In this study, the tendency of flow characteristics according to the mixing design of mortar and mortar standard reference materials was analyzed based on the constituents of the standard reference materials for mortar. As a result, the plastic viscosity of the mortar tends to be maintained according to the amount of fine aggregate, while the yield value tends to increase greatly. On the other hand, in the case of the standard reference materials for mortar, the plastic viscosity tends to increase largely according to the amount of fine aggregate substitutes, while the yield value tends to be almost maintained.

This study is a basic research for the development of composite materials for 3D printing and evaluated the rheological properties according to the blending design of the constituent materials. As a result, as the W/B ratio becomes smaller, the plastic viscosity value and the yield value tend to increase. Next, the plasticity and flow characteristics were differently derived depending on the binders used, and all the binders were considered to have more influence on the yield value than the plastic viscosity value.

The purpose of this study is to understand the rheological characteristics analysis method for the development of reference materials for cement paste considering the required performance of standard materials including particles

The purpose of this study is to understand the rheological characteristics analysis method for the development of reference materials for cement paste considering the required performance of standard materials including particles.

With the increasing use of pumping to place concrete, the development and refinement of the industry practice to ensure successful concrete pumping is becoming an important need for the concrete construction industry.

This paper summarizes the technical methods associated with concrete pumping and the development in concrete pumping that have been published in the technical literature and identifies future research needed for the industry to develop best practices for ensuring successful concrete pumping in the field.