Updated on 2023/09/27

写真a

 
AILI Abudushalamu
 
Organization
Graduate School of Environmental Studies Department of Environmental Engineering and Architecture Building Structure and Construction Systems Assistant Professor
Graduate School
Graduate School of Environmental Studies
Undergraduate School
School of Engineering Architecture
Title
Assistant Professor
External link

Degree 3

  1. Doctor in Engineering ( 2017.10   Universite Paris-Est (France) ) 

  2. Master in material science ( 2012.6   Ecole des Ponts ParisTech ) 

  3. Bachelor in engineering ( 2009.7   Tsinghua University (China) ) 

Research Interests 8

  1. material analysis

  2. cement chemistry

  3. poromechanics

  4. multi-physical couplings

  5. multi-scale modeling

  6. コンクリート

  7. セメント化学

  8. 多孔体力学

Research Areas 1

  1. Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Building structures and materials  / Cementitious materials

Research History 6

  1. Nagoya University   Graduate School of Environmental Studies Department of Environmental Engineering and Architecture   Assistant Professor

    2023.4

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    Country:Japan

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  2. Nagoya University   Graduate School of Environmental Studies Department of Environmental Engineering and Architecture   Designated lecturer

    2021.5 - 2023.3

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    Country:Japan

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  3. Nagoya University   Graduate School of Environmental Studies Department of Environmental Engineering and Architecture   Designated assistant professor

    2019.11 - 2021.4

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    Country:Japan

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  4. Nagoya University   Graduate School of Environmental Studies Department of Environmental Engineering and Architecture   Researcher

    2018.4 - 2019.10

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    Country:Japan

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  5. Ecole des Pont ParisTech (France)

    2017.10 - 2018.3

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    Country:France

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  6. Ecole Polytechnique Fédérale de Lausanne   School of Architecture, Civil and Environmental Engineering   Research assistant

    2012.10 - 2014.1

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    Country:Switzerland

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Education 1

  1. Paris-Est University   Graduate School of Science, Engineering and Environment   Mechanics

    2014.9 - 2017.9

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    Notes: PhD

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Awards 2

  1. Outstanding paper

    2023.9   Journal of advanced concrete technology  

    Aili Abudushalamu, Maruyama Ippei, Vandamme Matthieu

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    Award type:Honored in official journal of a scientific society, scientific journal  Country:Japan

    The below paper was selected by the votes of the JACT Advisory Board and the Editorial Board as one of the outstanding papers of the year 2022.8-2023.7 in JACT.

    “Thermal expansion of cement paste at various relative humidities after long-term drying: experiments and modeling.” Abudushalamu Aili, Ippei Maruyama, Matthieu Vandamme, Journal of Advanced Concrete Technology, 2023, 21(3), 151-165.

  2. 1st place award in the Poromechanics Student Competition at the 6th Biot conference on Poromechanics

    2017.7   Engineering Mechanics Institute  

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Papers 18

  1. Impact of Aggregate–Cement Paste Reaction Forming Al-tobermorite on Ion Transport in Aged Concrete

    Abudushalamu Aili, Ippei Maruyama, Yoshito Umeki, Kazuhiro Yokokura

    Transport in Porous Media     2023.8

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    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    DOI: 10.1007/s11242-023-01998-2

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    Other Link: https://link.springer.com/article/10.1007/s11242-023-01998-2/fulltext.html

  2. STUDY ON DRYING SHRINKAGE PROPERTIES OF LOW HEAT PORTLAND CEMENT PASTE

    SEGAWA Miki, AILI Abudushalamu, MARUYAMA Ippei

    Cement Science and Concrete Technology   Vol. 76 ( 1 ) page: 153 - 161   2023.3

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    Language:Japanese   Publisher:Japan Cement Association  

    <p>In this study, mass changes and length changes were measured using ordinary Portland cement and low heat Portland cement to investigate drying shrinkage properties in hardened low heat Portland cement. The mass change-length change relationship can be approximated by two straight lines, with the changing point of slope corresponding to about 50% RH. From the change in the slope of the mass change-length change relationship, it can be inferred that only reversible drying shrinkage occurs in the low humidity range, while irreversible drying shrinkage occurs in addition to the reversible one in the high humidity range. The irreversible drying shrinkage of L is large, which we attribute to the larger amount of C-S-H per unit volume and smaller gel-space ratio which is deduced from the difference in Nitrogen sorption and portlandite amount. The C-S-H formed in L cement has larger interlayer space and at a more uniform state. Hence it is easier to make crosslinking between layers upon drying, resulting in higher irreversible shrinkage.</p>

