—The laboratory-scale study was conducted to assess the feasibility of using dredged sediments from Lumsai canal with rice husks to produce bricks. This study was investigated into three different proportions of dredged sediments with rice husks ranging from 0, 5, 10, 15, and 20 percent (by weight of rice husks or rice straws) as raw materials in producing bricks. The characteristics of the dredged sediments, rice husks, and fired bricks were analyzed using X-ray fluorescence (XRF) and X-ray diffraction (XRD), respectively. The physical-mechanical properties of fired bricks were found to comply with the criteria for bricks (Thai Industrial Standards 77-2545). The obtained results indicated that major chemical compositions of dredged sediments were silica (SiO2) 56.27 percent, alumina (Al2O3) 11.76 percent and iron oxide (Fe2O3) 7.84 percent, and heavy metal contents including Cr, Cu, Zn, As, Cd, Hg, Pb, Mn, Sr, and Ni were lower than the soil quality standard. Results of this study showed that bricks made from dredged sediments with 5 percent of rice husks were suitable as primary raw materials in the production of bricks without harmfulness.
—Bricks, dredged sediments, rice husks.
W. Tangprasert and S. Jaikaew were with the Department of Environmental Science, Faculty of Science, Chulalongkorn University, Bangkok 10330 Thailand (e-mail: firstname.lastname@example.org, email@example.com).
N. Supakata is with the Department of Environmental Science, Faculty of Science, Chulalongkorn University, Bangkok 10330 Thailand (e-mail: firstname.lastname@example.org).
Cite:W. Tangprasert, S. Jaikaew, and N. Supakata, "Utilization of Dredged Sediments from Lumsai Canal with Rice Husks to Produce Bricks," International Journal of Environmental Science and Development vol. 6, no. 3, pp. 217-220, 2015.