...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Construction and Building Materials >Suitability of alkali activated slag/fly ash (AA-GGBS/FA) concretes for chloride environments: Characterisation based on mix design and compliance testing
【24h】

Suitability of alkali activated slag/fly ash (AA-GGBS/FA) concretes for chloride environments: Characterisation based on mix design and compliance testing

机译：碱活化矿渣/粉煤灰（AA-GGBS / FA）混凝土在氯化物环境中的适用性：基于混合料设计和一致性测试的表征

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Ground granulated blast furnace slag (GGBS) and fly ash are two of the most common industrial by-products used as precursors in an alkali activated material (AAM). Alkali-activated systems with fly ash as the sole precursor often require elevated temperature curing, while if made with GGBS alone can lead to flash setting, low workability and high degree of drying shrinkage. This article presents data from a range of GCBS/Fly Ash blends designed to avoid elevated temperature curing whilst achieving desirable fresh properties. Further, the suitability of such blended concrete for their use in chloride environments is outlined with the help of diffusivity testing and binding assessment. The results show that while attractive engineering properties can be achieved, chloride ingress in the AA-GCBS/FA concretes studied here with = 20% fly ash is moderate to high. Reduction in pH resulting from the long term exposure to chloride solution also affected the ability of the binder to chemically or physically binding chlorides. (C) 2019 Elsevier Ltd. All rights reserved.
机译：磨碎的高炉矿渣（GGBS）和粉煤灰是用作碱活化材料（AAM）前体的两种最常见的工业副产品。以粉煤灰为唯一前体的碱活化体系通常需要高温固化，而如果仅用GGBS制备，则可能导致飞边定型，低可加工性和较高的干燥收缩率。本文提供了一系列GCBS /粉煤灰共混物的数据，这些共混物旨在避免高温固化同时实现所需的新鲜特性。此外，借助于扩散性测试和结合评估概述了这种混合混凝土在氯化物环境中的适用性。结果表明，虽然可以实现引人注目的工程性能，但此处研究的粉煤灰> = 20％的AA-GCBS / FA混凝土中的氯化物侵入程度为中度至高。长期暴露于氯化物溶液导致pH降低，也影响了粘合剂化学或物理结合氯化物的能力。 （C）2019 Elsevier Ltd.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号