A new technique of processing for waste-expanded polystyrene foams as aggregates
A new technique of processing for waste-expanded polystyrene foams as aggregates
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DOI：
10.1016/j.jmatprotec.2008.07.017
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发表时间：
2009-03-19
影响因子：
6.3
通讯作者：
Demirboga, Ramazan
中科院分区：
文献类型：
--
作者：
Kan, Abdulkadir;Demirboga, Ramazan
在日常生活中，发泡聚苯乙烯泡沫塑料（EPS）被广泛用作包装材料、建筑材料、家用电器等。另一方面，由于废弃EPS在自然界中无法分解，对环境造成了很大的污染。废旧EPS在混凝土技术中的利用较为普遍。本研究开发了一种利用热处理回收废旧EPS泡沫塑料的新工艺。本文介绍了它的特点和过程，以及它的实验系统。该技术使废EPS的体积减少了原来的20倍左右。热处理前，废EPS泡沫的平均密度为10 kg/m(3)，导热系数为0.0368 W/mK，抗压强度为0.12 MPa。在130℃、15 min时，改性效果最佳。改性后，废EPS的密度、导热系数和抗压强度分别提高到217 kg/m(3)、0.0555 W/mK和8.29 MPa。这种经热处理后获得的新材料被称为改性废EPS （MEPS）。(C) 2008 Elsevier b.v.版权所有
In daily life, expanded polystyrene foams (EPS) are widely used as packaging material, construction material, and in household appliances as well as many others. On the other hand, waste EPS has caused lots of environmental pollutions because it cannot be decomposed in nature. Utilization of waste EPS in concrete technology is more common. In this study, a new recycling process developed of the waste EPS foams by using heat treatment. Its characters and process are described in this paper, as well as its experimental system. This technique reduces the volume of waste EPS about 20 times of the original. Before the heat treatment, the average density, thermal conductivity and compressive strength of waste EPS foams were 10 kg/m(3), 0.0368 W/mK, and 0.12 MPa, respectively. The best result of modification was determined at 130 degrees C and 15 min. After the modification, density, thermal conductivity and compressive strength of waste EPS, increased to 217 kg/m(3), 0.0555 W/mK and 8.29 MPa, respectively. This new material, which is obtained after the heat treatment, is called modified waste EPS (MEPS). (C) 2008 Elsevier B.V All rights reserved.