Department of Engineering / Profiles / Dr Renjie Mi,

Department of Engineering

Dr Renjie Mi, PhD, AFHEA

rm2175

Renjie Mi,

Marie Sklodowska-Curie Actions (MSCA) Fellow

Academic Division: Civil Engineering

Research group: Geotechnical and Environmental

Email: rm2175@cam.ac.uk

Personal website

Publications

Research interests

Dr Mi’s research interest is the net-zero design of concrete structures by carbonation modelling, developing carbon sequestration technology and carbon calculation. He has published nearly 50 peer-reviewed papers with over 1,200 citations and received four relevant research grants as a PI, totalling ~£225,000. His current Europe Horizon Marie Skłodowska-Curie Actions proposal received a total score of 97.2%. He was an editor of the sixth FRP-SSC Workshop proceedings and a guest editor of a journal special issue.

Some representative journal papers are as follows.

  1. Renjie Mi*, Ganghua Pan, Feifei Zhou, 2025. Does carbonation affect the microstructural inhomogeneity of recycled aggregate concrete? Journal of Building Engineering, 99, 111650. DOI: https://doi.org/10.1016/j.jobe.2024.111650. 
  2. Yongshan Tan, Shichang Liu, Mithila Achintha, Renjie Mi*, 2024. Is it possible to make magnesia-based cement environmentally friendly? ACS Sustainable Chemistry & Engineering, 12, 16869−16883. DOI: https://pubs.acs.org/doi/10.1021/acssuschemeng.4c05985.
  3. Yongshan Tan, Dingyi Yang, Gen Li, Renjie Mi*, 2024. Chromium immobilization in basic magnesium sulfate cement: Experimental and density functional theory studies, Construction and Building Materials, 428, 136322. DOI: https://doi.org/10.1016/j.conbuildmat.2024.136322. (Q1)
  4. Yonggang Yao, Shuang Wu, Xujiang Wang, Ziliang Zhang, Renjie Mi, Zhijuan Hu, Zengmei Wang, Wenlong Wang, 2024. Regulation of mineral formation of iron-rich calcium sulfoaluminate clinker by controlling SO3 and Fe2O3 contents, Cement and Concrete Research, 180, 107497. DOI: https://doi.org/10.1016/j.cemconres.2024.107497. (Q1)
  5. Shizhao Yang, Xujiang Wang, Jingwei Li, Xingliang Yao, Renjie Mi, Jianyong Wang, Zhijuan Hu, Yuzhong Li, Hongqiang Liao, Wenlong Wang, 2024. A hierarchical strengthening path for chemical foaming: The transformation toward sustainable high-performance foamed material derived from solid waste, ACS Sustainable Chemistry & Engineering, 12, 8792−8805. DOI: https://pubs.acs.org/doi/10.1021/acssuschemeng.4c01694. (Q1)
  6. Renjie Mi*, Yifei Wang, Tao Yu, Wengui Li, 2023. Effects of carbon-sequestering coral aggregate on pore structures and compressive strength of concrete, Low-carbon Materials and Green Construction 1(1), 21. DOI: https://doi.org/10.1007/s44242-023-00024-4.
  7. Renjie Mi, Tao Yu, Chi Sun Poon, 2023. Feasibility of utilising porous aggregates for carbon sequestration in concrete, Environmental Research, 228, 115924. DOI: https://doi.org/10.1016/j.envres.2023.115924. 
  8. Renjie Mi, Zhibin Zhang, Weiming Ji, Shichang Liu, Minfeng Kai, Kui Lin, Yongshan Tan, 2023. Solidification/stabilisation behaviours of Zn2+ in magnesium potassium phosphate cement: Experiments and density functional theory study, Environmental Research, 231, 116247. DOI: https://doi.org/10.1016/j.envres.2023.116247. 
  9. Renjie Mi, Kim Meow Liew, Ganghua Pan, 2022. New insights into diffusion and reaction of CO2 gas in recycled aggregate concrete, Cement and Concrete Composites, 129, 104486. DOI: https://doi.org/10.1016/j.cemconcomp.2022.104486. 
  10. Renjie Mi, Ganghua Pan, 2022. Inhomogeneities of carbonation depth distributions in recycled aggregate concretes: a visualisation and quantification study, Construction and Building Materials, 330, 127300. DOI: https://doi.org/10.1016/j.conbuildmat.2022.127300. 
