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- Title
酸度系数对复合改性矿渣纤维结构特性的影响.
- Authors
李晓光; 刘云霄; 马昕
- Abstract
Six kinds of slag with acidity coefficient(AC) from 0. 93 to 1. 60 were fabricated under similar fibration process. Geometry parameters and single filament tensile strength as well as amorphous structure were measured and estimated for the fibers with various chemical compositions. A series of fitted empirical equation to AC were established to correlate AC to lengthCdiameter, the aspect ratio of fiber, partial crystalline temperatureCand main peak chemical shift of 29Si and 27Al spectra from solid state magic angle spinning nuclear magnetic resonance (MAS NMR) spectroscopy. The results show that the length and diameter of the fiber increase with increasing AC and the aspect ratio increases when AC is below 1.19 and then declines slightly afterwards. There is a clear linearly progressive correlation between single filament tensile strengths and AC. In additionC the crystalline temperature of the fiber rises with increasing AC. Silicon and aluminum atoms exhibit four-coordination in network of amorphous phase and greater AC can result in higher polymerization forming more stable fiber structure.
- Publication
Jianzhu Cailiao Xuebao: Journal of Building Materials, 2014, Vol 17, Issue 3, p401
- ISSN
1007-9629
- Publication type
Article
- DOI
10.3969/j.issn.1007-9629.2014.03.006