Difference between revisions of "Category:570 Portland Cement Concrete Pavement Maintenance"

From Engineering_Policy_Guide
Jump to navigation Jump to search
m (Updated link to 570.5)
m (added link anchor)
 
(One intermediate revision by one other user not shown)
Line 22: Line 22:
  
 
4. Repair of sunken slabs by patching or [[570.5 Mudjacking (Slab Jacking) by MoDOT Maintenance|mudjacking]].
 
4. Repair of sunken slabs by patching or [[570.5 Mudjacking (Slab Jacking) by MoDOT Maintenance|mudjacking]].
 
+
<div id="5. Preventive maintenance"></div>
 
5. Preventive maintenance by [[570.2 Joint and Crack Maintenance|sealing joints and cracks]].
 
5. Preventive maintenance by [[570.2 Joint and Crack Maintenance|sealing joints and cracks]].
  
6. Preventive maintenance by maintenance of [[:Category:605 Underdrainage|drainage facilities]] to adequately drain the base and subbase and by [[:Category:625 Undersealing Pavement|undersealing]].
+
6. Preventive maintenance by maintenance of [[:Category:605 Underdrainage|drainage facilities]] to adequately drain the base and subbase and by [[:Category:625 Slab Stabilization|slab stabilization]].
  
 
7. Preparatory maintenance [[570.6 Preparation of Portland Cement Concrete Surfaces Prior to Resurfacing|prior to resurfacing with asphaltic concrete]] upper decks.
 
7. Preparatory maintenance [[570.6 Preparation of Portland Cement Concrete Surfaces Prior to Resurfacing|prior to resurfacing with asphaltic concrete]] upper decks.
  
 
To supplement the articles and maintenance planning guidelines in this category there is also a Maintenance Planning Guideline for [[:Category:622 Pavement and Bridge Surface Removal and Texturing#622.1.2 Maintenance Planning Guideline for Coldmilling High Joints|Milling High Joints]] available.
 
To supplement the articles and maintenance planning guidelines in this category there is also a Maintenance Planning Guideline for [[:Category:622 Pavement and Bridge Surface Removal and Texturing#622.1.2 Maintenance Planning Guideline for Coldmilling High Joints|Milling High Joints]] available.

Latest revision as of 14:29, 2 December 2010

Concrete pavements that have been built over the years vary in design, width, thickness, type of joint, kind of material and in other ways. It is not practical to discuss the maintenance of each type separately. The following applies to concrete surfaces in general.

To remain in good condition, a concrete slab must have strong uniform support from the soil or other materials beneath the pavement and the surface kept as smooth as possible in order to reduce the destructive effect of impact. Once the support is taken away by settlement or by the scouring effect of water action or is weakened by saturation, prompt action must be taken to remedy the situation, otherwise the slab will crack and breakup.

Concrete for maintenance repair and replacement must be received from a calibrated ready mix plant. The Materials Division shall provide a list of ready mix plants for district use that are calibrated. Concrete from a non calibrated ready mix plant may only be used if there is no calibrated plant within a reasonable driving distance from the work site.

The most common failures of Portland cement concrete pavements are:

Cracked or broken slabs,
Spalled and buckled joints,
Scaled surfaces,
Sunken slabs, and
Faulted joints.

Maintenance will in general consist of the following:

1. Repair of surface failures.

2. Repair of complete slab failures by concrete replacement.

3. Repair of buckled pavement.

4. Repair of sunken slabs by patching or mudjacking.

5. Preventive maintenance by sealing joints and cracks.

6. Preventive maintenance by maintenance of drainage facilities to adequately drain the base and subbase and by slab stabilization.

7. Preparatory maintenance prior to resurfacing with asphaltic concrete upper decks.

To supplement the articles and maintenance planning guidelines in this category there is also a Maintenance Planning Guideline for Milling High Joints available.