铜渣-水泥复合胶凝材料力学性能研究

发布时间：2018-02-14 03:31

本文关键词： 铜渣凝结时间抗压强度水化产物　出处：《硅酸盐通报》2017年05期 　论文类型：期刊论文

【摘要】：铜渣以5%、10%、15%的比例取代水泥制备铜渣-水泥复合胶凝材料。研究铜渣对水泥基胶凝材料标准稠度用水量、凝结时间、净浆抗压强度、胶砂抗折与抗压强度的影响,并利用XRD、TG/DSC和SEM-EDS技术手段分析掺入铜渣后水泥基胶凝材料物相和微观形貌的变化。研究结果表明:铜渣掺入会使水泥胶凝材料的标准稠度用水量增加,凝结时间延长,一定程度上提高水泥胶凝材料的抗折、抗压强度;铜渣-水泥胶凝材料的主要水化产物和水泥胶凝材料类似,并有Fe(OH)3/Fe(OH)2凝胶生成。铜渣-水泥复合胶凝材料微观结构较水泥胶凝材料密实。
[Abstract]:The copper-cement composite cementitious material was prepared by replacing the cement with copper slag in a ratio of 5% to 10% or 15%. The effects of copper slag on the standard consistency water consumption, setting time, net slurry compressive strength, cement sand flexural strength and compressive strength of cement-based cementing materials were studied. The changes of phase and micromorphology of cement-based cementitious materials were analyzed by means of SEM-EDS and TG / DSC. The results showed that the addition of copper slag could increase the standard consistency water consumption and prolong the setting time of cementitious materials. To a certain extent, the flexural strength and compressive strength of the cementing materials are improved, and the main hydration products of the copper-slag cement materials are similar to those of the cement cementitious materials. Fe(OH)3/Fe(OH)2 gel was formed. The microstructure of copper slag cement composite cementing material was more dense than that of cement cementitious material.
【作者单位】：昆明理工大学建筑工程学院云南省先进材料力学行为与微观结构设计高校重点实验室;
【基金】：国家自然科学基金(11562010,51502121) 昆明理工大学引进人才基金资助项目(KKSY201406112);昆明理工大学分析测试基金(2016M2014710004)
【分类号】：TB33;TQ172.1

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