Wood ash-based materials with improved post-fire resistance for building and infrastructure applications

IF 11.2 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Resources Conservation and Recycling Pub Date : 2025-06-20 DOI:10.1016/j.resconrec.2025.108475

Rosa De Michele , Barbara Liguori , Daniel Luceri , Giulio Zecca , Alessandro Largo , Christos Koidis , Charisios Achillas , Athanasios Kalaitzidis , Carmine Pascale , Costantino Menna

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引用次数: 0

Abstract

Alkali-Activated Materials (AAMs) are gaining attention because of different advantages such as CO₂ emissions reduction and improved fire-resistance. Wood Ashes (WA), potentially derived from fires, can been proposed as secondary raw material in AAMs manufacturing to guarantee a double positive impact: improved fire resistance of construction materials and secondary raw material valorisation. In this paper WA-based alkali activated composites were studied in terms of mechanical behaviour and fire-resistance properties compared to traditional cement-based systems. AAMs composites were prepared starting from two industrial by-products, FA and GGBS, replacing them with different percentage of wood ashes. Thermal resistance of the optimal mixtures, in terms of mechanical strength, were also evaluated. WA-based AAMs showed better fire performance, with lower compressive strength loss and a higher average residual compressive strength. LCA results suggest that utilizing wood ashes, especially when locally sourced, enhances environmental performance by partially substituting more environmentally harmful aluminosilicate precursors.

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木质灰基材料，耐火性能提高，适用于建筑和基础设施

碱活性材料（AAMs）因其具有减少二氧化碳排放和提高耐火性能等优点而受到人们的关注。木灰（WA），可能来源于火灾，可以作为aam制造的二次原料，以保证双重积极影响：提高建筑材料的耐火性和二次原料的价值。本文研究了水合酸基碱活化复合材料的力学性能和耐火性能，并与传统水泥基体系进行了比较。以两种工业副产物FA和GGBS为原料，用不同比例的木灰替代，制备了AAMs复合材料。在机械强度方面，还对最佳混合物的耐热性进行了评估。基于wa的aam具有较好的防火性能，抗压强度损失较小，平均残余抗压强度较高。LCA结果表明，利用木灰，特别是当地来源的木灰，通过部分取代对环境更有害的硅酸铝前体来提高环境绩效。

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来源期刊

Resources Conservation and Recycling 环境科学-工程：环境

CiteScore

22.90

自引率

6.10%

发文量

625

审稿时长

23 days

期刊介绍： The journal Resources, Conservation & Recycling welcomes contributions from research, which consider sustainable management and conservation of resources. The journal prioritizes understanding the transformation processes crucial for transitioning toward more sustainable production and consumption systems. It highlights technological, economic, institutional, and policy aspects related to specific resource management practices such as conservation, recycling, and resource substitution, as well as broader strategies like improving resource productivity and restructuring production and consumption patterns. Contributions may address regional, national, or international scales and can range from individual resources or technologies to entire sectors or systems. Authors are encouraged to explore scientific and methodological issues alongside practical, environmental, and economic implications. However, manuscripts focusing solely on laboratory experiments without discussing their broader implications will not be considered for publication in the journal.