Design And Construction About Planceer Of Mass Concrete In Basement

In recent years,with economic development, the basement which has super size has got more and more application in city construction.Under the force and the waterproof requirement, this type of project’s basement planceers not only belong to ultra-length structure but also belong to mass concrete structure. The planceer with crack often occur in actual engineering because of temperature stress. Therefore, backing failure, reinforcement corrosion, goundwater seepage and other issues result in reduced structural durability and seriously affect the use of the building features. These conditions must be strictly controlled. Thus, the large mass concrete basement floor area of the design and construction measures for research has a very important engineering significance.In this paper, Guangzhou Textile Expo Centre Project, discusses in detail theengineering design and construction process of the considered or applied to a variety ofmeasures.The main contents include the following aspects:1. How to choose varieties to reduce heat of hydration of cement. How to choose the thickness of aggregate, sand control to increase the rate of crack resistance of the concrete itself. How to control the incorporation of fly ash to reduce bothplayed the role of hydration heat of concrete, but will not affect the density of the concrete itself. Introduced a large volume of concrete mix design principles. Discusses in detail the reducing agent, expansive classification, the role of theory and application in thisproject, and highlight the expansive use of conditions, indicating the use of expansive unreasonable adverse effects.2. About the structural design process, how to control the crack width, configuration, and strengthen-length steel reinforcement, a reasonable choice impermeability of concrete grade and other measures to control the conduct of concrete cracks. Details about the crack fiber and polypropylene fiber principle role in this project. After pouring focuses on the design principles and the application of this project, describes the construction method of pouring after the adverse impact of unreasonable. By analyzing the expanding and strengthening the role of theory and design with principles, indicating limitations in engineering applications. 3. By about the concrete construction process of mixing, pouring, temperature control, conservation and other measures, indication cracks in mass concrete construction on the importance of control. This project focuses on the application to the secondary feed mixing paste wrapped in stone, the second vibrator, water cooling circulating water, pouring and other layered construction process. Jump through the discussion of the role of warehouse construction method and after the pouring principle and comparative analysis shows that its role in the project limited.Finally, textile and Exhibition Center, Guangzhou actual project results, analyze the causes of leakage, and repair of the remedial measures proposed grouting to repair buildings used functions. According to other engineering experience, proposed induced joints, expansion joints and groove the hydrophobic layer plate of the three new measures to control crack permeability, the construction of new projects for the future to provide more impermeable crack from the experience.