Intelligent Compaction News

IICTG Committee at TRB Intelligent Compaction Webinar – July 20

Intelligent Construction Technologies Group (IICTG) committee members will be presenting at an US Transportation Research Board (TRB) webinar “Application of Intelligent Compaction Technology for Compaction Quality Control of Pavement Layers” on Thursday, July 20, 2017 from US 2:00 PM to 3:30 PM EDT. This webinar will provide an overview of Intelligent Compaction (IC) technology, including how IC can be applied to soils, bases, and asphalt layers. IC deals with the continuous assessment of compacted layer properties using roller vibration parameters and roller speed integrated with GPS to provide comprehensive compaction information. Presenters will discuss the application of IC from different viewpoints, including academia, industry, and a state department of transportation.  This webinar was organized by the TRB AFP 70 Standing Committee on Aggregates and TRB AFS 20 Standing Committee on Geotechnical Instrumentation and Modeling.

The webinar presenters are as follows from IICTG and moderated by Mehran Mazari, California State University at Los Angeles:

Register now!

IICTG Committee at IC workshop of ICTIM 2017 Conference, Qingdao, China

The IICTG committee members will conduct an Intelligent Construction Technologies (ICT) and Intelligent Compaction (IC) workshop at the International Conference on Transportation Infrastructure and Materials (ICTIM) 2017 Conference, June 9th to 12th, in Qingdao, China.

The ICT/IC workshop will be conducted on June 9th. The speakers include:

  • Dr. George K.Chang, Transtec Group, USA, President and Executive Steering Committee of IICTG
  • Prof. Antonio Gomes Correia, U. Minho, Portugal, Vice President and Executive Steering Committee of IICTG
  • Prof. Guanghui Xu, Southwestern U., China, Treasurer/Secretary and Executive Steering Committee of IICTG
  • Mr. Jens Ruprecht, Hamm AG, Germany

Check out the workshop agenda for further details.

IICTG 2017 Conference (9/26-28) Open for Registration

The IICTG 2017 conference will be held at the Renaissance Minneapolis Hotel, The Depot, in Minneapolis, Minnesota, USA from September 26 to 28, 2017. The theme for IICTG 2017 is “ICT (Intelligent Construction Technologies) – Past and Future”.  The online registration is now open!

The conference will cover all aspects of ICT topics for infrastructure construction, including: integrated Intelligent Construction solutions, Intelligent Compaction (IC), Paver-Mounted Thermal Profiling (PMTP), Continuous Asphalt Density Measurement, 3D modeling and Automated Machine Guidance (AMG), and etc. along with research/implementation/case studies and panel discussions with ICT experts and leading agencies around the world. There will also be workshops on Intelligent Construction Data Manage with Veta (computer hands-on) workshop and CIM (Civil Integrated Management)/VDC (Virtual Design & Construction) workshop. Check out the agenda for further details.

About IICTG

The International Intelligent Construction Technologies Group (IICTG) is a source for knowledge and information on intelligent construction technologies for public agencies, contractors, consultants, academia, and other relevant industries.

IICTG provides a forum for the dissemination of knowledge concerning the collection, analysis, and application of information relating to intelligent construction technologies (ICT).

ICT consists of real time quality monitoring and process control during construction of foundation and pavements for highways, airports, railroads, dams, cities, and ports. ICT involves construction equipment technologies such as pavers, rollers, and other devices.

ICT also makes use state-of-the-art technologies such as Global Navigation Satellite System (GNSS), automated testing/monitoring (e.g., Intelligent Compaction), 3D designs/modeling, automated machine guidance (AMG), Cloud computing, Civil Integrated Management (CIM) and Building Information Modeling (BIM), etc. The goals of ICT are to improve quality control and acceptance of constructions as well as reducing life-cycle cost of the above mentioned assets.

Please visit the IICTG webpage for further information (www.IICTG.org).

China Releases Soils IC Spec

On April 12, 2017, China Ministry of Transport issued the first People’s Republic of China transport industry standards for soils subgrade IC specifications for highway construction. The Chinese title is “公路路基填筑工程连续压实控制系统技术条件》(JT/T 1127-2017” with the official English title as “Technical condition for continuous compaction control system of fill engineering of subgrade for highway”. The starting date to implement this standard is August 1st, 2017.  The team lead for developing this standard is the Treasurer and Secretary of IICTG (International Intelligent Construction Technologies Group), Prof. Guanghui Xu of Chinese Southwestern University.

The contents and requirements of this standard is consistent with the Chinese Soils IC specification for highspeed rail road bed construction that was implemented since June 1st, 2015. The key features are as follows:

  1. The ICMV is mechanistics-based, Vibratory Compaction Values (VCV). It is similar to Evib (used by BOMAG and Dynapac) and Kb (used by Ammann).
  2. For the trial section, the number of in-situ spots is more than 18 and the correlation (R) between spot test values and VCV should be greater than 0.7 (i.e., R^2 > 0.5).
  3. Stable vibration frequency (±0.6Hz) and relatively constant roller speeds (5~3.0km/h) are required.
  4. Onboard displays of compaction levels, uniformity and stability are required.
  5. Data files are in protected mode to avoid any alteration.
  6. Wireless data transmission to the Cloud is required.

It is expected the IC implementation for highspeed rail bed and highway soils subgrade construction will be accelerated in China in the near future. The asphalt IC implementation is expected soon, too.

Veta 4.2 Released

We are pleased to announce the release of Veta 4.2! New features focus on sublots and filtering. All changes are listed in the Release Notes and also provided below.

Download Veta 4.2

Filters

  • New: Operation filters that have not been viewed are marked with an asterisk (*).
  • Change: The “Cold Edge” filter has been renamed to “Cold Edge & Ride Bracket Filter”. In addition to removing cold edges, it will also remove longitudinal streaks of hot and cold data. This is usually caused by equipment blocking the sensor’s view of the pavement.

Many changes to filter groups. Because of the number of filter groups that are present in larger projects, folders can now be created to organize groups. Group and folder creation is now accomplished via the Filter Group Manager. The manager offers two naming templates. The first is actually empty and offers no restrictions on names, as before. The second template is specifically for MnDOT, although anyone can use it. The template will create groups that conform to MnDOT’s naming specification.

Sublots

  • Change: The selected filter group is linked to a specific sublot now through the use of checkboxes. Because this link is now defined in the sublots, the sublots input has been removed from the analysis setup.
  • New: Creating sublots for thermal profiling data will automatically generate the individual sublots based on the data. The start and stop points will also be set so as to exclude potentially unwanted data.

Analysis

  • Change: Different results were moved into the sublots results.
  • New: Added Variance to the Distribution statistics.