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The 18th World Conference of the Associated Research Centers for the Urban Underground Space

The 2nd International Conference on Exploration and Utilization of Underground Space

 

1 - 4 November 2023 // Singapore

 

 

 

 

 Concrete Technology

Correct EN12390 testing of hardened concrete and the most common mistakes

by Mr. Hans-Heinrich Reuter, TESTING Bluhm and Feuerherdt GmbH

Friday, 30th June 2023 // 7.00 - 8.30 pm

 

 

 

ABSTRACT:

  

 

This presentation will help engineers and technicians avoid the most common mistakes during the sample preparation, sample storage and finally during the physical sample test in the compression test machines as especially the sum of the mistakes can cause false results.

 

 

ABOUT THE SPEAKERS:

  

Mr. Hans-Heinrich Reuter studied civil engineering and obtained his M.Eng. at the University of Wismar and Dipl.-Ing. at the University of Luzern (Switzerland). Hans worked in Basler & Hofmann in the field of concrete engineering in Switzerland and technical business development in Southeast Asia based in Singapore where he was involved in large-scale tunnel projects. Due to the demanding test sequences of construction materials, Hans became an expert for servo hydraulic testing machines and for special tests for displacement and force-controlled test plants. His latest studies were made globally in the field of fibre concrete testing and concrete sleeper test plants as well as in the development of special testing devices for the mortar industry. Hans is currently CEO at TESTING Bluhm and Feuerherdt GmBH in Berlin, active in the field of laboratory equipment and laboratory machines for the construction and building industry. He is also an International Member of ASTM.

 

 

REGISTRATION:

-         From 2023, all webinars will remain FREE.

 

-         However, those attendees who are NON-MEMBERS but want to get the attendance email to claim for PDU/STU points will be required to pay SGD15 per point.

 

 

-         All members who have paid your membership fees will get your attendance email for FREE. 

 

To register, please visit the following link.

 

 

Tunnel Engineering Development in Taiwan

by Assoc. Prof An-Jui Li

Friday, 28th July 2023 // 7.00 - 8.30 pm

 

 

 

ABSTRACT:

  

 

Taiwan is located at the junction of the Eurasian continental plate and the Pacific Ocean plate. The terrain is highly undulating, and the north-south direction of Taiwan is long and narrow, resulting in steep slopes and complicated geological conditions. Since the 1950s, tunnel engineering in Taiwan has gradually begun to develop. Over time, our focuses are moved from new constructions to other tunnel-related projects, such as tunnel line improvement, existing tunnel maintenance, and tunnel functional development. In addition to the generally considered safety issues, risk control has also received attention in recent years. This topic will give a brief introduction to the evolution of tunnel engineering in Taiwan. Afterwards, case studies will be used to introduce the more special construction methods and considerations for the recent tunnel constructions. Current tunnel engineering difficulties and challenges encountered in Taiwan will also be shared. 

 

 

ABOUT THE SPEAKERS:

  

Associate Professor An-Jui Li received his Ph.D. degree from the Department of Civil, Environmental and Mining Engineering. The University of Western Australia. He is currently an Associate Professor in the Department of Civil and Construction Engineering and Director in Business Incubation Centre, National Taiwan University of Singapore and Technology. His research interests include slope stability, AI application in geotechnical engineering, RPA in geotechnical engineering, and Geo-based Apps.

 

 

REGISTRATION:

-         From 2023, all webinars will remain FREE.

 

-         However, those attendees who are NON-MEMBERS but want to get the attendance email to claim for PDU/STU points will be required to pay SGD15 per point.

 

 

-         All members who have paid your membership fees will get your attendance email for FREE. 

 

To register, please visit the following link.

 

 

Concrete Technology - Concrete Strength Prediction

by Ms. Chang Qingyang, ConcreteAI

Friday, 25th August 2023 // 7.00 - 8.30 pm

 

 

 

ABSTRACT:

  

 

In construction projects, it is important to know the strength of concrete at a early age because many decisions rely on this information. However, the current method of determining early-age concrete strength through cube testing is tedious and challenging. The strength development of a concrete structure is greatly influences by temperature and weather conditions. Cube strength does not accurately represent the actual in-situ strength in its early stages due to differences in volume and curing environment, which affect heat emission and strength determination. Moreover, the process of making concrete cubes relies heavily on human involvement, leading to issues like low breaks and inconsistent compressive test results.

