High-Performance Plain and Fibrous Latex-Modified and Microsilica Concrete Overlays
- 1 December 2008
- journal article
- Published by American Society of Civil Engineers (ASCE) in Journal of Materials in Civil Engineering
- Vol. 20 (12), 742-753
- https://doi.org/10.1061/(asce)0899-1561(2008)20:12(742)
Abstract
An extensive laboratory experimental program was conducted to develop high-performance fibrous latex-modified concrete (LMC) and microsilica concrete (MSC) overlay mixtures based on target performance characteristics. The designed LMC and MSC overlay normal weight mixtures have the desired workability, and greater than 41 and , respectively, drying shrinkage less than at , low permeability, and adequate hardened air-void parameters. In comparison, the LMC showed lower shrinkage and permeability values than the MSC. The fibrous LMC and MSC mixtures experienced toughness indices values in the range of 8.78–16.42 and had lower shrinkage values than identical mixtures without fibers. In addition, the values of residual strength factors reflect the same fact that synthetic and steel fibers were very effective in recovering the load in postcracking range. The entire overlay types showed high bond strengths as a result of the excellent surface preparation using water-jet blasting. The careful implementation of the right procedures of mixing, placing, finishing, and curing significantly assisted in producing crack-free overlay applications with high bond strengths.
Keywords
This publication has 2 references indexed in Scilit:
- Low-Cycle Fatigue Testing of High-Performance Concrete Bonded Overlay–Bridge Deck Slab SystemsJournal of Bridge Engineering, 2007
- Mechanical Properties and Durability of Bonded-Concrete Overlays and Ultrathin Whitetopping ConcreteTransportation Research Record: Journal of the Transportation Research Board, 2003