A Python tool to determine the thickness of the hydrate layer around clinker grains using SEM-BSE images

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-02-26 DOI:10.1111/jmi.13283

Florian Kleiner, Franz Becker, Christiane Rößler, Horst-Michael Ludwig

{"title":"A Python tool to determine the thickness of the hydrate layer around clinker grains using SEM-BSE images","authors":"Florian Kleiner, Franz Becker, Christiane Rößler, Horst-Michael Ludwig","doi":"10.1111/jmi.13283","DOIUrl":null,"url":null,"abstract":"To accurately simulate the hydration process of cementitious materials, understanding the growth rate of C-S-H layers around clinker grains is crucial. Nonetheless, the thickness of the hydrate layer shows substantial variation around individual grains, depending on their surrounding. Consequently, it is not feasible to measure hydrate layers manually in a reliable and reproducible manner. To address this challenge, a software has been developed to statistically determine the C-S-H thickness, requiring minimal manual interventions for thresholding and for setting limits like particle size or circularity.This study presents a tool, which automatically identifies suitable clinker grains and and perform statistical measurements of their hydrate layer up to a specimen age of 28 days. The findings reveal a significant increase in the C-S-H layer, starting from 0.45 <math>\n <semantics>\n <mrow>\n <mi>μ</mi>\n <mi>m</mi>\n </mrow>\n <annotation>$\\umu {\\rm {m}}$</annotation>\n </semantics></math> after 1 day and reaching 3.04 <math>\n <semantics>\n <mrow>\n <mi>μ</mi>\n <mi>m</mi>\n </mrow>\n <annotation>$\\umu {\\rm {m}}$</annotation>\n </semantics></math> after 28 days. However, for older specimens, the measurement of the C-S-H layer was not feasible due to limited pore space and clinker grains.","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":null,"pages":null},"PeriodicalIF":16.4000,"publicationDate":"2024-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jmi.13283","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/jmi.13283","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

To accurately simulate the hydration process of cementitious materials, understanding the growth rate of C-S-H layers around clinker grains is crucial. Nonetheless, the thickness of the hydrate layer shows substantial variation around individual grains, depending on their surrounding. Consequently, it is not feasible to measure hydrate layers manually in a reliable and reproducible manner. To address this challenge, a software has been developed to statistically determine the C-S-H thickness, requiring minimal manual interventions for thresholding and for setting limits like particle size or circularity.

This study presents a tool, which automatically identifies suitable clinker grains and and perform statistical measurements of their hydrate layer up to a specimen age of 28 days. The findings reveal a significant increase in the C-S-H layer, starting from 0.45 $μ m$ after 1 day and reaching 3.04 $μ m$ after 28 days. However, for older specimens, the measurement of the C-S-H layer was not feasible due to limited pore space and clinker grains.

Abstract Image

查看原文本刊更多论文

利用 SEM-BSE 图像确定熟料颗粒周围水合物层厚度的 Python 工具。

要准确模拟胶凝材料的水化过程，了解熟料颗粒周围 C-S-H 层的生长速度至关重要。然而，水合物层的厚度会因颗粒周围环境的不同而有很大差异。因此，以可靠和可重复的方式手动测量水合物层是不可行的。为了应对这一挑战，我们开发了一款软件，用于统计确定 C-S-H 厚度，只需少量人工干预阈值和设置粒度或圆度等限制。本研究介绍了一种工具，它能自动识别合适的熟料颗粒，并对其水合物层进行统计测量，直至试样龄期达到 28 天。研究结果显示，C-S-H 层明显增加，从 1 天后的 0.45 μ m $umu {rm {m}}$，到 28 天后的 3.04 μ m $umu {rm {m}}$。然而，对于较老的试样，由于有限的孔隙空间和熟料颗粒，C-S-H 层的测量是不可行的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.