Thermophysical Properties of Sawdust and Coconut Coir Dust Incorporated Unfired Clay Blocks

Sawdust and coconut coir dust are agro-wastes/by-products which suitable for use as raw materials to manufacture unfired clay blocks due their excellent physical mechanical properties. A limited number of studies have been conducted on the utilisation these agro-wastes in block production, they mostly devoted investigating physicomechanical properties, with less attention given thermal Moreover, majority used chemical binders (cement lime) combination agro-waste, thus increasing carbon footprint embodied energy samples. Furthermore, no research has performed performance when incorporated into at wall scale. Therefore, address limitations, present study developed incorporating sawdust (0, 2.5, 5, 7.5% by weight), without binders, evaluated performance, both individual scales. The experiments were divided two phases. In first phase, sample was tested basic Based results small walls dimensions 310 mm × 215 100 built second using best performing mixture from each waste type, assessed an adapted hot box method. measuring heat transfer rate cold environments comparing reference wall. showed that conductivity decreased 0.36 W/mK sample, 0.19 0.21 indicating improvement insulation. a resistance around 48% 35%, respectively, over Consequently, findings this will provide additional essential information help assessing prospective applications insulating material manufacturing blocks.