Intelligent Compaction News

Veta 5 includes direct data download from the Cloud.

Veta 5 Now Available: Enhance IC and PMTP Data Analysis

Veta is a free map-based software tool for contractors and highway officials to standardize, display, analyze, and report data collected by intelligent compaction (IC) and paver‐mounted thermal profiling (PMTP) technologies during construction. 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.

Veta 5 is the newest, powerful upgrade to the free Veta software.

Download Veta 5 for Free

New features include:

  • Better, faster, and more efficient data imports, including direct downloads from the cloud and a redesigned data import wizard to better handle data from various machines.
  • Redesigned and more powerful filters to handle any type of data extraction.
  • A filter group generator that can produce filter groups based on AASHTO PP81 naming conventions.
  • New features for more flexible data analysis options.
  • A new temperature segregation index (TSI) and new TSI analysis outputs.
  • Versatile PDF reports, including options to choose which items to report and the ability to add a logo and signature line.
  • Performance improvements to better handle huge project files.

View the 5.0 Release Notes to see all the new features and changes.

The new Temperature Segregation Index (TSI) is a composite index with conventional standard deviation and transverse semi-variogram.

The new Temperature Segregation Index (TSI) is a composite index with conventional standard deviation and transverse semi-variogram.

With greater control over construction data, users can perform more detailed analyses and create reports that can help agencies determine contractor pay factors. Construction teams implementing Veta 5 can expect to perform these complex tasks smoothly.

Download Veta 5 for Free

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 Transtec Group, the Minnesota Department of Transportation, the Federal Highway Administration (FHWA), and the Transportation Pooled Fund Study, TPF-5(334) aided in the development of Veta.

Veta is required in FHWA and AASHTO PP80-17 and PP81-17 specifications and is increasingly adopted by state highway agencies.

Future of Construction at Rocky Mountain Conference

The 2018 Rocky Mountain Asphalt Conference will feature a session on “Future of Construction” on February 22, in Denver, CO. It will include: Intelligent Compaction by Dr. George K. Chang, Transtec Group (President of IICTG, www.IICTG.org); Paver-Mounted Thermal Profiling by Paul Angerhofer of MOBA (Technical Committee member of IICTG), and GPR-based Asphalt Density Measurement by Kyle Hoegh of MnDOT. Please check it out!

Veta 4.3.28 Released

This version fixes an issue with the Transverse Semivariogram used in the thermal profiling analysis.

Download Veta 4.3

Analysis – Transverse Semivariogram

  • Change: The standard deviation uses a different algorithm and now matches the value in the distribution table.
  • Change: The default TSI specification has been changed. Moderate is now 30 and Severe is 70.
  • Fix: The wrong temperature data was used for each sublot.

Intelligent Compaction Workshop at TRB 2018

There will be an Intelligent Compaction Workshop at TRB 2018, from 9:00 AM to noon, US EST, on Sunday, January 7 at Room 202A, Washington Convention Center. Event no. 126: “Intelligent Compaction for Granular and Asphalt Materials. The International Intelligent Construction”. Technologies Group (www.IICTG.org) members are among the speakers: including IICTG President, Dr. George k. Chang of Transtec Group;  IICTG Executive Committee member, Prof. Soheil Nazarian of UTEP; and IICTG Technical Committee member, Mehran Mazari of Cal State LA. The agenda is as follow:

  • Primer in Intelligent Compaction (Mehran Mazari, California State University, Los Angeles)
    How IC Rollers Work as a Process Control Tool During Construction and Quality Control Tool After Compaction (George Chang, The Transtec Group, Inc.)
  • Institutional and Technical Challenges Experienced by Highway Agencies (Glenn Engstrom, Minnesota Department of Transportation)
  • Latest Research and Implementation Findings for Quality Management
    (David White, Ingios Geotechnics, Inc; Antonio Gomes Correia, University of Minho; Soheil Nazarian, University of Texas, El Paso)

FHWA, The Transtec Group Release Intelligent Compaction Measurement Values Tech Brief

The FHWA and Transtec released a technical brief to demystify Intelligent Compaction Measurement Values

Because Intelligent Compaction Measurement Values (ICMV) is a difficult subject to understand and there is a lack of systematic and comprehensive documents explaining ICMV, the Federal Highway Administration (FHWA) and pavement engineering firm The Transtec Group released a technical brief to demystify ICMV. The tech brief provides a comprehensive description on the mechanisms of ICMV and serves as a road map for using ICMV for real-time compaction monitoring, control, and acceptance. It covers how to measure and calculate ICMV, models for solving ICMV, and the various levels of ICMV.

Download the ICMV tech brief

ICMV is a generic term for advanced measurement systems instrumented on vibratory rollers as a key components of intelligent compaction (IC) systems. ICMV is based on the acceleration signals that represent the rebound force from the compacted materials to the roller drums. ICMVs are in different forms of metrics with various levels of correlation to compacted material’s mechanical and physical properties, such as stiffness, modulus, and density.

Without ICMV, it is difficult, if not completely impossible, to determine whether compaction has reached the required properties. In addition, ICMV can identify weak spots or difficult-to-compact locations even if there were sufficient roller passes for those areas. ICMV is the only technology that can provide measurements for as-built properties with 100 percent coverage of compacted areas. The tech brief provides important technical classification and level systems leading to true layer-specific modulus and density measurements of compacted materials.

ICMV helps contractors measure the levels of compaction during the compaction process to allow just-in-time adjustment of operation to optimize the compaction efforts, which leads to improved compaction quality control (QC).

ICMV provides owners and agencies with permanent records of as-built information that can be used for forensic studies and future rehabilitation decisions, which leads to improved quality acceptance and assurance (QA). High-level ICMV can also help with the future implementation of Building Information Modeling (BIM) for pavements.

Intelligent Compaction is an equipment-based technology to improve quality control of compaction.

Intelligent Compaction

IC is an equipment-based technology to improve quality control of compaction. IC vibratory rollers are equipped with a high precision global positioning system (GPS), infrared temperature sensors, an accelerometer-based measurement system, and an onboard color-coded display.  IC is used to improve compaction control for various pavement materials including granular and clayey soils, subbase materials, and asphalt materials. The accelerometer-based measurement system is a core IC technology that was invented in the early 80’s and is still evolving today.

Over the summer, the FHWA and Transtec released two other IC technical briefs:

  • Specification for Intelligent Compaction Technical Brief (FHWA-HIF-17-037) provides a review of national and state IC specifications and recommendations for future enhancements.
  • 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.

Veta Software

IC and paver-mounted thermal profiler (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 these 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 to 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.

40th Anniversary of CCC Symposium, Vienna, Austria, Nov. 29, 2018

The 40th Anniversary of CCC (Continuous Compaction Control) Symposium will be held in Vienna, Austria, Nov. 29, 2018. It is coordinated by Dr. Pistrol Johannes, also a Technical Committee member of IICTG. Back to where CCC was started in 1978, 40 years ago (now also known as Intelligent Compaction – IC), the symposium will cover the following topics:

• Historic overview of roller compaction and Continuous Compaction Control (CCC)
• Continuous Compaction Control – CCC applications and interpretation of measurements
• Field testing methods for compaction control (e.g. static and dynamic plate load test)
• Standardization, QA/QC and design aspects
• Recent and future developments (e.g. compaction equipment, electronics, internet)

The deadline for the abstract submission is April 30th, 2018. Please mark your calendar!