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CONCRETE ROADS FOR LOW TRAFFIC VOLUMES Brian Walker BCP Engineers
Advantages Of Concrete Roads Ideal for emerging contractors Low capital costs on plant Can be laid on very steep grades Little or no layerworks required Low maintenance costs
Ideal for emerging contractors
Low Capital Costs on Plant
Can be laid on very steep grades - - greater than 25%
Little or No Layerworks
Low maintenance costs
Some Problems With Concrete Roads Incorrect aspect ratios Irregular shaped panels Settlement of fills Late saw cutting of joints Plastic shrinkage cracks
Incorrect aspect ratio of panel - Must be less than 1.2
Irregular shaped panels
Settlement of Fills Late Saw Cutting of Joints
Plastic shrinkage cracking
Other Types Of Concrete Roads Rollcrete Interlocking concrete blocks
Interlocking Concrete Blocks
Some Concrete Road Projects
Cost Comparisons Asphalt/concrete S-BG2Premix25 Mpa Conc. Total AsphaltR25R28R21R0R74 Conc.R0 R87.50
Summary Lower maintenance costs Helping emerging contractors Low capital cost of plant Ideal for steep grades Can reduce the cost of drainage Reduced requirement for scarce layerwork material
How Not To Build A Road Inappropriate surfacing Combined with no maintenance
Concrete Test Section RPF 8 May Objectives Design details Material properties Instrumentation Traffic Construction Conclusion Outline.
Pavement Preservation in South Carolina J. C. “Clem” Watson, P.E. Chief Engineer for Operations South Carolina Department of Transportation.
Stone Mastic Asphalt Molly Nause-McCord. What is it? A type of road surfacing mix Mix made up of 70% coarse aggregate Nominal size of 10 mm or 14 mm –10mm.
Section Two Collapsing slopes. What is a landslide? soil layer rock layer wet soil Landslide takes place when large masses of loose rocks and soil move.
ARC313 Building Code II. Review What is the minimum bearing pressure allowed for soils to support foundations? 75 kPa How can you tell by looking at the.
Deterioration of Concrete Roads
PCC Overlays of HMA Pavements
PAVEMENT MAINTENANCE 1:
MICHIGAN EXPERIENCE WITH WARRANTY WORK. Warranty Program History Why Warranties ? Warranty Specifications Experience & Lessons Learned.
Jerry L. Larson IRMCA Indiana LTAP Basics of a Good Road
Univ of Wis - Platteville
Horticulture II - Landscape Unit C Landscape Installation and Maintenance.
Full-Depth Reclamation Using a Cement Slurry Spreader Attached to a Ready Mixed Concrete Truck W. Spencer Guthrie, Ph.D., Associate Professor Charles A.
Choosing Landscape Construction Materials (Hardscape)
TOPIC OF THE DAY Flexible Pavement Distresses/Failure Of Structure.
SESSION 8 Shoulder Considerations. Objectives Identify shoulder/edge support types Describe benefits of each type Discuss how edge support conditions.
DESIGN FLEXIBLE AND RIGID PAVEMENTS Ms Ikmalzatul Abdullah.
Example 3: Determination of M r = 3/8. Example 4: Pavement Thickness Given M r = 10,000 psi (69 MPa) and ESAL = 10 6, design the thickness of a pavement.
Cross section elements consist of the following: 1.Traffic lanes (carriage ways); 2.Shoulders; 3.Medians; 4.Curbs; 5.Side slopes.
Unit 26. Sizes 7-5/8” high 15-5/8” long Common depths – 8”, 10”,12” 3/8” mortar joints Walls usually stand 7’-4”
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