Publicação
Ductility and durability of strain hardening cementitious composites in the marine environment
| Resumo: | Modern structures are being exposed to severe environments and the lack of durability is one of the most serious problems in concrete infrastructures. Structural concrete exposed to marine environment deserves special attention as the sea salts chemically react with the cement matrix and the steel reinforcement which results in loss of strength, cracking, spalling, etc. The challenges of Civil Engineering, especially within the structures in extreme environments, pose considerable expectations with regards to the development of fibre reinforced materials for the development of more resistant and durable solutions. In the present work, the behaviour of an Engineered Cementitious Composite (ECC) was studied. All the specimens prepared were cured in 4 types of environments: exposed to air (20ºC of temperature and 60% of humidity) immersed in tap water, immersed in salted water and immersed in seawater, all at an average temperature of 18ºC. A series of experiments, including compressive and direct tension tests were carried out to characterize the mechanical properties of the ECC materials while exposed to different environments. The most important characteristic of ECC, which include multiple-cracking behaviour at increasing tensile strains when subjected to increasing tensile loading, was confirmed in all types of curing environments. In all cases the cementitious composites performed well with regards to the strain hardening behaviour typically observed in these materials, although the cracking processes have shown different characteristics. Due to the ability of the material to control crack opening below extremely low values, typically under 100 µm, the durability of structures can be significantly improved when ECC materials are used in the in marine environments. It was shown also that the salted water does not represent well the effect of seawater while characterising ECC mechanical characteristics in the laboratory. |
|---|---|
| Autores principais: | Ferreira, Bárbara |
| Outros Autores: | Pereira, E. N. B.; Cunha, Vitor M. C. F.; Almeida, João |
| Assunto: | Engenharia e Tecnologia::Engenharia Civil |
| Ano: | 2016 |
| País: | Portugal |
| Tipo de documento: | comunicação em conferência |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| _version_ | 1867439391978291200 |
|---|---|
| author | Ferreira, Bárbara |
| author2 | Pereira, E. N. B. Cunha, Vitor M. C. F. Almeida, João |
| author2_role | author author author |
| author_facet | Ferreira, Bárbara Pereira, E. N. B. Cunha, Vitor M. C. F. Almeida, João |
| author_role | author |
| contributor_name_str_mv | RepositóriUM - Universidade do Minho |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Ferreira, Bárbara\"},{\"Person.name\":\"Pereira, E. N. B.\"},{\"Person.name\":\"Cunha, Vitor M. C. F.\"},{\"Person.name\":\"Almeida, João\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | RepositóriUM - Universidade do Minho |
| datacite.creators.creator.creatorName.fl_str_mv | Ferreira, Bárbara Pereira, E. N. B. Cunha, Vitor M. C. F. Almeida, João |
| datacite.date.Accepted.fl_str_mv | 2016-01-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2016-12-23T14:13:43Z |
| datacite.date.embargoed.fl_str_mv | 2016-12-23T14:13:43Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | Engenharia e Tecnologia::Engenharia Civil |
| datacite.titles.title.fl_str_mv | Ductility and durability of strain hardening cementitious composites in the marine environment |
| dc.contributor.none.fl_str_mv | RepositóriUM - Universidade do Minho |
| dc.creator.none.fl_str_mv | Ferreira, Bárbara Pereira, E. N. B. Cunha, Vitor M. C. F. Almeida, João |
| dc.date.Accepted.fl_str_mv | 2016-01-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2016-12-23T14:13:43Z |
| dc.date.embargoed.fl_str_mv | 2016-12-23T14:13:43Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | https://hdl.handle.net/1822/43850 |
| dc.language.none.fl_str_mv | eng |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.subject.none.fl_str_mv | Engenharia e Tecnologia::Engenharia Civil |
| dc.title.fl_str_mv | Ductility and durability of strain hardening cementitious composites in the marine environment |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_5794 |
| description | Modern structures are being exposed to severe environments and the lack of durability is one of the most serious problems in concrete infrastructures. Structural concrete exposed to marine environment deserves special attention as the sea salts chemically react with the cement matrix and the steel reinforcement which results in loss of strength, cracking, spalling, etc. The challenges of Civil Engineering, especially within the structures in extreme environments, pose considerable expectations with regards to the development of fibre reinforced materials for the development of more resistant and durable solutions. In the present work, the behaviour of an Engineered Cementitious Composite (ECC) was studied. All the specimens prepared were cured in 4 types of environments: exposed to air (20ºC of temperature and 60% of humidity) immersed in tap water, immersed in salted water and immersed in seawater, all at an average temperature of 18ºC. A series of experiments, including compressive and direct tension tests were carried out to characterize the mechanical properties of the ECC materials while exposed to different environments. The most important characteristic of ECC, which include multiple-cracking behaviour at increasing tensile strains when subjected to increasing tensile loading, was confirmed in all types of curing environments. In all cases the cementitious composites performed well with regards to the strain hardening behaviour typically observed in these materials, although the cracking processes have shown different characteristics. Due to the ability of the material to control crack opening below extremely low values, typically under 100 µm, the durability of structures can be significantly improved when ECC materials are used in the in marine environments. It was shown also that the salted water does not represent well the effect of seawater while characterising ECC mechanical characteristics in the laboratory. |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | conferencePaper |
