Monthly Archive: April 2017

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.


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 (

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.