Yi Du


Last Name

Du

First Name

Yi

ORCID

0000-0002-6335-8996

Organisational unit

03972 - Habert, Guillaume / Habert, Guillaume

Filters

2019 - 201912020 - 202520
Reset filters

Search Results

Publications 1 - 10 of 21
  • Low carbon yet high comfort: merging regenerative materials and bioclimatic architecture
    Item type: Other Conference Item
    Du, Yi; Estève Bourrel, Pierre; Marteaux, Clémence; et al. (2025)
    SBE Conference Series ~ Sustainable Built Environment Conference 2025 Zurich - Extended Abstracts
  • Poured earth: Building affordability without the carbon cost?
    Item type: Other Conference Item
    Brumaud, Coralie; Du, Yi; Ardant, Daria; et al. (2025)
    SBE Conference Series ~ Sustainable Built Environment Conference 2025 Zurich - Extended Abstracts
  • The search for more sustainable additives for mitigating the shrinkage of earth-based materials
    Item type: Other Conference Item
    Du, Yi; Habert, Guillaume; Lura, Pietro; et al. (2025)
    SBE Conference Series ~ Sustainable Built Environment Conference 2025 Zurich - Extended Abstracts
  • Beyond the hype: is poured earth truly a low-cost and low-carbon alternative?
    Item type: Other Conference Item
    Ardant, Daria; Du, Yi; Brumaud, Coralie; et al. (2025)
    Poured earth aims to combine low-carbon potential with concrete's scalability. This study compares strategies developed for this application to assess their strength and carbon impact at the concrete scale. Results highlight the need to use each strategy in the right place to use its full potential.
  • Investigation of Irreversible CO2 Interactions with Clay Minerals for the Passive Regulation of CO2 in Indoor Environments
    Item type: Conference Paper
    Arris-Roucan, Sofia; Du, Yi; Brumaud, Coralie; et al. (2024)
    RILEM Bookseries ~ Second RILEM International Conference on Earthen Construction
    While the passive moisture buffering properties of earthen materials are well known, recent studies have explored their potential to improve indoor air quality by buffering indoor pollutants, particularly CO₂. Previous research has shown that the material interacts with CO₂, but that some of the adsorbed CO₂ may not be fully released in a humid environment, which is investigated in this study. To investigate the physico-chemical interactions, different clay minerals with different chemical composition and structures were studied. Measurements using thermogravimetry and mass spectrometry were carried out on samples exposed to elevated CO₂ levels and showed no carbonate formation or other strongly bound CO₂, suggesting that the observed irreversibility is not due to precipitation of new phases but rather to CO₂ dissolution in water. This suggests that CO₂ retention may be fully reversible under certain conditions.
  • Low-carbon indoor humidity regulation via 3D-printed superhygroscopic building components
    Item type: Journal Article
    Posani, Magda; Voney, Vera; Odaglia, Pietro; et al. (2025)
    Nature Communications
    Indoor humidity can significantly impact our comfort and well-being, often leading to the use of mechanical systems for its management. However, these systems can result in substantial carbon emissions and energy precarity. This study offers an alternative: using low-carbon materials that naturally buffer moisture to passively regulate the indoor humidity. A geopolymer composite incorporating industrial waste is implemented via binder jet 3D printing technology. The superhygroscopic nature of the material, combined with the optimal geometry of 3D-printed components, unlocks remarkable potential for passive humidity regulation, achieving a moisture buffering value over 14 g·m⁻²·%RH⁻¹. The use of 3D-printed, geopolymer tiles for surface finishing in a library hosting 15 people was shown to improve annual indoor hygrometric comfort by up to 85%, a performance inconceivable with conventional materials and techniques. Additionally, the environmental impact of these tiles is significantly lower than that of a conventional dehumidification system. This study paves the way for merging highly hygroscopic, low-carbon materials with advanced manufacturing techniques to regulate indoor humidity levels and reduce our dependency on mechanical systems.
  • Poured earth: the emerging liquid stone for XXI century
    Item type: Other Conference Item
    Brumaud, Coralie; Du, Yi; Ardant, Daria; et al. (2024)
    Earth materials are receiving emerging interest due to their lower environmental impact and infinite recyclability. Amongst the techniques of revitalizing earth materials within contemporary construction sector, poured earth or self-compacting earth materials stand out due to their liquid processing characteristics enabling fast and easy production. Can poured earth be the liquid stone of the 21st century? Herein, this paper reviewed the state-of-the-art research on poured earth as well as the challenges and future research questions associated with their large-scale applications.
  • Earth, the new liquid stone: Development and perspectives
    Item type: Journal Article
    Brumaud, Coralie; Du, Yi; Ardant, Daria; et al. (2024)
    Materials Today Communications
    Revitalizing earth materials within the contemporary construction sector is advantageous in light of the imperative to decarbonize the industry in response to climate change. With the liquid processing characteristics, poured earth or self-compacting earth materials attract increasing interest due to their fast and easy production. Can poured earth be the liquid stone of the 21st century? In this perspective article, authors present different strategies allowing designing poured earth and identify challenges and opportunities given by this new liquid stone.
  • Learning from tradition: A potential additive combination for producing waterproof poured earth
    Item type: Other Conference Item
    Du, Yi; Brumaud, Coralie; Habert, Guillaume (2022)
    Book of Abstracts. First International RILEM Conference on Earthen Construction: Fundamentals and Applications for a Circular Economy
    Inspired by a vernacular earthen construction practice retained in the tropical regions of Africa, we propose a low-environmental impact additive solution for improving the water resistance of clay materials. Oak tannin combined with iron chloride was set as an example to illustrate its e ectiveness and to understand the involved mechanism. We highlight that incorporating oak tannin and iron chloride greatly improves the water resistance of clay materials due to a reaction of complexation between tannin and iron ions. Finally, by controlling the reaction kinetic, we show that a new type of poured earth with improved water resistance can be produced.
  • Influence of tannin and iron ions on the water resistance of clay materials
    Item type: Journal Article
    Du, Yi; Habert, Guillaume; Brumaud, Coralie (2022)
    Construction and Building Materials
    The objective of this paper is to propose a simple and robust additive solution to improve the water-resistance of clay materials by revisiting a traditional recipe of vernacular construction. The influence of the combination of oak tannin with iron chloride on the properties of clay materials in terms of rheological behavior, compressive strength, and water resistance was studied. We show that adding iron chloride can annihilate the deflocculation action of tannin by a complexation reaction between iron ions and tannin. The accumulation and oxidation of formed complex at the sample surface, identified by TGA and SEM, prevent water ingression.
Publications 1 - 10 of 21