Methods study on dispersion of fibers in CFRC

Through the study of the effect of MKC (a fiber dispersant) on the dispersion of carbon fibers in cement, this paper presents four methods of characterizing fiber dispersion. The fresh mixture method (FM method), which can show the degree of fiber breakage during mixing, is an efficient means to compare fiber dispersion in different fresh mixtures. The scanning electron microscope method (SEM method) is adequate to analyze the microstructure of composite. The measurement of electrical resistance (ERM method) can indirectly suggest the fiber dispersion of composite. The simulation experiment (SE method) is the best method to determine the effect of various fiber dispersion agents. Different methods are fit for different conditions and they can also be used together to gain the true dispersion of fibers. (C) 2002 Elsevier Science Ltd. All rights reserved.