JTK Consult (JTK) was engaged by Land Transport Authority of Singapore (LTA) to carry out Contract 7212 – Manufacturing and Testing of Steel Fibre Reinforced Concrete MRT Tunnel Lining Test Segments.
The work included carrying out trial mixes and testing of samples. This was done to meet the acceptance criteria set by LTA for the manufacturing and testing of tunnel lining segments. Testing of concrete samples was carried out by Setsco Services Pte Ltd and the Tunnel Lining Segments were tested at the Singapore Productivity centre. Testing of all samples was completed including cube compressive strength, tensile test, cylinder and flexural beam test. Segments were tested for flexure, bolt connection and cantilever loading. A factual report with results was submitted for LTA’s consideration. Based on the findings it was confirmed that the use of SFRC was suitable for precast segment manufacture with significant implications for productivity and long term durability of segments for construction.
Concrete and Construction Materials Technology:
review of fibre concrete for segment construction,planning and undertaking a full scale mock up testing to confirm appropriateness of SFRC for precasting
Structural Design and Technical Support:
review of the design implications based on the results and the innovative use of fibre concrete