    DOI: 10.14250/cement.76.153

    CiNii Research

  3. Thermal Expansion of Cement Paste at Various Relative Humidities after Long-term Drying: Experiments and Modeling

    Aili Abudushalamu, Maruyama Ippei, Vandamme Matthieu

    Journal of Advanced Concrete Technology   Vol. 21 ( 3 ) page: 151 - 165   2023.3

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    Language:English   Publisher:Japan Concrete Institute  

    <p>The coefficient of thermal expansion (CTE) of cement paste is an essential parameter for estimating cracks of cement-based structures, including under normal operating conditions. The CTE of low-heat Portland cement pastes dried for a long term at various relative humidities were measured by applying trapezoidal temperature history. The measured CTE was a convex function when displayed versus relative humidity and was highest at the relative humidity of 58%. At the relative humidity of 11%, the CTE was similar to the one of the fully dried sample. Based on a drying shrinkage model in the literature that classifies pore water as free liquid water and adsorbed water, we computed pore pressure change and corresponding strain, from which the CTEs were estimated. The microstructural rearrangements of cement paste due to long-term drying were taken into account by obtaining pore size distributions from water vapor sorption isotherm. The CTEs predicted with the model agree well with the measured ones.</p>

    DOI: 10.3151/jact.21.151

    CiNii Research

  4. On the long-term delayed strain of concrete structures

    Aili A., Torrenti J. M., Sellin J. P., Barthelemy J. F., Vandamme M.

    CEMENT AND CONCRETE RESEARCH   Vol. 165   2023.3

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    Publisher:Cement and Concrete Research  

    Creep and shrinkage of concrete are essential for the safety assessment of large civil engineering structures. The present paper presents two different approaches to predicting the delayed strain considering a single material point to represent the structure. The first one is a decoupled approach, such as design codes, that splits the delayed strain into four components and predicts each of them as a function of several parameters such as concrete strength. In the second approach, delayed strain is modeled as the viscoelastic response of concrete to applied external loads and/or internal hygric stresses. The advantages and inconveniences of both methods are discussed. In the end, delayed strains of concrete are predicted using these approaches for two examples of real structures: a prestressed concrete bridge and a mock-up of a biaxially prestressed containment building.

    DOI: 10.1016/j.cemconres.2022.107086

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  5. Comparison of shrinkage and mass change of hardened cement paste under gradual drying and rapid drying

    Miki Segawa, Abudushalamu Aili, Ippei Maruyama

    CEMENT   Vol. 10   page: 100047 - 100047   2022.12

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    Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.cement.2022.100047

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  6. Micro X-ray diffraction and elemental study on Al-tobermorite formation in aged modern concrete

    Aili Abudushalamu, Maruyama Ippei, Geng Guoqing, Umeki Shota, Sumitani Kazushi, Sawada Shohei, Ueda Shinya, Umeki Yoshito

    JOURNAL OF THE AMERICAN CERAMIC SOCIETY   Vol. 105 ( 11 ) page: 6924 - 6937   2022.11

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    Publisher:Journal of the American Ceramic Society  

    In modern Portland cement, calcium aluminum silicate hydrates (C-A-S-H) do not generally form crystalline Al-tobermorite. In this study, to identify the mechanism of Al-tobermorite formation, synchrotron micro X-ray diffraction and field-emission scanning electron microscopy-based energy-dispersive X-ray spectroscopy (EDS) investigations were performed on a slice of a thick concrete wall in a nuclear power plant, where the presence of Al-tobermorite was previously confirmed. Rietveld analysis of the diffraction diagrams obtained from the 2D diffraction patterns showed that Al-tobermorite was formed almost everywhere in the cement paste near sandstone aggregate and that Al-tobermorite platelets were distributed across most of the cement paste area in a random orientation. The basal spacing d-value of Al-tobermorite was identical and equal to 11.39 Å. The ratio plots from the EDS maps indicated that the chemical composition of the mixture of Al-tobermorite and C-A-S-H was almost homogeneous all around the cement paste. The Al-tobermorite in this concrete is probably formed via a dissolution–precipitation process. From the random orientation even next to the surface of aggregate, we infer that the Al-tobermorite formation does not need the surface of aggregate to precipitate.

    DOI: 10.1111/jace.18624

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  7. Time-dependent water vapor desorption isotherm model of hardened cement paste

    Rymes Jiri, Maruyama Ippei, Aili Abudushalamu

    CEMENT AND CONCRETE RESEARCH   Vol. 150   2021.12

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    Language:Japanese   Publisher:Cement and Concrete Research  

    This study aims to enhance moisture transport modeling by elucidating the so-called anomalous water diffusion in cementitious materials. Water desorption isotherms are measured from samples at various drying stages using techniques with different durations to quantify the impact of the drying duration on the water sorption ability. A single water sorption isotherm does not solely give a relationship between the water content and relative humidity but also represents the state of microstructure. The continuous evolution of a desorption isotherm due to drying-induced microstructural rearrangement is demonstrated. For numerical modeling, the microstructural alteration can be explicitly considered through a dynamic desorption isotherm model, which governs the local thermodynamic equilibrium at the capillary meniscus. This approach is implemented into a multiphase transport code, whose ability to predict drying is validated using literature data. Finally, the effect of prolonged drying on the colloidal nature of the calcium-silicate-hydrate gel is discussed.

