Fracture Properties of Geopolymer Concrete Based on Metakaolin, Fly Ash and Rice Rusk Ash
Geopolymers are exclusively mineral nature and are considered an alternative to materials based on Portland clinker, whose production accounts for about 5% of anthropogenic CO2 emissions in the world. The geopolymer cement concrete (GCC) may be prepared from natural oxide-aluminosilicates such as me...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2017-11-01
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| Series: | Materials Research |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000800630&tlng=en |
| _version_ | 1798015671984979968 |
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| author | Eliane Fernandes Côrtes Pires Claúdio Mesquita Campinho de Azevedo André Rocha Pimenta Felipe José da Silva Fathi Aref Ibrahim Darwish |
| author_facet | Eliane Fernandes Côrtes Pires Claúdio Mesquita Campinho de Azevedo André Rocha Pimenta Felipe José da Silva Fathi Aref Ibrahim Darwish |
| author_sort | Eliane Fernandes Côrtes Pires |
| collection | DOAJ |
| description | Geopolymers are exclusively mineral nature and are considered an alternative to materials based on Portland clinker, whose production accounts for about 5% of anthropogenic CO2 emissions in the world. The geopolymer cement concrete (GCC) may be prepared from natural oxide-aluminosilicates such as metakaolin (MK), or synthetic, such as fly ash (FA) together with active silica contained in the rice husk ash (RHA). The fracture properties of the Portland cement concrete (PCC) with 25 MPa and 50 MPa, and of three different geopolymeric concretes with the same strength Classes were determined for comparative analysis. The aim of this study is to provide support to begin the use of geopolymers in the reinforced concrete precasting Industry. Three-point bending tests of notched beams with a/d (notch depth/beam depth) of 0.5 from RILEM TC80-FMT Recommendations were used to determine the critical values of K, G, R and J-integral for crack propagation under mode I. The results showed that the geopolymeric concretes exhibit similar mechanical behavior and fracture properties higher that those determined in PCC for the same strength class. |
| first_indexed | 2024-04-11T15:38:11Z |
| format | Article |
| id | doaj.art-6076e317cee74215b37cb5aa2e098b23 |
| institution | Directory Open Access Journal |
| issn | 1516-1439 |
| language | English |
| last_indexed | 2024-04-11T15:38:11Z |
| publishDate | 2017-11-01 |
| publisher | Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) |
| record_format | Article |
| series | Materials Research |
| spelling | doaj.art-6076e317cee74215b37cb5aa2e098b232022-12-22T04:15:54ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392017-11-0120suppl 263063610.1590/1980-5373-mr-2016-0974Fracture Properties of Geopolymer Concrete Based on Metakaolin, Fly Ash and Rice Rusk AshEliane Fernandes Côrtes PiresClaúdio Mesquita Campinho de AzevedoAndré Rocha PimentaFelipe José da SilvaFathi Aref Ibrahim DarwishGeopolymers are exclusively mineral nature and are considered an alternative to materials based on Portland clinker, whose production accounts for about 5% of anthropogenic CO2 emissions in the world. The geopolymer cement concrete (GCC) may be prepared from natural oxide-aluminosilicates such as metakaolin (MK), or synthetic, such as fly ash (FA) together with active silica contained in the rice husk ash (RHA). The fracture properties of the Portland cement concrete (PCC) with 25 MPa and 50 MPa, and of three different geopolymeric concretes with the same strength Classes were determined for comparative analysis. The aim of this study is to provide support to begin the use of geopolymers in the reinforced concrete precasting Industry. Three-point bending tests of notched beams with a/d (notch depth/beam depth) of 0.5 from RILEM TC80-FMT Recommendations were used to determine the critical values of K, G, R and J-integral for crack propagation under mode I. The results showed that the geopolymeric concretes exhibit similar mechanical behavior and fracture properties higher that those determined in PCC for the same strength class.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000800630&tlng=engeopolymerconcretefracture toughnessfly ashrice husk ash |
| spellingShingle | Eliane Fernandes Côrtes Pires Claúdio Mesquita Campinho de Azevedo André Rocha Pimenta Felipe José da Silva Fathi Aref Ibrahim Darwish Fracture Properties of Geopolymer Concrete Based on Metakaolin, Fly Ash and Rice Rusk Ash Materials Research geopolymer concrete fracture toughness fly ash rice husk ash |
| title | Fracture Properties of Geopolymer Concrete Based on Metakaolin, Fly Ash and Rice Rusk Ash |
| title_full | Fracture Properties of Geopolymer Concrete Based on Metakaolin, Fly Ash and Rice Rusk Ash |
| title_fullStr | Fracture Properties of Geopolymer Concrete Based on Metakaolin, Fly Ash and Rice Rusk Ash |
| title_full_unstemmed | Fracture Properties of Geopolymer Concrete Based on Metakaolin, Fly Ash and Rice Rusk Ash |
| title_short | Fracture Properties of Geopolymer Concrete Based on Metakaolin, Fly Ash and Rice Rusk Ash |
| title_sort | fracture properties of geopolymer concrete based on metakaolin fly ash and rice rusk ash |
| topic | geopolymer concrete fracture toughness fly ash rice husk ash |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000800630&tlng=en |
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