公路建设中使用商品混凝土的弊端中英文浅谈.doc

公路建设中使用商品混凝土的弊端 商品混凝土以其独具的优势而被越来越广泛地应用于公路建设中，但在应用中也存在一定的问题。为了掌握商品混凝土在公路建设中存在的主要问题，结合工程实践经验，对商品混凝土在公路建设中存在的弊端进行了探讨，为现场施工提供技术参考。 Concrete products for its unique advantages and is more and more widely used in highway construction, but also some problems in the application. In order to grasp the main problems of commodity concrete in highway construction, combined with engineering practice experience, some drawbacks of commodity concrete in highway construction are discussed in this paper, to provide technical reference for site construction. 　　1商品混凝土在公路建设中的应用 1 commercial concrete application in highway construction 　　商品混凝土，又称预拌混凝土，简称为“商砼（tóng）”，俗称灰或料：是由水泥、骨料、水及根据需要掺入的外加剂、矿物掺合料等组分按照一定比例，在搅拌站经计量、拌制后出售并采用运输车，在规定时间内运送到使用地点的混凝土拌合物。商品混凝土的实质就是把混凝土从过去的施工现场搅拌分离出来，由专门生产混凝的公司集中搅拌，并以商品的性质向需方供应。 Commodity concrete, also known as the ready-mixed concrete, referred to as bituminous concrete (tong), commonly known as grey or material: is made of cement, aggregate, water and mixed with admixture of according to need, such as mineral admixture components according to certain proportion, in sale and after measuring, mixing station used truck, delivery within the time required to use the location of the concrete mixture. Is the essence of the commercial concrete mix concrete construction site from the past, focused by the company specializing in the production of concrete mixing, and to the nature of the goods to the buyers supplies. 　　改革开放后，我国的建筑技术得以发展，经济建设突飞猛进，城市基础设施建设投入加大，特别是进入20世纪90年代末，混凝土工程的大型化、多功能化、施工与应用环境的复杂化、应用领域的扩大化以及资源与环境的优化，人们对传统的场拌混凝土在各个方面都提出了更高的要求。混凝土场拌工艺，在很大程度上，既不能满足城市环水保要求，又难以满足混凝土具有的高性能化和多功能化的需要。而商品混凝土的生产集中、规模大，便于管理，能实现建设工程结构设计的各种要求，有利于新技术、新材料的推广应用，特别有利于散装水泥、混凝土外加剂和矿物掺合料的推广应用。这是保证混凝土具有高性能化和多功能化的必要条件，同时能够有效的节约资源和能用，减少了粉尘、噪音、污水等污染，改善了城市居民的工作和居住环境，减少了施工现场建筑材料的堆放，明显改变了施工现场脏、乱、差等现象，提高了施工现场的安全性，施工的文明程度得到了根本性的提高。 After Chinas reform and opening up, Chinas construction technology development, economic development by leaps and bounds, urban infrastructure co