    DOI: 10.1016/j.cemconres.2021.106612

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  8. The Relative Humidity Range for the Development of Irreversible Shrinkage in Hardened Cement Paste

    Maruyama Ippei, Kishi Naoya, Aili Abudushalamu

    JOURNAL OF ADVANCED CONCRETE TECHNOLOGY   Vol. 19 ( 6 ) page: 585 - 592   2021.6

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    Language:Japanese   Publisher:Journal of Advanced Concrete Technology  

    For better understanding of irreversible shrinkage, nine hardened cement paste (hcp) samples with three different cement types and three different water to cement ratio were prepared. Four different relative humidity conditioning histories containing the first desorption, re-humidification and the second desorption are investigated for all the specimens to obtain the length change and water sorption isotherms. The irreversible shrinkage strain was developed when the specimen was dried up to less than 80% relative humidity (RH), while other previous experiments in literatures showed that the shrinkage strain between 40% RH and 11% RH is reversible. It is concluded that the irreversible shrinkage strain is developed between 80% RH and 40% RH, which is also supported by the change in water vapor BET surface area of hardened cement paste after long-term drying.

    DOI: 10.3151/jact.19.585

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  9. Long-term use of modern Portland cement concrete: The impact of Al-tobermorite formation

    Maruyama Ippei, Rymes Jiri, Aili Abudushalamu, Sawada Shohei, Kontani Osamu, Ueda Shinya, Shimamoto Ryu

    MATERIALS & DESIGN   Vol. 198   2021.1

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    Language:Japanese   Publisher:Materials and Design  

    The distribution of compressive strength in thick concrete members exposed to various environments in a nuclear power plant undergoing decommissioning is investigated. X-ray diffraction data, scanning electron microscopy analysis, and chemical analysis data reveal that rock-forming minerals in the aggregate had reacted and portlandite had been consumed to form calcium alumino silicate hydrates (C-A-S-H) when evaporable water content was sufficient. In addition, the study confirms Al-tobermorite formation in modern concrete after 16.5 years of elevated temperature conditions ranging from 40 to 55 °C. It is concluded that an appropriate aggregate and binder combination for the concrete enhances the compressive strength of thick concrete members thanks to the reaction of rock-forming minerals with portlandite, and also strengthens the chemical stability through the formation of Al-tobermorite under elevated temperature conditions and sufficient evaporable water content.

    DOI: 10.1016/j.matdes.2020.109297

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  10. Review of Several Experimental Methods for Characterization of Micro- and Nano-Scale Pores in Cement-Based Material

    Aili Abudushalamu, Maruyama Ippei

    INTERNATIONAL JOURNAL OF CONCRETE STRUCTURES AND MATERIALS   Vol. 14 ( 1 )   2020.11

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    Language:Japanese   Publisher:International Journal of Concrete Structures and Materials  

    Mechanical properties and durability of cement-based materials are largely affected by pore structures. This paper provides an overview of several experimental techniques to characterize pore size distribution and specific surface area, with focus on pores in calcium silicate hydrates. The reviewed experimental techniques are nitrogen and water vapor sorption isotherm, proton nuclear magnetic resonance (1H-NMR) and small-angle scattering (SAS). Different pretreatment methods are compared for sorption measurements. Pore size distribution and specific surface area are analyzed using data from different methods to understand difference and consistency of these methods. It is found that pore size distribution calculated from sorption isotherm is very sensitive to adsorption model. Though specific surface areas from different techniques are quite different from each other, they are all able to detect the microstructural alteration due to long-term drying.

    DOI: 10.1186/s40069-020-00431-y

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  11. Modeling Long-term Delayed Strains of Prestressed Concrete with Real Temperature and Relative Humidity History

    Aili Abudushalamu, Torrenti Jean-Michel

    JOURNAL OF ADVANCED CONCRETE TECHNOLOGY   Vol. 18 ( 7 ) page: 396-408   2020.7

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.3151/jact.18.396

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  12. Creep behavior of C-S-H under different drying relative humidities: Interpretation of microindentation tests and sorption measurements by multi-scale analysis

    Suwanmaneechot Piyapong, Aili Abudushalamu, Maruyama Ippei

    CEMENT AND CONCRETE RESEARCH   Vol. 132   2020.6

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.cemconres.2020.106036

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  13. A viscoelastic poromechanical model for shrinkage and creep of concrete

    Abudushalamu Aili, Matthieu V, amme, Jean-Michel Torrenti, Benoit Masson

    Cement and Concrete Research   Vol. 129   page: 105970 - 105970   2020.3

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Elsevier {BV}  

    DOI: 10.1016/j.cemconres.2019.105970

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  14. Prediction of the delayed deformations of a nuclear power plant using MC2010 and new EC2 relations for concrete creep and shrinkage

    Torrenti J.M., Aili A.