 

To address these challenges, ConcreteAI has developed a proprietary technology that leverages IoT technology and the maturity method to assess real-time in-situ strength. This approach aims to enhance productivity and reduce resource wastage. The technology also includes sensors that can monitor temperature and differentials for mass concrete structures, mitigating the risk of early-age cracking. During the presentation, the speaker will elaborate the methodology of measuring in-situ concrete strength. She will also share how this technology has been successfully applied in various infrastructure, precast, and building projects.

 

 

ABOUT THE SPEAKERS:

  

Ms. Chang Qingyang is the CEO and Co-Founder of ConcreteAI. She has a background in Civil Engineering from the National University of Singapore. Her final year research paper has won the NUS Outstanding Research Prize and the Faculty of Engineering Innovation & Research High Achievement Award. She has worked in the industry as a site engineer, where she gained a strong understanding of construction planning and site operations.

 

ConcreteAI is a deep-tech spin-off from the National University of Singapore, the Philip Yeo Initiative, and Investors. The company's mission is to simplify construction processes on job sites, enhancing productivity and sustainability. ConcreteAI was also honoured with the Innovation Award at the Built Environment Demo Day 2022 organised by BCA Built Environment Technology Alliance.

 

 

REGISTRATION:

-         From 2023, all webinars will remain FREE.

 

-         However, those attendees who are NON-MEMBERS but want to get the attendance email to claim for PDU/STU points will be required to pay SGD15 per point.

 

 

-         All members who have paid your membership fees will get your attendance email for FREE. 

 

To register, please visit the following link.

 

 

A Glimpse of Tunnelling in Malaysia

by Ir. Khoo Chee Min

Friday, 24th November 2023 // 7.00 - 8.30 pm

 

 

 

ABSTRACT:

  

 

The presentation will provide an up-to-date overview of the notable trends and developments of tunnels in Malaysia. It will also outline the recent achievements in tunnel and tunnelling technology and development of risk management in tunnelling works locally. The sustainable use of tunnels in Malaysia to support the UN's Sustainable Development Goals will be briefly discussed with a few case studies.

 

 

ABOUT THE SPEAKER:

  

Ir. Khoo Chee Ming has more than 20 years of work experience specializing in geotechnical and tunnel engineering on the diverse building and infrastructure projects. He is a past Chairman of Tunnelling and Underground Space Technical Division, IEM as well as Deputy Organising Chairman of World Tunnel Congress 2020. He serves as Member Nation's representative to the International Tunnelling & Underground Space Association (ITA) Working Group 2 - Research and Working Group 11 - Immersed and Floating Tunnels. He has published more than 20 technical papers and is the co-author for the winning paper entitled "The Present & Future Sustainable Use of Underground Space in Malaysia" which was awarded the Tan Sri Ir. Hj. Yusoff Prize 2019, the highest recognition for outstanding technical papers on engineering contributed by corporate members of IEM in the civil engineering discipline.

 

 

REGISTRATION:

-         From 2023, all webinars will remain FREE.

 

-         However, those attendees who are NON-MEMBERS but want to get the attendance email to claim for PDU/STU points will be required to pay SGD15 per point.

 

 

-         All members who have paid your membership fees will get your attendance email for FREE. 

 

To register, please visit the following link.

 

 

Engineering Geology Works in Singapore Infrastructure Projects

by Dr. Kar Winn, SRMEG

Friday, 26th January 2024 // 7.00 - 8.30 pm

 

 

 

ABSTRACT:

  

 

In this presentation, engineering geology works in underground rock excavation project and rock slope stability assessment will be discussed. In underground excavation project, the study of subsurface geology of the planned area, in-situ stress measurement, Geological Strength Index (GSI) determination on excavated rock faces, stability analysis of geology structure-controlled gallery profile and basic principles for storing oil and gas in unlined rock caverns will be presented. The slope stability of an abandoned quarry will be assessed by Q-slope method proposed by Barton and Bar (2015).

