Earth-Based Biocomposite Materials and mortars for additive manufactured components aimed at improving the Indoor Air Quality in Buildings

Department

Department of Energy “G. Ferraris”, Politecnico di Torino

Main research activities/topics/projects

Building on previous work in developing 3D-printed clay matrices and lime plasters (10.1016/j.jobe.2024.109631) enhanced with Super Adsorbent BioPolymers (10.1016/j.jobe.2023.107147), this research aims to explore the potential of earth-based biocomposite materials for indoor air quality applications, focusing on moisture buffering. The proposed study will develop a novel biocomposite that integrates alginate hydrogel with carbon derived from the pyrolysis of biomass. This innovative material is expected to offer superior hygroscopic properties, enhanced mechanical durability, and improved longevity compared to existing solutions.

The research will utilize Liquid Deposition Modeling (LDM) additive manufacturing to create the biocomposite components. This process allows for precise control over the material's microstructure, ensuring an optimal balance between exposed surface area and structural integrity. The LDM printing technique will be optimized for building applications, particularly for passive control of indoor air quality.

Key experimental activities will include:

• Hygroscopic Property Analysis: The moisture buffering value (MBV) and sorption isotherm of the biocomposite will be evaluated using dynamic vapor sorption (DVS) analysis. These tests will determine the material's ability to regulate indoor humidity levels effectively.
• Mechanical Property Assessment: The mechanical strength and durability of the printed components will be assessed, with a focus on understanding the impact of material composition and microstructure on performance.
• Material Characterization: Advanced techniques, such as scanning electron microscopy (SEM) and X-ray diffraction (XRD), will be used to correlate the material’s microstructure with its hygroscopic and mechanical properties.

This research aims to develop sustainable, high-performance building materials that contribute to energy efficiency and occupant comfort through enhanced indoor air quality.

Special entry requirements

Material Science Expertise

• Fundamental Knowledge. A solid understanding of composite materials, with a focus on biocomposites and their use in building materials. This includes familiarity with bio-based materials, clay, and lime matrices

Technical Skills

• Additive Manufacturing. A proactive attitude toward troubleshooting, particularly with Liquid Deposition Modeling (LDM) 3D printers, or relevant experience in preparing and handling materials for testing and characterization.

Data Analysis Proficiency

• Analytical Skills. Competence in analyzing experimental data using software tools such as Excel, MATLAB, or Python to interpret results and validate findings effectively

Working language

 English

Duration in months (min-max)

PhD sandwich: 6-12

Post Doc: 6-12