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Pavement Damage 17, Manholes and Inlet Cracks
Normal pavement movement due to frost heaving and temperature changes often cannot be accommodated in the pavement adjacent to a manhole or a storm sewer inlet. Cracks and faulting may develop and the concrete slab may deteriorate further. These are often localized defects that may not indicate a general pavement problem. Sealing and patching with [...]
Pavement Damage 16, Utility repairs– patches and potholes
Replacement or repair of utilities will require cuts or utility openings. When repaired these pavement patches may show settlement, joint deterioration, or distress under continued traffic loading. Patches from previous repairs may perform like original pavement or experience joint deterioration or settlement. Localized failures of materials or subgrade soil can cause individual potholes. Surface spalling [...]
Break From Concrete Damage
I was thinking about how many blogs we have about conrete damage types and how many there are still. When I’m done with the Paser Ratings Concrete Damage descriptions, I plan to write about asphalt damage. Although there are fewer types of asphalt damage, it still felt like time for a break. So, for a [...]
Pavement Damage 14, Faulting in Concrete
Joints and cracks may fault or develop a step between adjacent slabs. Faulting is caused by pumping of subgrade soils and creation of voids. Heavy truck or bus traffic can rapidly accelerate faulting. Longitudinal joints may fault due to settlement of an adjacent slab. Faulting creates a poor ride and may cause slab deterioration. Minor [...]
Pavement Damage 13, Blowups
Concrete slabs may push up or be crushed at a transverse joint. This is caused by expansion of the concrete that has caused breakdown and incompressible materials (sand, etc.) have infiltrated into poorly sealed joints. As a result, there is no space to accommodate expansion. It is more common in older pavements with long joint spacing. [...]
Pavement Damage 12, Meander Cracks in Concrete
Meander cracks Some pavement cracks will wander randomly. They can cross a slab diagonally or meander like a serpent, forking and turning. Meander cracks may be caused by settlement due to unstable subsoil or drainage problems, or by utility trench settlement. Frost heaves and spring thaw can also cause them. They are often local in [...]
Types of Pavement Damage 3
Concrete Damage Series, Part 3 Pop-outs Individual pieces of large aggregate may pop out of a concrete surface. This is often caused by chert (a rock similar to flint) or other absorbent aggregates that break down with freeze-thaw cycles. Surface patching can be done using FlexSet. If the pop out is very small, it can [...]
Types of Pavement Damage 2
Concrete Damage Series, part 2 Map cracking This is marked by a pattern of fine cracks, usually spaced within several inches. Map cracking usually develops into square or other geometrical patterns. It can be caused by an improper cure or overworking the surface during finishing. If map cracking is severe, cracks may spall or surface [...]
Crack Repair Tip
When repairing pavement with a slope, make sure there is a barrier (such as a piece of wood) to keep the FloMix (for asphalt cracks or other damage) or FlexSet ( for concrete cracks or breakdown) from flowing out of your repair. Remove the barrier before the material is set.
- The Stuff Repairs Are Made Of
- Importance of Communication
- Why Do We Have Leap Year?
- Dopey Soup, aka PolyFlex DS
- How to Fix Asphalt Water Damage
- Asphalt Damage, Part 7, Alligator Cracks
- Asphalt Damage, Part 6, Block Cracks
- Asphalt Damage, Part 5 and 6
- Roklin Opens New Manteresting Account
- Transverse Cracks in Asphalt
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