抄録
A compact concrete pumping apparatus was developed to evaluate the pumpability of concretes and its applicability as a testing apparatus was studied. Validity of the testing apparatus was confirmed by the pumping experiment of concrete made of normal, recycled and lightweight aggregate. Furthermore, comparison with the pumping experiments of the mobile concrete pump was made using concrete with three different water-cement ratios. As a result, it was concluded that the comparative assessment of concrete pumpability according the type of concrete may be possible by using the compact pumpability test apparatus when the change in concrete quality before and after pumping and the pressures in the pipes are measured.
