Durability evaluation of different types of UHPC

Author(s): J. Piérard, B. Dooms, N. Cauberg
Paper category: Symposium
Book title: RILEM-fib-AFGC International Symposium on Ultra-High Performance Fibre-Reinforced Concrete
Editor(s): F. Toutlemonde, J. Resplendino
Print ISBN: 978-2-35158-130-8
e-ISBN: 978-2-35158-131-5
Publisher: RILEM Publications S.A.R.L
Pages: 275– 284
Total Pages: 10
Language: English

Ultra-high Performance Concrete (UHPC) offers the possibility to design exciting and innovative structures. This concrete type being relatively new in Belgium, some properties have still to be validated, more specifically for mixes made of local materials.
In order to evaluate the performances of UHPC exposed to different aggressive environments, the water porosity and the gas permeability of the concrete were measured and following accelerated tests were performed: resistance to carbonation, chloride diffusion, chemical attack, alkali-silica reaction and freeze-thaw cycling with and without de-icing salt. Compared to normal strength concrete, the duration of some tests had to be prolonged in order to get measurable values. Not only lab-produced concrete was tested but also concrete
produced in precast factories.
The results indicate a spectacular improvement in durability compared to normal strength concrete and even high performance concrete, illustrating a clear gain in service life of structures and a possible need to review some design rules related to durability.

Online publication: 2014
Publication Type: full_text
Public price (Euros): 0.00

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