Intelligent Compaction News

IC Presentation at Chinese Construction Equipment Conference

Prof. Guanghui Xu, an IICTG Executive Committee member, will make an intelligent compaction presentation at the Chinese Construction Equipment conference in Xu Zhou, China, on October 23, 2017. This conference is organized by the Pavement and Compaction Machines subcommittee of the Chinese Association of Construction Equipment Industry.

Prof. Xu’s presentation topic will be “Development of Intelligent Compaction Equipment to Improve Construction Quality “.

IICTG 2017 – A Huge Success

The International Intelligent Construction Technologies Group (IICTG) 2017 conference is a huge success! Thanks to all attendees, speakers, sponsors, and exhibitors… and esp. the IICTG 2017 planning committee! The great presentations will be posted in the next few days on a “IICTG member-only” webpage. Find out how to be an IICTG member here!

Here is the group picture! The original picture file is available on the 2017 conference webpage.

Veta 4.3.23 Released

This version fixes an issue that caused data filters that used a range (minimum and maximum) to not have an effect. This will change any results that used such a filter. Final coverage will be automatically be reprocessed to correct this.

Download Veta 4.3

Final coverage will be reprocessed.

Filters

  • Fix: Selecting a range of values for an item in a data filter had no effect. For example:
    100 F < Temperature < 200 F

Analysis

  • Fix: Changes to the sublots could cause the software to crash when navigating the analysis.

ICDM and Veta Workshop at IICTG 2017

An Intelligent Construction Data Management (ICDM) and Veta workshop will be conducted at the IICTG 2017 conference in Minneapolis, MN, on September 26. The workshop is open to all IICTG 2017 registrants. Veta 4.3 will be featured in this workshop with extensive hands-on exercises. The attendees will get a sneak preview of Veta 5.0 at the end of the workshop. Check out the agenda here!

Veta 4.3.21 Released

This version fixes several bugs affecting importing data files and filter usability. Release notes provided below.

Download Veta 4.3

Existing Volvo projects will be reprocessed.

Import

  • Fix: Some BOMAG files could be imported.
  • Fix: Files using UTM with feet or survey feet were not imported correctly. We will not force a reprocess for this because it the error could be seen on the map during import.
  • Fix: ICMV type was not detected for Volvo final coverage files.
  • Fix: ICMV type was not set to EDV for older Volvo all passes files.

Filters

  • Fix: Using filters could cause a crash.
  • Fix: Various issues with the ability to select filters. Same fixes that were applied to 4.2.37.

Analysis

  • Fix: Switching to the analysis after changing the selected sublots for the (Empty Group) could cause a crash.
Intelligent Compaction provides crews with continuous compaction control with real-time monitoring

FHWA, The Transtec Group Release Intelligent Compaction Guideline Documents

Adequate and uniform compaction of road materials, such as soils, aggregate bases, and asphalt pavement materials, is one of the most important requirements in roadway construction. It is indispensable to strive for high quality of compaction to ensure long-lasting performance. Intelligent Compaction (IC), which uses modern vibratory rollers equipped with an integrated measurement system, an onboard computer reporting system, Global Positioning System (GPS) based mapping, and optional feedback control, helps improve compaction quality control.

“Intelligent Compaction provides crews with continuous compaction control with real-time monitoring,” said Dr. George Chang, Director of Research at The Transtec Group. “IC can help the roller operator better control and achieve the coverage for compaction, which is very difficult to do without guidance.”

Now that construction season is well underway in the United States, the Federal Highway Administration (FHWA) and pavement engineering firm The Transtec Group published two intelligent compaction technical briefs to help construction teams and organizations effectively and efficiently implement IC.

Specification for Intelligent Compaction

The Specification for Intelligent Compaction Technical Brief (FHWA-HIF-17-037) provides a review of national and state IC specifications and recommendations for future enhancements. The FHWA and AASHTO have developed national IC guide specifications and an increasing number of state agencies have also developed their own IC specifications. There is a lot of variance, however, among the contents of state IC specifications.

“Without requiring IC in construction specifications, it is very difficult to make IC widespread,” said Dr. Chang. “The goal of the tech brief is to make complicated technical content more palatable to the public so they can digest the material in a short-form publication.”

Common elements of IC specifications include IC system requirements, a quality control plan, training, field operation requirements, data requirements and submission, and measures and payment. This tech brief provides guidance for state DOTs to customize those elements into their specification.

Color-Coded IC Maps

The Color-Coded IC Maps Technical Brief (FHWA-HIF-17-036) outlines guidelines and recommendations for color-coded maps using IC and paver-mounted thermal profiler (PMTP) data. These maps include items such as roller passes, asphalt surface temperatures, and stiffness values.

IC and PMTP systems have been gaining popularity across the US over the past decade to improve compaction quality and detect temperature segregation behind pavers. On IC and PMTP systems, color-coded maps from their onboard displays are used extensively for monitoring and visual inspection of collected field data and machine operation.

