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2025
Preethi Sompalli's master thesis defense
Preethi Sompalli successfully defended her master's thesis on 21st August 2025. The topic of her thesis is "The Impact of Municipal Solid Waste Incineration Bottom Ash on the Rheology of Slag-Based Alkali-Activated Material for 3D Printing".
Abdellah Hussein's master thesis defense
Abdellah Hussein successfully defended his master's thesis on 7th July 2025. The topic of his thesis is " Development of Alkali-Activated Concrete Incorporating Carbonated Wood Biomass Fly Ash as a Sustainable Precursor".
1st TU Delft ASHCYCLE workshop
On 4th July 2025, an internal workshop was held to share and discuss some results from the ASHCYCLE team in TU Delft. During this event, 4 researchers from both the CMMB group and Concrete structure group presented their work in the project.
Luiz Miranda de Lima's doctoral thesis defense
Luiz Miranda de Lima successfully defended his doctoral thesis on 13th June 2025. The topic of his thesis is " Temperature-chemistry-microstructure Correlations for Alkali-activated Binders".
RILEM symposium: Alkali-activated Concrete From Design and Materials Properties to Structural Behavior and Engineering Application
On 13th May 2025, a symposium was held to conclude and disseminate outputs from RILEM TC 294-MPA. 10 delegates from academia, industry and standardization organizations shared their insights into current applications and future challenges of alkali-activated concrete.
1st RILEM Alkali-activated Materials (AAM) PhD training course
From 12th to 16th May 2025, RILEM Technical Committee 294-MPA (Mechanical Properties of Alkali-Activated Materials) successfully organized a dynamic and enriching one-week training course in TU Delft. With 41 participants from research institutes and industry across Europe and beyond, the course offered an in-depth exploration of AAC—ranging from chemistry and fresh/mechanical properties to real-world applications, standardization, and structural behavior. In 2026, the updated version of the course will be held at Karlsruher Institut für Technologie (KIT), Germany.
2024
Sakshi Singh's master thesis defense
Sakshi Singh successfully defended her master's thesis on 18th December 2024. The topic of her thesis is "Alkali-activated Slag Concrete Incorporated with Recycled Concrete Aggregates - Mix Design & Performance Assessment".
Yun Chen's doctoral thesis defense
Yun Chen successfully defended her doctoral thesis on 13th December 2024. The topic of her thesis is " Thermodynamics, Reaction Kinetics, and Microstructure of Alkali-Activated Fly Ash - An experimental and modeling study".
Xuhui Liang's doctoral thesis defense
Xuhui Liang successfully defended his doctoral thesis on 5th December 2024. The topic of his thesis is " Valorization of Wood Biomass Fly Ash for the Development of Sustainable Low-carbon Cementitious Materials".
Sep Hesselmans's master thesis defense
Sep Hesselman successfully defended his master's thesis on 14th November 2024. The topic of his thesis is "A Study on the Use of Aluminum Etching Solution as Alkali Activator".
On November 21, during the Betonevents, winners of the Concrete Award were announced. The Geopolymer Concrete Bridge in Hoogvliet, which we developed on behalf of the Municipality of Rotterdam and in close collaboration with TU Delft researchers, was awarded the 2024 Concrete Award in the sustainable construction category. A heartfelt congratulations to Prof. Ye and Dr. Hua Dong for this outstanding achievement and contribution to a greener future!
Dr. Guang Ye has been promoted as Professor in Advanced Construction Materials at TU Delft
Dr. Guang Ye has been awarded the title of RILEM fellow
Maria Erica Biagini's master thesis defense
Maria Erica Biagini successfully defended her master's thesis on 23th August 2024. The topic of her thesis is "Immobilization of heavy metals in hazardous fly ashes".
Our lab-developed geopolymer concrete mix has been transitioned to industrial production!
Supported by Gemeete Groningen, our group members have successfully developed geopolymer concrete products used in quay walls. Congratulations to Prof. Guang Ye and Dr. Boyu Chen for this outstanding achievement!
Albina Kostiuchenko's doctoral thesis defense
Albina Kostiuchenko successfully defended her doctoral thesis on 18th June 2024. The topic of her thesis is "Creep of alkali-activated slag and fly ash concrete: Unveiling multiscale dynamics".
Our previous colleague, Dr. Zhenming Li, received the 2024 Gustavo Colonnetti Medal from RILEM.
Christa Winterman's master thesis defense
Christa Winterman successfully defended her master's thesis on 29th January 2024. The topic of her thesis is "Understanding the Drying Shrinkage Mechanism of Alkali-Activated Binders".
2021
The Microdurability 2020 conference is successfully held online from 29th April to 25th May. The proceedings now are available to download.
