Improving rubber concrete by waste organic sulfur compounds
Improving rubber concrete by waste organic sulfur compounds
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DOI：
10.1177/0734242x09103843
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发表时间：
2010-02-01
影响因子：
3.9
通讯作者：
Lee, Maw-Tien
中科院分区：
文献类型：
--
作者：
Chou, Liang-Hisng;Lin, Chun-Nan;Lee, Maw-Tien
在这项研究中，使用废轮胎作为混凝土添加剂进行了调查。一段时间以来，研究人员一直在研究混凝土的物理特性，以确定为什么橡胶颗粒的加入会导致混凝土降解。已经开发了几种方法来改善橡胶颗粒和水泥水化产物（C-S-H）之间的结合，希望产生具有改善的机械强度的产物。利用炼油厂废弃有机硫化合物对废轮胎进行表面改性。两亲性的有机硫化合物可以提高橡胶的亲水性，增加橡胶与C-S-H之间的分子间相互作用力。本研究制备了C-S-H胶体探针，利用原子力显微镜测量分子间相互作用力。实验结果表明，废有机硫化合物处理后的橡胶颗粒具有较好的亲水性。此外，随着废有机硫化合物在橡胶粒子表面的吸附，分子间相互作用力增大。混凝土样品的压缩，拉伸和弯曲强度，包括橡胶颗粒与有机硫化合物处理也显着增加。
In this study, the use of crumb tyres as additives to concrete was investigated. For some time, researchers have been studying the physical properties of concrete to determine why the inclusion of rubber particles causes the concrete to degrade. Several methods have been developed to improve the bonding between rubber particles and cement hydration products (C-S-H) with the hope of creating a product with an improvement in mechanical strength. In this study, the crumb tyres were treated with waste organic sulfur compounds from a petroleum refining factory in order to modify their surface properties. Organic sulfur compounds with amphiphilic properties can enhance the hydrophilic properties of the rubber and increase the intermolecular interaction forces between rubber and C-S-H. In the present study, a colloid probe of C-S-H was prepared to measure these intermolecular interaction forces by utilizing an atomic force microscope. Experimental results showed that rubber particles treated with waste organic sulfur compounds became more hydrophilic. In addition, the intermolecular interaction forces increased with the adsorption of waste organic sulfur compounds on the surface of the rubber particles. The compressive, tensile and flexural strengths of concrete samples that included rubber particles treated with organic sulfur compound also increased significantly.