01555224

Component

https://doi.org/10.3141/2508-10

Self-consolidating concrete (SCC) exhibits very high workability; it easily fills the congested spaces between the reinforcement (both mild steel and prestressing steel) and formwork under the influence of its own mass without the use of any additional consolidation energy. A review of the use of SCC was conducted by the Virginia Department of Transportation in both cast-in-place and precast applications, such as repairs, pier cap placements, and beams with both normal weight and lightweight concretes. Both completed and ongoing studies indicate that SCC, whether in cast-in-place or precast applications, can be successfully used in bridge structures. The following practices should be followed. Care should be exercised with workability retention during the project to avoid consolidation issues; forms should be secured; concrete should be placed in forms in incremental heights to prevent bulging and failure; proper mix designs with fines should be ensured for flowability and stability; viscosity-modifying admixtures should be added for stability; and proper setting times for timely finishing operations should be established.

01588951

15-4057

English

pp 79–83

2015

Transportation Research Record: Journal of the Transportation Research Board

9780309369350

Print

Figures (5) ; Photos; References (15) ; Tables (3)

Bridges; Cast in place concrete; Mix design; Precast concrete pavements; Self compacting concrete; Setting (Concrete); Structural stability (Mathematics); Workability

Virginia Department of Transportation

Bridges and other structures; Design; Highways; Materials; Pavements; I24: Design of Bridges and Retaining Walls; I32: Concrete

PRP, TRIS, TRB, ATRI

Dec 30 2014 1:19PM

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• Pavement Concrete with Air-Cooled Blast Furnace Slag and Dolomite as Coarse Aggregates: Effects of Deicers and Freeze–Thaw Cycles