Optical Fibre Sensing Used for Rail Track Monitoring - continued
Professor Tam Hwa-Yaw, Chair Professor of Photonics and Head of Department of Electrical Engineering, PolyU, said,
PolyU is proud to have exported its optical fibre sensing network to provide unprecedented health monitoring for mission-critical components in metro lines overseas.
This PolyU technology will help enhance the performance of metro systems through an advanced predictive monitoring and maintenance regime, which is now the best practice in the railway industry and a global trend. This also shows how an academic institution in Hong Kong can develop leading technology in the world through collaboration with the industry.
Dr Tan Chee Keong, Deputy Director of SMRT, Singapore, commented,
SMRT is most delighted to have PolyU’s advanced railway technology installed in our metro lines. With much foresight, SMRT is the first in the world to have adopted this preventive monitoring system, enabled by the cutting-edge railway technologies pioneered by PolyU. I am sure this optical fibre sensing network installed in both the tracks and running trains will enhance the operation of our metro lines.
An agreement was signed with SMRT in February 2016, and a trial run was completed successfully in June. The permanent monitoring system is now being installed in the two lines, to be completed in early 2017.
A variety of sensors developed by Hong Kong Polyu for real-time monitoring of railways’ track and operational conditions.
PolyU will provide training to SMRT staff in operating the system, while the data collected during monitoring can also be sent to PolyU real-time for analysis when needed.
In addition, PolyU will also provide maintenance and technical support to SMRT for a period of five years after the commissioning of the system.
Revised European Standard For Concrete Structures
BSI, the business standards company, has revised BS EN 206 Concrete – Specification, performance, production and conformity.
The European Standard applies to concrete for structures cast insitu, precast structures, and structural precast products for buildings and civil engineering structures.
The standard covers all types of concrete and nearly all types of precast concrete*. BS 206 also covers concrete for pavements where there are additional complementary requirements cited in the European Standard for Concrete pavements.
The revision specifically addresses that concrete may be designed for a working life of up to and over 100 years. This ensures that when its sustainability credentials are compared to other building materials the comparison may be carried out on an equitable basis.
BS EN 206 covers constituents of concrete; properties of fresh and hardened concrete and their verification; limitations for concrete composition; specification of concrete; delivery of fresh concrete; production control procedures; and conformity criteria and evaluation of conformity.
The standard will be of use to all members of a construction project who provide or require information on ready mix concrete, including construction contractors, specialists, manufacturers, specifiers and structural engineers.
BS EN 206 was developed using a collaborative consensus-based process with input from experts within the construction product sector such as the British Ready Mix Concrete Association, as well as structural engineers, construction product manufacturers, specifiers and trade association representatives.
Anthony Burd, Head of Built Environment at BSI, said:
The characteristics of concrete that may be needed depends on its end use application. These can range from such things as strength, maximum aggregate size or consistency to visual concretes where aggregate structure is on display.
The amendment to BS 206 was a result of BSI’s participation in the CEN technical committee CEN/TC 104.
*With an exception for some types of precast concrete.