Abstract
Weight changes in epoxy filled with low-cost abundantly available filler, fly ash subjected to immersion in water maintained at an elevated temperature are studied. The effect of volume fraction of the filler on the water absorption characteristics is analysed. The extent and possible modes of water transport in the matrix and in the filler or filler-matrix interface are inferred through the study of absorption data. An attempt to explain this movement through the percolation model is made and support for the inferences arrived at is sought from microscopic observation using Scanning Electron Microscope.
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