This study explores the innovative use of rubber sludge (RS) from glove manufacturing as a partial replacement for fly ash (FA) in geopolymer production. The research investigates the physical properties, functional group analysis, microstructural analysis, phase analysis and compressive strength. The partial replacement of different types of RS, such as activated sludge (AS), pre-leaching sludge (PLS) and coagulant sludge (CS), will affect differently on the geopolymer integrity and performance. CS enriched with high calcium content, facilitated the formation of a denser geopolymer matrix with C(N)-A-S-H gel in conjunction with C-S-H, C-A-S-H and N-A-S-H gels, enhancing the compressive strength of FA/CS geopolymers up to 70.4 MPa, surpassing FA/AS and FA/PLS geopolymers. The fly ash/rubber sludge geopolymers exhibited compressive strengths ranging from 20.5 to 70.4 MPa, not only meeting ASTM standards for construction but also effectively immobilizing hazardous metals, particularly Zn (>98.4 %), the Zn leaching in geopolymers was reduced by more than 87.4 % compared to the rubber sludge itself, thereby mitigating environmental toxicity. This utilization addresses significant industrial waste management issues, providing a cost-effective and environmentally friendly alternative for construction. The findings contribute to advancing sustainable building materials and advocate for equitable utilization of industrial waste resources.

中文翻译：

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评估与橡胶污泥混合的飞灰地质聚合物的可行性和浸出性


本研究探索了手套制造中橡胶污泥 (RS) 的创新用途，作为地质聚合物生产中粉煤灰 (FA) 的部分替代品。该研究调查了物理性能、官能团分析、微观结构分析、相分析和抗压强度。不同类型的RS，如活性污泥（AS）、预浸污泥（PLS）和混凝污泥（CS）的部分替代，会对地聚合物的完整性和性能产生不同的影响。 CS富含钙含量，促进C(N)-ASH凝胶与CSH、CASH和NASH凝胶结合形成更致密的地质聚合物基质，将FA/CS地质聚合物的抗压强度提高至70.4 MPa，超过FA/ AS 和 FA/PLS 地质聚合物。粉煤灰/橡胶污泥地质聚合物的抗压强度为20.5至70.4 MPa，不仅满足ASTM建筑标准，而且能有效固定有害金属，特别是锌（>98.4%），地质聚合物中锌的浸出量减少了87.4以上％与橡胶污泥本身相比，从而减轻环境毒性。这种利用解决了重要的工业废物管理问题，为建筑提供了一种经济高效且环保的替代方案。研究结果有助于推进可持续建筑材料的发展，并倡导公平利用工业废物资源。