 

 

ABOUT THE SPEAKER:

  

Dr Kar Winn is currently working as a Sessional Lecturer with Newcastle Australia Institute of Higher Education (NAIHE) and a freelance consultant. He is currently the President of Myanmar Geologists Society Singapore and Committee Member of Society of Rock Mechanics and Engineering Geology (Singapore). He received his B.Sc. (Geology) from Rangoon Arts & Science University, Myanmar in 1976, M.Sc. (Geotechnical Engineering), M.Sc. (International Construction Management) and Ph.D. from Nanyang Technological University, Singapore in 1999, 2005 and 2019 respectively. In Myanmar, he worked as an Exploration Geologist with Myanmar Oil Corporation and Myanmar Shell B.V before moving to Singapore in 1993. He works here in engineering geology, geotechnical engineering and rock mechanics fields involving with various projects such as geotechnical site investigation & instrumentation, underground rock cavern excavation, cut & cover excavation & tunnelling works and rock slope stability analysis etc.

 

 

REGISTRATION:

-         From 2023, all webinars will remain FREE.

 

-         However, those attendees who are NON-MEMBERS but want to get the attendance email to claim for PDU/STU points will be required to pay SGD15 per point.

 

 

-         All members who have paid your membership fees will get your attendance email for FREE. 

 

To register, please visit the following link.

 

 

Low-Carbon Fibre Reinforced Concrete in Sprayed, Precast & Cast-in-Situ Concrete Underground Applications in Singapore

by Mr. Gan Cheng Chian, NV Bekaert

Thursday, 22 February 2024 // 7.00 - 8.30 pm

 

 

 

ABSTRACT:

  

 

Fibre reinforced concrete (FRC) has been used in Southeast Asia since 1990. With the recent publication of the Singapore Standard SS 674: 2021, the use of fibre reinforced concrete is increasing. This comes at a time when low carbon concrete solutions are also being actively promoted. FRC are used in sprayed, precast & cast-in-situ concrete. This paper will present the use of FRC in these 3 underground applications in Singapore. Some design and QA/QC issues will be discussed. And lastly, the way to move further into low-carbon solutions will be explained.

 

 

ABOUT THE SPEAKER:

  

Mr. GAN Cheng Chian - Technical Manager at Bekaert in Singapore. Member of the Working Group on SS674-2021 since Jan 2019. Domain Expert for Sprayed Concrete and Fibre Reinforced Concrete under Intelligent National Productivity and Quality Specification Singapore since Mar 2019. Vice-President of Society for Rock Mechanics & Engineering Geology (Singapore) since Mar 2021. 35 years of civil engineering experience. 1998 to present, involved in over 22 sprayed fibre concrete tunnel linings and over 20 fibre concrete precast segmental and cast concrete tunnel lining projects.

 

 

REGISTRATION:

-         From 2023, all webinars will remain FREE.

 

-         However, those attendees who are NON-MEMBERS but want to get the attendance email to claim for PDU/STU points will be required to pay SGD15 per point.

 

 

-         All members who have paid your membership fees will get your attendance email for FREE. 

 

To register, please visit the following link.

 

 

Controlled Rock Blasting in Urban Environment

by Dr. An Xinmei, Land Transport Authority

Wednesday, 29th May 2024 // 7.00 - 8.30 pm

 

 

 

ABSTRACT:

  

 

The seminar will explore controlled rock blasting techniques used in urban environment in Singapore. Key topics include rock blasting design elements such as decoupled charging, spacing, delay blasting, aimed at balancing efficiency and minimising impacts on nearby structures. Empirical formulae for predicting ground vibrations were caliberated with instrumentation data. Measures to reduce vibrations and mitigate fly rocks, including traffic management and line drilling to protect structures will be discussed. Suggested blasting limits for various structural components will be provided. As Singapore lacks formal blasting limits for various structural shared data can serve as a reference for future projects.

 

 

ABOUT THE SPEAKERS:

  

Dr. An Xinmei is a Senior Project Manager in Land Transport Authority, Singapore. She is a certified Project Management Professional (PMP) and a Chartered Engineer (CEng) in both Infrastructure Engineering and Engineering Project Management. With over 18 years of experience in rock engineering and underground space development, Dr An has involved in various projects such as the NTU-DSTA joint UTRE programme on underground space development for civilian and military purposes, the deep excavation and tunnelling in the Thomson East Coast Line, and the elevated structures in the Jurong Region Line. She has published over 50 papers in these fields. Dr An currently serves as the Vice President of the SRMEG.

 

 

REGISTRATION:

-         All webinars will remain FREE.

 

-         However, those attendees who are NON-MEMBERS but want to get the attendance email to claim for PDU/STU points will be required to pay SGD15 per point.

 

 

-         All members who have paid your membership fees will get your attendance email for FREE. 

 

 

 

 

To register, please visit the following link.