Research On Preparation Of C80Self-compacting Concrete

With the innovation of architectural design concept, the structural design of largeconstruction projects and landmark is becoming increasingly complex. Which putforward higher requirements of concrete technology and construction. Concreteproducts not only a good working to ensure complex structure filled with densecomponent, but also need to have a high strength, which can reduce the structuralsection and improve the use of building area. However, the application of C80compacting concrete examples in Chongqing works less, and industrial productiontechnology is not yet mature. Thus, the research and promotion of C80self-compactingconcrete is particularly important.Raw materials used in this article are conform to the requirements of the C80self-compacting concrete, the test methods can reaction mixture workability effectively,mixture ratio design in accordance with the full calculation, although sand ratiocalculation is on the low side, but it concluded the optimal ratio after adjustment. Thepaper makes self-compacting concrete of the secondary grade successfully, the average28d compressive strength of standard test is96.3Mpa, and it has a good durability.Paper find out the basic law and the best value of the mixing ratio parameters influenceon the workability and mechanical properties of concrete mixture, which provides someexperience of self-compacting concrete of C80.