外文翻译封面(英译汉).doc

学 生 毕 业 设 计（论 文） 英 文 翻 译 课题名称 合肥学院产学研大楼设计 姓 名 学 号 班 级 系 部 建筑工程系 指导教师 2014 年12月 一、外文原文 Influence of silane based water repellent on the durability properties of recycled aggregate concrete This paper aims to investigate the durability properties of recycled aggregate concrete treated with silane-based water repellent agents, since the high water absorption of recycled aggregate concrete is a major factor jeopardizing its durability. Different dosages of silane-based water repellent agents were either coated on the surface of the concrete (hereafter ‘‘surface silane treatment’’) or integrally added into the concrete mixture (hereafter ‘‘integral silane treatment’’). The mechanical and durability properties of the treated concrete were evaluated. It was found that integral silane treatment can improve the durability of recycled aggregate concrete, but may lead to reductions in compressive strength; surface silane treatment is more effective in improving the resistance of recycled aggregate concrete to capillary water absorption, carbonation and chloride penetration than integral silane treatment. 1.Introduction Continuous urbanization and redevelopment of cities causes serious problems in construction and demolition waste disposal [1]. For instance, in Hong Kong, about 12 million tonnes of construction and demolition (CD) waste was generated in 2009. About 90% (by weight) of the above CD wastes were inert materials such as rock, concrete and soil which are usually disposed of in reclamation/earth filling projects. The reuse of these CD wastes not only conserves the finite raw materials, but also alleviates the demand on the public landfill capacity. One of the ways to reuse CD wastes is to recycle them as aggregates in concrete [2]. The economic and environmental benefits of using recycled aggregates have been widely recognized. In 2002, the Hong Kong government set up a temporary recycling facility in Tuen Mun which actively promoted the use of