PROCESS FOR PREPARATION OF HIGH COMPRESSIVE STRENGTH AND LOW COST CONCRETE USING HYPO-SLUDGE

摘要

A process for preparation of 'low cost concrete' by blending cement with hypo-sludge is disclosed here. This innovation, when implemented, will mitigate the disposal and pollution problems due to hypo-sludge and help developing high strength 'green concrete'. To make good quality paper limited number of times recycled paper fibers can be used which produces a large amount of solid waste. The innovative use of fnpo-sludge in concrete formulations as a supplementary cemenlitious material was tested as an alternative to traditional concrete. The cement has been replaced by waste paper sludge in the range of 0 (without hypo-sludge). 10. 20. 30 and 40 wt%of Hypo-Sludge. M-25. Concrete mixtures were produced, tested alter preparing test specimens. The test results were compared in terms of compressive strength and split tensile strength with those of conventional concrete. These tests were carried out to evaluate the mechanical properties of the cement and hypo-sludge composites up to 28 days of curing. The lest results indicated that the compressive strength increased by the addition of hypo-sludge up to 30 wl%. And a further increase in hypo sludge reduced the strength gradually. An optimum concentration of hypo-sludge for partial replacement of cement was arrived at.