New members joined CMMB group
Guilherme Munhoz and Yu Zeng joined as PhD researchers in April. They will work on MSCA-ITN-SUBLime project.
Hu Shi joined our group as a visiting scholar. He is a PhD candidate at Nanjing Tech University since 2018. He will work on the application of biomass fly ash in autoclaved aerated concrete and gypsum plaster.
Structural application of geopolymer in Friesland
The Province of Friesland intends to replace the bridge deck of an existing car bridge with a bridge deck of geopolymer concrete. With almost a year’s research and experiment by Shizhe Zhang, eight full bridge girders of geopolymer concrete are successfully casted. If the material and construction tests yield positive results, the province of Friesland wants to use this type of girder next year to replace a car bridge at Metselawier. Detailed report can be found here.
Timo Dijkstra master thesis denfence
Timo has successfully defended his master thesis on 5th November 2021. The topic of his thesis is alkali-activated salg concrete railway sleeper: an experimental design approach.
2020
MicroDurability 2020 Webinar 02-10-2020
A pre-conference webinar for MicroDurability 2020 will be organized on 12-13 October 2020. To get more information and register, please visit MicroDurability 2020 homepage.
New visiting researcher joined CMMB group 01-10-2019
Xingliang Yao, PhD researcher, Shandong University, China
Kosuke Handa, PhD researcher, Kajima Construction Co. Ltd, Japan
Highlight
Highlight
Solid progress in sustainable concrete
Solid progress in sustainable concrete
Its hardness and solidity make concrete a much-used building material. One of the most important ingredients of concrete is cement. Unfortunately, cement production comes with high levels of harmful CO2 emissions. That is why TU Delft researcher Guang Ye is looking for alternative binders such as pulverised household and building waste to reduce the impact on the environment. Ye and his team of colleagues and students intend to develop the most sustainable concrete in the world. For more information, click here.
Rotterdam has an innovative bank. In collaboration with TU Delft, the municipality of Rotterdam has succeeded in building seating furniture made from 'green' geopolymeric concrete.
The bench is located on GJ de Jonghweg and was conceived and designed together with students and employees of TU Delft. The material is unique to the furniture. The so-called geopolymer concrete uses an alternative 'green' binder instead of standard cement. The new binder is very similar to ordinary concrete, but much less CO2 is released during its production.
Pride People from all over the world are looking for ways to apply this concrete, says Kees Blom, senior civil engineering consultant at the engineering office of the municipality of Rotterdam. “Innovation in our branch of sport is not something that only happens with the government or with a market party. You desperately need each other and in this case a knowledge institution. We can invest in initially 'hopeless' innovation, but look at what comes out here. The municipality of Rotterdam has funded this project and the students have given hands to the plan. I am very proud of this and foresee a great future. "
Guang Ye and Mladena Lukovic of TU Delft think the same about this: “Many new“ concrete-like ”materials are being developed in TU Delft's laboratories, but their application in society is always a quest. Thanks to the support of the municipality of Rotterdam, it has now been applied in this concrete bank. With the knowledge and experience gained, we can now take the next step in scale, for example a small bridge. ”
July 22th, 2016: Our geopolymer canoe returns to highlight again - story covered by the Journal of Civilie Technique
July 22th, 2016, One of the most prestigious journal for civil engineering in the Netherlands The Journal of Civilie Technique reported the whole story of our cement free geopolymer concrete canoe! For more information, click here.
June 2, 2016: Exhibition preview pitches best TU Delft research to businesses
June 2, 2016: Exhibition preview pitches best TU Delft research to businesses
One of our current running reserach project "Long-term performance of geopolymer concrete systems for production of environment friendly building materials – GeoCon" has been selected from a total of 128 projects as one of the 20 highlight projects on TU Delft Research Exhibition held on June 2, 2016. Core member within this projects (Marija Nedeljkovic, Kamel Arbi, Yibing Zuo with Guang Ye) are sharing knowlege and experties to more than 500 hundred people from industry for a more sustainable future. A story is reported here.
For the complete poster of our project, download here.
May 28, 2016: A cement free canoe, made of fiber reinforced geopolymer concrete
May 28, 2016: A cement free canoe, made of fiber reinforced geopolymer concrete
The canoe is made of geopolymer concrete, also known as cement free concrete. This relatively new material with concrete-like properties uses only industrial by-products as binder instead of the traditional Ordinary Portland Cement (OPC). This makes geopolymer concrete a sustainable alternative to traditional concrete. The complete story of preparation and testing of the geopolymer canoe can be found here. Innovative as it is, the Jounal "Innovatieve materialen" issue IM1603 also reported this story from pp 19-21, a electric version of this issue can be view here.The story is also covered by the Journal of Civilie Technique as Primeur voor geopolymeren: Betonkano zonder cement.
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