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Pro061

Time-space effect on erosion substance about TSA of cement-based material



Title: Time-space effect on erosion substance about TSA of cement-based material
Author(s): F. Zhang, B. Ma, Y. Zhu, G. Ying, Y. Wu
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: 601 - 608
Total Pages: 8
Nb references: 9
Language: English


Abstract: Erosion substances are identified and time-space effect on erosion substances of paste specimens with 35% limestone powder immersed in sulfate solutions (MgSO4 ) with 33800 ppm mass concentration of SO4 2-at 5 °C±2 °C for 15 weeks are investigated. Erosion substances change from four-phases system including ettringite, gypsum, thaumasite and brucite to three-phases system including ettringite, gypsum and thaumasite, and then to twophases system including ettringite and gypsum only from surface to interior. Degradation about thaumasite form of sulfate attack in cement-based material is layer to layer with thaumasite formation and C-S-H gel decalcification.


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