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88. Evaluation of improvement in the bearing capacity of fibre reinforced shotcrete tunnel lining



Title: 88. Evaluation of improvement in the bearing capacity of fibre reinforced shotcrete tunnel lining
Author(s): J. Šušteršic, V. Jovicic, A. Zajc, R. Ercegovic
Paper category : conference
Book title: 6th International RILEM Symposium on Fibre Reinforced Concretes
Editor(s): M. di Prisco, R. Felicetti and G.A. Plizzari
Print-ISBN: 2-912143-51-9
e-ISBN: 2912143748
Publisher: RILEM Publications SARL
Publication year: 2004
Pages: 985 - 994
Total Pages: 10
Language: English


Abstract: Hybrid fibre reinforced shotcrete (FRS) with steel and polypropylene fibres was investigated during the performance of research field of the tunnel lining. Beside compressive strength at different ages of FRS, modulus of elasticity, flexural strength and above all post-crack behaviour were measured on the samples sawn from the test panels. Toughness obtained with different test methods can be used to determine equivalent strength. Bearing capacity of FRS tunnel lining will improve, if FRC has higher crack opening resistance, which can be measured with equivalent strength at the selected crack width. Wedge splitting test (WST) method was used to obtain load - CMOD curves and determine equivalent strength at the selected crack width. This strength of FRS is high enough to improve bearing capacity of FRS tunnel lining at early age, already.


Online publication: 2004-08-30
Publication type : full_text
Public price (Euros): 0.00