| fulltext.url.fl_str_mv | https://repositorium.uminho.pt/bitstreams/65fb426d-1d84-4f16-92e4-7313bddcbf4f/download |
| id | rum_0f682fdbc3b171ce41bb3fdcdf2dba7c |
| identifier.url.fl_str_mv | https://hdl.handle.net/1822/43850 |
| instacron_str | repositorium |
| institution | Universidade do Minho |
| instname_str | Universidade do Minho |
| language | eng |
| network_acronym_str | rum |
| network_name_str | RepositóriUM - Universidade do Minho |
| oai_identifier_str | oai:repositorium.uminho.pt:1822/43850 |
| organization_str_mv | urn:organizationAcronym:repositorium |
| person_str_mv | Ferreira, Bárbara Pereira, E. N. B. Cunha, Vitor M. C. F. Almeida, João |
| publishDate | 2016 |
| reponame_str | RepositóriUM - Universidade do Minho |
| repository_id_str | urn:repositoryAcronym:rum |
| service_str_mv | urn:repositoryAcronym:rum |
| spelling | engporModern structures are being exposed to severe environments and the lack of durability is one of the most serious problems in concrete infrastructures. Structural concrete exposed to marine environment deserves special attention as the sea salts chemically react with the cement matrix and the steel reinforcement which results in loss of strength, cracking, spalling, etc. The challenges of Civil Engineering, especially within the structures in extreme environments, pose considerable expectations with regards to the development of fibre reinforced materials for the development of more resistant and durable solutions. In the present work, the behaviour of an Engineered Cementitious Composite (ECC) was studied. All the specimens prepared were cured in 4 types of environments: exposed to air (20ºC of temperature and 60% of humidity) immersed in tap water, immersed in salted water and immersed in seawater, all at an average temperature of 18ºC. A series of experiments, including compressive and direct tension tests were carried out to characterize the mechanical properties of the ECC materials while exposed to different environments. The most important characteristic of ECC, which include multiple-cracking behaviour at increasing tensile strains when subjected to increasing tensile loading, was confirmed in all types of curing environments. In all cases the cementitious composites performed well with regards to the strain hardening behaviour typically observed in these materials, although the cracking processes have shown different characteristics. Due to the ability of the material to control crack opening below extremely low values, typically under 100 µm, the durability of structures can be significantly improved when ECC materials are used in the in marine environments. It was shown also that the salted water does not represent well the effect of seawater while characterising ECC mechanical characteristics in the laboratory.application/pdfporDuctility and durability of strain hardening cementitious composites in the marine environmentFerreira, BárbaraPereira, E. N. B.Cunha, Vitor M. C. F.Almeida, JoãoHostingInstitutionOrganizationalRepositóriUM - Universidade do Minhoe-mailmailto:repositorium@usdb.uminho.ptrepositorium@usdb.uminho.pt2016-12-23T14:13:43Z20162016-01-01T00:00:00ZHandlehttps://hdl.handle.net/1822/43850http://purl.org/coar/access_right/c_abf2open accesshttp://www.oecd.org/science/inno/38235147.pdfFields of Science and Technology (FOS)Engenharia e Tecnologia::Engenharia Civil1180088 bytesother research producthttp://purl.org/coar/resource_type/c_5794conference paperhttp://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://repositorium.uminho.pt/bitstreams/65fb426d-1d84-4f16-92e4-7313bddcbf4f/download |
| spellingShingle | Ductility and durability of strain hardening cementitious composites in the marine environment Ferreira, Bárbara Engenharia e Tecnologia::Engenharia Civil |
| status | SINGLETON |
| subject.other.fl_str_mv | Engenharia e Tecnologia::Engenharia Civil |
| title | Ductility and durability of strain hardening cementitious composites in the marine environment |
| title_full | Ductility and durability of strain hardening cementitious composites in the marine environment |
| title_fullStr | Ductility and durability of strain hardening cementitious composites in the marine environment |
| title_full_unstemmed | Ductility and durability of strain hardening cementitious composites in the marine environment |
| title_short | Ductility and durability of strain hardening cementitious composites in the marine environment |
| title_sort | Ductility and durability of strain hardening cementitious composites in the marine environment |
| topic | Engenharia e Tecnologia::Engenharia Civil |
| topic_facet | Engenharia e Tecnologia::Engenharia Civil |
| url | https://hdl.handle.net/1822/43850 |
| visible | 1 |