콜드조인트 발생에 따른 200MPA급 초고성능 콘크리트의 전단부착성능 평가 연구
- Title
- 콜드조인트 발생에 따른 200MPA급 초고성능 콘크리트의 전단부착성능 평가 연구
- Other Titles
- An Study on Bonding Performance Evaluation of UHPC in Accordance with Delay Time of Cold Joints
- Author
- 이한승
- Keywords
- 초고성능 콘크리트; 콜드조인트; 전단부착강도; 직접전단시험; ultra-high-performance concrete; cold joint; bonding shear strength; direct shear test
- Issue Date
- 2017-04
- Publisher
- 대한건축학회
- Citation
- 대한건축학회 2017년도 춘계학술발표대회논문집, v. 37, No. 1, Page. 757-758
- Abstract
- This study aims to derive
the optimal
condition
that ensures
the monolithicity
of ultra-high
performance
concrete
(UHPC),
through
the
evaluation
of bonding
shear performance
with respect
to the time of cold joint occurrence
during
the placement.
From the direct shear test,
while the normalized
bonding
shear strength
reduction
of UHPC
with the delay time of 15 minutes
was the lowest
at around
8%, a dramatic
degradation
of bonding
shear performance
was observed
after 15 minutes.
XRD analysis
of the middle
and surface
sections
was performed
in
order to analyze
the composition
of the thin film formed
at the surface
of UHPC,
and as a result, the main ingredient
appeared
to be SiO2
from the XRD pattern
of middle
and surface
sections,
which is believed
to be the result of the rising of SiO2-based
filler, used as anadmixture
in this study, toward
the surface,
due to its low specific
gravity.
- URI
- http://www.dbpia.co.kr/Journal/ArticleDetail/NODE07178648https://repository.hanyang.ac.kr/handle/20.500.11754/103235
- ISSN
- 2287-5786
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ARCHITECTURE(건축학부) > Articles
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