Study of the influence of the mortar fine recycled aggregate ratio and the mixing sequence on the behavior of new mortars
The objective of this study was to investigate the behavior of mortars by replacing a natural fine aggregate (NFA) with mortar fine recycled aggregate (MFRA), with dimensions of less than 2.4mm. In addition, the influence of the mixing sequence over the performance of these mortars was analyzed. Fo...
Gorde:
| Egile Nagusiak: | , |
|---|---|
| Formatua: | Online |
| Hizkuntza: | eng |
| Argitaratua: |
ANTAC - Associação Nacional de Tecnologia do Ambiente Construído
2018
|
| Sarrera elektronikoa: | https://seer.ufrgs.br/ambienteconstruido/article/view/72668 |
| Etiketak: |
Etiketa erantsi
Etiketarik gabe, Izan zaitez lehena erregistro honi etiketa jartzen!
|
| id |
ojs-article-72668 |
|---|---|
| record_format |
ojs |
| spelling |
ojs-article-726682019-01-08T18:41:31Z Study of the influence of the mortar fine recycled aggregate ratio and the mixing sequence on the behavior of new mortars Silva Neto, Gilberto Alves da Leite, Mônica Batista Recycled Mortar; Mixing Sequence; Mortar Fine Recycled Aggregate The objective of this study was to investigate the behavior of mortars by replacing a natural fine aggregate (NFA) with mortar fine recycled aggregate (MFRA), with dimensions of less than 2.4mm. In addition, the influence of the mixing sequence over the performance of these mortars was analyzed. For this purpose, the replacement contents, by weight, of 20% and 40%, and two mixing sequences were adopted: the sequence of the Brazilian Standard, NBR 7215 (ABNT, 1996) and an adaptation for mortars (MDE, in Portuguese, Mistura em Duas Etapas) of the Two-Stage Mixing Approach (TSMA), proposed by Tam, Gao and Tam (2005) for recycled concrete. The mortars were produced with cement CPV-ARI, using a mixing proportion of 1.0:5.0 (cement:aggregate, by weight) and a constant water/cement rate of 0.88. To analyze the behavior of the recycled mortars, they were tested in the fresh state and in the hardened state. The study concluded that the partial replacement of the NFA with the MFRA improved some properties of the recycled mortars: the air entrained content and the water absorption rate by capillarity decreased, and the mechanical performance increased. Regarding the influence of the mixing sequence, the adoption of the MDE promoted a better behavior on the mortar properties evaluated. ANTAC - Associação Nacional de Tecnologia do Ambiente Construído 2018-06-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://seer.ufrgs.br/ambienteconstruido/article/view/72668 Ambiente Construído; v. 18, n. 2 (2018): Edição especial sobre Tecnologia das Argamassas; 53-69 Ambiente Construído; v. 18, n. 2 (2018): Edição especial sobre Tecnologia das Argamassas; 53-69 Ambiente Construído; v. 18, n. 2 (2018): Edição especial sobre Tecnologia das Argamassas; 53-69 1678-8621 1415-8876 eng https://seer.ufrgs.br/ambienteconstruido/article/view/72668/48342 Direitos autorais 2018 Ambiente Construído https://creativecommons.org/licenses/by/4.0 |
| institution |
Universidade Federal do Rio Grande do Sul |
| collection |
OJS |
| language |
eng |
| format |
Online |
| author |
Silva Neto, Gilberto Alves da Leite, Mônica Batista |
| spellingShingle |
Silva Neto, Gilberto Alves da Leite, Mônica Batista Study of the influence of the mortar fine recycled aggregate ratio and the mixing sequence on the behavior of new mortars |
| author_facet |
Silva Neto, Gilberto Alves da Leite, Mônica Batista |
| author_sort |
Silva Neto, Gilberto Alves da |
| title |
Study of the influence of the mortar fine recycled aggregate ratio and the mixing sequence on the behavior of new mortars |
| title_short |
Study of the influence of the mortar fine recycled aggregate ratio and the mixing sequence on the behavior of new mortars |
| title_full |
Study of the influence of the mortar fine recycled aggregate ratio and the mixing sequence on the behavior of new mortars |
| title_fullStr |
Study of the influence of the mortar fine recycled aggregate ratio and the mixing sequence on the behavior of new mortars |
| title_full_unstemmed |
Study of the influence of the mortar fine recycled aggregate ratio and the mixing sequence on the behavior of new mortars |
| title_sort |
study of the influence of the mortar fine recycled aggregate ratio and the mixing sequence on the behavior of new mortars |
| description |
The objective of this study was to investigate the behavior of mortars by replacing a natural fine aggregate (NFA) with mortar fine recycled aggregate (MFRA), with dimensions of less than 2.4mm. In addition, the influence of the mixing sequence over the performance of these mortars was analyzed. For this purpose, the replacement contents, by weight, of 20% and 40%, and two mixing sequences were adopted: the sequence of the Brazilian Standard, NBR 7215 (ABNT, 1996) and an adaptation for mortars (MDE, in Portuguese, Mistura em Duas Etapas) of the Two-Stage Mixing Approach (TSMA), proposed by Tam, Gao and Tam (2005) for recycled concrete. The mortars were produced with cement CPV-ARI, using a mixing proportion of 1.0:5.0 (cement:aggregate, by weight) and a constant water/cement rate of 0.88. To analyze the behavior of the recycled mortars, they were tested in the fresh state and in the hardened state. The study concluded that the partial replacement of the NFA with the MFRA improved some properties of the recycled mortars: the air entrained content and the water absorption rate by capillarity decreased, and the mechanical performance increased. Regarding the influence of the mixing sequence, the adoption of the MDE promoted a better behavior on the mortar properties evaluated. |
| publisher |
ANTAC - Associação Nacional de Tecnologia do Ambiente Construído |
| publishDate |
2018 |
| url |
https://seer.ufrgs.br/ambienteconstruido/article/view/72668 |
| work_keys_str_mv |
AT silvanetogilbertoalvesda studyoftheinfluenceofthemortarfinerecycledaggregateratioandthemixingsequenceonthebehaviorofnewmortars AT leitemonicabatista studyoftheinfluenceofthemortarfinerecycledaggregateratioandthemixingsequenceonthebehaviorofnewmortars |
| _version_ |
1709370607275081728 |