Monitoring of Hardening of Portland Cement Suspensions by Vicat Test, Oscillatory Rheometry, and Isothermal Calorimetry
The hardening of cement pastes occurs due to coagulation/flocculation promoted by the hydration reactions. At this way, depending on the physico-chemical characteristics of the powder, different changes are obtained during the microstructure formation. Thus, as the use of supplementary cementitious...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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De Gruyter
2017-06-01
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| Series: | Applied Rheology |
| Subjects: | |
| Online Access: | https://doi.org/10.3933/applrheol-27-36006 |
| _version_ | 1818677648817127424 |
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| author | de Oliveira Romano Roberto Cesar Maciel Marcel Hark Pileggi Rafael Giuliano Cincotto Maria Alba |
| author_facet | de Oliveira Romano Roberto Cesar Maciel Marcel Hark Pileggi Rafael Giuliano Cincotto Maria Alba |
| author_sort | de Oliveira Romano Roberto Cesar |
| collection | DOAJ |
| description | The hardening of cement pastes occurs due to coagulation/flocculation promoted by the hydration reactions. At this way, depending on the physico-chemical characteristics of the powder, different changes are obtained during the microstructure formation. Thus, as the use of supplementary cementitious materials is rising worldwide, this stage of construction process is being more complex. So, this work was conducted to evaluate the hardening phenomenon of pastes formulated with Portland cements blended with limestone filler (LF) and ground blast furnace slag (BFS). Vicat test, oscillatory rheometry and isothermal conduction calorimetry were used to monitor this transition. Vicat test results indicate different setting times as a function of addition, but no information before these times was obtained. Using isothermal calorimetry was possible to monitor the related changes to the chemical reactions since the first contact with water, and using rheometry, the rate and force of cement particle agglomeration. During the discussion of results will be not presented in depth the results of the three methods, but will be shown that they are complementary and provide a better explanation to the transition from fluid-to-solid behavior, independently of kind of supplementary cementitious materials. |
| first_indexed | 2024-12-17T09:02:43Z |
| format | Article |
| id | doaj.art-6b3dafbaa565419f9a3fc0a63b4191e0 |
| institution | Directory Open Access Journal |
| issn | 1617-8106 |
| language | English |
| last_indexed | 2024-12-17T09:02:43Z |
| publishDate | 2017-06-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Applied Rheology |
| spelling | doaj.art-6b3dafbaa565419f9a3fc0a63b4191e02022-12-21T21:55:38ZengDe GruyterApplied Rheology1617-81062017-06-01273283710.3933/applrheol-27-36006Monitoring of Hardening of Portland Cement Suspensions by Vicat Test, Oscillatory Rheometry, and Isothermal Calorimetryde Oliveira Romano Roberto Cesar0Maciel Marcel Hark1Pileggi Rafael Giuliano2Cincotto Maria Alba3Universidade de São Paulo, Departamento de Construção Civil, Av. Prof. Almeida Prado 83, 05424-970São Paulo(SP), BrazilUniversidade de São Paulo, Departamento de Construção Civil, Av. Prof. Almeida Prado 83,05424-970São Paulo(SP), BrazilUniversidade de São Paulo, Departamento de Construção Civil, Av. Prof. Almeida Prado 83,05424-970São Paulo(SP), BrazilUniversidade de São Paulo, Departamento de Construção Civil, Av. Prof. Almeida Prado 83,05424-970São Paulo(SP), BrazilThe hardening of cement pastes occurs due to coagulation/flocculation promoted by the hydration reactions. At this way, depending on the physico-chemical characteristics of the powder, different changes are obtained during the microstructure formation. Thus, as the use of supplementary cementitious materials is rising worldwide, this stage of construction process is being more complex. So, this work was conducted to evaluate the hardening phenomenon of pastes formulated with Portland cements blended with limestone filler (LF) and ground blast furnace slag (BFS). Vicat test, oscillatory rheometry and isothermal conduction calorimetry were used to monitor this transition. Vicat test results indicate different setting times as a function of addition, but no information before these times was obtained. Using isothermal calorimetry was possible to monitor the related changes to the chemical reactions since the first contact with water, and using rheometry, the rate and force of cement particle agglomeration. During the discussion of results will be not presented in depth the results of the three methods, but will be shown that they are complementary and provide a better explanation to the transition from fluid-to-solid behavior, independently of kind of supplementary cementitious materials.https://doi.org/10.3933/applrheol-27-36006vicat testisothermal calorimetryoscillatory rheometrysupplementary cementitious materials |
| spellingShingle | de Oliveira Romano Roberto Cesar Maciel Marcel Hark Pileggi Rafael Giuliano Cincotto Maria Alba Monitoring of Hardening of Portland Cement Suspensions by Vicat Test, Oscillatory Rheometry, and Isothermal Calorimetry Applied Rheology vicat test isothermal calorimetry oscillatory rheometry supplementary cementitious materials |
| title | Monitoring of Hardening of Portland Cement Suspensions by Vicat Test, Oscillatory Rheometry, and Isothermal Calorimetry |
| title_full | Monitoring of Hardening of Portland Cement Suspensions by Vicat Test, Oscillatory Rheometry, and Isothermal Calorimetry |
| title_fullStr | Monitoring of Hardening of Portland Cement Suspensions by Vicat Test, Oscillatory Rheometry, and Isothermal Calorimetry |
| title_full_unstemmed | Monitoring of Hardening of Portland Cement Suspensions by Vicat Test, Oscillatory Rheometry, and Isothermal Calorimetry |
| title_short | Monitoring of Hardening of Portland Cement Suspensions by Vicat Test, Oscillatory Rheometry, and Isothermal Calorimetry |
| title_sort | monitoring of hardening of portland cement suspensions by vicat test oscillatory rheometry and isothermal calorimetry |
| topic | vicat test isothermal calorimetry oscillatory rheometry supplementary cementitious materials |
| url | https://doi.org/10.3933/applrheol-27-36006 |
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