Erik Updyke & Imelda Diaz: Bonded Wearing Course
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Transcript of Erik Updyke & Imelda Diaz: Bonded Wearing Course
California Asphalt Pavement Association
Spring Asphalt Pavement Conference
April 16, 2015
Erik Updyke, P.E. & Imelda Diaz, P.E.
Los Angeles County Department of Public Works
Pavements were structurally sound.
Pavements were in fair condition (PCI=70s).
Distresses were slight to moderate in severity, occurring intermittently, not extensive, no or slight rutting.
Good skid resistance.
Quick return to traffic desired due to limited access and high traffic volumes.
High production/placement rate.
Reduce work zone exposure time to enhance worker safety due to high traffic speeds.
KANAN ROAD – MULHOLLAND HWY TO 1,296’ N/o SILVER CREEK ROAD ( 5.0 MILES)
KANAN DUME ROAD – 4,360’ N/o CAVALLERI ROAD TO TUNNEL # 1 (2.8 MILES)
KANAN ROAD AND KANAN DUME ROAD
SCOPE: COLD MILL ¾” FULL- WIDTH AND RESURFACE WITH BWC
KANAN ROAD AND KANAN DUME ROAD
▶ Rural Major Road▶ Length: Approximately 5.0 miles▶ Width: 36 to 60 feet
▶ Pavement Condition Index (PCI): 70-80▶ Predominant Distress: Moderate longitudinal and transverse
cracking (30%), moderate alligator cracking (10%)▶ Existing Structural Section: 4.5 to 7 inches of AC on native soil▶ 10-Year TI: 7.5▶ Placement Date: April, 2010
▶ FWD Testing (CA Test 356) Data: Mean Deflection: 12 mils 80% Deflection: 16.2 mils Tolerable Deflection at Surface: 21 mils Since 80% Deflection < Tolerable Deflection, road was structurally
adequate
KANAN ROAD (AFTER COLD MILLING)
KANAN ROAD (PLACEMENT)
KANAN ROAD (MAT)
▶ Rural Major Road▶ Length: Approximately 2.8 miles▶ Width: 26 to 60 feet
▶ Average Pavement Condition Index (PCI): 71▶ Predominant Distress: Moderate longitudinal and transverse cracking
(30%), localized alligator cracking (<10%)▶ Existing Structural Section: 5 to 8 inches of AC on native soil▶ 10-Year TI: 8▶ Placement Date: April, 2010
▶ FWD Testing (CA Test 356) Data: Mean Deflection: 9.83 mils 80% Deflection: 12.72 mils Tolerable Deflection at Surface: 20 mils Since 80% Deflection < Tolerable Deflection, road was structurally
adequate
MM 11.00, S/B LANES
KANAN DUME RD (BEFORE)
KANAN DUME ROAD (AFTER)
GALE AVENUE - NINTH AVENUE TO TURNBULL CANYON ROAD ( 0.27 MILES)STIMSON AVENUE -300’ S/o SHADYBEND DRIVE TO COLIMA ROAD (1.81 MILES) HALLIBURTON ROAD - HACIENDA BOULEVARD TO COLIMA ROAD (1.50 MILES)
COLIMA ROAD, ET AL
SCOPE: COLD MILL ¾” FULL- WIDTH AND RESURFACE WITH BWC
COLIMA ROAD, ET AL
▶ Length: Approximately 1.9 miles▶ Width: Ranges from 60 to 64 feet
▶ Average Pavement Condition Index (PCI): 79▶ Predominant Distress: Slight to moderate map cracking▶ Existing Structural Section: 7 inches of AC on 17 inches of CMB▶ 10-Year TI: 8.5▶ Placement Date: May, 2010
▶ FWD Testing (CA Test 356) Data: Mean Deflection: 15.63 mils 80% Deflection: 17.95 mils Tolerable Deflection at Surface: 13 mils AC Overlay Required: 1.33 inches
STIMSON AVENUEColima Road to Gale Avenue
STIMSON AVENUE
STIMSON AVENUE AT SIGMAN STREET (AFTER COLD MILLING)
STIMSON AVENUE AT SIGMAN STREET (AFTER RESURFACING)
▶ Length: Approximately 1.4 miles▶ Width: Ranges from 80 to 84 feet
▶ Average Pavement Condition Index (PCI): 68▶ Predominant Distress: Slight alligator cracking (10%), slight
longitudinal cracking (30%), and slight transverse cracking (10%)▶ Existing Structural Section: 4 inches of AC on 14 inches of CMB▶ 10-Year TI: 10
▶ FWD Testing (CA Test 356) Data: Mean Deflection: 12.8 mils 80% Deflection: 20.3 mils Tolerable Deflection at Surface: 15.5 mils AC Overlay Required: 1.02 inches
HALLIBURTON ROAD650’ E/o Pontenova Avenue to Colima Road
700’ W/o COLIMA ROAD
HALLIBURTON ROAD
HALLIBURTON ROAD (AFTER COLD MILLING)
HALLIBURTON ROAD (AFTER RESURFACING)
$125 to $150/ton (8/09 to 2/10)
Pre-paving meetings are very valuable. Require in your special provisions.
Roadway geometrics affect placement. Require submittal of a “pull-plan.”
Perform prep work in advance of contract.
Schedule during favorable weather. Thin lifts cool fast.
Importance of plant inspection.
Machine-placement only. Use other mixes for hand work areas.
Micro-mill (vs. cold mill) existing pavement.
Ensure the quantity is large enough to be economical.
Very smooth ride quality.