Corrosion resistance of cement asphalt mortar

Title: Corrosion resistance of cement asphalt mortar
Author(s): F. Wang, Z. Liu, T. Wang, S. Hu
Paper category : conference
Book title: International Conference on Microstructure Related Durability of Cementitious Composites
Editor(s): W. Sun, K. van Breugel, C. Miao, G. Ye and H. Chen
Print-ISBN: 978-2-35158-065-3
e-ISBN: 978-2-35158-084-4
Publisher: RILEM Publications
Publication year: 2008
Pages: 429 - 436
Total Pages: 8
Nb references: 10
Language: English

Abstract: Slab track is an advanced track structure in high speed railway. Cement asphalt mortar (CA mortar) is the key component in the structure of slab track and serves as the elastic shock-absorber. In the paper, CA mortar with different asphalt emulsion and cement ratios (A/C) was subjected to various aggressive media (acid, alkali, salt and oil), and the variation in compressive strength, mass and surface appearance of specimens were compared with reference CA mortar. Results indicated that compressive strengths of CA mortar exposed to acid, alkali and oil were decreased to various extents; the higher A/C and the concentration of aggressive solutions were, the more prominent the tendency of degradation was, Neither significant mass loss or gain was observed, nor was the surface scaling. CA mortar was capable of withstanding salt attack and no remarkable difference in compressive strength was noted. In addition, FTIR test of the samples exposed to aggressive environment indicated that mineralogical composition of CA mortar was stable.

Online publication: 2009-06-09
Publication type : full_text
Public price (Euros): 0.00