碳化水泥-钢渣复合胶凝材料的强度和微观结构
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摘要
研究了不同碳化方式、钢渣掺量和促进剂对水泥-钢渣微粉复合胶凝材料力学性能和微观结构的影响。结果表明:碳化对试样的早期强度提高有明显的促进作用,但对后期强度作用较小;碳化反应发生在试样早期水化完成之前,碳化越早,试样强度越高。采用促进剂的试样强度提高明显,碳化处理3d抗压强度较不加促进剂的空白样提高了12.0%,处理28d抗压强度提高了29.0%。促进剂对水泥-钢渣微粉复合胶凝材料碳化产物CaCO_3的形貌具有一定的影响。
The effects of different carbonation methods,steel slag content and accelerator on the strength and microstructure of cement-steel slag powder composite cementitious materials were studied.The results show that carbonization has a significant effect on the early stage strength of the sample,and the effect weakens on the later stage strength.Carbonation occurs before the early hydration of the sample is completed,The earlier the carbonization is,the higher the strength of the sample will be.The strength of the test piece with accelerator was improved obviously.The compressive strength after the carbonized treatment of the sample with accelerator added was 12.0% higher than that without accelerator otherwise the same,and the compressive strength after 28 days carbon treatment was enhanced by 29.0%.Accelerator has a certain influence on the morphology of carbonized product CaCO_3 of cement-steel slag powder composite cementitious material.
The effects of different carbonation methods,steel slag content and accelerator on the strength and microstructure of cement-steel slag powder composite cementitious materials were studied.The results show that carbonization has a significant effect on the early stage strength of the sample,and the effect weakens on the later stage strength.Carbonation occurs before the early hydration of the sample is completed,The earlier the carbonization is,the higher the strength of the sample will be.The strength of the test piece with accelerator was improved obviously.The compressive strength after the carbonized treatment of the sample with accelerator added was 12.0% higher than that without accelerator otherwise the same,and the compressive strength after 28 days carbon treatment was enhanced by 29.0%.Accelerator has a certain influence on the morphology of carbonized product CaCO_3 of cement-steel slag powder composite cementitious material.
引文
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[17]郜效娇,卢豹,蒋伟丽,等.压蒸条件下钢渣的碳化过程[J].材料导报B:研究篇,2016,30(2):106~110.
[2] Shu-Yuan Pan, Rahul Adhikari, Yi-Hung Chen, et al.Integrated and Innovative Steel Slag Utilization for Iron Reclamation,Green Material Production and CO2 Fixation Via Accelerated Carbonation[J].Journal of Cleaner Production,2016,(137):617~631.
[3] N.L.Ukwattage,P.G.Ranjith,X.Li.Steel-making Slag for Mineral Sequestration of Carbon Dioxide by Accelerated Carbonation[J].Measurement,2017(97):15~22.
[4]吴昊泽,张林菊,叶正茂,等.水分对钢渣碳化的影响[J].济南大学学报(自然科学版),2009,23(3):221~224.
[5]吴昊泽,赵华磊,谭文杰,等.颗粒级配对钢渣碳化的影响[J].济南大学学报(自然科学版),2010,24(1):21~24.
[6]胡玉芬.钢渣免烧砖碳化影响因素研究[J].山东科学,2015,28(1):97~101.
[7]史迪.钢渣碳化砖的性能及其影响因素研究[D].北京:中国建筑材料科学研究总院,2012.
[8] E.-E.Chang,Shu-yuan Pan,Yi-hung Chen,et al.CO2 Sequestration by Carbonation of Steel-making Slags in Autoclave Reactor[J].Journal of Hazardous Materials,2011(195):107~114.
[9] E.-E.Chang,An-Chia Chiu,Shu-yuan Pan,et al.Carbonation of Basic-oxygen Furnace Slag with Metalworking Waste-water in a Slurry Reactor[J].International Journal of Greenhouse Gas Contro1,2013(12):382~389.
[10] Ming-Sheng Ko,Ying-Liang Chen,Jhih-Hua Jiang.Accelerated Carbonation of Basic Oxygen Furnace Slag and the Effects on its Mechanical Properties[J].Construction and Building Materials,2015(98):286~293.
[11] A.Polettini,R.Pomi,A.Stramazzo.Carbon Sequestration through Accelerated Carbonation of BOF Slag:Influence of Particle Size Characteristics[J].Chemical Engineering Journal,2016(298):26~35.
[12] Zaid Ghouleh,Rodrick I.L.Guthrie,Yixin Shao.Highstrength KOBM Steel Slag Binder Activated by Carbonation[J].Construction and Building Materials,2015(99):175~183.
[13]张丰,莫立武,邓敏.碳化MgO-CaO-粉煤灰-水泥四元组分制备砂浆的强度和微观结构[J].硅酸盐学报,2015,43(8):1032~1039.
[14]王静茹,常均,房延凤,等.利用水化-碳化耦合作用制备钢渣脱硫灰建材制品[J].粉煤灰,2016(4):17~20.
[15] Susan A.Bernal,Rackel San Nicolas,Rupert J.Myers,et al.MgO Content of Slag Controls Phase Evolution and Structural Changes Induced by Accelerated Carbonation in Alkaliactivated Binders[J].Cement and Concrete Research,2014(57):33~43.
[16] Liwu Mo,Feng Zhang,Min Deng.Mechanical Performance and Microstructure of the Calcium Carbonate Binders Produced by Carbonating Steel Slag Paste under CO2 Curing[J].Cement and Concrete Research,2016(88):217~226.
[17]郜效娇,卢豹,蒋伟丽,等.压蒸条件下钢渣的碳化过程[J].材料导报B:研究篇,2016,30(2):106~110.