  11. Renjie Mi, Ganghua Pan, 2022. Slowing down CO2 effective diffusion speeds in recycled aggregate concrete by using carbon capture technology and high-quality recycled aggregate, Journal of Building Engineering, 45, 103628. DOI: https://doi.org/10.1016/j.jobe.2021.103628. 
  12. Feifei Zhou, Ganghua Pan, Haining Meng, Renjie Mi, 2022. Effect of secondary curing on the performance of microwave cured concrete, Construction and Building Materials, 330, 127256. DOI: https://doi.org/10.1016/j.conbuildmat.2022.127256. 
  13. Renjie Mi, Kim Meow Liew, Ganghua Pan, Tong Kuang, 2021. Carbonation resistance study and inhomogeneity evolution of recycled aggregate concretes under loading effects, Cement and Concrete Composites, 118, 103916. DOI: https://doi.org/10.1016/j.cemconcomp.2020.103916. 
  14. Renjie Mi, Ganghua Pan, Yang Li, Tong Kuang, 2021. Carbonation degree evaluation of recycled aggregate concrete using carbonation zone widths, Journal of CO2 Utilization, 43, 101366. DOI: https://doi.org/10.1016/j.jcou.2020.101366. 
  15. Renjie Mi, Ganghua Pan, Tong Kuang, 2021. Reducing carbonation zone and steel corrosion zone widths of recycled aggregate concrete through optimizing its mixing process, Journal of Materials in Civil Engineering, 33(5), 04021061. DOI: https://doi.org/10.1061/(ASCE)MT.1943-5533.0003672. 
  16. Renjie Mi, Ganghua Pan, Kim Meow Liew, 2021. Predicting carbonation service life of reinforced concrete beams reflecting distribution of carbonation zones, Construction and Building Materials, 255, 119367. DOI: https://doi.org/10.1016/j.conbuildmat.2020.119367. 
  17. Bo Da, Hongfa Yu, Haiyan Ma, Renjie Mi, Zhangyu Wu, 2021. Influence of concrete strength to the flexural behavior of coral aggregate concrete beam, Journal of Basic Science and Engineering, 29(02), 450-458. DOI: 10.16058/j.issn.1005-0930.2021.02.017.
  18. Feifei Zhou, Ganghua Pan, Renjie Mi, Mimi Zhan, Jiufu Zhang, 2021. Improving the properties of concrete using in situ-grown C-S-H, Construction and Building Materials, 276, 122214. DOI: https://doi.org/10.1016/j.conbuildmat.2020.122214. 
  19. Renjie Mi, Ganghua Pan, Kim Meow Liew, Tong Kuang, 2020. Utilizing recycled aggregate concrete in sustainable construction for a required compressive strength ratio, Journal of Cleaner Production, 276, 124249. DOI: https://doi.org/10.1016/j.jclepro.2020.124249. 
  20. Mimi Zhan, Ganghua Pan, Feifei Zhou, Renjie Mi, S.P. Shah, 2020. In situ-grown carbon nanotubes enhanced cement-based materials with multifunctionality, Cement and Concrete Composites, 108, 103518. DOI: https://doi.org/10.1016/j.cemconcomp.2020.103518. 
  21. Renjie Mi, Ganghua Pan, Yang Li, 2020. Effects of admixture on properties of recycled aggregate mortar, Journal of Southeast University (English Edition), 36 (3), 322-327. DOI: 10.3969/j.issn.1003-7985.2020.03.010.
  22. Renjie Mi, Ganghua Pan, 2020. Research progress in carbonation resistance of recycled aggregate concrete, Journal of Harbin Engineering University, 41(3), 473-480. DOI: 10.11990/jheu.201810082.
  23. Renjie Mi, Ganghua Pan, Yang Li, Tong Kuang, Xiaojun Lu, 2019. Distinguishing between new and old mortars in recycled aggregate concrete under carbonation using iron oxide red, Construction and Building Materials, 222, 601-609. DOI: https://doi.org/10.1016/j.conbuildmat.2019.06.171.
  24. Renjie Mi, Ganghua Pan, Qizhen Shen, 2019. Carbonation modelling for cement-based materials considering influences of aggregate and interfacial transition zone, Construction and Building Materials, 229, 116925. DOI: https://doi.org/10.1016/j.conbuildmat.2019.116925. 
  25. Bo Da, Hongfa Yu, Haiyan Ma, Da Chen, Senlin Li, Renjie Mi, Zhangyu Wu, 2019. Influence of reinforcement ratio to flexural behavior of coral aggregate reinforced concrete beam, Journal of Building Structures, 41(6), 143-148. DOI: 10.14006/j.jzjgxb.2018.0399.
