Divison of Construction

Intelligent Compaction

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Intelligent Compaction

Compaction is one of the most important processes in roadway construction. Pavement materials must be compacted to optimum densities to ensure adequate support, stability, and strength—achieving these densities uniformly is the key to long lasting roadway performance.  Current procedures using conventional compaction equipment and spot location density testing may result in inadequate and/or non-uniform material densities.  Inadequate compaction is one of the major factors in premature pavement failure.

Intelligent Compaction in California

Intelligent Compaction (IC) was included in the list of FHWA 2013-2014 Every Day Count initiatives (EDC-2).  The first demonstration project in California was conducted on I-80 eastbound lanes in Solano, CA in 2013. The results and findings of this demonstration has been published as part of FHWA research project "Intelligent Compaction: Quality Assurance for In-Place Density Acceptance".  In 2014, Caltrans developed two IC non-standard specifications for use in construction of hot mix asphalt (HMA) and Cold In Place Recycling (CIR) along a design guidance to assist Caltrans designers in adapting IC specification according to project specifics.  Currently the use of IC in construction of CIR is mandatory.  The use of IC in construction of the thin lift HMA overlay of CIR is mandatory while in other cases is highly recommended.  In California, IC is considered as a quality control tool.  The contractor is responsible for every aspects of IC including equipment, data collection and analysis, and reporting.

Since 2014, Caltrans has awarded over 10.5 million dollars of IC contracts in over 35 pilot projects.  It is anticipated that IC be fully integrated in construction of roadways by April 2018.  You can find a list of past and current Caltrans Intelligent Compaction projects here:

List of Caltrans IC projects

Intelligent Compaction in Construction of Hot Mix Asphalt

Intelligent compaction rollers are used in compaction of hot mix asphalt for breakdown and intermediate compaction for method compaction process and for density required HMA.  Continue reading

Intelligent Compaction in Construction of Cold In-Place Recycling

Cold In-Place Recycling (CIR) is an on-grade method of pavement rehabilitation that consists of milling the existing asphalt concrete pavement to a depth between 2 to 4 inches; mixing.  Continue reading..

Caltrans Intelligent Compaction Non Standard SSP

You can access the latest Intelligent Compaction specifications below:

Non-Standard Special Provision IC-CIR
2010 Non-Standard Special Provision IC-HMA
2015 Non-Standard Special Provision IC-HMA

Caltrans Intelligent Compaction Forms

Use the following forms with projects dated prior to July 1, 2016

Use the following forms with projects dated after July 1, 2016

INTELLIGENT COMPACTION GUIDELINES FOR CONTRACTORS

Caltrans Intelligent Compaction Essentials

Hot Mix ASPHALT (HMA)

Test Strip

Use the following intelligent compaction test strip procedure to establish HMA intelligent compaction target values:

Intelligent Compaction Hot Mix Asphalt Test Strip Procedure

The following is a sample test strip report that meets the requirements of the intelligent compaction HMA specifications:

Sample Intelligent Compaction Hot Mix Asphalt Test Strip Report

 

Compaction Quality Control Report

The following is a sample of compaction quality control report that meets the requirements of the intelligent compaction HMA specifications:

Sample Intelligent Compaction Hot Mix Asphalt Compaction Quality Control Report

 

COLD-IN-PLACE RECYCLING (CIR)

Mapping

The following is a sample of mapping report that meets the requirements of the intelligent compaction CIR specifications:

Sample Intelligent Compaction Cold-In-Place Recycling Mapping Report

 

Test Strip

Use the following intelligent compaction test strip procedure to establish CIR intelligent compaction target values:

Intelligent Compaction Cold-In-Place Recycling Test Strip Procedure

 

The following is a sample test strip report that meets the requirements of the intelligent compaction CIR specifications:

Sample Intelligent Compaction Cold-In-Place Recycling Test Strip Report

 

Compaction Quality Control Report

The following is a sample compaction quality control report that meets the requirements of the intelligent compaction CIR specifications:

Sample Intelligent Compaction Cold-In-Place Recycling Compaction Quality Control Report

 

Intelligent Compaction GuidANCE

Guidance documents are intended for use by Caltrans engineers.

Intelligent Compaction Design Guidance

Use the following design guidance to determine if intelligent compact can be used on a project and to assist in editing the specifications:

Intelligent Compaction Design Guidance

 

Intelligent Compaction Construction Guidance
Use the following construction guidance to administer Caltrans intelligent compaction specifications:

Intelligent Compaction Construction Guidance


TRAINING

Caltrans specification requires that all Intelligent Compaction Technicians (ICT) must be in possession of a valid certification of completion of an approved Caltrans training program.  The ICT training consists of the followings;

  1. Intelligent Compaction Data Analysis
  2. Intelligent Compaction Equipment

Intelligent compaction quality control compaction technician must complete both trainings.

The individuals attending the trainings will receive certificate of completion of training.  The certificate is not intended as a proof of proficiency.  The contractor is ultimately responsible for quality of workmanship and accuracy of analysis according to Caltrans intelligent compaction specifications.

List of Caltrans Approved Intelligent Compaction Training Programs

List of Intelligent Compaction Data Analysis Training Certification Holders

List of Intelligent Compaction Equipment Training Certification Holders


 

Intelligent Compaction Data Analysis Training March 2017 Recordings



Frequently Asked Questions

Your may find answers to your questions here:

Frequently Asked Questions

Useful Intelligent Compaction related links

www.intelligentcompaction.com – Official Intelligent Compaction/VETA website maintained by Transtec Inc.
www.trimble.com/gps_tutorial/ - GPS tutorial maintained by Trimble.
www.intelligentcompaction.com/downloads/field_demo/OHIC-6-Topcon.pdf - IC field demo project maintained by Topcon Inc.
https://www.youtube.com/watch?v=6ZIcBx21Txs  Intelligent Compaction 101

     

Contact:  Ebi Fini   ebi_fini@dot.ca.gov 916-227-5396