碳纤维增强脱硫灰基保温干混砂浆的性能试验研究
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摘要
利用流化床脱硫灰作为部分胶凝材料,外掺轻质骨料漂珠,制备出了脱硫灰基轻质保温型干混砂浆,本论文研究了脱硫灰、漂珠掺量等与砂浆性能之间的关系。并优化体系较佳配比。结果表明,水灰比为0.53、内掺30%脱硫灰、外掺15%生石灰、轻质骨料漂珠替代河砂24%、胶砂比为1:1.7后的干混砂浆保温性能优良,容重轻质,28 d抗压强度为23.1 MPa,且砂浆保水率、2 h稠度损失率与凝结时间分别为98.7%、7.6%和5.7 h,各项性能均满足GB/T 25181-2010中的标准要求。
Desulfurization ash-based thermal insulation dry-mixed mortar with cement was prepared with desulfurization ash replacing some cementitious materials, and with the addition of light aggregate drift beads. The performance relationship between the amount of desulfurization ash and floating bead on the mortar were researched, and the optimal proportion also been reached in optimized. The results showed that water to cement ratio of 0.53, desulfurization ash replacing of 30% cement,15% quicklime, floating bead replacing of 16% sand, binder-sand ratio of 1:1.7. Performances of thermal insulation owing to its excellent,low density, and compressive strength of 28 d up to 23.1 MPa, water-retention rate, consistency loss rate of2 h and setting time were 98.7%,7.6% and 5.7 h, respectively, which satisfied specific requirements of GB/T25181-2010.
Desulfurization ash-based thermal insulation dry-mixed mortar with cement was prepared with desulfurization ash replacing some cementitious materials, and with the addition of light aggregate drift beads. The performance relationship between the amount of desulfurization ash and floating bead on the mortar were researched, and the optimal proportion also been reached in optimized. The results showed that water to cement ratio of 0.53, desulfurization ash replacing of 30% cement,15% quicklime, floating bead replacing of 16% sand, binder-sand ratio of 1:1.7. Performances of thermal insulation owing to its excellent,low density, and compressive strength of 28 d up to 23.1 MPa, water-retention rate, consistency loss rate of2 h and setting time were 98.7%,7.6% and 5.7 h, respectively, which satisfied specific requirements of GB/T25181-2010.
引文
[1]陈海杰,严捍东.漂珠、珠光砂对玻化微珠保温砂浆性能影响的试验研究[J].福建建设科技,2011(6):36-39.
[2]侯浩波.粉煤灰空心微珠的特性与应用[J].粉煤灰综合利用,1993(1):39-41.
[3]Sheng GH,Li Q,Zhai JP.Investigation on the hydration of CFBC fly ash[J].Fuel,2012,98(8):61-66.
[4]Chao-qiang WANG,Ke-feng TAN,Xiu-xia XU.Pei-xin WANG.Effect of Activators,Admixtures and Temperature on the Early Hydration Performance of Desulfurization ash[J].Construction and Building Materials.70(2014)322-331.
[5]Li XG,Chen QB,Huang KZ,Ma BG,Wu B.Cementitious properties and hydration mechanism of circulating fluidized bed combustion(CFBC)desulfurization ashes[J].Construction and Building Materials,2012,36(11):182-187.
[6]熊锐,任志刚,卢哲安,等.玄武岩纤维增强水泥砂浆力学性能试验研究[J].武汉理工大学学报,2013,35(7):109-112.
[7]梁济丰,吕磊,余晓青.聚乙烯醇纤维增强水泥基复合材料力学性能试验研究[J].混凝土与水泥制品,2013(11):48-51.
[8]李国忠,田颖,赵帅芳.芳纶纤维砂浆的抗折强度与抗塑性收缩开裂[J].建筑材料学报,2009(2):93-105.
[9]卜良桃,吴康权.纤维水泥砂浆钢筋网现场加固RC转换梁共同受力性能研究[J].科学技术与工程,2017,17(6):238-244.
[10]宋远明,钱觉时,刘景相,等.SO3对固硫灰渣胶凝系统水化及性能的影响[J].建筑材料学报,2013,16(4):688-693.
[11]夏艳晴,严云,胡志华,等.化学激发固硫灰的早期水化活性[J].武汉理工大学学报,2012,34(12):9-13.
