Abstract
The concrete technology has seen great improvement with the construction of large numbers of ultrahigh buildings at a height of more than 400 meters worldwide. It has been a research hotspot in the field of concrete recently to discuss how to reduce pumping resistance, avoid pumping block and meet the requirements of ultrahigh pumping (h>400m), especially the challenge of the ultrahigh pumping of HS & HP concrete with larger pumping resistance. This paper researches the selection of raw materials and design of mix proportion of C80 concrete used in the construction, and introduces the workable evaluation index, pumpability and pumping project in relation to the ultrahigh pumping of C80 concrete mixture, according to the construction requirements of the one-off pumping height (412 meters) for the C80 HS & HP concrete used in West Tower Project of Zhujiang (Pearl River) New Town in Guangzhou-- the tallest building in South China Region of mainland China.
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