The presentation attached at the end of this post was from Colin Jones.
(Refresh a few more times if the pptx is not shown properly. Either Google Doc viewer or Microsoft office viewer has some problems in some special zones of the Internet.)
Some cases shown in the presentation are from us. It is an interesting and overlapping area to be explored and we have been in this area for more than 20 years. More and more novel and interesting topics in this area have been discovered and we keep on widen their application potential in different engineering areas.

PS: there was a news that the EK Co. was merged to the RSK.
I went back several times to the EU but not to the UK again and it has been around 15 years.
Hope to travel again when the pandemic ends.

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” 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。”

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Since 2005


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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.

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Early research and latest advances on EK technique

Some papers on EK in early 1950s are available thanks to growing of book and issue digitization, the famous Project Ocean. Those papers are very interesting. Quite a lot of phenomena discovered in that early stage of research are still attractive up to now.
However, it seemed that research on EK had been suspended for a while. It may be because both mechanism and engineering application of EK are very complicated.

In the past decade, there were quite a lot of breakthroughs on EK technique. One among those was EKG materials, a new category of geosynthetics which provides corrosion proof electrode; another one was smart DC power supply.
Smart DC power supply is truly important and to some extent, it makes large scale application of EK possible. This is a key technique that tackles the challenge of power demand and energy consumption; and it is still evolving. This is a fruitful area to explore.

In 1950s publications, we can see some discussions on compressibility and consolidation effect after EK treatment. This is another interesting area that inspires completely new constitutive model, which may help understanding of not only consolidation issue but also mechanism of unsaturated soil.

Breakthroughs in this overlapping research area are very encouraging. Researchers on polymer, power supply, sensor, mathematics, mining are welcome to communicate and collaborate.




诸如research gate这样的平台可能带来一些变数,然而整个方向会迈向何处,很难说。 此间矛盾之处在于,没有同行评审的平台,可能让论文回归论文的本质:记录、分享和交流;但是,同行评审的缺失,使得信息的可信度存疑。
peer review本身并不是问题,问题在于其他地方,如 Frank Wilczek所述。

Frank Anthony Wilczek (/ˈwɪltʃɛk/;[2] born May 15, 1951) is an American theoretical physicist, mathematician and a Nobel laureate.

Could Einstein Get Published Today?

By –Frank Wilczek

The Foundation of the General Theory of Relativity ——by Albert Einstein’s , 1915
Continue reading “当堆砌文献成为流行的写作习惯”


Today’s news that Chang’e 5 landed on the moon and planning to bring a sample of lunar soil back, called to my memory of my time in Tsinghua.

As I remember this Chang’e mission started about 15 years ago, almost the same time that I started in Tsinghua. If you are not a soil mechanics expert, you may not be able to imagine how this mission could be linked to soil mechanics. Actually, at the very beginning of the Chang’e mission, we were involved. The first task was to estimate the response of soil to the reentry capsule when it landed as planned somewhere in Inner Mongolia. (The planned landing spot for Chang’e 5 this time is still in Inner Mongolia.) The second task was to build a test area in Beijing, modelling the soil in Inner Mongolia, so that some experiment could be carried out in Beijing instead of Inner Mongolia. During those time, discussion on lunar soil sampling project already began, it is about 15 years ago. Now, finally, we see this mission carried out.

To model soil that does not exist on the earth is difficult. Our focus is on the mechanical behaviours of soil so that to provide basis for design of sampling machine and lunar vehicle. Some of issues that need to be considered include low gravity (1/6 of earth), vacuum condition and dry condition. The issue of gravity is especially concerned, because it effects confining pressure so that effects the strength. And this issue effects design of some experiments . For example, when design a triaxial test, distribution of confining stress due to the size of soil sample is always neglected, but when the confining stress is very low, this kind of difference due to soil sample size may not be negligible.

Continue reading “他们说你是去了月球。。。”

Archaeological Study on Reinforced Soil for Hydraulic Engineering in Ancient China



这是一篇很有意思的文章,第一次听到是在一次土工合成材料会上,李老师做了一个报告,当时在座的Fumio Tatsuoka (龍岡 文夫) 教授也非常感兴趣。


Continue reading “Archaeological Study on Reinforced Soil for Hydraulic Engineering in Ancient China”