Join us

It is the first time that I put on a post to say “Hey! Join us, if you are interested in.”

We are doing amazing research here with incredible enthusiasm and broad interests.

There are tons of reasons that people choose to do research; it could be a hobby, or to make a living, or any reason you name it, but my favourite reason is always that you love it. If you love your job, then you will do it with passion and happiness. 996 is never a problem only if you love it. (Well, it doesn’t mean 996 in our team…I never advocate that. See the photo, people played badminton; and we should do it more later on.)

My interests include (but not limited to)

1. Impact of electricity on clay minerals

By applying electric voltage on clay minerals, we look at the variation of its mineral structure and engineering behaviours. This could be a scientific research on clay mineral level (chemical & micro level); it could also be linked to potential engineering application in the area of geotechnical and geoenvironmental engineering.

2. Soil remediation and ground water treatment

This is a research area on removal of pollutants from contaminated soil or protection of ground water. This research topic can be linked to EK technique as well. And another possibility is to use Fe-rich clay minerals as redox materials for ground water treatment.

3. Dewatering and consolidation

This topic is about removal of water from very fine-grained soil, like sludge, slurry, clay, etc. These kinds of materials have very low hydraulic conductivity, but electro-osmosis can be an effective method for dewatering and consolidation of them. We are looking at the challenges of this EO technique in large scale of application.

4. Geosynthetics

We are interested in application of geosynthetics.

1) Reinforcement, which is a very popular application for decades and lots of people from academy and industry are doing it.

2) Filtration and drainage. This topic is related to dewatering and consolidation. One of the special issues that we are especially interested in is the clogging problem of geotextiles. There are lot of things to do, include mechanism of clogging, update of manufacturing and design code, invention of novel types of geotextiles.

3) One more thing about geosynthetics, which is special for our research is EKG. This novel material presents a new category of geosynthetic and I’ve been staying in this topic for over decade.

5. Unsaturated soil, constitutive model and numerical modelling

We are carrying out this research partially also because of EK technique. When applying EK technique, it is related to unsaturated soil and suction. Therefore, we’ve been developing completely new constitutive model and trying to apply it in suction measurement, EK design and also trying to develop code for numerical modelling and software for EK design.

6. Mining, tailing, liquefaction, etc.

More researches that are related to my basic interests previously mentioned are being explored, we will see more ideas and fantastic work coming up.

So…welcome to join us…

And also, any collaboration is welcome.

Looking forward to hearing from you

Yan-feng Zhuang (zhuang@tsinghua.edu.cn)

这种话大概也就是得诺贝尔之后才有资格讲

很多观点,甚至做法,在真正的科学家中是有共识的;但是,并不是每个人都有资格去那么总结。

回想我自己的第一个模型,也是在等待一位朋友的间歇,在门外反复踱步的时候想出来的。当然,并不是那一刻,短短时间的思考之功,而是已经做了很长时间的研究了,那一刻突然想通了而已。这种体验,每个学者大概都会有。

” 在孩提时代,每个人都拥有着许多种可能性。你既可能成为职业棒球选手,也可能成为歌剧演唱家。但是,到了二十岁左右,我们就知道了自己的局限,就会因种种原因而将各种可能性自行消去,同时也会追问自己到底想做什么。无论是谁,都要过这一关。此时,你只能严肃认真地对各种可能性加以权衡,选择自己想做的事、擅长做的事。”
这一段,正和我前几天写专业选择时所想到的一样,实际上越往后,知识、经验越多,但是可能性越少,我们没有办法进入所有领域,所以,年轻时的选择非常重要。另外,我们无法成为所有领域的专家,但我们在精进一门的同时,完全可以涉猎尽可能多的领域,这能保持科研生涯的idea永不枯竭。而且,当你写完相对论的时候玩玩小提琴,画完鸡蛋之后画画人体解剖图,这不也蛮好吗?

日本医学家,2018年诺贝尔生理学或医学奖获得者本庶佑
本庶佑:真正一流的工作往往没有在顶级刊物上发表
Read ↓↓↓more

重阳

“人生易老天难老,岁岁重阳。今又重阳”(《采桑子·重阳》,毛泽东)

我已很久没写了,诗心已共灵心去;也就去年写了几首,也没见写多好。
恍然间,重阳又将近。

自古 “哀声易好,欢词难工”,(原:“和平之音淡薄,而愁思之声要妙;欢愉之词难工,而穷苦之言易好也。” ,《荆潭唱和诗序》 , 唐,韩愈 ),才有“赋到沧桑词便工”(《 题遗山诗 》,清, 赵翼 )

鹊桥仙  重阳
【唐】 。。。
春波渐冷,重阳又近,岁岁物华暗换。楼阁寂寞旧时窗,正窗外,残英散漫。
桂枝香杳,梧桐叶落,一任秋风吹散。离合终是不由人,挽不住,轻舟离岸。


Double Ninth 14th Oct. 2020
↓↓↓Read more

土木工程

现在的网络和以前很不一样了,以前写什么,对不对,大家回帖讨论一下就算了,现在任何一个观点都可能不知何时被无限放大,所以像以前那样的写作氛围没有了,想写点什么都很犹豫。今年听说一些传统行业的专业不是很受欢迎,当时就想写点,可也一直没写。

选择专业,在刚高考完的那个年纪,最重要的考量是什么?应该是多大程度上所学的能够参于到未来几十年的重要领域的进展中去。从这个角度,行业艰不艰苦,就业情况,有时不一定是第一考量。

人类知识的不断积累,和个体生命长度的有限,使得人类文明的传承不得不使用分工合作的办法,于是才有了分专业,每个人传承发展一部分知识。这种情况下,选了专业意味着与很大一部分其它领域的知识擦肩而过了,确实应该好好选择。

其它的专业不知道,就岩土来说,其实是有机会参于到未来的重要领域的。人离不开大地,哪怕上了天,也要寻找另一片土地落脚🦶。去年登月取样成功时就写过一篇,当时英文写的,登月,火星,这应该是非常有未来参于感的领域了。我们研究那里的土。

Since 2005

相对于其它材料,土体是很复杂的材料,可研究的角度也多,矿物成份,环境,植物生长。。。土体的各种现象,其实不仅限于力学、打地基、盖房子。很有机会探寻新的主题,并且对赖以生存的大地的研究,也会是任一时代都不过时的题材。

↓↓↓Read more

Video Streaming & Thunder, VanDyke, NetAnts, etc.

