Nurturing the Young –

Innovation for Sustainability

Events and Activities

Technical Seminar “Vertical Concrete Pumping: Techniques and Applications”

Date, time & venue 
2015-07-31;6:00pm for 6:30 pm – 8:00 pm;Seminar Room, HKIE-HQs


Joint Organizers

Jointly organized by Hong Kong Concrete Institute (HKCI), Civil Division & Material Division of HKIE



Speaker 1:  Ir Dr. ZHENG Wei, Herbert

Herbert is currently the Concrete Services General Manager of Gammon Construction Limited.  He has worked in different sectors of the concrete industry for more than 25 years. Since 2003, his work has been focusing on the design, production, supply and application of high-performance concrete for various landmark construction projects built by his company. 

Herbert received his undergraduate degree and doctoral degree from at Tongji University in 1990 and the University of Hong Kong in 2001 respectively.  He is a Discipline Advisory Panel member and a member of the Materials Division of The Hong Kong Institution of Engineers. 


Speaker 2:  Mr. CHENG Tak Sum

Mr. Cheng is currently the Site Superintendent for Marine Works of Dragages Hong Kong Ltd. under the Tuen Mun – Chek Lap Kok Link – Northern Connection Sub-sea Tunnel Section Project.  He has worked in the contractor sector for more than 52 years and has extensive experiences in site supervision and management of large-scale civil engineering projects including, roadworks, tunnels, deep shafts, bridge structure and reclamation works in Hong Kong.  


Programme Highlights

Due to its efficiency and economic benefits, vertical concrete pumping is becoming increasingly popular for the vertical transportation of concrete in civil and building construction projects.  However, successful pumping operations require certain amount of knowledge and experience. This technical talk explains why high workability concrete is not necessarily pumpable, what key parameters to make concrete pumpable and how to design and establish a proper vertical pumping system. 



Free of charge


Registration & Enquiries

This seminar is free of charge and prior registration is not required. The number of participants is limited to 80 and the seats will be allocated on a first-come-first-served basis.  For enquiries, please contact Ir Vincent Tam at 9555 1932.


CPD Certificate

CPD certificate will be issued to those who attend the seminar.


Remarks: The seminar will be conducted in Cantonese.


Technical Seminar on “Vertical Concrete Pumping: Techniques and Applications”

By Miss LAM, Hei Ki


Vertical concrete pumping is increasingly popular in civil and building construction projects. While it brings efficiency and cost benefit to the construction projects, improper pumping operation can result in poor concrete property and lead to the waste of time and money. Hence, it is essential to know the key factors that influence the success of vertical concrete pumping operation. We were honored to invite Ir Dr. Zheng Wei, Herbert and Mr. Cheng Tak Sum to share their expertise in the seminar: “Vertical concrete Pumping: Techniques and Applications”. The seminar was jointly organized by the Hong Kong Concrete Institute (HKCI), Civil Division and Material Division of HKIE on 31 July 2015 and was well attended with more than 200 participants.


Ir Dr. Zheng has worked in the concrete industry for more than 25 years. He has been involved in design, production, supply and application of high-performance concrete for various landmark construction projects in Hong Kong. In the presentation, he shared with us the properties of concrete, such as its workability, mechanical properties, durability and pumpability of fresh concrete. His detailed interpretation of the concrete characteristics gave the audience a better understanding of the concrete pumping operation on site.


Mr. Cheng has worked in the contractor sector for more than 52 years. He pointed out that the ambient temperature, weather, application of concrete vibrator and delivery time of concrete can be the key factors in affecting workability and the finishing of concrete. He also shared his experience in supervising vertical concrete pumping operation at construction site. For instance, awareness should be given to the surface and lower part of concrete works where defects may easily appear if the fresh concrete is over-vibrated.


The seminar ended with a Q & A session to answer the questions from the participants. We would like to express our sincere gratitude to Ir Dr. Zheng and Mr. Cheng for their valuable sharing.






A group photo with the speakers at the end of the seminar.

Ir Dr. Zheng Wei: 2nd from the right

Mr. Cheng Tak Sum: 4th from the left


More than 200 participants attending the seminar

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