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首页> 外文期刊>Magazine of Concrete Research >Sustainable mortars containing fly ash, glass powder and blast-furnace and lead-smelter slag
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Sustainable mortars containing fly ash, glass powder and blast-furnace and lead-smelter slag

机译：含有粉煤灰，玻璃粉，高炉和铅冶炼炉渣的可持续砂浆

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摘要

The aim of this study was to develop sustainable concrete using waste products to reduce both the carbon dioxide emissions associated with concrete production and the extraction of non-renewable natural resources. The development of the new sustainable concrete involved the replacement of cement with industrial by-products (fly ash, glass powder and ground granulated blast-furnace slag (GGBS)) and the replacement of natural river sand (NS) with waste-based sand (lead-smelter slag (LSS)). Twenty-four batches of mortar mixes were produced and tests were performed to determine the flowability, compressive strength and direct tensile strength of each batch. Microstructural analysis was undertaken to explain the experimentally obtained properties of the mortars. The compressive and tensile strengths of waste-based mortars containing LSS were found to be similar to those of mortars containing NS. Mortars with 80% replacement of cement with GGBS and 100% replacement of NS with LSS showed minimal strength reduction (4%) compared with the conventional mortar. The strength reductions of the waste-based mortars compared with the conventional mortar increased at 90% and 100% cement replacement levels, but remained limited to approximately 20% (at 90% GGBS) and 30% (at 100% GGBS). The findings of this study are promising and point to the potential development of new structural-grade mortars using full or near-full replacement of cement with industrial by-products and full replacement of NS with waste-based sand.
机译：这项研究的目的是使用废品开发可持续的混凝土，以减少与混凝土生产相关的二氧化碳排放以及不可再生自然资源的提取。新型可持续混凝土的开发包括用工业副产品（粉煤灰，玻璃粉和磨碎的高炉矿渣（GGBS）替代水泥）以及用废砂替代天然河砂（NS）（铅冶炼炉渣（LSS））。生产了二十四批砂浆混合物，并进行了测试以确定每批的流动性，抗压强度和直接拉伸强度。进行了微结构分析，以解释实验获得的砂浆性能。发现含有LSS的废物基砂浆的抗压强度和抗拉强度与含有NS的砂浆相似。与常规砂浆相比，用GGBS代替80％的水泥和用LSS替代100％的NS的砂浆显示出最小的强度降低（4％）。与常规砂浆相比，废砂浆的强度降低在90％和100％水泥替代水平下有所提高，但仍限制在大约20％（在90％GGBS下）和30％（在100％GGBS下）。这项研究的结果很有希望，并指出了使用工业副产品完全或几乎完全替代水泥以及用废砂完全替代NS来开发新型结构级砂浆的潜力。

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  • 来源
    《Magazine of Concrete Research》 |2020年第10期|447-459|共13页
  • 作者

  • 作者单位

    Univ Melbourne Dept Infrastruct Engn Parkville Vic Australia;

    Texas State Univ Ingram Sch Engn San Marcos TX 78666 USA;

    Univ Queensland Sch Civil Engn Brisbane Qld Australia;

    Flinders Univ S Australia Coll Sci & Engn Adelaide SA Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    mortar; sustainability; tensile properties;

    机译：砂浆;可持续性;拉伸性能;

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