Study on service durability of bearing grouting material for high speed railway

Author(s): H. X. Zhou, J. P. Liu, J. Z. Liu
Paper category: Proceedings
Book title: Proceedings of the Seventh International Conference on Concrete under Severe Conditions – Environment and Loading
Editor(s): Z.J. Li, W. Sun, C.W. Miao, K.Sakai, O.E. Gjørv, N.Banthia
ISBN: 978-2-35158-124-7
e-ISBN: 978-2-35158-134-6
Publisher: RILEM Publications SARL
Publication year: 2013
Pages: 968-976
Total Pages: 9
Language : English

Abstract: High-speed railway adopts a large proportion of the bridge structure, while the durability of the super-early strength bearing mortar material plays a vital role in guaranteeing security, comfort and fast running of the high-speed railway as the material is the main bearing point connecting the bridge and the lower and the pier. Based on the service characteristics of the bearing grouting material, this paper focuses on the effect of drying-wetting cycle and freezing-thawing cycle conditions on the bearing performance, bond durability and frost resistance of bearing grouting material. Test results show that the bearing grouting material meets the static and dynamic load requirements of high-speed railway bridge because it has super early strength and high bearing capacity, Cyclic drying-wetting condition shows little impact on the compressive strength and relative dynamic elastic modulus of the bearing grouting material. But under the freezing-thawing cycle condition, the material proves to have excellent bonding performance and bonding durability and frost resistance, meeting the requirements of stability of bearing installation and the stationarity of high speed running. In addition, and the later period maintenance is very important to bearing grouting material in the course of service.

Online publication : 2013
Publication type : full_text
Public price (Euros) : 0.00