the resistivity reached a maximum when 50% contents of fine recycled masonry aggregates were used. However, this tendency was not repeated for pore volume and water absorption. Thus, it should conclude that the dura...

Cement and Concrete Research, 2004

Fine and coarse recycled aggregates recovered from demolished masonry and concrete structures wer... more Fine and coarse recycled aggregates recovered from demolished masonry and concrete structures were utilized in the manufacture of new concrete mixtures. Three properties of these new concretes were analyzed: water absorption, total pores volume, and carbonation. The recycled concrete families were created by replacing parts of the natural aggregates forming families of concrete with 0%, 20%, 50%, and 100% of aggregates from recycled sources. The usual comparison between mixtures by comparison between behaviors of concrete families. This research shows that the mix design nomogram (MDN) is a new and useful tool that allows the researchers to compare properties and behaviors of different concretes. The results show that the family concrete with the highest pore volume and with the same compressive strength of 20, 30, and 40 MPa (2900, 4350, and 5800 psi) did not always correspond to the concrete family with the highest degree of carbonation. This experiment also showed that some compositional characteristics of concrete could have more influence on the durability that the traditional physical aspects.

Exacta. Engenharia e Produção

the last decades, the concept of sustainable construction has been addressed in several engineeri... more the last decades, the concept of sustainable construction has been addressed in several engineering projects in the world. The search of materials that provide more durable projects and with long service life is a worldwide consensus. Many researchers do not consider the concrete an attractive material from the standpoint of sustainable construction. This article aims to demystify this scenario and apply high performance concrete in structural columns aiming to sustainability issues. It is a case study of a building located in the municipality of Sao Paulo. It was noted that the concept of sustainable construction is absolutely in line with the use of high performance concrete in structural columns.

Revista ALCONPAT, 2015

En las últimas décadas, el concepto de construcción sostenible se ha abordado en varios proyectos... more En las últimas décadas, el concepto de construcción sostenible se ha abordado en varios proyectos de ingeniería en el mundo. La búsqueda de materiales que proporcionen proyectos con alta vida útil es un consenso en todo el mundo. Dicho esto, muchos investigadores no consideran al hormigón un material atractivo desde el punto de vista de la construcción sostenible. Este artículo intenta desvelar este panorama y presentar una aplicación de hormigón de altas prestaciones en columnas estructurales con vistas a los aspectos de sostenibilidad. Es un estudio de caso de un edificio situado en el municipio de São Paulo. Se observó que el concepto de construcción sostenible está absolutamente de acuerdo con el uso de hormigón de altas prestaciones en columnas estructurales. Palabras claves: Construcción sostenible, vida útil, hormigón, hormigón de altas prestaciones.

Exacta, 2008

Este artigo apresenta uma síntese da evolução histórica da tecnologia de preparo e utilização do ... more Este artigo apresenta uma síntese da evolução histórica da tecnologia de preparo e utilização do concreto como material de construção. Relaciona datas e obras que empregaram esse material desde 5.600 anos a. C. e o consagraram como um dos melhores amigos do homem, uma vez que sempre foi utilizado na construção de residências, obras de arte, aquedutos e templos religiosos, fundamentalmente visando ao bem-estar da raça humana. Entre as inúmeras obras citadas, há uma relação de modernas construções de concreto de elevado desempenho, as quais comprovam sua versatilidade arquitetônica e estrutural, além de sua durabilidade.

Exacta, 2007

In this paper, an analysis was conducted on the influence of the use of 20%, 50% and 100% content... more In this paper, an analysis was conducted on the influence of the use of 20%, 50% and 100% contents of two types of fine recycled aggregates (from demolish concrete and from old masonry) on the following properties of concrete: water absorption by immersion, pore volume, carbonation and resistivity. This analysis was not restricted to compare mixtures from a table of results. All the analysis was based on concrete family behavior. The Mix Design Nomograms (MDN) was made for concrete families: one as reference and six others with different recycled contents to replace the natural fine aggregate. The MDN obtained for the properties studied permitted compare class 20MPa, 30MPa and 40MPa concretes. The results obtained indicate that the carbonation depth reached a minimum and the resistivity reached a maximum when 50% contents of fine recycled masonry aggregates were used. However, this tendency was not repeated for pore volume and water absorption. Thus, it should conclude that the dura...

Cement and Concrete Research, 2004

Fine and coarse recycled aggregates recovered from demolished masonry and concrete structures wer... more Fine and coarse recycled aggregates recovered from demolished masonry and concrete structures were utilized in the manufacture of new concrete mixtures. Three properties of these new concretes were analyzed: water absorption, total pores volume, and carbonation. The recycled concrete families were created by replacing parts of the natural aggregates forming families of concrete with 0%, 20%, 50%, and 100% of aggregates from recycled sources. The usual comparison between mixtures by comparison between behaviors of concrete families. This research shows that the mix design nomogram (MDN) is a new and useful tool that allows the researchers to compare properties and behaviors of different concretes. The results show that the family concrete with the highest pore volume and with the same compressive strength of 20, 30, and 40 MPa (2900, 4350, and 5800 psi) did not always correspond to the concrete family with the highest degree of carbonation. This experiment also showed that some compositional characteristics of concrete could have more influence on the durability that the traditional physical aspects.