Detalhes bibliográficos
Ano de defesa: |
2015 |
Autor(a) principal: |
Silva, João Ricardo Pereira da
|
Orientador(a): |
Ferreira, Maria da Graça de Vasconcelos Xavier
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Banca de defesa: |
Silva, Fernando Artur Nogueira
,
Melo, Evenildo Bezerra de
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Tipo de documento: |
Dissertação
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Tipo de acesso: |
Acesso aberto |
Idioma: |
por |
Instituição de defesa: |
Universidade Católica de Pernambuco
|
Programa de Pós-Graduação: |
Mestrado em Engenharia Civil
|
Departamento: |
Engenharia Civil
|
País: |
BR
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Palavras-chave em Português: |
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Palavras-chave em Inglês: |
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Área do conhecimento CNPq: |
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Link de acesso: |
http://tede2.unicap.br:8080/handle/tede/73
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Resumo: |
Modeling studies the RAA expansion are generally limited by the difficulty due to the heterogeneity and reactive aggregate size range. This work aims to study the issue and help in developing models to predict the potential for expansion of mortar and concrete containing reactive aggregates. The paper presents measurements to provide experimental data on the effect of aggregate size expanding mortar bars. The results show that expansion was measured on mortars relating the standard from 2.4 to 0.15 mm fraction with the individual fractions 2.4; 1.2; 0.6; 0.3; 0.15 mm, where 0.3 mm fraction showed the highest growth and the lowest was the fraction 0.15 mm. You can observe the interference of particle sizes. The effect size of reactive aggregates is evaluated and the consequences of accelerated laboratory tests are discussed. |