How long haven’t you used Thunder? It was so popular on PC, like Tencent. Tencent is still there, while Thunder is gone. Now most on line videos are provided in streaming way.

FFMPEG.exe is a tool to download them. It runs in command line:
ffmpeg -i http://***/***.m3u8 “***.mp4”
And there is a better tool to do such streaming, which is N_m3u8DL-CLI_v2.9.7.exe

How to find the streaming address? Press F12 when you watch video via browser; locate “network” and search for “m3u8”
By this way, you are able to download most videos as long as you are able to watch them in your browser.

While sometimes, there is inhibition for you to complete full streaming, then you need to merge the “.ts” files by yourself.
Way 1
copy /b *.*    output.mp4
Way 2
DIR *.*  /B >filelist.txt
Open filelist.txt using Excel; insert one column before the column of file name; save as txt.
ffmpeg -f concat -safe 0 -i filelist.txt -c copy output.mp4

↓↓↓Read more

Smart DC Power Supply and Roll Polling Program

The first EKG (E-board) in China:

Zhuang, Y.F., Zou, W., Wang, Z., Tan, X., Hu, P., Hu, S., Yan, Y., Wang, Y., 2012. Electrically conductive PVD. Chinese Patent. Grant Number: ZL201210197981.4.

The first field trial using E-board in China:

Zhuang, Y.F., Huang, Y., Liu, F., Zou, W., Li, Z., 2014. Case study on hydraulic reclaimed sludge consolidation using electrokinetic geosynthetics. In: 10th International Conference on Geosynthetics. DGGT, Berlin, Germany.

After the field trial, it was found that power requirement, instead of energy consumption, is the biggest challenge for field application using electro-osmosis. And I believe this is the case for most applications using electrokinetic technique in Geo.

Zhuang, Y.F., 2015. Challenges of electro-osmotic consolidation in large scale application. In: Conference of Geosynthetics 2015. IFAI, Portland, Oregon, USA, pp. 447–449.

Therefore, I have been focusing on Smart DC Power Source and looking for a way to reduce both power requirement and energy consumption. Roll Polling Program seems to be a solution. It reduces the requirement of current intensity to 1/3; it also decreases the energy consumption to less than 1 kW⋅h/m3. Following contents are direct quote from the publication:

Zhuang, Y.F., 2021. Large scale soft ground consolidation using electrokinetic geosynthetics. Geotext. Geomembranes 49 (2021) 757–770.

↓↓↓Read more

生死平衡

这是王晋康早年的作品,常常在讲丝绸之路的部分时会提及这篇,年代久远,故事细节已经模糊了,但是当时阅读感觉这个作者很有思想(后来看到许多医学专业的对此文的一些批判,或者说有争议)。

书籍是人类进步的阶梯,电子书却不见得是人类进步的电梯,实际上我们已经多久没有好好读一本书了?这不是说指尖上的世界不好,而是我们需要更加有耐心的阅读。

Read ↓↓↓ more

Painting Art & Transportation

作者:杨柳

(内容节选,报告全文内容链接附后)

Vincent Willem van Gogh, 1853.3.30-1890.7.29

此作为梵高生前最后一年的作品, 描绘了法国瓦兹河畔的田园风光。一望无尽的原野被各种作物分割成一个个不同的色块,近景处的房屋被施以明亮的色彩,和远处地平线上青黑色的蒸汽机车形成鲜明对比。马车行驶在 画面中部的乡间小路上,远处是喷吐着阵阵浓白色烟雾的燃煤机车,两种交通工具既对立又统一,和谐地存在于同一幅画作中,这也是那个年代特有的属于交通的有趣场场景。画家在传统的描绘田园风光的场景画中,火车这一并不十分和谐的元素非但没有选择忽略,反而将其作为远景呈现的重要组成部分,这既是艺术上的创新,也反映了那个时代下铁路运输己经深入到了生活中的方方面面, 成为了 种寻常的交通工具。

链接

从绘画浅谈交通运输的发展

Life and City Memories on Transportation

作者:刘源

(内容节选,报告全文内容链接附后)

靠在轻轨的座椅上,我依然会忍不住地想,今天的我又没能做到最好,明天的事却己接踵而至。我有时 透过列车头的前窗看着前方的轨道,真切地问自己。。。
步行,自行车,电动车,公交车, 轻轨,我出行工具的每 次更迭都代表着我学生阶段的一次进阶。它们带给我的,不仅仅是便利,更是我成长时的心路历程,长足回忆。

链接

交通工具上的人生与城市记忆

人工智能之机器翻译

Vorwort der Orchideen-Pavillon-Sammlung

朋友发来了两张图问这是什么,为此做了一点翻译,主要解释了一下Vorwort der Orchideen-Pavillon-Sammlung 和 schwimmender Weinkelch im geschwungenen Wasser,然后发现机器翻译已经很强大了。我已经不是第一次发现机器翻译的进步,尤其是近十来年,外出走走的时候还蛮多,主要靠英语,但去的地方又不尽是英语——要想学会所有语言,也不现实吧?

↓↓↓Read more