Publicação
Using thymolphthalein for accelerated carbonation testing of high volume fly ash cementitious blends
| Resumo: | Phenolphthalein is the most common pH indicator used to measure the carbonation depth of cementitious materials. It is simple and quick to use, but according to some authors, is not an appropriate tool. Moreover, this substance is in the candidate list as a substance of very high concern by European Chemicals Agency. This article discusses the use of thymolphthalein rather than phenolphthalein. Accelerated carbonation tests were performed on cement mortars and high volume fly ash mortars. Once this kind of mixtures has low carbonation resistance additional alkalinity was provided by adding hydrated lime during its fresh mixture, and by curing the samples immersed in a calcium hydroxide solution. The results showed that the best indicator was the thymolphthalein, mainly for blends with lower carbonation depth. It was also checked that adding alkalinity can be useful for increasing the carbonation resistance. |
|---|---|
| Autores principais: | Reis, Rui |
| Outros Autores: | Camões, Aires; Ribeiro, Manuel |
| Assunto: | Carbonation Thymolphthalein Engenharia e Tecnologia::Engenharia Civil |
| Ano: | 2019 |
| País: | Portugal |
| Tipo de documento: | comunicação em conferência |
| Tipo de acesso: | acesso restrito |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| _version_ | 1879888092824862720 |
|---|---|
| author | Reis, Rui |
| author2 | Camões, Aires Ribeiro, Manuel |
| author2_role | author author |
| author_facet | Reis, Rui Camões, Aires Ribeiro, Manuel |
| author_role | author |
| contributor_name_str_mv | Universidade do Minho |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Reis, Rui\"},{\"Person.name\":\"Camões, Aires\"},{\"Person.name\":\"Ribeiro, Manuel\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | Universidade do Minho |
| datacite.creators.creator.creatorName.fl_str_mv | Reis, Rui Camões, Aires Ribeiro, Manuel |
| datacite.date.Accepted.fl_str_mv | 2019-09-01T00:00:00Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_16ec |
| datacite.subjects.subject.fl_str_mv | Carbonation Thymolphthalein Engenharia e Tecnologia::Engenharia Civil |
| datacite.titles.title.fl_str_mv | Using thymolphthalein for accelerated carbonation testing of high volume fly ash cementitious blends |
| dc.contributor.none.fl_str_mv | Universidade do Minho |
| dc.creator.none.fl_str_mv | Reis, Rui Camões, Aires Ribeiro, Manuel |
| dc.date.Accepted.fl_str_mv | 2019-09-01T00:00:00Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | https://hdl.handle.net/1822/63234 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Springer |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_16ec |
| dc.subject.none.fl_str_mv | Carbonation Thymolphthalein Engenharia e Tecnologia::Engenharia Civil |
| dc.title.fl_str_mv | Using thymolphthalein for accelerated carbonation testing of high volume fly ash cementitious blends |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_5794 |
| description | Phenolphthalein is the most common pH indicator used to measure the carbonation depth of cementitious materials. It is simple and quick to use, but according to some authors, is not an appropriate tool. Moreover, this substance is in the candidate list as a substance of very high concern by European Chemicals Agency. This article discusses the use of thymolphthalein rather than phenolphthalein. Accelerated carbonation tests were performed on cement mortars and high volume fly ash mortars. Once this kind of mixtures has low carbonation resistance additional alkalinity was provided by adding hydrated lime during its fresh mixture, and by curing the samples immersed in a calcium hydroxide solution. The results showed that the best indicator was the thymolphthalein, mainly for blends with lower carbonation depth. It was also checked that adding alkalinity can be useful for increasing the carbonation resistance. |
| dirty | 0 |
| eu_rights_str_mv | restrictedAccess |
| format | conferencePaper |
| id | rum_e07b0fbc348673e5a55bb0bf098c22b5 |
