Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Microstructure of Autoclaved Aerated Concrete Hydration Products in Different Water-to-Binder Ratio and Different Autoclaved System
Using XRD and SEM analysis, the types and morphology of autoclaved aerated concrete (AAC) hydration products in different water-to-binder ratio (w/b) and different autoclaved system were studied. Strength test shows that, Using w/b=0.25 and autoclaved curing 190 °C for 8h, AAC with dry density 765 kg/m3 and compressive strength 7.5 MPa was made. XRD and SEM analysis indicate that, the higher the autoclaved temperature is, the smaller the size of hydration products (most of them are tobermorite and hydrogamet) is, and the crystallinity has a little increase; with the extension of autoclaved time, the size of products is smaller, the crystallinity is first increased and then decreased, the crystal form of tobermorite turns 1.1 nm into 1.4 nm; the less the w/b is, the smaller the size of products is, and the higher the crystallinity is, and tobermorite turns 1.1 nm into 1.4 nm.
Microstructure of Autoclaved Aerated Concrete Hydration Products in Different Water-to-Binder Ratio and Different Autoclaved System
Using XRD and SEM analysis, the types and morphology of autoclaved aerated concrete (AAC) hydration products in different water-to-binder ratio (w/b) and different autoclaved system were studied. Strength test shows that, Using w/b=0.25 and autoclaved curing 190 °C for 8h, AAC with dry density 765 kg/m3 and compressive strength 7.5 MPa was made. XRD and SEM analysis indicate that, the higher the autoclaved temperature is, the smaller the size of hydration products (most of them are tobermorite and hydrogamet) is, and the crystallinity has a little increase; with the extension of autoclaved time, the size of products is smaller, the crystallinity is first increased and then decreased, the crystal form of tobermorite turns 1.1 nm into 1.4 nm; the less the w/b is, the smaller the size of products is, and the higher the crystallinity is, and tobermorite turns 1.1 nm into 1.4 nm.
Microstructure of Autoclaved Aerated Concrete Hydration Products in Different Water-to-Binder Ratio and Different Autoclaved System
Huang, Zhao-Ming (Autor:in) / Yuan, Yu-Fei (Autor:in) / Chen, Ze-Jie (Autor:in) / Wen, Zi-Yun (Autor:in)
2012
6 Seiten
Aufsatz (Konferenz)
Englisch
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