RESEARCH ON DEFORMATION PROPERTIES OF SCC USED IN HIGH SPEED RAILWAY SLAB BALLASTLESS TRACK OF CRTSⅢ

Author(s): Yanbin Tan, Huajian Li, Yongjiang Xie and Zhonglai Yi
Paper category: Proceeding
Book title: Design, Performance and Use of Self-Consolidating Concrete
Editor(s): Caijun Shi, Zhihua Ou and Kamal Henri Khayat
Print-ISBN: 978-2-35158-143-8
e-ISBN: 978-2-35158-144-5
Publisher: RILEM Publications SARL
Publication year: 2014
Pages: 309-317
Total Pages : 9
Language : English

Abstract: To determine the property of deformation of self-consolidating concrete(SCC), which used in filling layer of high speed railway slab ballastless track of CRTS Ⅲ, the factors which affect the deformation of filling layer SCC were studied. The results show that early curing can reduce the drying-shrinkage of concrete by 15% than that without early curing. Fineness modulus of sand has only a slight effect on drying-shrinkage of SCC. The influence of maximum size of aggregate on autogeneous shrinkage is higher than for drying-shrinkage. The content of binding material also have an obvious effect on both drying-shrinkage and autogeneous shrinkage of SCC. Both the values of drying-shrinkage and autogeneous shrinkage increased 10% to 20% when the content of binding material increased 20kg. The autogeneous shrinkage value of SCC can be 50% of drying-shrinkage value at early age(90d), and can reach 74% of drying-shrinkage value at long age(210d).

Online publication: 2017
Publication type: full_text
Public price (Euros): 0.00