지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국콘크리트학회 International Journal of Concrete Structures and Materials International Journal of Concrete Structures and Materials Vol.8 No.4
- 발행연도
- 2014.12
- 수록면
- 269 - 278 (10page)
이용수
초록· 키워드
오류제보하기
When concrete is being transported through a pipe, the lubrication layer is formed at the interface between concrete and the pipe wall and is the major factor facilitating concrete pumping. A possible mechanism that illustrates to the formation of the layer is the shear-induced particle migration and determining the rheological parameters is a paramount factor to simulate the concrete flow in pipe. In this study, numerical simulations considering various rheological models in the shear-induced particle migration were conducted and compared with 170 m full-scale pumping tests. It was found that the multimodal viscosity model representing concrete as a three-phase suspension consisting of cement paste, sand and gravel can accurately simulate the lubrication layer. Moreover, considering the particle shape effects of concrete constituents with increased intrinsic viscosity can more exactly predict the pipe flow of pumped concrete.
목차
Abstract
1. Introduction
2. Analysis Method for the Pipe Flow of Pumped Concrete
3. Experimental Programs
4. Numerical Simulation for the Pumping Test
5. Results and Discussion
6. Conclusion
References
참고문헌 (35)
참고문헌 신청
1. [학술지(정기간행물)] - Alekseev, S. N / 1952 / On the calculation of resistance in pipe of concrete pumps / Mekhanizatia Storitel’stva 9 (1) : 8 ~ 13
2. [단행본] - Barnes, H. A / 1989 / An introduction to rheology / Elsevier Science
3. [학술지(정기간행물)] - Browne, R. D / 1977 / Tests to establish concrete pumpability / ACI Journal Proceedings 74 (5) : 193 ~ 203
4. [단행본] - Chailmo, T / 1989 / Peculiarities of concrete pumping / Stroikniga
5. [학술지(정기간행물)] - Chateau, X / 2008 / Homogenization approach to the behavior of suspension of non-colloidal particles in yield stress fluids / Journal of Rheology 52 : 489 ~ 506
2. [단행본] - Barnes, H. A / 1989 / An introduction to rheology / Elsevier Science
3. [학술지(정기간행물)] - Browne, R. D / 1977 / Tests to establish concrete pumpability / ACI Journal Proceedings 74 (5) : 193 ~ 203
4. [단행본] - Chailmo, T / 1989 / Peculiarities of concrete pumping / Stroikniga
5. [학술지(정기간행물)] - Chateau, X / 2008 / Homogenization approach to the behavior of suspension of non-colloidal particles in yield stress fluids / Journal of Rheology 52 : 489 ~ 506
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UCI(KEPA) : I410-ECN-0101-2016-532-001074275