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A Study on the Coating Thickness of Surface Modified Aggregate by Using the Excess Paste Theory and Rheology Value

잉여 페이스트 이론과 레올로지 정수를 이용한 표면 개질골재의 피막두께 평가에 관한 연구

  • 최희섭 (키타미공업대학 공학부 사회환경인프라 공학코스) ;
  • 최형길 (경북대학교 건축학부)
  • Received : 2018.12.05
  • Accepted : 2019.01.08
  • Published : 2019.09.01

Abstract

This study applies to the surface modification technique by coating the surface of aggregates using the modified paste such as cementitious materials in order to develop completely recycling technology of coarse aggregate. In this case, coating thickness of modified aggregate can be considered that the decision is dependent on the viscosity and tenacity of modified paste. In this study identify the flow properties of the fresh modified paste, and examined for the coating thickness of modified aggregate. As a result, it was possible to design a quantitative coating thickness of modified paste assuming that a modified paste to a Bingham Fluid and consider by excess paste theory and rheology constant (yield value). Accordingly, it is considered that the quantitative mix design of concrete using by surface modified aggregates will be possible.

Keywords

Coating thickness of modified aggregate;Excess paste theory;Modification paste;Rheology;Yield value

Acknowledgement

Supported by : National Research Foundation of Korea (NRF)

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