建筑论文的框架（Architecture paper framework）.doc

建筑论文的框架（Architecture paper framework） Source: web author: 779861 thesis test In civil engineering, concrete is one of the most widely used building materials. As we all know, the traditional concrete material consists of cement, sand, lime, gravel and water, and has been playing an important role in building engineering. However, in recent years, high-performance concrete has gradually replaced traditional concrete materials in civil engineering, with its remarkable characteristics and superior performance. Some visionary experts consider the needs of the certain project, the proposed high intensity at the same time, also durability and workability of construction requirements, especially in recent five years, are successfully used in many important engineering high performance concrete. Key words: concrete durability strength standard High performance concrete has rich technical content, although the definition of the trade of high performance concrete with different, but each other that the basic characteristics of the high performance concrete is designed according to the durability, guarantee the mixing content easy to casting and compacted molding, does not occur or as little as possible produced by temperature and shrinkage cracks, hardening has sufficient strength, internal pore structure is reasonable and has low permeability and high chemical erosion. Based on the above characteristics, high performance concrete is the main development direction of concrete technology in China. The core of high performance concrete is to ensure durability. The durability of the project is of great importance to the construction of massive concrete projects. If the durability is insufficient, the consequences will be extremely serious, and even the future society will be heavily burdened. According to a us survey, the total value of concrete infrastructure projects in the United States is about $6 trillion, and maintenance or reconstruction costs are estimated at $300 billio