Paper mill sludge (PMS) and degraded municipal solid waste (DMSW) blended firedbricks–a review

摘要

As a potential pathway to sustainable construction, this study demonstrates the feasibility of incorporating paper mill sludge (PMS) and degraded municipal solid waste (DMSW) as the constituents for production of fired bricks. The raw materials, PMS, DMSW and two different soils, i.e. laterite soil and alluvial soil, were mixed together in different proportions ranging from 5 to 20%. Specimens of these mixtures were then fired at 850 and 900°C respectively. Various properties such as bulk density, linear shrinkage, loss on ignition, water absorption, compressive strength, and modulus of elasticity on light of the respective Indian and ASTM standard codes were studied and compared. An optimum constituent mix of 10% PMS and 20% DMSW with (laterite or alluvial) soil fired at temperature of 900 oC was found to be most appropriate for brick production. Attribution of XRD and IR spectra to different phases was accomplished. The ultimate uptake of this study is net saving in the energy consumption of external fuel by mixing PMS and DMSW.