A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Calcium hydroxide produced by cement hydration decreases durability of concrete placed in aggressive solutions and fibre-reinforced cement composites. Pozzolanic properties of metakaolin allow to avoid this drawback. In the present study the effect of a microwave curing on lime consumption in metakaolin blended cements was investigated. The microwave treatment conditions were assessed for plain portland cement pastes, then the lime consumption for various metakaolin contents was evaluated by Fourier transform infrared spectrometry and differential thermal analysis. The results were compared with those obtained for room temperature curing. It was found that the pozzolanic activity of metakaolin increased under microwave treatment. Binders containing 15 % metakaolin were free of calcium hydroxide, while 30 % or 40 % metakaolin were needed at room temperature curing.
Calcium hydroxide produced by cement hydration decreases durability of concrete placed in aggressive solutions and fibre-reinforced cement composites. Pozzolanic properties of metakaolin allow to avoid this drawback. In the present study the effect of a microwave curing on lime consumption in metakaolin blended cements was investigated. The microwave treatment conditions were assessed for plain portland cement pastes, then the lime consumption for various metakaolin contents was evaluated by Fourier transform infrared spectrometry and differential thermal analysis. The results were compared with those obtained for room temperature curing. It was found that the pozzolanic activity of metakaolin increased under microwave treatment. Binders containing 15 % metakaolin were free of calcium hydroxide, while 30 % or 40 % metakaolin were needed at room temperature curing.
Pozzolanic activity of metakaolin under microwave treatment
Puzzolanische Aktivität von Metakaolin durch Mikrowellenbehandlung
Cement and Concrete Research ; 25 ; 265-270
1995
6 Seiten, 7 Bilder, 1 Tabelle, 7 Quellen
Article (Journal)
English
Pozzolanic Activity of Metakaolin Under Microwave Treatment
| Online Contents | 1995
Pozzolanic Activity of Metakaolin Under Microwave Treatment
| British Library Online Contents | 1995
The Preparation and Pozzolanic Activity of Metakaolin Admixtures
| Tema Archive | 2013
The Preparation and Pozzolanic Activity of Metakaolin Admixtures
| British Library Conference Proceedings | 2013
Formation Mechanism and its Pozzolanic Activity of Metakaolin
| British Library Online Contents | 2014