Authors:Martina Draganovska, Alena Sicakova, and Marian Holub
This paper presents the results of basic research using sludge as a secondary material produced during the process of wet aggregates grading. The basic objective of this study was to identify important properties of sludge for the further use as substitute filler in the cement composites. Results of tests executed, like determination of particle size, bulk density, chemical composition (XRF method), mineralogical composition (XRD method) and both clay lumps and humus content were compared with those of natural aggregate (reference sample), as well as with standard criteria. For all tested properties, sludge shows satisfactory parameters, except the granularity. Here samples demonstrate high portions of fine particles in the 0/4 range. Thus can be concluded, sludge has a potential to be used as filler in cement composites requiring bigger amounts of fine particles, like self-compacting concretes.
Eštoková A, Kovalcíková M., Sicáková A. Leaching of calcium and silicon from cementcomposites in sulphate environment, CEST 2013: Proceedings of the 13th International Conference on Environmental Science and Technology , 5–7 September 2013, Athens, Greece
Authors:Lucia Kidalova, Eva Terpakova, and Nadezda Stevulova
Pehanich J. L., Blankenhorn P. R., Silsbee M. R. Wood fiber surface treatment level effects on selected mechanical properties of wood fiber-cementcomposites, Cement and Concrete Research , Vol. 34, 2004, pp. 59