wisdot bureau of technical sevices spring 2014 qmp training base compaction spv’s and project...
Post on 29-Dec-2015
218 Views
Preview:
TRANSCRIPT
WisDOT Bureau of Technical SevicesSpring 2014 QMP Training
Base Compaction SPV’s
and Project Design
Guidance
How’d We Get Here?
3
2013 pilot projects IH-43 Ozaukee Co. USH 63 St. Croix Co. (x2) STH 179 Crawford Co. STH 29 Brown Co. STH 153 Marathon Co.
Spec revisions 1 ¼ – Inch BAD Mill/Pulverize and Relay
STH 47 Vilas Co. USH 51 Lincoln Co. STH 73 Wood Co. STH 29 Marathon Co. Fishel Road Forest Co.
HMA surfaced mainline AND QMP Subgrade and/or Subgrade improvement AND 30,000 tons+
Between 2010 and 2013 17% of all let projects 31% of HMA projects 54% of HMA projects with 1-1/4” base agg.
4
Project Selection – Base Agg. Dense
Minimum Mill and Relay or Pulverize and Relay Quantity of 40,000 SY
Between 2010 and 2013 3% of all let projects 43% of pulverize and relay projects 56% of mill and relay
5
Project Selection - Mill/Pulv. & Relay
QC plan IA requirementsPersonnel requirements93% of target densityTest frequency“Failing” test/corrective
actionMeasurement and
payment
6
Special Provision – Highlights
Organizational chart Communication process Source locations list (1 ¼” spec only) Stockpiling and hauling methods (1 ¼” spec only) Process control problem resolution process QC lab, sample, and documentation storage
locations Estimate of locations and calculated quantities to
be tested under this provision.
QC Plan Requirements
7
Personnel HTCP Nuclear Density Technician I Or ACT certified technician
IA According to the Department’s independent assurance
program
Misc Requirements
8
1 ¼ - Inch Base Aggregate Dense ≤20% Recycled Material
Modified Proctor Max Dry >20% Recycled Material
Mod. Proctor Max Wet Mod. Proctor Max Dry Control Strip
Mill/Pulverize and Relay Control Strip
Target Density Determination
9
1 ¼ - Inch Base Aggregate Dense Density – 1 per 1500 tons Gradation – 1 per 3000 tons Proctor – initial and then if trigger met
Mill/Pulverize and Relay Density – 1 per 3000 tons Proctor – initial and then if trigger met
CA – Optional Information Process control decisions Troubleshooting Limiting liability and/or corrective
action limits
Test Frequency – QC/CA
10
1 ¼ - Inch Base Aggregate Dense Gradation change > 10.0% Source change Recycle material blend change > 10.0% Density > 103% on two consecutive measurements If using control strips; thickness change > 2.0 inches
Mill/Pulverize and Relay Layer thickness change > 2.0 inches Density > 105% or <90.0%; AND outside of range of 10
avg control strip shots; on three consecutive measurements
QC/CA – Proctor Triggers
11
Density and gradations 30% of Contractor Frequency
Target densities; Same triggers as QC Control Strips
QV person must be present and verify sufficient compactive effort (including addition of water)
Will use same value as contractor
QV Frequencies
12
IA Highlights
13
Evaluate QV and QC sampling and testing
May include one or more of the following: Split sample testing Proficiency sample testing Witnessing sampling and testing Test equipment calibration checks Additional sampling and testing
<93.0%
Opt. Moisture
Deflection
<2.0 lb/ft3
No Deflection
<2.0 lb/ft3
Non-Opt. Moisture
Continue Compaction New %
Corrective Action
14
Facilities Development Manual guidance – March 2014 Project selection guidance Water bid item
10 – 20 gallons per ton 1 ¼ - Inch BAD 3 – 6 gallons per SY Mill/Pulverize and Relay
Revisions – Fall 2014
Conversion to STSP – Spring 2015
16
Still To Come
QuestionsNow or On Projects
jed.peters@dot.wi.govor
(608)220-0690
17
ftp://ftp.dot.wi.gov/dtsd/bts/pavement/Base_Comp_Docs
top related