Chloride Ion Penetration into Cracked UHPFRC During Wetting-drying Cycles

• Type: Chapter or Part of a Book
• Date: 2021

Authors

Ana Mafalda Matos (Author) FEUP; Sandra Nunes (Author) FEUP; Stefan Chaves Figueiredo (Author) Other; Erik Schlangen (Author) Other; José L. Barroso Aguiar (Author) Other

Book

Title: RSCC 2020: Proceedings of the 3rd RILEM Spring Convention and Conference (RSCC 2020)

Pages: 227-238

Other information

Authenticus ID: P-00V-727

DOI: 10.1007/978-3-030-76551-4_21

Abstract (EN): The subject of this paper is the extent to which, during wetting–drying cycles, chloride ions can penetrate Ultra-high-Performance Fibre Reinforced Cementitious Composites (UHPFRC) specimens subjected to combined mechanical and environmental load. Pre-cracking was obtained by subjecting prismatic specimens (40 × 40 × 60mm3) to four-point bending until a predefined crack opening displacement (COD) is reached, using a dedicated test setup. Three target CODs were studied: 300, 350 and 400 µm. Exposure to a concentrated chloride solution (3.5% NaCl) was used as an environmental load. Specimens we subjected to wetting–drying cycles for one year. After this exposure period, the chloride penetration was characterised both qualitatively (by colourimetric analysis with silver nitrate) and quantitatively (by determining the chloride profile). The effect of damage level on chloride penetration and its impact on structures durability is discussed in the current paper. © 2021, The Author(s), under exclusive license to Springer Nature Switzerland AG.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 12