Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Simulated seawater-resistance of blended portland-phosphoaluminate mortar
The resistance of Portland cement (PC) mortars to the corrosion by simulated seawater (19.85 g/L concentration of Cl(-) ions) is enhanced by blending the novel phosphoaluminate cement (PALC) with Portland cement. At 510 d exposure the losses of mechanical strength and elastic modulus of PC-PALC mortars were, respectively, about 63.0% and 46.8% lower than the corresponding values of the control PC. Microstructure characterization being conducted by the techniques of XRD (X-ray diffraction), SEM (scanning electronic microscope), FT-IR (Fourier-Transformation Infrared) and 29.Si-NMR (nuclear magnetic resonance) revealed firstly that the reduced amount of expansive hydrates of C3A(CaCl2)(10H2O) and ettringite, and the reduced depolymerization of [SiO4] in the C-S-H gel formed in the PC-PALC pastes were responsible for limiting the penetration of Cl(-) which, in turn, improved the mechanical properties in comparison to the control PC.
Simulated seawater-resistance of blended portland-phosphoaluminate mortar
The resistance of Portland cement (PC) mortars to the corrosion by simulated seawater (19.85 g/L concentration of Cl(-) ions) is enhanced by blending the novel phosphoaluminate cement (PALC) with Portland cement. At 510 d exposure the losses of mechanical strength and elastic modulus of PC-PALC mortars were, respectively, about 63.0% and 46.8% lower than the corresponding values of the control PC. Microstructure characterization being conducted by the techniques of XRD (X-ray diffraction), SEM (scanning electronic microscope), FT-IR (Fourier-Transformation Infrared) and 29.Si-NMR (nuclear magnetic resonance) revealed firstly that the reduced amount of expansive hydrates of C3A(CaCl2)(10H2O) and ettringite, and the reduced depolymerization of [SiO4] in the C-S-H gel formed in the PC-PALC pastes were responsible for limiting the penetration of Cl(-) which, in turn, improved the mechanical properties in comparison to the control PC.
Simulated seawater-resistance of blended portland-phosphoaluminate mortar
Simulierte Meerwasserresistenz eines Portland-Phosphoaluminatmörtelgemisches
Feng Xing (Autor:in) / Yi, Zhaohua (Autor:in) / Li, Shiqun (Autor:in) / Ding, Zhu (Autor:in) / Hu, Jiashan (Autor:in) / Liu, Biao (Autor:in)
Silicates Industriels ; 74 ; 339-342
2009
4 Seiten, 5 Bilder, 1 Tabelle, 9 Quellen
Aufsatz (Zeitschrift)
Englisch
Portlandzement , Mörtel , Meerwasser , Konzentration , Korrosionsbeständigkeit , Zeitdauer , mechanische Festigkeit , Elastizitätsmodul , Mikrostruktur , XRD (Röntgenstrahlbeugung) , Rasterelektronenmikroskop , FTIR-Spektroskopie , magnetische Kernresonanz , Calciumchlorid , Hydrat , Ettringit , Depolymerisation , Gel
Preparation method of phosphoaluminate cement clinker and phosphoaluminate cement clinker
| Europäisches Patentamt | 2023
The capacity of phosphoaluminate cement mortar to protect steel from corrosion
| Tema Archiv | 2009
| British Library Online Contents | 2007
Chloride Ion Diffusion of Phosphoaluminate Cement Concrete
| Trans Tech Publications | 2009
Study on Hydration Mechanism of Phosphoaluminate Cement
| British Library Online Contents | 2011