The Construction Quality Control Of The Mass Ready Mix Concrete Transmitted By Pumps

In the high –rise, basic baseplate is the mainly construction of receiving strength. The requirement of the whole is very strict. Generally speaking, it should be completed by the whole at a time. With the widely use of the ready mix concrete transmitted by pumps, the construction craft of the mass concrete has been improved greatly. But it leads to the constriction of the mass concrete and the increase of heat to hydrate. These also improve the hardness of the cracking control technology. If we don't take some measures to control the quality, it is worse of the stability in the early time of the concrete's volume, comparing to the one that without pumps. The crack problem of the mass waterproof concrete transmitted by pumps, has been the keystone to resolve and discuss for the construction industry actively. In our country, many practice prove that the crack of the mass concrete mainly caused by the temperature diversification. In the two processes of the temperature's up and down after the pouring of the mass concrete, if the tensile stress caused by temperature diversification exceeds the tensile strength of concrete, the concrete crack will come into being. In order to prevent the temperature crack of the ready mix concrete transmitted by pumps, the key points are the controls of the temperature and the temperature stress. These factors are indispensability to control the crack, such as design, material, construction, informatization management and so on. The instrument to control the concrete crack is dynamic and compositive. We should make use of the construction technology and management condition, make the precept have the maneuverability and the validity. According to the analyze to the infection of the mass concrete's design, material, construction and management, under the direction of the calculated results, and getting across the attemper, conformity to the factors, we can take the compositive instrument of the dynamic control, to realize the preventment the crack of the mass ready mix concrete transmitted by pumps. In the actual project cases, we have gotten the perfect effect on technical economy.