Study Of Mass Concrete Foundation Slab Temperature Cracks Control Measures

In the process of building modern housing construction, the rise and more and more high-rise building, since the foundation slab to bear all the load of the upper structure, so the foundation slab of high-rise and high-rise building usually larger thicker, are generally bulky concrete project. Mass concrete foundation slab, since the heat of hydration of cement is large and difficult to dissipate, may lead to the concrete and its surface temperature difference is too large, so that a temperature cracks in concrete measures were needed for the emergence and development of temperature cracks of conduct control.At present, for the temperature cracks in foundation mass concrete control problems, the vast majority of engineering and technical personnel believe that pouring concrete after completion of its real-time monitoring of temperature, moisture and insulation work to strengthen the concrete, so as to achieve the purpose of controlling the temperature cracks. Obviously, this approach is focus on concrete pouring is completed. In addition, some scholars have suggested that the massive concrete foundation slab, the preferred low heat cement, thus reducing heat of hydration of cement.This paper argues that the focus control in foundation mass concrete temperature crack is not in concrete pouring temperature monitoring, thermal insulation moisture conservation work, control of the temperature cracks in the concrete material should, on the nature of the problem material characteristics.This article discusses the crack generation mechanism through foundation mass concrete temperature and its influencing factors, temperature crack control theory and control measures, combined with specific examples of projects, with the ANSYS finite element tool, you can be able to explore a large master before construction the method of concrete temperature conditions and control the inside and outside temperature difference, thereby greatly reducing the possibility to produce concrete temperature cracks control of mass concrete temperature crack fundamentally.The main work of this paper are:1) Discusses the mechanism of mass concrete foundation slab temperature stress and factors such as temperature stress.2) Discusses the temperature cracks control theory and actual construction of the control measures.3) According to the mechanism of temperature cracks, control theory, control measures, combined with Kunming Taipei Area with specific engineering high-rise building basement foundation mass concrete, Thermal properties of mass concrete.4) The use of finite element software ANSYS simulation model to establish the thermal properties of concrete, advance control temperature difference inside and outside the concrete.5)Before and after construction of the master control thermal properties of concrete, concrete pouring in the implementation process supplemented by corresponding measures to strengthen control of temperature cracks and ensure the quality of concrete.