混凝土外加剂在商品混凝土中的应用

1、自学考试本科毕业论文 题目：混凝土外加剂在商品混凝土中的应用 学 院:建工学院专 业:建筑工程技术学 号:2010040142学生姓名:李小强指导教师:霍英日 期:二零一三年四月i摘 要随着我国改革开放和现代化进程的加快，我国的建设规模正日益增大，如何保证建筑工程质量的同时也能使工程能长久的安全使用下去，日益受到各级政府和社会各界的广泛关注。在众多的土木工程建设中，混凝土的应用面之广，使用次数之多是很少见的。尤其中近年来，一种较新的混凝土技术正在快速发展并且运用到许多实际工程项目中，那就是高性能混凝土。混凝土外加剂和社会各界的广泛关注。在众多的土木工程建设中，混凝土的应用面之广，使用次数之多是

2、很少见的。尤其中近年来，一种较新的混凝土技术正在快速发展并且运用到许多实际工程项目中，那就是高性能混凝土。 由于具有高耐久性、高工作性、高强度和高体积稳定性等许多优良特性，被认为是目前全世界性能最为全面的混凝土，至今已在不少重要工程中被采用，特别是在桥梁、高层建筑、海港建筑等工程。本文主要介绍了高性能混凝土发展的历史背景及目前国内外的研究现状，阐明了高性能混凝土的特性，列举了高性能混凝土在国内外研究应用中的重要成果，并对其发展趋势作出展望。随着我国建筑向高层化、大型化、现代化的发展，hpc必将成为新世纪的重要建筑工程材料。关键词：混凝土外加剂；耐久性；体积稳定性abstract along w

3、ith our country the speeding up of reform and opening up and modernization, our countrys construction scale is increasing, how to ensure the quality of construction projects at the same time can also make the project to the safe use of for a long time, increasingly wide attention by all levels of go

4、vernment and the social from all walks of life. in a wide range of civil engineering construction, the concrete application of the wide, use frequency is very rare. especially in recent years, a relatively new concrete technology is rapid development and applied to many practical engineering project

5、s, it is of high performance concrete. high performance concrete (high performance concrete, hpc) with high durability, high workability, high strength and high volume stability of many good characteristics, is considered to be the most comprehensive performance of concrete around the world, has bee

6、n adopted in many important engineering, especially in bridges, high-rise building, port construction and other projects. high-performance concrete is mainly introduced in this paper the development of the history background and research status at home and abroad, illustrates the features of high performance concrete, lists the important achievements of the research on application of high performance concrete at home and abroad, and its development trend are prospected. along with our country construction to the high-level, large-scale, modern development of hpc will become the important