复合激发剂对钢渣-矿渣基胶凝材料性能的影响
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摘要
基于正交试验,通过对钢渣-矿渣基胶凝材料外观形貌、抗压强度、水化产物的分析,研究氢氧化钙和激发剂D的复合激发剂对钢渣-矿渣基胶凝材料的安定性及抗压强度的影响。结果表明:与未添加激发剂相比,复合激发剂能显著激发钢渣-矿渣基胶凝材料的活性,改善其安定性;胶凝材料抗压强度影响因素的强弱顺序依次为激发剂D、氢氧化钙、钢渣微粉;钢渣微粉、矿渣微粉、氢氧化钙、激发剂D质量分数分别为40%,53%,3%,4%时,制得的胶凝材料试样体积安定性合格,且抗压强度最大,达15.46 MPa。
By orthogonal experiments, through the analysis of the appearance, pressure-resistance strength and hydration products of steel slag and slag based cementing materials, the effect of the composite activators of calcium hydroxide and activator D on the stability and pressure-resistance strength of the cementing materials was studied.The results show that compared with the materials without activators, the composite activators significantly enhance the activity of the cementing materials and improves its stability. The order of influencing factors on the pressure-resistance strength of cementitious materials is activator D, calcium hydroxide and steel slag powder.When the mass fraction of the steel slag, the slag micropowder, the calcium hydroxide and the activator D is 40%,53%, 3%, and 4%, respectively, the volume stability of the cementitious material samples is qualified, and the pressure-resistance strength reaches the maximum of 15.46 MPa.
By orthogonal experiments, through the analysis of the appearance, pressure-resistance strength and hydration products of steel slag and slag based cementing materials, the effect of the composite activators of calcium hydroxide and activator D on the stability and pressure-resistance strength of the cementing materials was studied.The results show that compared with the materials without activators, the composite activators significantly enhance the activity of the cementing materials and improves its stability. The order of influencing factors on the pressure-resistance strength of cementitious materials is activator D, calcium hydroxide and steel slag powder.When the mass fraction of the steel slag, the slag micropowder, the calcium hydroxide and the activator D is 40%,53%, 3%, and 4%, respectively, the volume stability of the cementitious material samples is qualified, and the pressure-resistance strength reaches the maximum of 15.46 MPa.
引文
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[2]ZHAO J,YAN P,WANG D.Research on mineral characteristics of converter steel slag and its comprehensive utilization of internal and external recycle[J].Journal of Cleaner Production,2017(156):50-61.
[3]邓志豪,王珏,王海川.P2O5对转炉钢渣矿物结构的影响[J].安徽工业大学学报(自然科学版),2014(4):340-344.
[4]王强,黎梦圆,石梦晓.水泥-钢渣-矿渣复合胶凝材料的水化特性[J].硅酸盐学报,2014,42(5):629-634.
[5]高孝钱.半干法脱硫灰在墙体材料中的应用研究[D].马鞍山:安徽工业大学,2013:45-51.
[6]LIU S,LI L.Influence of fineness on the cementitious properties of steel slag[J].Journal of Thermal Analysis&Calorimetry,2014(117):629-634.
[7]费帆,廖龙,欧阳东.钢渣矿渣复合对海工混凝土耐久性影响的试验研究[J].硅酸盐通报,2016(35):4133-4139.
[8]JIN H,WANG Q,YANG J.Influence of steel slag-silica fume complex binder on the properties of concrete[J].Journal of Tsinghua University,2015(55):145-149.
[9]林茂松,樊钧,王琼.用于钢矿粉复合激发剂的试验研究[J].安徽工业大学学报(自然科学版),2015(3):212-216.
[10]RAMI R,JAIN M K.Coal combustion product nonhazardous material for mine fill[J].Environmental Quality Management,2016(25):107-119.
[11]涂昆.掺钢渣、矿渣复合粉胶凝材料性能的研究[D].北京:北京化工大学,2014:20-21.
[12]郭涛.碱钢渣混凝土设计与性能的试验研究[D].西安:西安建筑科技大学,2015:14-15.
[13]苏登成,唐兴国,刘仁越.钢渣活性激发技术研究进展[J].中国水泥,2009(4):57-60.
[14]BISKRI Y,ACHOURA D,CHELGHOUM N.Mechanical and durability characteristics of high performance concrete containing steel slag and crystalized slag as aggregates[J].Construction&Building Materials,2017(150):167-178.