MLS快速可移动式路面加速加载设备 ——为“一带一路”建设添力 MLS – Mobile Load Simulator Powering for “Belt and Road“ Yuchen Wang王于晨 SACTCC 南非-中国交通合作中心

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PaveTesting UK – MLS SA International manufacturing and servicing (TIPTOP China Limited - China) PaveTesting – MLS video

Basic Pave®MLS Specifications   Pave®MLS11 Pave®MLS30/33 Pave®MLS66/69 Wheel Carriages # 4 wheel bogies 6 wheel bogies Full load test section length mm 1070 3000/3300 6600/6900 Tyre footprint length 1420 4000 7600 Traffic Wheel width 80 590 Trafficking width (lateral traffic width) 80 - 230 (0 to ±75 wander) 590 - 1 600 (0 to ±500 mm wander) Lateral Traffic Load Distribution Gaussian or channelised Gaussian, step function, channelised or any user definable distribution Wheel description and configuration single dual / super single dual / super single/ aircraft Tyres Vredestein 6 ply pneumatic – 300mm diameter Goodyear 285/70 R19.5 and super single 495/45 R22.5 Goodyear 305/70 R22.5 and super single 495/45 R22.5 or H40x14 aircraft Tyre pressure kPa 560 - 800 500 - 1000 Wheel load kN 1.9 - 2.9 40 - 75 Wheel suspension and load control Constant Load - Mechanical Spring Costant load - Pneumatic Hydraulic Wheel velocity m/s 0.5 to 2.5 1.5 to 6 Nominal maximum wheel passes # / h 7200 6000 Rut depth (max) 10 40 Noise level dB - 85 at 7.2m Fabrication unit Metric system Life span of structural frame 30 Years subject to normal wear and tear. Expected fatigue of bogie frames measured in machine load cycles 100 million Mass kg 700 39,000 46,000 MLS dimensions m 2.7L x 0.7W x 1.2H 11.2L x 2.6W x 3.1H 14.8L x 2.6W x 3.1H

Pave®MLS Advantages 12 times faster: up to 22km/h + up to 6 wheel bogies Movable, Self-walking, for indoor and outdoors Wandering test LIM technology - Linear Induction Motors Low cost running and maintenance

Global MLS Users Total 35 units Total 100,000,000+ loadings

Relational / Technical support University of Pretoria, South Africa Acknowledgement: Fred Hugo & Johan Muller

2016 APT 2016 conference, Costa Rica More than 8 papers High Temperature Deformation Validating Efficiency of Reinforcement Grids Comparative Evaluation (WMA) Non-Destructive Pavement Structural Analysis HMA Resistance to Reflective Cracking Using Geo-composites Performance of UV Irradiation Aged Asphalt Mixtures Bearing Capacity of Standard Pavements Effects of Surface Condition on Non-uniform Contact Stresses

Standards South Africa - SANS series of Civil engineering test methods SANS 3001-PD1:2015 Edition 1 Determination of permanent deformation and moisture sensitivity in asphalt mixes with the MMLS3 - accepted for publication

Programs VTI – Blacksburg VA: Texas: South Africa: Collaborative research project (scaled MLS11 & f-s APT) completed & reported Texas: MLS11 testing on sections for evaluating skid resistance evaluation (Pecos, Texas) South Africa: Commercial evaluation of pavements as per standard testing protocols - > 70 tests/year

2017 Southeast University & JSTI Group, China: New MLS66 & MLS11 completed installation in May 2017. Planned to evaluate fatigue life of typical asphalt pavements with Cement Treated Base (CTB). Also maintenance options.

2017 Changsha University of Science & Technology, China: New MLS69 is arriving in Changsha December 2017. New laboratory has been ready for MLS69 arrival.

MLSUG Full-scale SEU & JSTI Liaoning EMPA Changsha BASt Tongji

MLSUG 1/3 scale Out of China JSTI Tongji Guangdong Changsha

MLSUG Worldwide – Belt and Road and in China – 15 Users, 20 Units MLS66/69 full scale system users (4 units): Tongji University Liaoning Transportation Research Institute SEU & JSTI Changsha University of Science & Technology MLS11 1/3 scale system users (15 units): Tongji University x 2 Chang’an University Chongqing Jiaotong University Inner Mongolian Agricultural University Hebei University of Technology Southeast University & JSTI RIOH of MOC Shanxi Transportation Research Institute Heilongjiang Transportation Research Institute Yunnan Highway Science Technology Institute Yunnan Jiaotong College Guangdong Hualu Transportation Technology Co., Ltd.

MLSCUG- MLS Chinese User Group How to get same testing results by different MLS users? How to compare Full Scale and 1/3 Scale MLS systems results? How to improve communication and co-operation between MLS users? How to share papers each other? How to calibrate the MLS systems? How to get latest APT news and trends in the world? How to develop Chinese testing standards for MLS system? Answer: MLS Chinese User Group (MLSCUG)

MLSCUG- MLS Chinese User Group Sponsor and Organization: TIPTOP China Limited, also as servicing supplier WeChat Group - MLSCUG (MLS Chinese User Group) MLS User Group Meeting every quarter Main participators: all F-S MLS users Activity participators: all MLS users Potential participators: all interested and potential MLS users, other APT equipment users Suggestions?

MLSCUG established at 1st WTC MLSCUG- MLS Chinese User Group established at 1st WTC in Beijing China on June 6th 2017.

Suggestions and Questions? Thank you! 张玮 Wayne Zhang Mobile & WeChat: +86-13817391739 E-mail: wayne@tiptoptest.com MLS Systems (Pty) Ltd PaveTesting Ltd: www.pavetesting.com TIPTOP China Ltd: www.tiptoptest.com 卓致力天中国有限公司 400-633-0508