养护温度与粉煤灰掺量对钙镁复合膨胀剂膨胀效能的影响

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发布时间：2020-01-06 00:00:00

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养护温度与粉煤灰掺量对钙镁复合膨胀剂膨胀效能的影响

Effect of Curing Temperature and Fly Ash Content on the Expansion Performance of Calcium-magnesium Composite Expansion Agent

2021年第11期

养护温度；粉煤灰；限制膨胀率；钙镁复合膨胀剂；膨胀抑制

Curing temperature; Fly ash; Limiting expansion rate; Calcium-magnesium compound expansion agent; Expansion inhibition

2021年第11期

10.19761/j.1000-4637.2021.11.029.05

广东省重点领域研发计划项目（2019B111106002）。

盛智博1，于方1，肖尹文2，杨海成1，邓春林1

1.中交四航工程研究院有限公司水工构造物耐久性技术交通运输行业重点试验室，广东广州 510230；2.河海大学力学与材料学院，江苏南京 210098

盛智博1，于方1，肖尹文2，杨海成1，邓春林1

盛智博,于方,肖尹文,等.养护温度与粉煤灰掺量对钙镁复合膨胀剂膨胀效能的影响[J].混凝土与水泥制品,2021(11):29-33.

SHENG Z B,YU F,XIAO Y W,et al.Effect of Curing Temperature and Fly Ash Content on the Expansion Performance of Calcium-magnesium Composite Expansion Agent[J].China Concrete and Cement Products,2021(11):29-33.

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摘要：开展了养护温度（20 ℃、40 ℃、60 ℃）和粉煤灰掺量（10%、20%、30%）对掺钙镁复合膨胀剂（CM）砂浆膨胀效能的影响研究，并结合微观测试手段，分析了其影响机理。结果表明：CM对温度较为敏感，养护温度越高，CM水化速率越快，膨胀量增幅越大；20~60 ℃时，粉煤灰可显著抑制CM的膨胀，且粉煤灰掺量越大，对CM的抑制作用越明显；CM中CaO组分反应速率较快，其水化产物Ca(OH)2有效促进了MgO的水化。 Abstract: The effect of curing temperature(20 ℃, 40 ℃, 60 ℃) and fly ash content(10%、20%、30%) on the expansion performance of calcium-magnesium composite expansion agent(CM) mortar was carried out. Through the use of a series of micro-testing methods, the influence mechanism was analyzed. The results show that CM is more sensitive to temperature. The higher the curing temperature, the faster the hydration rate of CM, the greater the increase in expansion. When the curing temperature is 20~60 ℃, the expansion of CM is significantly inhibited by fly ash, and the greater the amount of fly ash, the more obvious the expansion efficiency of CM is inhibited. The CaO component of CM has a faster reaction rate. The hydration product Ca(OH)2 is an alkaline environment created by MgO, which promotes the hydration of MgO.

英文名 : Effect of Curing Temperature and Fly Ash Content on the Expansion Performance of Calcium-magnesium Composite Expansion Agent

刊期 : 2021年第11期

关键词 : 养护温度；粉煤灰；限制膨胀率；钙镁复合膨胀剂；膨胀抑制

Key words : Curing temperature; Fly ash; Limiting expansion rate; Calcium-magnesium compound expansion agent; Expansion inhibition

刊期 : 2021年第11期

DOI : 10.19761/j.1000-4637.2021.11.029.05

文章编号 :

基金项目 : 广东省重点领域研发计划项目（2019B111106002）。

作者 : 盛智博1，于方1，肖尹文2，杨海成1，邓春林1

单位 : 1.中交四航工程研究院有限公司水工构造物耐久性技术交通运输行业重点试验室，广东广州 510230；2.河海大学力学与材料学院，江苏南京 210098

盛智博1，于方1，肖尹文2，杨海成1，邓春林1

盛智博,于方,肖尹文,等.养护温度与粉煤灰掺量对钙镁复合膨胀剂膨胀效能的影响[J].混凝土与水泥制品,2021(11):29-33.

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摘要

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参考文献

引用本文

Abstract: The effect of curing temperature(20 ℃, 40 ℃, 60 ℃) and fly ash content(10%、20%、30%) on the expansion performance of calcium-magnesium composite expansion agent(CM) mortar was carried out. Through the use of a series of micro-testing methods, the influence mechanism was analyzed. The results show that CM is more sensitive to temperature. The higher the curing temperature, the faster the hydration rate of CM, the greater the increase in expansion. When the curing temperature is 20~60 ℃, the expansion of CM is significantly inhibited by fly ash, and the greater the amount of fly ash, the more obvious the expansion efficiency of CM is inhibited. The CaO component of CM has a faster reaction rate. The hydration product Ca(OH)₂ is an alkaline environment created by MgO, which promotes the hydration of MgO.

