期刊
ACI MATERIALS JOURNAL
卷 116, 期 4, 页码 173-181出版社
AMER CONCRETE INST
DOI: 10.14359/51716751
关键词
accelerated concrete cylinder test (ACCT); advanced characterization; alkali silica reaction (ASR); emerging test methods; fly ash; pozzolans; quantitative X-ray diffraction (QXRD)
资金
- Texas Department of Transportation
- Texas A&M Transportation Institute
- Texas AM University
The main objective of this study was to conduct a full-scale characterization of different types of fly ashes using conventional as well as advanced techniques and evaluating their effectiveness to prevent alkali-silica reaction (ASR) using an emerging accelerated concrete cylinder test (ACCT). The full-scale characterization of fly ashes involves evaluation of type and content of crystalline phases and amorphous content by quantitative X-ray diffraction (OXRD), soluble available alkalis (ASTM C311), and pore solution chemistry along with determination of parameters by the conventional ASTM 0618. A favorable comparison between characteristic chemical and mineralogical parameters of the fly ashes and ACCT-based ASR performance prediction was observed. This combined innovative approach was found to be effective to test the effectiveness (optimization) of different types of fly ashes to prevent ASR in a rapid (within 75 days) and reliable manner and formulate case-specific, performance-based, ASR-resistant concrete mixtures using locally available fly ashes.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据