采用工业固废复配无机胶凝材料的试验研究

发布时间：2018-06-03 05:36

本文选题：煤矸石 + 镁渣　；参考：《新型建筑材料》2017年10期

【摘要】：利用煤矸石底渣、粉煤灰、镁渣、生石灰和石膏等工业固废,通过研磨混料直接复配无机胶凝材料替代普通硅酸盐水泥。避免传统水泥制备工艺中需要煅烧水泥熟料的高能耗和高碳排放。利用XRF和XRD对原料的化学和物相组成进行分析,对配制的无机胶凝材料物理力学性能进行测试。结果表明,通过复配适量的生石灰,在水的作用下Ca(OH)2对粉煤灰和煤矸石底渣的激发作用可以极大地提升胶凝材料的强度,3、7和28 d抗压强度分别可达14.2、22.4、42.1 MPa。
[Abstract]:Industrial solid waste such as coal gangue bottom slag, fly ash, magnesium slag, quicklime and gypsum were used to replace ordinary Portland cement by grinding and mixing inorganic cementitious material directly. Avoid high energy consumption and high carbon emission of calcined cement clinker in traditional cement preparation process. The chemical and phase compositions of the raw materials were analyzed by XRF and XRD, and the physical and mechanical properties of the inorganic cementitious materials were tested. The results show that by adding proper amount of quicklime, Ca(OH)2 can excite fly ash and coal gangue bottom slag under the action of water, which can greatly enhance the compressive strength of cementing material on the 7th and 28th days, respectively.
【作者单位】：山西大学资源与环境工程研究所;
【基金】：人才事业发展项目(022822854501)
【分类号】：TQ177

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