Recommendation of RILEM TC 283-CAM: performance-based assessment of alkali-activated concrete durability using the 10 V rapid chloride permeability test

IF 3.9 3区工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY

Materials and Structures Pub Date : 2025-08-08 DOI:10.1617/s11527-025-02738-2

Arnaud Castel, Quang Dieu Nguyen, David Law, Taehwan Kim, Gabriel Samson, Martin Cyr, John L. Provis, Wengui Li

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Abstract

The major barriers to the widespread adoption of alkali-activated materials by the construction industry include concerns about durability and their exclusion from current standards. The chemical reactions characterizing alkali-activated binder systems differ drastically from the conventional hydration process of Portland cement. Thus, the mechanisms by which concrete achieves potential durability are different between the two types of binders. RILEM Technical Committee (TC) 283-CAM (Chloride transport in Alkali-activated Materials) aimed to address key questions related to chloride transport in alkali-activated binders and concretes, with a view toward drafting recommendations for the appropriate selection and application of testing methods, and this document represents a key output of that TC.

The standard ASTM C1202 Rapid Chloride Permeability Test (RCPT) method fails to measure the charge passed through most alkali-activated concretes due to samples overheating when applying the specified 60 V potential difference. A modified RCPT using a 10 V potential difference was used in the interlaboratory testing campaign of TC 283-CAM. The 10 V-RCPT method described in this Recommendation allowed the successful completion of tests for all alkali-activated concretes considered. Various precursors were investigated including fly ash, GGBS, calcined clay and ferronickel slag. 10 V-RCPT results are validated against ASTM C1556 bulk diffusion test results. Performance-based specifications are proposed.

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RILEM TC 283-CAM建议：使用10v快速氯化物渗透试验对碱活化混凝土耐久性进行基于性能的评估

建筑行业广泛采用碱活化材料的主要障碍包括对耐久性的担忧以及它们被排除在现行标准之外。碱活化粘结剂体系的化学反应与硅酸盐水泥的常规水化过程有很大不同。因此，混凝土实现潜在耐久性的机制在两种类型的粘合剂之间是不同的。RILEM技术委员会（TC） 283-CAM（碱活化材料中的氯化物迁移）旨在解决与碱活化粘合剂和混凝土中的氯化物迁移有关的关键问题，以期起草适当选择和应用测试方法的建议，本文件代表了该技术委员会的关键成果。标准的ASTM C1202快速氯化物渗透性试验（RCPT）方法在施加规定的60v电势差时，由于样品过热，无法测量通过大多数碱活化混凝土的电荷。在tc283 - cam的实验室间测试活动中，使用了一种使用10 V电位差的改进RCPT。本建议中描述的10 V-RCPT方法允许对所有考虑的碱活化混凝土成功完成试验。研究了粉煤灰、GGBS、煅烧粘土和镍铁渣等前驱体。10 V-RCPT结果对照ASTM C1556散装扩散试验结果进行验证。提出了基于性能的规范。

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来源期刊

Materials and Structures 工程技术-材料科学：综合

CiteScore

6.40

自引率

7.90%

发文量

222

审稿时长

5.9 months

期刊介绍： Materials and Structures, the flagship publication of the International Union of Laboratories and Experts in Construction Materials, Systems and Structures (RILEM), provides a unique international and interdisciplinary forum for new research findings on the performance of construction materials. A leader in cutting-edge research, the journal is dedicated to the publication of high quality papers examining the fundamental properties of building materials, their characterization and processing techniques, modeling, standardization of test methods, and the application of research results in building and civil engineering. Materials and Structures also publishes comprehensive reports prepared by the RILEM’s technical committees.