Characterisation of a novel sustainable wood-geopolymer masonry units

IF 6.2 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY
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引用次数: 0

Abstract

Masonry units have been fundamental to building construction for over 6000 years, making them one of the oldest and most widely used materials in the industry. However, their production using ordinary Portland cement has significant environmental impacts, including high carbon dioxide emissions and depletion of natural resources. This highlights the need for more sustainable alternatives. One promising option is the use of recycled aggregates from construction and demolition waste in masonry unit manufacturing. This paper investigates the use of chipped waste timber as aggregates, bound together with geopolymer cement made from industrial by-products such as fly ash and slag. The result is a new type of masonry units, referred to as wood geopolymer masonry units (WGMUs), which were evaluated against established standards and compared with conventional masonry units (CMUs). The innovative WGMUs demonstrated improved ductility and reduced density compared to CMUs, making them easier to handle and lighter in construction. They also have a distinctive, rustic texture and consistent dimensions that meet Australian standards. Although WGMUs exhibited higher water absorption and drying contraction due to their wood content, these characteristics generally remain within acceptable limits, supporting their potential as eco-friendly construction materials.

新型可持续木质地聚合物砌体单元的特性分析
6000 多年来,砌体一直是建筑施工的基本材料,使其成为行业中历史最悠久、使用最广泛的材料之一。然而,使用普通波特兰水泥生产砌体单元会对环境造成严重影响,包括二氧化碳排放量高和自然资源枯竭。因此,我们需要更具可持续性的替代品。其中一个很有前景的方案是在砌筑单元生产中使用从建筑和拆除废料中提取的再生骨料。本文研究了如何使用碎废木材作为骨料,并与由粉煤灰和矿渣等工业副产品制成的土工聚合物水泥结合在一起。结果产生了一种新型砌体单元,称为木质土工聚合物砌体单元(WGMUs),根据既定标准对其进行了评估,并与传统砌体单元(CMUs)进行了比较。与 CMUs 相比,创新的 WGMUs 具有更好的延展性和更低的密度,使其在施工中更易于操作,重量更轻。它们还具有独特的质朴纹理和符合澳大利亚标准的一致尺寸。虽然 WGMUs 因其木材含量而表现出较高的吸水性和干燥收缩性,但这些特性总体上保持在可接受的范围内,支持其作为生态友好型建筑材料的潜力。
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来源期刊
CiteScore
7.40
自引率
1.20%
发文量
31
审稿时长
22 days
期刊介绍: Developments in the Built Environment (DIBE) is a recently established peer-reviewed gold open access journal, ensuring that all accepted articles are permanently and freely accessible. Focused on civil engineering and the built environment, DIBE publishes original papers and short communications. Encompassing topics such as construction materials and building sustainability, the journal adopts a holistic approach with the aim of benefiting the community.
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