Abstract:
The purpose of this research was to study the possibility of using an aluminum dross in lightweight concrete block manufactures compared to cellular lightweight concrete (CLC) and autoclaved aerated concrete (AAC). Results have shown that the net present value (NPV) of these three types of blocks are positive and equals to 12, 456, 196, 25, 597, 689, and 16, 328, 687, respectively. Internal rate of return (IRR) equals to 107% 132% and 85%, respectively. Benefit-Cost Ratio (B/C ratio) equals to 2.10, 2.42, and 2.56, respectively. The physical properties of dry density and compressive strength were met the requirement of the Thailand Industry Standard (TIS) 1505-2541 and 2601-2556. In terms of financial analysis, it is possible to use aluminum dross to produce AAC in order to reduce the amount of waste from industry.