    Proceedings of the fib Symposium 2020: Concrete Structures for Resilient Society     page: 773 - 780   2020

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    Language:Japanese   Publisher:Proceedings of the fib Symposium 2020: Concrete Structures for Resilient Society  

    The prediction of the delayed deformations of prestressed concrete structures like nuclear power plants (NPPs) is important in order to assess and/or extend the service life of such structures. It is also a safety concern because, in these structures, the prestressing is there to avoid tensile stresses and cracking in case of a severe accident (where an internal pressure is generated). In this paper, the relations proposed in MC2010 and in the future Eurocode 2 for the delayed strains (creep and shrinkage of concrete and relaxation of steel) are used to predict the behaviour of a NPP built 25 years ago. As proposed in the future Eurocode 2, the parameters of the relations giving the evolution of shrinkage and creep are fitted to measurements made on laboratory samples when the NPP was built. The influence of the temperature and of the relative humidity inside the containment are also taken into account. Finally, using the superposition principle in a biaxial context, the predicted delayed strains are compared with the measurements.

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  15. Prediction of the delayed deformations of a nuclear power plant using MC2010 and new EC2 relations for concrete creep and shrinkage

    Torrenti J.M., Aili A.

    fib Symposium     page: 773 - 780   2020

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    Publisher:fib Symposium  

    The prediction of the delayed deformations of prestressed concrete structures like nuclear power plants (NPPs) is important in order to assess and/or extend the service life of such structures. It is also a safety concern because, in these structures, the prestressing is there to avoid tensile stresses and cracking in case of a severe accident (where an internal pressure is generated). In this paper, the relations proposed in MC2010 and in the future Eurocode 2 for the delayed strains (creep and shrinkage of concrete and relaxation of steel) are used to predict the behaviour of a NPP built 25 years ago. As proposed in the future Eurocode 2, the parameters of the relations giving the evolution of shrinkage and creep are fitted to measurements made on laboratory samples when the NPP was built. The influence of the temperature and of the relative humidity inside the containment are also taken into account. Finally, using the superposition principle in a biaxial context, the predicted delayed strains are compared with the measurements.

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  16. Is long-term autogenous shrinkage a creep phenomenon induced by capillary effects due to self-desiccation?

    Abudushalamu Aili, Matthieu V, amme, Jean-Michel Torrenti, Benoit Masson

    Cement and Concrete Research   Vol. 108   page: 186 - 200   2018.6

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Elsevier {BV}  

    DOI: 10.1016/j.cemconres.2018.02.023

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  17. Time evolutions of non-aging viscoelastic Poisson's ratio of concrete and implications for creep of C-S-H

    Abudushalamu Aili, Matthieu V, amme, Jean-Michel Torrenti, Benoit Masson, Julien Sanahuja

    Cement and Concrete Research   Vol. 90   page: 144 - 161   2016.12

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Elsevier {BV}  

    DOI: 10.1016/j.cemconres.2016.09.014

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  18. Theoretical and practical differences between creep and relaxation Poisson’s ratios in linear viscoelasticity

    Abudushalamu Aili, Matthieu V, amme, Jean-Michel Torrenti, Benoit Masson

    Mechanics of Time-Dependent Materials   Vol. 19 ( 4 ) page: 537 - 555   2015.11

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media {LLC}  

    DOI: 10.1007/s11043-015-9277-5

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Books 1

  1. Long Term Prediction of the Delayed Behavior of Concrete Structures – The Case of the VERCORS Mock-Up

    Aili A., Torrenti J.M.

    RILEM Bookseries  2023 

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    The prediction of the long-term behavior of prestressed concrete structures is important in order to assess and/or extend the service life of such structures. Here, a modelling of the delayed strains (creep and shrinkage of concrete and relaxation of steel), based on the relations of the next Eurocode 2 (EC2), is used to predict the behavior of the internal vessel of the VERCORS mock-up of a French NPP. This modelling considers the influence of the temperature and of the relative humidity (varying under service conditions). The predicted delayed strains are compared with the measurements and different hypotheses are tested to improve the prediction of the delayed strains.

    DOI: 10.1007/978-3-031-07746-3_2

    Scopus