煤制油炉渣喷射混凝土性能研究
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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 composition 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 interface 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 construction 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 increases 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 of a suitable additive amount was obtained.
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 composition 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 interface 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 construction 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 increases 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 of a suitable additive amount was obtained.
引文
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[7]王雨利,刘素霞,罗树琼,等.利用固体废弃物制备蒸压加气混凝土砌块的研究[J].河南理工大学学报(自然科学版),2012,31(5):613-616.WANG Y L,LIU S X,LUO S Q,et al. Study on the preparation of autoclaved aerated concrete block by solid waste[J]. Journal of Henan Polytechnic University(Natural Science),2012,31(5):613-616.
[8]张超.粉煤灰和炉渣作为水泥混合材及粉煤灰掺量对不同水胶比混凝土的强度影响研究[D].西安:西安建筑科技大学,2012.ZHANG C. Study on the influence of fly ash and slag as cement mix and fly ash addition on the strength of concrete with different water-binder ratio[D]. Xi’an:Xi’an University of Architecture and Technology,2012.
[9] RADOSLAW POMYKALA. The mechanical properties of coal gasification slag as a component of concrete and binding mixtures[J]. Environment,2014,23(4):1404-1406.
[10] SEUNG BUM PARK,YOUNG JANG,JUN L,et al. An experimental study on the hazard assessment and mechanical properties of porous concrete utilizing coal bottom ash coarse aggregate in Korea[J]. Journal of Hazardous Materials,2009,166(41):348-355.
[11] WATCHARAPONG WONGKE. Compressive strength,microstructure and thermal analysis of autoclaved and air cured structural lightweight concrete made with coal bottom A-S-H and silica fune[J]. Construction and Building Material,2010,527(16):3676-3684.
[12]杨雷,罗树琼,管学茂,等.粉煤灰对矿用炉渣喷射混凝土性能影响[J].混凝土,2010,4(3):108-110.YANG L,LUO S Q,GUAN X M,et al. Influence of fly ash on the performance of mine slag shotcrete[J].Concrete,2010,4(3):108-110.
[13] ISA YUKSELA,TURHAN BILIRB,OMER OZKAN,et al. Durability of concrete incorporating non-ground blast furnace slag and bottom ash as fine aggregate[J]. Building and Environment,2007,42(7):2651-2659.
[14]王雨利,荆浩.不同系列碱矿渣水泥的对比研究[J].河南理工大学学报(自然科学版),2016,35(4):583-589.WANG Y L,JING H. Comparative study of different series of alkali slag cement[J]. Journal of Henan Polytechnic University(Natural Science),2016,35(4):583-589.
[15]王昊.炉渣作为水泥混合材的试验研究及机理分析[D].厦门:厦门大学,2014.WANG H. Experimental study and mechanism analysis of slag as cement admixture[D]. Xiamen:Xiamen University,2014.
[2]李贺.中国煤间接液化技术及未来前景概述[J].内蒙古石油化工,2014,2(7):97-98.LI H. Overview of indirect coal liquefaction technology and future prospects in China[J]. Inner Mongolia Petrochemical Industry,2014,2(7):97-98.
[3] ZHOU W J,ZHU B,CHEN D L,et al. Techno economic assessment of China’ s indirect coal liquefaction projects with different CO2Capture alternatives[J].Energy,2011,36(11):6559-6566.
[4]章丽萍,刘青,陈傲蕾,等.煤间接液化固体废物污染特性研究[J].中国矿业大学学报,2015,44(5):931-936.ZHANG L P,LIU Q,CHEN A L,et al. Pollution characteristics of residues from indirect coal liquefaction[J]. Journal of China University of Mining&Technology,2015,44(5):931-936.
[5] WAGNER N J,MATJIE R H,SLAGHUIS J H,et al.Characterization of unburned carbon present in coarse gasification ash[J]. Fuel,2008,87(6):683-691.
[6]孙启文,吴建民,张宗森,等.煤间接液化残渣技术及其研究进展[J].化工进展,2013,32(1):1-10.SUN Q W,WU J M,ZHANG Z S,et al. Coal indirect liquefaction residue technology and its research progress[J]. Progress in Chemical Industry,2013,32(1):1-10.
[7]王雨利,刘素霞,罗树琼,等.利用固体废弃物制备蒸压加气混凝土砌块的研究[J].河南理工大学学报(自然科学版),2012,31(5):613-616.WANG Y L,LIU S X,LUO S Q,et al. Study on the preparation of autoclaved aerated concrete block by solid waste[J]. Journal of Henan Polytechnic University(Natural Science),2012,31(5):613-616.
[8]张超.粉煤灰和炉渣作为水泥混合材及粉煤灰掺量对不同水胶比混凝土的强度影响研究[D].西安:西安建筑科技大学,2012.ZHANG C. Study on the influence of fly ash and slag as cement mix and fly ash addition on the strength of concrete with different water-binder ratio[D]. Xi’an:Xi’an University of Architecture and Technology,2012.
[9] RADOSLAW POMYKALA. The mechanical properties of coal gasification slag as a component of concrete and binding mixtures[J]. Environment,2014,23(4):1404-1406.
[10] SEUNG BUM PARK,YOUNG JANG,JUN L,et al. An experimental study on the hazard assessment and mechanical properties of porous concrete utilizing coal bottom ash coarse aggregate in Korea[J]. Journal of Hazardous Materials,2009,166(41):348-355.
[11] WATCHARAPONG WONGKE. Compressive strength,microstructure and thermal analysis of autoclaved and air cured structural lightweight concrete made with coal bottom A-S-H and silica fune[J]. Construction and Building Material,2010,527(16):3676-3684.
[12]杨雷,罗树琼,管学茂,等.粉煤灰对矿用炉渣喷射混凝土性能影响[J].混凝土,2010,4(3):108-110.YANG L,LUO S Q,GUAN X M,et al. Influence of fly ash on the performance of mine slag shotcrete[J].Concrete,2010,4(3):108-110.
[13] ISA YUKSELA,TURHAN BILIRB,OMER OZKAN,et al. Durability of concrete incorporating non-ground blast furnace slag and bottom ash as fine aggregate[J]. Building and Environment,2007,42(7):2651-2659.
[14]王雨利,荆浩.不同系列碱矿渣水泥的对比研究[J].河南理工大学学报(自然科学版),2016,35(4):583-589.WANG Y L,JING H. Comparative study of different series of alkali slag cement[J]. Journal of Henan Polytechnic University(Natural Science),2016,35(4):583-589.
[15]王昊.炉渣作为水泥混合材的试验研究及机理分析[D].厦门:厦门大学,2014.WANG H. Experimental study and mechanism analysis of slag as cement admixture[D]. Xiamen:Xiamen University,2014.