1. Measuring chloride binding in cementitious materials : a review by RILEM TC 298‑EBDFabien Georget, Arezou Babaahmadi, Alisa Machner, Maruša Mrak, Sabina Dolenec, Qing Xiang Xiong, Joseph Shiju, Didier Snoeck, Prannoy Suraneni, William Wilson, 2025, pregledni znanstveni članek Povzetek: The phase assemblage evolution of binders with novel supplementary cementitious materials (SCMS) during exposure to adverse environments needs to be quantified to accelerate their adoption, and further optimize binder formulation. As such, the interaction between chloride and cementitious matrices with novel SCMs needs to be quantified. The goal of workgroup 2 of RILEM TC EBD-298 is to assess the methods used to quantify chloride binding. This state-of-the-art report reviews the standardized and novel methods to measure chloride binding through an average content (acid/water soluble) or a specific bound content per phase (XRD, TGA, SEM–EDS, …). Each method is presented with respect to our current understanding of chloride binding and speciation in cementitious materials. The discussion around the purpose, use and reporting of each method highlights the gaps limiting the comparison between studies, in particular the lack of standard protocol, and complementary characterization. This review is the groundwork for a “cookbook” of experimental workflows to investigate chloride binding in modern cementitious binders.
Ključne besede: cement, chloride, supplementary cementitious materials, CSMs
Objavljeno v DiRROS: 12.01.2026; Ogledov: 221; Prenosov: 92
 Celotno besedilo (2,66 MB)
Gradivo ima več datotek! Več... |
2. Test methods for chloride diffusivity of blended cement pastes : a review by RILEM TC 298-EBDNeven Ukrainczyk, Thomas Bernard, Arezou Babaahmadi, Liming Huang, Christoph Zausinger, Anthony Soive, Stéphanie Bonnet, Fabien Georget, Maruša Mrak, Sabina Dolenec, Tobias Völker, Prannoy Suraneni, William Wilson, 2025, izvirni znanstveni članek Povzetek: The use of supplementary cementitious materials (SCM) is an important part of the roadmap for reducing CO2 emissions and extending the service life of reinforced concrete structures. To accelerate the adoption of SCMs, the RILEM Technical Committee 298-EBD evaluates scaled-down cement paste test methods to assess the effect of SCM on resistance to chloride and sulfate ingress and reactivity, which are critical to concrete durability. This review focuses on methods for measuring chloride diffusivity and is divided into four sections: diffusivity models and parameters, diffusion test methods (including NMR and chloride measurements), migration test methods and implications for future research. Key insights highlight the complexities of multi-species ionic and molecular diffusion/migration, including various binding interactions, and compares the different measurement methodologies. The review also addresses the test scale and aggregate effects, noting the pros and cons of testing at the paste, mortar, and concrete scales. The review underscores the need for further investigation into testing protocols and the influence of SCM on chloride diffusion, emphasizing that comprehensive testing across different scales provides complementary information for assessing durability performance.
Ključne besede: cements, chloride, SCMs
Objavljeno v DiRROS: 17.11.2025; Ogledov: 283; Prenosov: 154
Celotno besedilo (1,65 MB)
Gradivo ima več datotek! Več... |
