Concrete under ammonium nitrate attack and stress corrosion

Author(s): U. Schneider
Paper category: workshop
Book title: Performance of cement-based materials in aggressive aqueous environments – characterization, modelling, test methods and engineering aspects
Editor(s): Nele De Belie
Print ISBN: none
e-ISBN: 978-2-35158-059-2
Publisher: RILEM Publications SARL
Pages: 23 - 30
Total Pages: 8
Language: English

Abstract: The behavior of ordinary concrete and high strength concrete under the attack of ammonium nitrate solutions was studied over a period of more than 10 years. The concrete specimens were immersed in a range of concentrations including 10%, 5%, 1% and 0.1% ammonium nitrate solutions and simultaneously subjected to different bending loads with load levels of 0%, 30%, 40% and 50% of their reference bending strengths. The strength and mass changes of the concrete specimens and the penetration depths of the immersed ammonium nitrate ions into the specimens and the porosity were measured. The influence of load level, quality of concrete and concentration of the solution on the process of the corrosion of the concretes was studied and is discussed on the basis of experimental observations.

Online publication: 2008
Publication Type: full_text
Public price (Euros): 0.00