“Visual inspection in the field is one of the very first steps for quality and acceptance of construction, such as meeting required roller passes and coverage and minimum asphalt temperatures” said Dr. Chang. “Using a consistent color palette will make inspections consistent and the process robust.”

Veta Software

IC and PMTP systems gather a tremendous amount of complex geospatial data that poses challenges for data management, analysis, and reporting. These issues have become the main hurdles during implementation. To address the above issues, the Minnesota Department of Transportation, FHWA, and the Transportation Pooled Fund Study, TPF-5(334) have funded development of the Veta software tool for IC and PMTP data viewing and analysis.

Veta is a map-based software tool for viewing and analyzing geospatial data. Currently, Veta can import data from various IC machines and PMTP scanners to perform editing, filtering, spot test correlation, and statistical analysis as a post-processing tool.

One of the salient features of Veta is viewing IC and PMTP data as color-coded maps on top of geographical road or aerial maps to facilitate quantitative interpretation. Key examples are for evaluating consistency of rolling patterns and for identifying cold blobs or streaks of asphalt temperature segregation. Veta allows users to select any specific passes to be viewed, including the last pass or final coverage.

Veta is required in FHWA and AASHTO PP80-17 specifications, and is increasingly adopted by state highway agencies.

The Transtec Group developed Veta with support from the FHWA. Veta is free to download. Currently, the Transportation Pooled Fund (TPF) study, “TPF-5(334) Enhancement to the Intelligent Construction Data Management System (Veta) and Implementation” is leading the effort for enhancing and maintaining Veta to facilitate the national IC/PMTP implementation.

Veta 4.2.38 Released

Some of the changes from 4.3 have passed down to 4.2, as that is what most people are using right now. The cold-edge and bracker filter has been revised, as described below. However, this revision does require existing thermal profiling projects to be reprocessed upon open. As always we advise working with a copy of your project file.

Download Veta 4.2

Existing thermal profiling projects will be reprocessed.

Filters

  • Change: The cold-edge filter has been revised again. The revision in 4.2.36 (June 2017), allowed the filter to work with projects containing files containing different numbers of sensors, but yielded less desirable results than previous versions. The filter now gives the same results as the previous versions.
  • Fix: Sometimes the Specific Date input was disabled.

Sublots

  • Fixed: Displayed coordinates and units sometimes did not match the project coordinate system and the distance unit in the Options.

Analysis

  • Fixed: The sublots length for the applied filter group did not update when the sublots were created.

Veta 4.3.18 Released

The quest for perfection continues. More fixes for the coordinate and unit information shown on-screen.

Download Veta 4.3

Misc

  • Fixed: Displayed coordinates and units sometimes did not match the project coordinate system and the distance unit in the Options.

 

Veta 4.3.17 Released

Despite extensive testing, some bugs slipped through in the last release, mainly with regards to unit conversion. The cold-edge and bracker filter has also been revised, as described below. However, this revision does require existing thermal profiling projects to be reprocessed upon open. As always we advise working with a copy of your project file.

Download Veta 4.3

Import

  • Fixed: Some files could not be imported.

Map

  • Change: Search tool minimum radius changed to 1 ft (0.3 m). Default value changed to the same.

Filters

  • Change: The cold-edge filter has been revised again. The revision in 4.2.36 (June 2017), allowed the filter to work with projects containing files containing different numbers of sensors, but yielded less desirable results than previous versions. The filter now gives the same results as the previous versions.
  • Fix: Sometimes the Specific Date input was disabled.

Sublots

  • Fixed: Displayed coordinates and units sometimes did not match the project coordinate system and the distance unit in the Options.

Analysis

  • Fixed: The sublots length for the applied filter group did not update when the sublots were created.

Misc

  • Fix: Various unit conversion issues.

 

Veta 4.3 Released

We are pleased to announce the release of Veta 4.3! All changes are listed in the Release Notes and also provided below.

Download Veta 4.3

Import

  • New: Added support for Volvo soils files.
  • New: Added support for the Oregon Coordinate Reference System

Map

  • New: Search tool to list all data near a selected location.

Analysis

  • Fixed: A given location in the thermal profile would be colored differently depending on the x-axis starting value.
  • New: The semivariogram for thermal profiling has been replaced with a “transverse semivariogram”. The standard semivariogram did not always work well for thermal profiling data, especially when there is large temperature segregation.
  • New: Added a legend for the thermal profile.

Reports

  • New: Added option to choose if sublots should be reported. If not, only the summary will be reported, which can drastically reduce the size and time needed to create reports.
  • Change: File export has been simplified to only export using the selected coodinate system.

Misc

  • Change: Many performance improvements.
  • Change: Location information now lists Northing/Latitude first, followed by Easting/Longitude.
  • Change: Added support for very large projects.