抄録
Such characteristics of fresh concrete as workability, consistency, placeability, finishability, pumpability etc. belong to complex qualities which can not be measured directly. In order to evaluate quantitatively the characteristics of fresh concrete, it is necessary to seek the help of the knowledge of rheology which is the field of science dealing with the deformation and the flow of material.
A series of studies have been designed to clarify the feasibility of applying rheology to evaluate the characteristics of fresh concrete. They included the examinations on the results obtained by means of the rotational viscometer and the tri-axial compressive test device, and on the propagation properties of dynamic wave.
The present paper describes the design of a rotation viscometer and the experimental investigation on rheological characteristics of fresh paste and mortar obtained with this apparatus.