  26. Bo Da, Hongfa Yu, Haiyan Ma, Renjie Mi, Zhangyu Wu, 2019. Flexural behavior of C60 coral aggregate reinforced concrete beam, Journal of Southeast University (Natural Science Edition), 49(4), 727-735. DOI: 10.3969/j.issn.1001-0505.2019.04.016.
  27. Hongfa Yu, Bo Da, Haiyan Ma, Haiwei Zhu, Renjie Mi, 2019. Mechanical behavior and durability of coral aggregate seawater concrete and its beam-column member, Journal of Building Materials, 22(6), 993-998. DOI: 10.3969/j.issn.1007-9629.2019.06.023.
  28. Renjie Mi, Ganghua Pan, Yang Li, 2018. Effects of admixtures and intensified aggregates on drying shrinkage of recycled aggregate mortars, Journal of Southeast University (Natural Science Edition), 48(2), 363-367. DOI: 10.3969/j.issn.1001-0505.2018.02.027.
  29. Renjie Mi, Ganghua Pan, Yang Li, Xiaojun Lu, 2018. Mathematical models for properties of mortars with admixtures and recycled fine aggregates from demolished concretes, Journal of Southeast University (English Edition), 34(3), 371-376. DOI: 10.3969/j.issn.1003-7985.2018.03.013.
  30. Yongshan Tan, Hongfa Yu, Renjie Mi, Yan Zhang, 2018. Compressive strength evaluation of coral aggregate seawater concrete (CAC) by non-destructive techniques, Engineering Structures, 176, 293-302. DOI: https://doi.org/10.1016/j.engstruct.2018.08.104. 
  31. Bo Da, Hongfa Yu, Haiyan Ma, Yadong Zhang, Yinfeng Yuan, Qiang Yu, Yongshan Tan, Renjie Mi, 2017. Experimental research on whole stress-strain curves of coral aggregate seawater concrete under uniaxial compression, Journal of Building Structures, 38(1), 144-151. DOI: 10.14006/j.jzjgxb.2017.01.016.
  32. Bo Da, Hongfa Yu, Haiyan Ma, Yongshan Tan, Renjie Mi, Xuemei Dou, 2016. Chloride diffusion study of coral concrete in a marine environment, Construction and Building Materials, 123, 47-58. DOI: https://doi.org/10.1016/j.conbuildmat.2016.06.135. 
  33. Bo Da, Hongfa Yu, Haiyan Ma, Yongshan Tan, Renjie Mi, Xuemei Dou, 2016. Experimental investigation of whole stress-strain curves of coral concrete, Construction and Building Materials, 122, 81-89. DOI: https://doi.org/10.1016/j.conbuildmat.2016.06.064. 
  34. Bo Da, Hongfa Yu, Haiyan Ma, Yadong Zhang, Yongshan Tan, Renjie Mi, Xuemei Dou, 2016. Surface free chloride concentration and apparent chloride diffusion coefficient of coral seawater concrete, Journal of Southeast University (Natural Science Edition), 46(5), 1093-1097. DOI: 10.3969/j.issn.1001-0505.2016.05.033.

Teaching activity

Dr Mi is an Associate Fellow of the Higher Education Academy in the UK. He has multiple teaching experiences in higher education as a workshop lecturer, teaching assistant, summer school teacher, and supervisor, transferring his knowledge to undergraduates and postgraduates. His current teaching roles at the University of Cambridge are as follows. 

1. Teaching Assistant at the Department of Engineering

  • IA Elastic Beams
  • IA Dimensional Analysis 
  • IA Statics
  • IB Integrated Coursework A2

2. Undergraduate Supervisor 

  • 3D3 Structural materials and design

Other positions

Dr Mi also actively serves as a member of RILEM technical committees (e.g., 281-CCC) and ACF technical committee (e.g., DCS), and is an invited reviewer for journals (e.g., CCC and JCC). He was an organising committee member of the Sixth FRP-SSC Workshop and a session chair of the Seventh International Young Scholars Forum. 

Biography

Renjie Mi is an MSCA Individual Fellow at the University of Cambridge. He obtained his PhD at the City University of Hong Kong in 2021. Before joining the University of Cambridge in 2023, he was a Postdoctoral Fellow at the Hong Kong Polytechnic University.

Department role and responsibilities