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Federal Highway Administration Research and Technology
Coordinating, Developing, and Delivering Highway Transportation Innovations
| TECHBRIEF |
| This techbrief is an archived publication and may contain dated technical, contact, and link information |
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| Publication Number: FHWA-HRT-16-017 Date: October 2015 |
Publication Number: FHWA-HRT-16-017 Date: October 2015 |
Table 4. State DOT ACM usage survey results.
| MATERIAL | STATE USAGE | APPLICATIONS | ANECDOTAL MATERIAL OBSERVATIONS |
| CSA | California Kentucky Maine Missouri New Mexico New York North Carolina Texas Virginia Washington |
Patching Rapid set overlays Closure pour application with precast deck panels Bridge joint repairs Partial depth concrete pavement repairs Short-term replacement for bridge departures/ entrances Bridge sleeper slab replacements Precast deck slab closures LMC overlays Peer cap to deck slab connections Panel replacements and DBR pour back material |
"Performed well." "Performed well in construction and service." "Performed well so far with no issues." "Good field performance, one large transverse crack but no debonding." "Worked very well for more than 5 years, even with a profoundly under-designed and very thin pavement." "Excellent performance-fewer cracks and lower permeability than concrete overlays." "Good when mixed, placed, and cured properly." "Field tests show good performance, after one year, from CSA pavements." |
| CSA-latex mixtures | Missouri | Rapid set bridge deck overlays Partial depth repairs |
"Some scaling issues, discoloration, and reduction in compressive strength." |
| CAC | Illinois Maryland New York Texas |
Roadway patching
Precast deck slabs |
"Material has held up well, but experienced and well-organized contractors with topnotch placement equipment are absolutely necessary in order to obtain good results." "Performed well for many years after placement." "One product showed scaling the first year and performed well for the next 17 years, others have had very poor durability with lots of scaling and freeze-thaw loss." "Have had good experiences with CAC." |
| MPC | Alaska Maryland Virginia |
Bridge deck patching and overlays Precast panel joints |
"14 years after placement, some joints have slightly delaminated and cracking has occurred where the material was subjected to torsion, but overall the material seems to have worked reasonably well." "CSAs preferred because of cost." |
| AA | Georgia Kentucky Texas Virginia |
Full- and partial-depth concrete slab pavements and bridge decks, and repairs to pavements and bridge decks Patching |
"Getting a level finish in the short set window was challenging, but otherwise the material performed well." "Performed well in construction and service." "Had low strength issues, but activator may have "Field tests show good performance, after 1 year, |
| Polyester Cement | California | Bridge overlays | "Doing well so far after 1 year of placement." |
The research team examined full-depth chemically-activated binder concrete slabs, originally placed on U.S. Interstate 16 in Dublin, GA. Images from the site are shown below in figures 2 and 3. These slabs were originally placed in early 2008 and remained in service until 2013, when a full highway section replacement was completed. Since then, the slabs have been stored at a Georgia DOT storage yard.
The research team observed that the slabs appeared to be in excellent condition, with only very minimal cracking. This cracking was likely caused by removing the slab from the roadway and transporting it via a front-end loader from the original site to a Georgia DOT storage area. The slab surface showed exposed aggregates; however, this was assumed to be a result of the paving process, and perhaps grinding of the surface to smooth it and improve rideability, rather than a durability issue, as no evidence indicated salt scaling or delamination.
© The Georgia Institute of Technology
Figure 2. The wearing surface of the I-16 slab section in Dublin, GA, and one of the few cracks present.
(It is not known if the crack was present before slab removal.)
© The Georgia Institute of Technology
Figure 3. Cast surface of the slab section in Dublin, GA.
