Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Pathways to formulate lightweight and ultra-lightweight 3D printable cementitious composites
https://orcid.org/0000-0002-7037-2454
https://orcid.org/0000-0002-2950-2237
Abstract This paper studies the pathways to formulate lightweight and ultra-lightweight 3D printable cementitious composites. A hybrid approach was proposed by combining the advantages of traditional chemical-induced foaming (foaming approach) and lightweight particulate inclusions (synthetic foam approach). A comprehensive experimental program was conducted to evaluate the effects of foaming agents and fly ash cenosphere (FAC) on the printability, microstructure, mechanical and thermal properties of 3D printed samples. The results showed that the hybrid approach could produce a mixture with a density as low as 470 kg/m3 while ensuring good flowability and buildability owing to the lubricating effect of foaming and supporting skeleton formed by FAC. In addition, a three-step homogenization procedure was also developed to predict the effective elastic modulus and thermal conductivity of 3D printable cementitious composites and cementitious foam. The findings of the study highlighted the effectiveness of the hybrid approach in formulating 3D printable ultra-lightweight cementitious composites in thermal insulation and acoustic applications.
Highlights Pathways to formulate LW and ULW 3D printable cementitious composites are studied. Fresh and hardened properties of 3D printed materials are tinvestigated. Predictive models were developed to estimate the elastic and thermal properties of lightweight mixtures.
Pathways to formulate lightweight and ultra-lightweight 3D printable cementitious composites
https://orcid.org/0000-0002-7037-2454
https://orcid.org/0000-0002-2950-2237
Abstract This paper studies the pathways to formulate lightweight and ultra-lightweight 3D printable cementitious composites. A hybrid approach was proposed by combining the advantages of traditional chemical-induced foaming (foaming approach) and lightweight particulate inclusions (synthetic foam approach). A comprehensive experimental program was conducted to evaluate the effects of foaming agents and fly ash cenosphere (FAC) on the printability, microstructure, mechanical and thermal properties of 3D printed samples. The results showed that the hybrid approach could produce a mixture with a density as low as 470 kg/m3 while ensuring good flowability and buildability owing to the lubricating effect of foaming and supporting skeleton formed by FAC. In addition, a three-step homogenization procedure was also developed to predict the effective elastic modulus and thermal conductivity of 3D printable cementitious composites and cementitious foam. The findings of the study highlighted the effectiveness of the hybrid approach in formulating 3D printable ultra-lightweight cementitious composites in thermal insulation and acoustic applications.
Highlights Pathways to formulate LW and ULW 3D printable cementitious composites are studied. Fresh and hardened properties of 3D printed materials are tinvestigated. Predictive models were developed to estimate the elastic and thermal properties of lightweight mixtures.
Pathways to formulate lightweight and ultra-lightweight 3D printable cementitious composites
https://orcid.org/0000-0002-7037-2454
https://orcid.org/0000-0002-2950-2237
Abstract This paper studies the pathways to formulate lightweight and ultra-lightweight 3D printable cementitious composites. A hybrid approach was proposed by combining the advantages of traditional chemical-induced foaming (foaming approach) and lightweight particulate inclusions (synthetic foam approach). A comprehensive experimental program was conducted to evaluate the effects of foaming agents and fly ash cenosphere (FAC) on the printability, microstructure, mechanical and thermal properties of 3D printed samples. The results showed that the hybrid approach could produce a mixture with a density as low as 470 kg/m3 while ensuring good flowability and buildability owing to the lubricating effect of foaming and supporting skeleton formed by FAC. In addition, a three-step homogenization procedure was also developed to predict the effective elastic modulus and thermal conductivity of 3D printable cementitious composites and cementitious foam. The findings of the study highlighted the effectiveness of the hybrid approach in formulating 3D printable ultra-lightweight cementitious composites in thermal insulation and acoustic applications.
Highlights Pathways to formulate LW and ULW 3D printable cementitious composites are studied. Fresh and hardened properties of 3D printed materials are tinvestigated. Predictive models were developed to estimate the elastic and thermal properties of lightweight mixtures.
Pathways to formulate lightweight and ultra-lightweight 3D printable cementitious composites
Zandifaez, Peyman (Autor:in) / Shen, Zhenglai (Autor:in) / Sorgenfrei, Reese (Autor:in) / Li, Yucen (Autor:in) / Dias-da-Costa, Daniel (Autor:in) / Zhou, Hongyu (Autor:in)
15.03.2024
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch