Scholarlink

In the context of environmental transition, geo- and bio-sourced materials offer promising solutions for the building sector. Light earth provides sustainable benefits such as CO₂ storage and the valorization of agricultural by-products, while improving indoor hygrothermal regulation. To move beyond artisanal practices, spray application for wall filling emerges as a viable industrial-scale technique. Yet, its performance remains poorly documented. This study investigates the feasibility of mechanized spraying of light earth using five plant aggregates: two types of hemp shiv, two types of crushed miscanthus stalk, and sunflower bark. Spraying was performed with an industrial machine applying clay slurry onto wooden frames and cubic molds. Results show that hemp shiv and sunflower bark are the most suitable aggregates, ensuring good cohesion, adhesion to the substrate, and regular application. By contrast, miscanthus stalk particles exhibit limitations related to their morphology, including slipperiness and mechanical blocking. Overall, this work demonstrates the technical feasibility of mechanized spraying of light earth enriched with bio-aggregates, while highlighting the importance of aggregate processing quality and material design for successful implementation.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Influence of Bioaggregates Type on the Performance of Sprayed Lightened Earth Walls

  • 会议论文

  • 发表日期：

    2026年

查看全文
  • Imane Idoui,
  • Aurélie Laborel-Préneron,
  • Céline Perlot,
  • Camille Magniont,
  • Maia Louvard,
  • Thomas Garnesson

摘要

In the context of environmental transition, geo- and bio-sourced materials offer promising solutions for the building sector. Light earth provides sustainable benefits such as CO₂ storage and the valorization of agricultural by-products, while improving indoor hygrothermal regulation. To move beyond artisanal practices, spray application for wall filling emerges as a viable industrial-scale technique. Yet, its performance remains poorly documented. This study investigates the feasibility of mechanized spraying of light earth using five plant aggregates: two types of hemp shiv, two types of crushed miscanthus stalk, and sunflower bark. Spraying was performed with an industrial machine applying clay slurry onto wooden frames and cubic molds. Results show that hemp shiv and sunflower bark are the most suitable aggregates, ensuring good cohesion, adhesion to the substrate, and regular application. By contrast, miscanthus stalk particles exhibit limitations related to their morphology, including slipperiness and mechanical blocking. Overall, this work demonstrates the technical feasibility of mechanized spraying of light earth enriched with bio-aggregates, while highlighting the importance of aggregate processing quality and material design for successful implementation.