Despite the Covid‐19 pandemic, 2020 was a successful year for Structural Concrete. The Impact Factor increased up to 2.174 and the number of paper submissions amounted to 835, compared to 587 in 2019. I could manage this impressive number of paper submissions thanks to the support of Akio Kasuga, Deputy Editor‐in‐Chief, and Frank Dehn, David Fernandez‐Ordoñez and Tamon Ueda, the three Associate Editors‐in‐Chief.

Since some time already, we are faced with a substantial backlog for SC, which means an increasing number of papers that are available in early view online, but not printed yet in an issue. We have discussed this matter with Wiley, and we came to the solution of an online supplemental issue, which will be designated as 1S and which will only be available online. This issue could be the first step in a gradual transition to fully online publishing, which will probably take place in the coming years. For this special issue, we have selected 82 papers related to various material aspects such as recycled and special aggregates, geopolymer concrete, additions and admixtures, mechanical properties and durability.

For several years already, we see a significant increase in the number of full‐text article downloads, which amounted to 114,000 in 2020 or an increase by 65.8% for downloads via Wiley Online Library compared to 2019.

The increased number of submissions also means that the number of required reviews increased accordingly. My sincere thanks to all the reviewers for their valuable contribution to the review process. We will soon update the membership status of the Editorial Advisory Board, which consists of reviewers who performed a minimum number of reviews in the past year. Thanks to the efforts of our reviewers, the mean time between submission of a paper and the first decision could be reduced to 51 days in 2020, an improvement compared to 61 days in 2019.

We cordially invite you to stimulate your colleagues to submit high‐level papers to our journal and we especially welcome papers related to challenging concrete projects from your country. Writing a Short Project Note of 2 or 3 pages, really requires a very limited effort. And, don't forget to include papers published in Structural Concrete, in the reference list of your papers published in other journals.

OnlineOpen, Wiley's hybrid open access offering, grew from 4 articles in 2018 and 7 in 2019 to 31 articles in 2020. We hope to see continued growth in this area, supported by ongoing marketing campaigns to educate authors on the benefits and availability of open access publishing in Structural Concrete.

Finally, I would like to draw your attention to some online features which have been implemented for some time already:

– Early view (weblink), which allows you to see accepted papers in their final lay‐out before the printed version is available. The mean time between final acceptance and early view availability was 32 days in 2019 and the aim of the publisher is to reduce this time to 11 days in 2021.

– All previously published papers are available online for fib members and external subscribers at the Wiley Structural Concrete page and can also be reached from the fib website.

– The Structural Concrete app, which allows fib members to look up and browse the journal's articles, to subscribe to specific keywords and to get the latest news from the fib directly on your phone. The app is available both on GooglePlay and on AppStore.

Luc TaerweEditor‐in‐ChiefFellow fibEmeritus Full Professor at Ghent University, Ghent, BelgiumNational RPGE Chair Professor, Tongji University, Shanghai, China

尽管发生了Covid‐19大流行，但2020年对于结构混凝土仍然是成功的一年。影响因子增加到2.174，论文提交数量达到835，而2019年为587。在副总编辑Aks Kasuga和Frank Dehn的支持下，我可以处理如此令人印象深刻的论文提交数量，三位副主编DavidFernandez-Ordoñez和Tamon Ueda。

由于已经有一段时间了，我们面临着大量的SC待办事项，这意味着越来越多的文章可以在在线早期查看中使用，但尚未发行。我们已经与Wiley讨论了此事，然后我们找到了一个在线补充问题的解决方案，该问题被指定为1S，并且只能在线获得。这个问题可能是逐步过渡到完全在线发布的第一步，这可能会在未来几年发生。在本期特刊中，我们选择了82篇论文，涉及各种材料方面，例如再生和特殊集料，地质聚合物混凝土，添加物和外加剂，机械性能和耐久性。

已经有好几年了，我们看到全文文章的下载量显着增加，到2020年达到114,000，与2019年相比，通过Wiley Online Library的下载量增长了65.8％。

提交数量的增加也意味着所需审查的数量也相应增加。我衷心感谢所有审稿人对审稿工作的宝贵贡献。我们将尽快更新编辑咨询委员会的成员身份，该委员会由在过去一年中进行最少评论的评论者组成。得益于我们审稿人的努力，到2020年论文提交与做出第一个决定之间的平均时间可以减少到51天，而2019年为61天。

我们诚挚地邀请您激励您的同事向我们的期刊提交高水平的论文，尤其欢迎与您所在国家的具有挑战性的具体项目相关的论文。编写2到3页的简短项目笔记确实需要非常有限的努力。并且，别忘了在其他期刊上发表的论文的参考文献清单中包括在《结构混凝土》中发表的论文。

Wiley的混合开放访问产品OnlineOpen从2018年的4篇文章和2019年的7篇文章增长到2020年的31篇文章。我们希望看到这一领域的持续增长，并受到正在进行的营销活动的支持，以教育作者关于开放访问的好处和可用性的信息在结构混凝土中出版。

最后，我想提醒您注意已经实施了一段时间的一些在线功能：

–早期视图（网络链接），使您可以在印刷版可用之前以其最终版式查看接受的论文。从最终接受到提供早期视图的平均时间是2019年的32天，发布者的目标是将这一时间减少到2021年的11天。

–先前所有已发表的论文均可在Wiley结构混凝土页面上在线获取给fib成员和外部订户，也可以从fib网站上获得。

– Structural Concrete应用程序，允许fib成员查找和浏览期刊的文章，订阅特定的关键字，并直接从手机上获得来自fib的最新新闻。该应用程序可在GooglePlay和AppStore上使用。

Luc Taerwe总编辑，比利时根特大学fib荣誉退休教授，上海同济大学国家RPGE讲座教授