The discussion of the corrosion mechanism of fired-clay bricks soaked by sulfate solution

Author(s): P. Zhao, Y. S. Zhang, G. J. 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: 988-994
Total Pages: 7
Language : English

Abstract: Determine the change of compressive strength of fired-clay bricks in total sulfates immersion, and observed the characteristics and composition of the surface morphology of the corrosion products soaked for 28 days by scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy analyzer (EDS). The results showed that the sodium sulfate solution accumulated in the surface pores , salt crystallisation deserved particular attention,since they cause pressure inside pores and may induce the rupture of the pores walls, leading to disruptive effects, such as pulverisation, crumbling, blistering and flaking.

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