Research on quality control procedure for pumped concrete for supertall buildings in field conditions

Abstract

When pumping concrete for supertall buildings, it is necessary to control the concrete quality to ensure the stability and uniformity of fresh concrete. Then, establishing a quality control process for pumping concrete, which has workability within the rheological range has been studied beforehand. The study process began with mix design for pumping concrete, and laboratory experiments on workability, rheological properties, and mechanical performance. Subsequently, the approved mix design is implemented in actual horizontal pumping tests. This research proposes a quality control process for pumping concrete through laboratory experiments, and performance tests in field conditions when conducting horizontal pumping. The test results can be utilized to evaluate the ability of vertical pumping.

Keywords: Self-compacting concrete; rheology; concrete pressure; vertical pumping; horizontal pumping.