Results 271 to 280 of about 76,078 (287)

Modeling Dynamic Segregation of Self-Consolidating Concrete

ACI Materials Journal, 2009
Segregation is a common problem in self-consolidating concrete, which uses a high dosage of high-range water-reducing admixture to achieve high flow and passing abilities. A numerical model based on rheology and fluid dynamics was developed to calculate dynamic segregation, the separation of aggregate and paste when the concrete is flowing.
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Implementation of Self-Consolidating Concrete for Prestressed Concrete Girders

SP-228: 7th Intl Symposium on the Utilization of High-Strength/High-Performance Concrete, 2005
This report documents the first experience of using self-consolidating concrete for pretressed concrete bridge girders in North Carolina. Under construction in eastern North Carolina was a multi-span bridge which used one hundred thirty AASHTO Type III girders, each 54.8 ft (16.7 m) long.
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Air-Void Stability in Self-Consolidating Concrete

ACI Materials Journal, 2002
Ensuring an adequate air-void system in concrete is essential to obtain proper resistance to freezing/thawing and deicer scaling. With increasing usage of highly flowable and self-consolidating concretes, it is important to ensure that these concretes can secure a proper air-void system that remains stable during agitation, placement, and setting. This
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Self-consolidating concrete: now and future

2009
Self-Consolidating Concrete (SCC) has transformed the way that concrete construction is performed throughout the world. The fact that SCC changed the way that concrete is processed places it on the cutting edge of technological and scientific developments. While SCC may no longer be considered a “new concrete”, there are still significant challenges to
S. P. Shah, R. Ferron, N. Tregger, FERRARA, LIBERATO, M. Beakraft   +4 more
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Performance criteria for self-consolidating concrete

2010
Self-consolidating concrete (SCC), also called self-compacting concrete, was first developed almost two decades ago. It does not require compaction to achieve good consolidation and is becoming more and more commonly used in many parts of the world. However, SCC is not the same as high-workability concrete; a SCC is a high-workability concrete, but a ...
Ng, IYT, Kwan, AKH
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Self-Consolidating Concrete Columns under Concentric Compression

ACI Structural Journal, 2008
The high flowability of self-consolidating concrete (SCC) is often achieved by reducing the amount of coarse aggregate and using more water. This can lower concrete strength. This study investigates the behavior of SCC columns under concentric compression by testing two series of column specimens.
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Modeling Static Segregation of Self-Consolidating Concrete

ACI Materials Journal, 2009
A numerical model was developed based on rheology and fluid dynamics to calculate paste-aggregate interface settling speed in an effort to help prevent self-consolidating concrete static segregation, which occurs when aggregate sinks in at-rest concrete. The model was found to be reasonably accurate in describing static segregation.
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Self-Consolidating Concrete

Research, Development and Practice in Structural Engineering and Construction, 2012
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Self-consolidating concrete

2016
A. Yahia, P.-C. Aïtcin
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Ultra light-weight self consolidating concrete

2009
M Hubertova, R Hela
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