Sulfate attack testing approaches from concrete to cement paste: A review by RILEM TC 298-EBD

IF 3.9 3区 工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY
Qiao Wang, Wolfgang Kunther, Ye Li, Talakokula Visalakshi, Ramesh Gomasa, Sofiane Amroun, Diego Jesus De Souza, Mahipal Kasaniya, Ilda Tole, Xuerun Li, R. Douglas Hooton, Prannoy Suraneni, William Wilson
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Abstract

Most existing test methods determine the sulfate resistance of concrete using accelerated methods in the laboratory, on mortar or concrete specimens. However, these accelerated tests often use high sulfate concentrations or require very complicated setups, which may alter the deterioration mechanisms, while still being laborious and time-consuming. Additionally, the need for more sustainable binders and distinctive properties of systems incorporating emerging supplementary cementitious materials (SCMs) may limit the applicability of conventional test methods. In this context, the Working Group 3 of RILEM TC 298-EBD aims to develop simple accelerated test methods on cement pastes for evaluating sulfate resistance, which directly investigate the reactive component of concrete. Working at this scale can provide reliable results in a much shorter time than traditional tests on mortars and concretes, while providing means to assess the impact of different SCMs and binders on the resistance to sulfate attack. This paper presents our first step, a critical literature review on sulfate deterioration testing from the concrete/mortar to the cement paste scale. We present a general introduction to sulfate attack, common test parameters, assessment methods, test setups for paste specimens, a discussion of potential approaches, and concluding remarks. Insights gained from this review will be instrumental in establishing an effective and reliable approach to sulfate deterioration testing on cement paste specimens.

从混凝土到水泥浆的硫酸盐侵蚀测试方法:RILEM TC 298-EBD综述
大多数现有的试验方法是在实验室用加速法测定砂浆或混凝土试样的混凝土抗硫酸盐性。然而,这些加速试验通常使用高浓度硫酸盐或需要非常复杂的设置,这可能会改变变质机制,同时仍然是费力和耗时的。此外,对更具可持续性的粘合剂的需求以及包含新兴补充胶凝材料(scm)的系统的独特性能可能会限制传统测试方法的适用性。在此背景下,RILEM TC 298-EBD第3工作组旨在开发用于评估水泥浆抗硫酸盐性的简单加速测试方法,直接研究混凝土的活性成分。与传统的砂浆和混凝土测试相比,在这种规模下工作可以在更短的时间内提供可靠的结果,同时提供了评估不同SCMs和粘合剂对抗硫酸盐侵蚀的影响的方法。本文介绍了我们的第一步,从混凝土/砂浆到水泥膏体尺度的硫酸盐劣化试验的重要文献综述。我们介绍了硫酸盐侵蚀的一般介绍,常见的测试参数,评估方法,膏体样品的测试设置,潜在方法的讨论,和结束语。从本综述中获得的见解将有助于建立有效可靠的水泥膏体硫酸盐劣化试验方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Materials and Structures
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.
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