Demir Ismail
Afyon Kocatepe University, Faculty of Technical Education, ANS Campus, 03100 Afyonkarahisar, Turkey.
Waste Manag. 2008;28(3):622-7. doi: 10.1016/j.wasman.2007.03.019. Epub 2007 May 23.
The objective of this study is to investigate the utilization potential of several organic residues in clay bricks. Sawdust, tobacco residues, and grass are widespread by-products of industrial and agricultural processes in Turkey. These residue materials have long cellulose fibres. Sawdust and tobacco residues generally are used as fuel, and the grass is utilized for agricultural purposes. The insulation capacity of brick increases with the increasing porosity of the clay body. Combustible, organic types of pore-forming additives are most frequently used for this purpose. For this reason, increasing amounts of organic residues (0%, 2.5%, 5% and 10% in wt.) were mixed with raw brick-clay. All samples were fired at 900 degrees C. Effects on shaping, plasticity, density, and mechanical properties were investigated. The organic residue additions were found to be effective for pore-forming in the clay body with the clay maintaining acceptable mechanical properties. It was observed that the fibrous nature of the residues did not create extrusion problems. However, higher residue addition required a higher water content to ensure the right plasticity. As a result, sawdust, tobacco residues, and grass can be utilized in an environmentally safe way as organic pore-forming agents in brick-clay.
本研究的目的是调查几种有机残留物在粘土砖中的利用潜力。锯末、烟草残渣和草是土耳其工农业生产过程中广泛存在的副产品。这些残余物材料具有长纤维素纤维。锯末和烟草残渣通常用作燃料，草则用于农业目的。砖的保温能力随着粘土体孔隙率的增加而提高。可燃的有机类型的成孔添加剂最常用于此目的。因此，将越来越多的有机残留物（重量分别为0%、2.5%、5%和10%）与生砖粘土混合。所有样品均在900摄氏度下烧制。研究了对成型、可塑性、密度和机械性能的影响。发现添加有机残留物对在粘土体中形成孔隙有效，同时粘土保持可接受的机械性能。观察到残留物的纤维性质不会产生挤压问题。然而，添加较高比例的残留物需要更高的含水量以确保合适的可塑性。结果，锯末、烟草残渣和草可以作为粘土砖中的有机成孔剂以环境安全的方式加以利用。
