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Characterization of reinforced chemically bonded ceramics
AbstractTwo different approaches were taken to increase the flexural strength of a chemically bonded ceramic (CBC) composite material. In the first method, poly-(p-phenylene terephthalamide) (Kevlar 29) fibers were subjected to surface modification by alkaline hydrolysis, and these surface-modified fibers were used as a reinforcing agent for the CBC composite, at a level of 0·2% (w/w). In the second approach, up to 5% (dry wt) of poly(acrylic acid) was added as a water-reducing plasticizer to the mixture, in an effort to decrease the void volume of the cementitious composite. Several variations on each of these two methods were also tested, including the use of different high-modulus fibers and other water-soluble polymers. Test bars made from the different compositions were subjected to mechanical testing, and the microstructure of the fracture surfaces was examined by scanning electron microscopy. Improvements in flexural behavior were found for both cases.
Characterization of reinforced chemically bonded ceramics
AbstractTwo different approaches were taken to increase the flexural strength of a chemically bonded ceramic (CBC) composite material. In the first method, poly-(p-phenylene terephthalamide) (Kevlar 29) fibers were subjected to surface modification by alkaline hydrolysis, and these surface-modified fibers were used as a reinforcing agent for the CBC composite, at a level of 0·2% (w/w). In the second approach, up to 5% (dry wt) of poly(acrylic acid) was added as a water-reducing plasticizer to the mixture, in an effort to decrease the void volume of the cementitious composite. Several variations on each of these two methods were also tested, including the use of different high-modulus fibers and other water-soluble polymers. Test bars made from the different compositions were subjected to mechanical testing, and the microstructure of the fracture surfaces was examined by scanning electron microscopy. Improvements in flexural behavior were found for both cases.
Characterization of reinforced chemically bonded ceramics
Dimitry, Sid A. (author)
Cement and Concrete Composites ; 13 ; 257-263
1991-02-16
7 pages
Article (Journal)
Electronic Resource
English
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