煤制油炉渣喷射混凝土性能研究  

Research on properties of coal-to-liquids slag shotcrete

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作  者:王菲 温海锋 金俊杰 张海波[2] WANG Fei1, WEN Haiteng2, JIN Junjie3 , ZHANG Haibo2 (1. Shanxi Lu'an Environmental Energy Development Co. ,Ltd. , Changcun Coal Mine, Changzhi 046000,shanxi, China;2. School of Materials Science and Engineering ,Henan Polytechnic University, Jiaozuo 454000,Henan, China;3. Shanxi Lu' an Coal-based Clean Energy Co. , Ltd. , Changzhi 046000, Shanxi , China )

机构地区:[1]山西潞安环保能源开发股份有限公司常村煤矿,山西长治046000 [2]河南理工大学材料科学与工程学院,河南焦作454000 [3]山西潞安煤基清洁能源有限责任公司,山西长治046000

出  处:《河南理工大学学报:自然科学版》2019年第1期152-156,共5页JOURNAL OF HENAN POLYTECHNIC UNIVERSITY

基  金:河南省科技攻关项目(172102310719)

摘  要:为了解煤制油炉渣的基本性能,使其作为混凝土骨料替代天然砂石制备炉渣喷射混凝土,通过分析煤制油炉渣的物理性能和矿物组成,采用优化炉渣混凝土配合比以及改变可再分散乳胶粉、硅灰等外加剂掺量的方法制得炉渣混凝土,测试其黏接性与强度性能,观察炉渣骨料——水泥的微观界面结构。结果表明:煤制油炉渣具有与建筑用砂相似的粒度与物理性质,水泥与炉渣质量比为1∶4时强度性能良好;随着硅灰掺量增加,抗折、抗压强度增加,黏接性变化不明显;随着可再分散乳胶粉掺量增加,抗折强度先增高后降低,抗压强度线性降低,黏接性大幅改善。最后得到制备煤制油炉渣喷射混凝土的最佳条件。In order to analysis basic properties of coal-to-liquids slag and make it use as concrete aggregate to replace natural sand and grout to prepare slag shotcrete, by analyzing the physical properties and mineral com- position of coal-to-liquids slag, the slag concrete mix ratio was optimized. The slag concrete was prepared by mixing the amount of additives i. e. dispersed powder and silica fume. The slag concrete's adhesiveness and strength properties were tested and microscopic interlace structure of the slag aggregate-cement was observed. The results showed that the coal-to-liquids slag had similar particle size and physical properties. The construc- tion sand,and the strength ratio were good when the ratio of cement to slag weight was 1:4. With the increase of the silica fume content, the flexural and compressive strength increases. The changes in adhesive property is not significant. Along with the amount of redispersible latex powder increases, the flexural strength first increa- ses and then decreases. The compressive strength decreases linearly and the adhesiveness is greatly improved. Finally, the coal-to-liquids slag sprayed concrete prepared under the optimized mixing ratio and the addition ofa suitable additive amount was obtained.

关 键 词:煤制油炉渣 混凝土替代骨料 黏接性 抗压强度 

分 类 号:TU502.6[建筑科学—建筑技术科学]

 

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