𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Non destructive determination of the free chloride content in cement based materials

✍ Scribed by B. Elsener; L. Zimmermann; H. Böhni

Publisher
John Wiley and Sons
Year
2003
Tongue
German
Weight
187 KB
Volume
54
Category
Article
ISSN
0947-5117

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

A non‐destructive chloride sensitive sensor element for use in cement based porous materials is presented. The sensor element determines the activity of the free chloride ions in solutions and in porous cement based materials such as cement paste, mortar or concrete. The calibration in synthetic pore solution showed a response according to Nernst law over three decades of chloride concentration. The sensor element has shown excellent reproducibility and long term stability. The sensor element has been used to monitor the chloride uptake into mortar specimens. The results show a good agreement between the free chloride content determined by the sensor and by pore water expression. Applications in monitoring of reinforced concrete structures and their limitations are discussed.

📜 SIMILAR VOLUMES

Assessment of simple methods of determin
Assessment of simple methods of determining the free chloride ion content of cement paste
✍ C. Arya; N.R. Buenfeld; J.B. Newman 📂 Article 📅 1987 🏛 Elsevier Science 🌐 English ⚖ 565 KB

A range of possible techniques for assessing the "free" chloride ion content of hydrated cement pastes dosed with sodium chloride or calcium chloride have been investigated. The techniques are based on mixing powdered samples with a solvent and measuring the amount of chloride passing into solution.