混和材料Ⅳ／高強度コンクリート（材料）

[1037] RHEOLOGICAL PROPERTIES OF CEMENT-BASED MATERIALS INCORPORATING SCMS WITH LOW-VISCOSITY TYPED SUPERPLASTICIZER

Dongyeop HAN¹, Kyunghoon KIM², Cheon-Goo HAN³ (1.Gyeongsang National University, 2.Korea Conformity Laboratories, 3.Cheongju University)

キーワード：Fluidity、Low viscosity typed SP、Plastic viscosity、Rheological properties、SCMs

The aim of this research is to provide a rheological performance of the low viscosity typed superplasticizer (SP) on the cement-based materials incorporating various supplementary cementitious materials (SCMs). As a newly introduced typed SP, the low viscosity typed SP should be used for high performance concrete mixture of low water-to-cementitious materials ratio or incorporating various SCMs. Despite the demand of this new-typed SP, the research about the influence of the low viscosity typed SP on the fluidity or rheological properties of the cement-based materials incorporating SCMs is not sufficient. In this research, hence, to evaluate the performance of low viscosity typed SP on rheological properties of cement-based materials, cement paste and mortar incorporating fly ash, blast furnace slag, and silica fume were tested with generic and low viscosity typed SPs. According to the experiment results, low viscosity typed SP successfully reduced plastic viscosity of the mixtures. Additionally, the low viscosity typed SP reduced yield stress or improved fluidity more than generic typed SP. Based on this research, it is expected to contribute on providing a data for further usage of low viscosity typed SP efficiently.