Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 304, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2021.124462
Keywords
Link slabs; Fibre-reinforced polymer; Engineered cementitious composites; Flexural behaviour; Nonlinear finite element
Categories
Funding
- Natural Science Foundation of China, China [52178192]
- Key Research Project of the Department of Education of Guangdong Province [2018KZDXM068]
- Innovation Group Support program of the Department of Education of Guangdong Province [2019KCXTD013]
- Innovation Group Science Fundation of the Natural Science Fundation of Chongqing, China [cstc2020jcyj-cxttX0003]
- Key Research Project of Jurong City [ZY2018004]
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Engineered cementitious composites link slabs, reinforced with fiber-reinforced polymer bars, demonstrated sufficient flexibility to meet the current design protocols. Research indicates that there are certain limitations to the depth-span ratio and reinforcement ratio of such link slabs, and the debonded length should exceed 0.8% to achieve low bending stiffness.
Deterioration of traditional mechanical expansion joints significantly affects the durability of bridge structures. Engineered cementitious composites have been proposed as an alternative to expansion joints in bridge decks. ECC link slabs were cast and tested under monotonic cyclic loading. Link slabs, reinforced with fibre-reinforced polymer bars, demonstrated sufficient flexibility to meet the current design protocols. Nonlinear finite element models were constructed based on the experimental data. Depth-span ratio and reinforcement ratio of such link slabs must not exceed 0.12 and 0.72%. Link slab debonded length should be larger than 0.8% to obtain low bending stiffness.
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