(258.6 kg/m3) compared to that of the clay (1120 kg/m3) and RHA
(550.54 kg/m3). Moreover, increase in porosity with waste addition
also plays an important role in reducing the weight of the specimens.
Similar observation was reported in previous study [27].
Lighter weight reduces the transportation and labor cost while,
at the same time reduction in structural load and flexibility in
architectural design can be achieved. It also resulted into easier
handling and storing.