Interaction between carbon steel and low-pH bentonitic cement grout in anoxic, high temperature (80 °C) and spatially heterogeneous conditions
Source abstract
Abstract
Anoxic corrosion processes impacting carbon steel samples for both intimate and imperfect metal/ low-pH bentonitic cement grout (BCG) contacts were studied at 80 °C. SEM, XRD and µ-Raman spectroscopy analyses supported by geochemical modelling allowed a full characterization of the corrosion mechanism. Steel in direct contact with BCG suffered from localized corrosion (pits measuring up to 160 µm in depth after 150 days of exposure) principally triggered by the presence of HS-. Depending on silicate and sulphide ingress from the BCG towards the interface, neoformed magnetite may be converted to iron silicates and/or iron sulphides.
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Research context
OpenAlex topics: Corrosion Behavior and Inhibition · Concrete Corrosion and Durability · Concrete and Cement Materials Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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