Condition: The finished surface may exhibit color variations. These color variations may not be discernable until the next day. They will usually disappear as the...
Condition: Raveling occurs when particles of aggregate dislodge from the finished surface once opened to traffic. Figure 50 – Raveling Possible Cause: Prevention: Inspector’s Note: ...
Condition: Flushing occurs when the emulsified asphalt in the slurry surfacing system migrates to the surface, giving a slick, black appearance. (Bleeding of the existing...
Condition: Mix consistency is not uniform compared to the rest of the pull. Figure 52 – Lack of Surface Texture Uniformity Figure 53 – Lack...
Condition: The mixture breaks in the pugmill, spreader box or prior to completion of any necessary handwork. Possible Causes: Prevention: Ensure that the application...
Condition: The mixture breaks too slow, causing delays in opening to traffic Possible Causes: Prevention: Suspend operations if temperatures are not within the recommended application...
Condition: In areas where handwork was required, the finished slurry surfacing shows uneven application of material, non-uniform surface appearance (streaks and drag marks) and excessive...
Condition: Unsightly tire marks appear on a newly placed slurry surfacing. Figure 55 – Power Steering Marks Possible Causes: In its infancy, slurry surfacing may...
Condition: Excessively thick crack treatments may cause construction and performance issues for slurry surfacing. Figure 56 – Excessive Crack Sealant Application Possible Causes: Excessively thick...
Condition: The slurry surfacing system delaminates from the underlying pavement. Figure 57 – Delamination (not likely a bonding issue, more likely caused by water migration...
Condition: Discoloration caused by rainfall prior to curing of the slurry surfacing. Figure 58 – Appearance Immediately After Rainfall Figure 59 – Appearance Two Weeks...
Condition: The mixture breaks on the surface, trapping remaining moisture inside and extending the cure time. Possible Causes: This is not common, but may occur...
Condition: A false slurry occurs when the emulsified asphalt prematurely breaks on the fines portion of the aggregate during the mixing process. Because of this,...
Condition: In situations where application equipment must drive over freshly applied slurry surfacing (for example, cul-de-sacs or narrow roadways), tires may pick up material. Large...
Condition: Slurry surfacing is spilled or tracked onto concrete gutters and valleys. Figure 60 – Poor Workmanship Resulting in Slurry Surfacing on Gutter/Driveway Figure 61...
Condition: Transverse corrugations are present in the finished slurry surfacing material. Figure 63 – Washboarding Possible Causes: Fabric drag installed too high allowing for “bouncing”,...
Condition: The slurry surfacing mixture breaks too quickly causing material build-up in the spreader box. The resulting broken mixture will not bond to the pavement...
Condition: The finished surface has scratches, drag marks, tears, or other surface irregularities. Figure 64 – Excessive Drag Marks and Scratches Possible Causes: Prevention: Inspector’s...
Condition: Longitudinal joints are constructed with one, or more, of the following conditions: Figure 65 – Unacceptable Longitudinal Joint Possible Causes: Although pavement geometry may...
Condition: Figure 66 – Unacceptable Transverse Joint (Overworked) Possible Causes: Prevention: Inspector’s Note: Following construction, even well-constructed joints may exhibit some level of roughness, but...
Condition: The slurry surfacing edge lines do not appear uniform or are not properly aligned with the shoulders or curb lines. Figure 67 – Unacceptable...
Condition: Even though the rut filling project and materials were properly selected, the final rut filling application did not correct the depressions in the wheel...
Condition: Due to early release to traffic, damage has occurred on the slurry surfacing material such as: Figure 68 – Flushing Due to Premature Release...
Condition: Tire tracks are highly visible in the finished surface. Figure 69 – Damage from Early Traffic Possible Cause: Occasionally, a vehicle will drive across...
Condition: Areas where handwork was performed may be segregated, unsightly, have uncovered areas or a non-uniform texture. Figure 70 – Unacceptable Handwork Possible Causes: Prevention: ...