[12]J Tangpagasit,R Cheerarot,C Jaturapitakkul,K Kiattikomol.Packing effect and pozzolanic reaction of fly ash in mortar[J].Cem Concr Res,2005,35(6):1145-1151.
[13]Y.L.Wong,L.Lam,C.S.Poon,F.P.Zhou.Properties of fly ash-modified cement mortar-aggregate interfaces[J].Cem Concr Res,1999,29(12):1905-1913.
[14]Li XG,Chen QB,Ma BG,Huang J,Jian SW,Wu B.Utilization of modified CFBC desulfurization ash as an admixture in blended cements:Physico-mechanical and hydration characteristics[J].Fuel,2012;102(12):674-680.
[15]布德尼柯夫.石膏的研究与应用[M].增订第3版.北京:中国工业出版社,1963.
[16]朱唐亮,谈至明,顾文飞,等.干法脱硫粉煤灰路用性能的试验研究[J].建筑材料学报,2011,14(6):752-756.
[17]张建新.天然硬石膏水化硬化及活化激发研究[D].重庆:重庆大学硕士论文,2009.
[18]刘宏,刘红宇.固硫灰渣用于预拌砌筑砂浆的试验研究[J].科学技术与工程,2015,15(21):195-198,204.
[2]侯浩波.粉煤灰空心微珠的特性与应用[J].粉煤灰综合利用,1993(1):39-41.
[3]Sheng GH,Li Q,Zhai JP.Investigation on the hydration of CFBC fly ash[J].Fuel,2012,98(8):61-66.
[4]Chao-qiang WANG,Ke-feng TAN,Xiu-xia XU.Pei-xin WANG.Effect of Activators,Admixtures and Temperature on the Early Hydration Performance of Desulfurization ash[J].Construction and Building Materials.70(2014)322-331.
[5]Li XG,Chen QB,Huang KZ,Ma BG,Wu B.Cementitious properties and hydration mechanism of circulating fluidized bed combustion(CFBC)desulfurization ashes[J].Construction and Building Materials,2012,36(11):182-187.
[6]熊锐,任志刚,卢哲安,等.玄武岩纤维增强水泥砂浆力学性能试验研究[J].武汉理工大学学报,2013,35(7):109-112.
[7]梁济丰,吕磊,余晓青.聚乙烯醇纤维增强水泥基复合材料力学性能试验研究[J].混凝土与水泥制品,2013(11):48-51.
[8]李国忠,田颖,赵帅芳.芳纶纤维砂浆的抗折强度与抗塑性收缩开裂[J].建筑材料学报,2009(2):93-105.
[9]卜良桃,吴康权.纤维水泥砂浆钢筋网现场加固RC转换梁共同受力性能研究[J].科学技术与工程,2017,17(6):238-244.
[10]宋远明,钱觉时,刘景相,等.SO3对固硫灰渣胶凝系统水化及性能的影响[J].建筑材料学报,2013,16(4):688-693.
[11]夏艳晴,严云,胡志华,等.化学激发固硫灰的早期水化活性[J].武汉理工大学学报,2012,34(12):9-13.
[12]J Tangpagasit,R Cheerarot,C Jaturapitakkul,K Kiattikomol.Packing effect and pozzolanic reaction of fly ash in mortar[J].Cem Concr Res,2005,35(6):1145-1151.
[13]Y.L.Wong,L.Lam,C.S.Poon,F.P.Zhou.Properties of fly ash-modified cement mortar-aggregate interfaces[J].Cem Concr Res,1999,29(12):1905-1913.
[14]Li XG,Chen QB,Ma BG,Huang J,Jian SW,Wu B.Utilization of modified CFBC desulfurization ash as an admixture in blended cements:Physico-mechanical and hydration characteristics[J].Fuel,2012;102(12):674-680.
[15]布德尼柯夫.石膏的研究与应用[M].增订第3版.北京:中国工业出版社,1963.
[16]朱唐亮,谈至明,顾文飞,等.干法脱硫粉煤灰路用性能的试验研究[J].建筑材料学报,2011,14(6):752-756.
[17]张建新.天然硬石膏水化硬化及活化激发研究[D].重庆:重庆大学硕士论文,2009.
[18]刘宏,刘红宇.固硫灰渣用于预拌砌筑砂浆的试验研究[J].科学技术与工程,2015,15(21):195-198,204.