Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The dispersing performances of polycarboxylate superplasticizer in cement pastes prepared with deionized water and seawater
https://orcid.org/0000-0002-3615-6643
Abstract Comparative study on the dispersing performances of polycarboxylate superplasticizer (PCE) in cement pastes prepared with deionized water and seawater was conducted by involving techniques of fluidity tests, measurement of adsorption amount of PCE, isothermal calorimetry, X-ray diffraction and specific surface area analysis etc. It is shown that the seawater leads to a visible drop of the initial fluidity of the PCE plasticized cement paste and faster loss of the fluidity over hydration time, compared to deionized water. $ Mg^{2+} $ ion present in seawater reduces the dispersing efficiency of PCE in fresh cement paste (fcps) due to the possible complexation between $ Mg^{2+} $ ions and PCE. $ SO_{4} $2− ion present in the seawater notably promotes the initial formation of AFt crystals and increases the specific surface area of fcps, which consequently consumes a large amount of PCE molecules and results in a faster fluidity loss over hydration time.
The dispersing performances of polycarboxylate superplasticizer in cement pastes prepared with deionized water and seawater
https://orcid.org/0000-0002-3615-6643
Abstract Comparative study on the dispersing performances of polycarboxylate superplasticizer (PCE) in cement pastes prepared with deionized water and seawater was conducted by involving techniques of fluidity tests, measurement of adsorption amount of PCE, isothermal calorimetry, X-ray diffraction and specific surface area analysis etc. It is shown that the seawater leads to a visible drop of the initial fluidity of the PCE plasticized cement paste and faster loss of the fluidity over hydration time, compared to deionized water. $ Mg^{2+} $ ion present in seawater reduces the dispersing efficiency of PCE in fresh cement paste (fcps) due to the possible complexation between $ Mg^{2+} $ ions and PCE. $ SO_{4} $2− ion present in the seawater notably promotes the initial formation of AFt crystals and increases the specific surface area of fcps, which consequently consumes a large amount of PCE molecules and results in a faster fluidity loss over hydration time.
The dispersing performances of polycarboxylate superplasticizer in cement pastes prepared with deionized water and seawater
https://orcid.org/0000-0002-3615-6643
Abstract Comparative study on the dispersing performances of polycarboxylate superplasticizer (PCE) in cement pastes prepared with deionized water and seawater was conducted by involving techniques of fluidity tests, measurement of adsorption amount of PCE, isothermal calorimetry, X-ray diffraction and specific surface area analysis etc. It is shown that the seawater leads to a visible drop of the initial fluidity of the PCE plasticized cement paste and faster loss of the fluidity over hydration time, compared to deionized water. $ Mg^{2+} $ ion present in seawater reduces the dispersing efficiency of PCE in fresh cement paste (fcps) due to the possible complexation between $ Mg^{2+} $ ions and PCE. $ SO_{4} $2− ion present in the seawater notably promotes the initial formation of AFt crystals and increases the specific surface area of fcps, which consequently consumes a large amount of PCE molecules and results in a faster fluidity loss over hydration time.
The dispersing performances of polycarboxylate superplasticizer in cement pastes prepared with deionized water and seawater
Pang, Xiaofan (Autor:in) / Kong, Xiangming (Autor:in) / Liu, Xiaoyong (Autor:in) / Hao, Tingyu (Autor:in)
2021
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Hydro-mechanical properties of fresh cement pastes containing polycarboxylate superplasticizer
| British Library Online Contents | 2013
Hydro-mechanical properties of fresh cement pastes containing polycarboxylate superplasticizer
| Online Contents | 2013
Dispersing type polycarboxylate superplasticizer and preparation method thereof
| Europäisches Patentamt | 2024