期刊
CEMENT AND CONCRETE RESEARCH
卷 162, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.cemconres.2022.106988
关键词
X-ray diffraction; In-situ XRD; Laboratory XRD; Cement; Hydration
资金
- Brazilian governmental agency CAPES (Coordination for the Improvement of Higher Education Personnel)
- Brazilian governmental agency CNPq (Brazilian National Council for Scientific and Technological Development)
- Brazilian governmental agency FAPERGS (Foundation for Research Support of the State of Rio Grande do Sul)
- Spanish government [PID2020-114650RB-I00]
This paper discusses the use of in-situ laboratory XRD to assess cement hydration. It provides a literature review, discusses experimental strategies, recommends data analysis routine, and discusses the advantages and limitations of this technique.
In-situ X-ray diffraction (XRD) is a powerful tool to assess the hydration of cementitious materials, providing time-resolved quantitative analysis with reasonable accuracy without disturbing sample. However, the lack of guidelines and well-established procedures for data collection and analysis is the limiting factor for spreading this technique. This paper discussed using in-situ laboratory XRD to assess cement hydration. The first part was dedicated to a literature review on the topic. Then, experimental strategies were discussed, and recommenda-tions related to the data analysis routine were drawn; the advantages and limitations of this technique were also discussed. We can conclude that the critical factors for a successful analysis are the choice of an adequate experimental setup with good statistics and low measurement time, the proper consideration of different amorphous contributions in the XRD pattern, and a good data analysis routine. Independent techniques are highly recommended to support the in-situ XRD data.
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