Details
Original language | English |
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Title of host publication | 3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference |
Subtitle of host publication | Think Globally, Build Locally, Proceedings |
Publisher | Precast/Prestressed Concrete Institute |
ISBN (electronic) | 9780937040904 |
Publication status | Published - 2010 |
Event | 3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference 2010 - Washington, United States Duration: 29 May 2010 → 2 Jun 2010 |
Publication series
Name | 3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference: Think Globally, Build Locally, Proceedings |
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Abstract
The impression of an attractive concrete surface is dominated by a sensitive system of fresh concrete, separating agent and formwork material. Furthermore it depends on factors including e.g. the casting technique, workmanship and weather conditions. The following discussions are based on surfaces with a smooth and homogeneous appearance. However, sometimes unrequested phenomena occur like clouding, marblings, pore formation and discolorations. In order to minimize these phenomena, it is necessary to develop special concrete compositions for attractive concrete. During a systematic research important influences of the concrete composition on the characteristics exposed concrete have been found and approaches for an exposed concrete technology which is insensitive relating to imperfections of the formwork were formulated. The freshly mixed concrete characteristics of these compositions like viscosity and workability have been changed compared to conventional concrete compositions. The joint research activities are going on concentrating on practical executions. The different behavior during placing and compacting of this new attractive concrete has to be communicated and the execution on site has to be practised e.g. with the aid of some specially developed testing formworks. The report will address both laboratory tests and practical experience on site.
Keywords
- Attractive concrete, Concrete engineering, Concrete technology, Exposed concrete, Testing formworks
ASJC Scopus subject areas
- Engineering(all)
- Building and Construction
- Engineering(all)
- Civil and Structural Engineering
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3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference: Think Globally, Build Locally, Proceedings. Precast/Prestressed Concrete Institute, 2010. (3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference: Think Globally, Build Locally, Proceedings).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Which concrete composition makes excellent attractive concrete surfaces?
AU - Lohaus, Ludger
AU - Fischer, Karen
PY - 2010
Y1 - 2010
N2 - The impression of an attractive concrete surface is dominated by a sensitive system of fresh concrete, separating agent and formwork material. Furthermore it depends on factors including e.g. the casting technique, workmanship and weather conditions. The following discussions are based on surfaces with a smooth and homogeneous appearance. However, sometimes unrequested phenomena occur like clouding, marblings, pore formation and discolorations. In order to minimize these phenomena, it is necessary to develop special concrete compositions for attractive concrete. During a systematic research important influences of the concrete composition on the characteristics exposed concrete have been found and approaches for an exposed concrete technology which is insensitive relating to imperfections of the formwork were formulated. The freshly mixed concrete characteristics of these compositions like viscosity and workability have been changed compared to conventional concrete compositions. The joint research activities are going on concentrating on practical executions. The different behavior during placing and compacting of this new attractive concrete has to be communicated and the execution on site has to be practised e.g. with the aid of some specially developed testing formworks. The report will address both laboratory tests and practical experience on site.
AB - The impression of an attractive concrete surface is dominated by a sensitive system of fresh concrete, separating agent and formwork material. Furthermore it depends on factors including e.g. the casting technique, workmanship and weather conditions. The following discussions are based on surfaces with a smooth and homogeneous appearance. However, sometimes unrequested phenomena occur like clouding, marblings, pore formation and discolorations. In order to minimize these phenomena, it is necessary to develop special concrete compositions for attractive concrete. During a systematic research important influences of the concrete composition on the characteristics exposed concrete have been found and approaches for an exposed concrete technology which is insensitive relating to imperfections of the formwork were formulated. The freshly mixed concrete characteristics of these compositions like viscosity and workability have been changed compared to conventional concrete compositions. The joint research activities are going on concentrating on practical executions. The different behavior during placing and compacting of this new attractive concrete has to be communicated and the execution on site has to be practised e.g. with the aid of some specially developed testing formworks. The report will address both laboratory tests and practical experience on site.
KW - Attractive concrete
KW - Concrete engineering
KW - Concrete technology
KW - Exposed concrete
KW - Testing formworks
UR - http://www.scopus.com/inward/record.url?scp=85013897310&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85013897310
T3 - 3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference: Think Globally, Build Locally, Proceedings
BT - 3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference
PB - Precast/Prestressed Concrete Institute
T2 - 3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference 2010
Y2 - 29 May 2010 through 2 June 2010
ER -