Technology Study Of The Underground Base Concrete Cracks Control And Construction In Dongfang Square In Rizhao

Currently, the most important mass concrete construction, the project is the most prominent cracks, it would affect the permeability of concrete structures and the safety of aesthetic, affecting the normal use of the mass concrete. But how complete control and resolve massive concrete cracks, is not yet a definite conclusion, the massive concrete Crack Control, is an international technical problems, some protocols, standards, design and construction standards will not completely solve the problem. This paper carefully analyze the massive concrete cracks in the mechanism of causes and factors, from the massive concrete structural design, raw materials, concrete formula, construction, maintenance and other aspects, and in light of actual projects on how to control and resolve massive concrete temperature and cracks, conducted technical studies, a number have a workable and practical measures and suggestions.Massive concrete on the definition of a domestic At present there is no uniform rules. In China, the massive concrete concrete structure which generally refers to the smallest size =1m entities, or are expected to be caused by the hydration of cement concrete cracks caused by too large temperature difference between inside and outside the concrete. For massive concrete targets for controlling the temperature difference between inside and outside, is not yet a clear uniform standards. According to the construction experience, in general control 25℃. Practice proves : concrete and the temperature coefficient of the surface temperature, heat one side of the structure section above...