| identifier.url.fl_str_mv | https://hdl.handle.net/1822/63234 |
| inst_facet_str | urn:organizationAcronym:repositorium{{{_:::_}}}Universidade do Minho |
| 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:1822/63234 |
| organization_str_mv | urn:organizationAcronym:repositorium |
| person_str_mv | Reis, Rui Camões, Aires Ribeiro, Manuel |
| publishDate | 2019 |
| publisher.none.fl_str_mv | Springer |
| repo_facet_str | urn:repositoryAcronym:rum{{{_:::_}}}RepositóriUM - Universidade do Minho |
| reponame_str | RepositóriUM - Universidade do Minho |
| repository_id_str | urn:repositoryAcronym:rum |
| service_str_mv | urn:repositoryAcronym:rum |
| spelling | engSpringerengPhenolphthalein is the most common pH indicator used to measure the carbonation depth of cementitious materials. It is simple and quick to use, but according to some authors, is not an appropriate tool. Moreover, this substance is in the candidate list as a substance of very high concern by European Chemicals Agency. This article discusses the use of thymolphthalein rather than phenolphthalein. Accelerated carbonation tests were performed on cement mortars and high volume fly ash mortars. Once this kind of mixtures has low carbonation resistance additional alkalinity was provided by adding hydrated lime during its fresh mixture, and by curing the samples immersed in a calcium hydroxide solution. The results showed that the best indicator was the thymolphthalein, mainly for blends with lower carbonation depth. It was also checked that adding alkalinity can be useful for increasing the carbonation resistance.application/pdfporUsing thymolphthalein for accelerated carbonation testing of high volume fly ash cementitious blendsReis, RuiCamões, AiresRibeiro, ManuelHostingInstitutionOrganizationalUniversidade do Minhoe-mailmailto:repositorium@usdb.uminho.ptrepositorium@usdb.uminho.ptCITATIONReis R. C., Camões A., Ribeiro M. Using Thymolphthalein for Accelerated Carbonation Testing of High Volume Fly Ash Cementitious Blends, Service Life and Durability of Reinforced Concrete Structures, pp. 17-30, doi:10.1007/978-3-319-90236-4, 2019ISBNIsPartOf978-3-319-90235-7ISSNIsPartOf2211-0844DOIIsPartOf10.1007/978-3-319-90236-4_22019-092019-09-01T00:00:00ZHandlehttps://hdl.handle.net/1822/63234http://purl.org/coar/access_right/c_16ecrestricted accessCarbonationThymolphthaleinhttp://www.oecd.org/science/inno/38235147.pdfFields of Science and Technology (FOS)Engenharia e Tecnologia::Engenharia Civil9267914 bytesother research producthttp://purl.org/coar/resource_type/c_5794conference paperhttp://purl.org/coar/access_right/c_f1cfapplication/pdfhttps://repositorium.uminho.pt/bitstreams/2190d9e1-0ff4-4754-a9f5-c9d8f4eb9a08/download |
| spellingShingle | Using thymolphthalein for accelerated carbonation testing of high volume fly ash cementitious blends Reis, Rui Carbonation Thymolphthalein Engenharia e Tecnologia::Engenharia Civil |
| status | SINGLETON |
| subject.fl_str_mv | Carbonation Thymolphthalein |
| subject.other.fl_str_mv | Engenharia e Tecnologia::Engenharia Civil |
| title | Using thymolphthalein for accelerated carbonation testing of high volume fly ash cementitious blends |
| title_full | Using thymolphthalein for accelerated carbonation testing of high volume fly ash cementitious blends |
| title_fullStr | Using thymolphthalein for accelerated carbonation testing of high volume fly ash cementitious blends |
| title_full_unstemmed | Using thymolphthalein for accelerated carbonation testing of high volume fly ash cementitious blends |
| title_short | Using thymolphthalein for accelerated carbonation testing of high volume fly ash cementitious blends |
| title_sort | Using thymolphthalein for accelerated carbonation testing of high volume fly ash cementitious blends |
| topic | Carbonation Thymolphthalein Engenharia e Tecnologia::Engenharia Civil |
| topic_facet | Carbonation Thymolphthalein Engenharia e Tecnologia::Engenharia Civil |
| url | https://hdl.handle.net/1822/63234 |
| visible | 1 |
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