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首页> 外文期刊>International journal of sustainable engineering >Environmental and economic viability of Alkali Activated Material (AAM) comprising slag, fly ash and spent coffee ground
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Environmental and economic viability of Alkali Activated Material (AAM) comprising slag, fly ash and spent coffee ground

机译：包括矿渣，粉煤灰和废咖啡渣的碱性活性物质（AAM）的环境和经济可行性

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摘要

This paper presents a concept of reusing spent coffee ground (CG) as a construction material. Through creating a CG-filled Alkali Activated Material (AAM) with industrial wastes such as fly ash (FA) and slag (S), a strong recycled material was synthesised and found suitable to be used as a road subgrade fill material. Potential groundwater contamination tests were done in accordance to the Australian Standard Leaching Procedure (ASLP). The environmental analysis done on this green material shows that albeit being composed of various industrial wastes and chemicals, CG-filled AAMs in the ground will not cause adverse environmental impacts to surrounding soils and groundwater. Heavy metals and cyanide leached from the AAMs were well below hazardous thresholds. Comparing the carbon footprint of CG, it is found that recycling CG into a construction material would reduce the nett global carbon emission by reducing dependency on quarried material. Cost analyses done on CG-filled AAMs show that these AAMs are expensive to produce relative to traditional construction materials. However, as recycling technology is progressively advancing, in the future the economic value of CG-filled AAM may increase to match those of contemporary construction materials.
机译：本文提出了将废咖啡渣（CG）用作建筑材料的概念。通过用工业废料（例如粉煤灰（FA）和矿渣（S））创建由CG填充的碱活化材料（AAM），合成了一种坚固的回收材料，并被发现适合用作道路路基填充材料。潜在的地下水污染测试是根据澳大利亚标准浸出程序（ASLP）进行的。对这种绿色材料进行的环境分析表明，尽管由各种工业废料和化学药品组成，但地下填充有CG的AAM不会对周围的土壤和地下水造成不利的环境影响。从AAM中浸出的重金属和氰化物远低于危险阈值。比较CG的碳足迹，发现将CG回收到建筑材料中将通过减少对采石材料的依赖性来减少全球净碳排放量。对填充了CG的AAM进行的成本分析表明，与传统的建筑材料相比，这些AAM的生产成本很高。但是，随着回收技术的不断进步，将来填充CG的AAM的经济价值可能会增加，以与当代建筑材料相匹配。

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  • 作者

    Teck-Ang Kua; Monzur Alam lmteaz; Arul Arulrajah; Suksun Horpibulsuk;

  • 作者单位

    Swinburne University of Technology, Department of Civil and Construction Engineering, Hawthorn, Victoria, Australia;

    Swinburne University of Technology, Department of Civil and Construction Engineering, Hawthorn, Victoria, Australia;

    Swinburne University of Technology, Department of Civil and Construction Engineering, Hawthorn, Victoria, Australia;

    School of Civil Engineering and Center of Innovation in Sustainable Infrastructure Development, Suranaree University of Technology, Nakhon Ratchasima, Thailand,Department of Civil and Construction Engineering, Swinburne University of Technology, Hawthorn, Victoria, Australia;

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  • 正文语种 eng
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  • 关键词

    Alkali Activated Material (AAM); coffee grounds (CG); subgrade; environmental assessment;

    机译：碱活性物质（AAM）;咖啡渣（CG）;路基环境评估;

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