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Road construction project
Road construction project
Road construction project
Road construction project
Road construction project
Road construction project
Road construction project
Road construction project
Road construction project
Road construction project
Road construction project
Road construction project
Road construction project
Road construction project
Road construction project
Road construction project
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Road construction project

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The project includes the construction of civil works, demarcation and signaling of Woodland Grove Drive at city of Regina

The project includes the construction of civil works, demarcation and signaling of Woodland Grove Drive at city of Regina

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  • 1. Concordia University Construction Process Woodland Grove Drive city of Regina AmirsamanAsem, Ayad Mohammad, Asadeq Zaid, Mohamed Fared Zuhri Yafi, 4-April-2013
  • 2. Outline Road Construction Processes Site description Mobilization Pavement Compaction Productivity Calculation Conclusion 2
  • 3. Road Construction Processes • • • • • • Loading hot mix asphalt to the truck Hauling asphalt to job site Dumping the asphalt to the spreader Spreader paving the asphalt Roller breaking down the asphalt Roller finishing the surface 3
  • 4. Site description The project includes the construction of civil works, demarcation and signaling of an of Woodland Grove Drive at city of Regina. • Location :Woodland Grove Drive from Arcola Avenue to Woodhams Drive. • Estimated Value: $1,750,000.00. • Start Date: Early May, 2012. • End Date: Early September, 2012. • Total pavement length 10km. 4
  • 5. Mobilization Take all necessary preparation steps to start the work by: 1. Taking approvals from authorities. 2. Develop management plan for traffic flow during construction of civil works, 3. Providing of barricades, signs, cones, and flaggers to do all the necessary safety precautions. Leveling And Layout: Use of different types of leveling instrument to determine the reference points and the required level. 5
  • 6. Pavement Prime coat is the first applied layer used to protect and stabilize the surface of the base. Use of liquid asphalt of the following types: RC-70, RC-250, MC-30, MC-70, MC-250, SC-70, upon to requirements of (ASTM-D2027). • The maximum amount to be applied between 0.9 and 2.3 l/m2 • The temperature of the asphalt concrete leaving the plant should not be less than 135°C nor more than 163°C BOMAG GmbH, Fayat Group (2009) 6
  • 7. Compaction 1. Adequate compaction of asphalt is essential to ensure the mix design performance expected service life and required density is achieved. 2. The main factors influencing the successful compaction of asphalt are:  Rolling procedures and techniques.  Temperature of the mix.  Mix properties.  Soundness and stiffness of the underlying base.  Type and numbers of rollers or other compaction equipment 7
  • 8. Compaction The compaction process should follow the following order: 1. Transversal joints. 2. Longitudinal joints. 3. Outer edge. 4. Initial compaction of the strip. 5. Middle compaction of the strip. 6. Final compaction of the strip BOMAG GmbH, Fayat Group (2009) 8
  • 9. Compaction Capacity Factors that can affect the efficiency and productivity of a compactor: 1. Drum width 2. Number of passes 3. Roller speed. 4. Time elapsed since fresh asphalt was placed 5. Non-productive work time frames (i.e, breaks, vehicle maintenance) 9
  • 10. Productivity Calculation 10
  • 11. Productivity Calculation • • • • The pavement area has divided to three sections , 50m length each. The width of the compactor is approximately 2 meters. Each strip was compacted 3 times. The speed of the compactor was calculated as it follows Speed = Distance / Time Compaction ( section 2&3) in tandem formation 203 sec Compaction (section 1) manual 57 sec Finishing & smoothing compaction 182 sec 11
  • 12. Productivity Calculation 12
  • 13. Productivity Calculation Theoretically The volume to be compacted in sections 2 & 3 is 6.35 m3 (2.0 x 50 x 0.0635 ). The following is a table of measured fixed times during the compaction. Operation Time Fixed Time (Variable Time) (sec) (sec) Compaction ( section 2&3) in tandem formation 203 103 Compaction (section 1) manual 57 38 Finishing + smoothing compaction 182 51 13
  • 14. Productivity Calculation Fixed Time Moving the unit into position, Loading, maneuver and dump time. Cycle time = Fixed time +Variable time = 203+103=306 Sec =0.085hr Production (section 2&3) = Volume/hour = 6.35 m3 / 0.085 hr = 75 m3/hr % Error = (Experimental [Observed] – Theoretical) / Theoretical x 100 % Error = (81-75)/75 x100 = 8 % 14
  • 15. Conclusion • Discrepancies in values between the theoretical and actual observed production rate is mainly due to data collection difficulties. • As the procedure of compacting was unclear and seemed at first glance that it was randomly performed, many spot time and maneuver times were not precisely measured. 15
  • 16. 16

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