Study on Laboratory Test Method for Evaluation of Pumpability of Concrete Based on Pressurization History
By J. Liang, J. Sakamoto, T. Maruya and T. Hashimoto
Concrete Journal, Vol.58, No.12, Dec. 2020
- Synopsis
- Knowing the pumpability of concrete is extremely important for concrete work, yet there is no established laboratory test method to quantitatively evaluate the pumpability of concrete. As a result, concrete pumping tests at actual construction scale, which require considerable expenditure of money and effort, are depended on. Therefore, in this study, for the purpose of evaluating the pumpability of concrete with slump of 8 cm to 21 cm by an indoor test, a testing apparatus for simulating accumulated pressure, which is one of the characteristics of concrete, was built, verification of the validity of said apparatus and the proposed test method using said apparatus was conducted, and the possibility of field application was examined.
- Keywords:
- Pumpability, Conveying pipe blockage, Laboratory test, Pressurization history, Allowable accumulated pressure