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[1] 吴中伟.膨胀混凝土[M].北京:中国铁道出版社,1990.
[2] 江云安,廉慧珍.采用膨胀剂抑制混凝土的收缩与开裂[J].膨胀剂与膨胀混凝土,2006(2):11-15.
[3] 柯昌君,苏达根.掺UEA地下室混凝土顶板开裂原因分析[J].建筑技术开发,2003,30(10):54-55.
[4] 席耀中.关于膨胀混凝土若干问题的讨论[J].混凝土与水泥制品,2007(5):1-5.
[5] 陆安群,王育江,田倩,等.钙镁复合膨胀剂的技术特点及其在地下工程中的应用[J].徐州工程学院学报(自然科学版),2019,34(1):72-76.
[6] 曹丰泽,高玉亭,张慧杰,等.MgO膨胀剂在大体积混凝土结构中的抗裂效果研究[J].混凝土与水泥制品,2021(8):24-27.
[7] 向飞,郭晓,刘勇,等.温湿度变化对CaO类膨胀剂膨胀性能的影响[J].膨胀剂与膨胀混凝土,2018(2):21-24.
[8] 郭舒,刘加平,田倩,等.水胶比和温度对掺CaO膨胀熟料的水泥胶凝材料性能的影响[J].混凝土与水泥制品,2013(4):5-9.
[9] MO L,DENG M,TANG M.Effects of calcination condition on expansion property of MgO-type expansive agent used in cement-based materials[J].Cement and Concrete Research,2010,40(3):437-446.
[10] 陆安群,田倩,李华,等.煅烧制度对MgO膨胀剂组成结构及膨胀性能的影响[J].混凝土与水泥制品,2017(4):12-16.
[11] 王育江.MgO水化动力学及温度敏感性分析[C].北京:中国硅酸盐学会膨胀与自应力混凝土专业委员会,2010:217-222.
[12] 卞桂荣,李宝枝,李明,等.变温历程对混凝土抗裂效能的影响[J].混凝土与水泥制品,2021(2)：23-26.
[13] ZHANG G,LI G.Effects of mineral admixtures and additional gypsum on the expansion performance of sulphoaluminate expansive agent at simulation of mass concrete environment[J].Construction and Building Materials,2016,113:970-978.
[14] 胡建勤,管斌君,何庆丰.粉煤灰对混凝土补偿收缩性能的影响[J].混凝土与水泥制品,2001(2):15-17.
[15] 夏威,张江海.高钙粉煤灰用于高性能混凝土体积稳定剂的研究[J].混凝土与水泥制品,2005(3):5-10.
[16] GAO P W,XIAO L L,HUI L,et al.Effects of fly ash on the properties of environmentally friendly dam concrete[J].Fuel,2006,86(7):1208-1211.
[17] 苗苗.胶凝材料组成和温度对补偿收缩混凝土变形性能的影响[D].北京:清华大学,2012.
[18] 冯竟竟,苗苗,阎培渝.补偿收缩复合胶凝材料的水化与膨胀性能[J].建筑材料学报,2012,15(4):439-445.
[19] GHOSH S N.水泥技术进展[M].杨南如,译.北京:中国建筑工业出版社,1986.
[20] YAN P Y,QIN X,YANG W Y,et al.The semiquantitative determination and morphology of ettringite in pastes containing expansive agent cured in elevated temperature[J].Cement and Concrete Research,2001,31(9):1285-1290.
[21] 韩方晖.复合胶凝材料水化特性及动力学研究[D].北京:中国矿业大学,2015.
[22] GALLUCCI E,ZHANG X,SCRIVENER K L.Effect of temperature on the microstructure of calcium silicate hydrate (C-S-H)[J].Cement and Concrete Research,2013,53:185-195.
[23] 周龙龙,王舜,苗苗,等.养护条件对MgO膨胀剂膨胀性能的影响[J].混凝土与水泥制品,2021(1):34-38.
[24] 曹丰泽,阎培渝.混凝土膨胀剂水化特性与反应产物微观形貌的研究进展[J].电子显微学报,2017,36(2):187-193.
[25] 邓敏,崔雪华,刘元湛,等.水泥中氧化镁的膨胀机理[J].南京化工学院学报(自然科学版),1990,12(4):1-11.
[26] 陈胡星.氧化镁微膨胀水泥-粉煤灰胶凝材料的膨胀性能及孔结构特征[J].硅酸盐学报,2005(4):516-519.
[27] 冉璟,钟贻辉,李晓勇.MgO水泥的膨胀性能研究[J].水电站设计,2008,24(3):66-68.

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养护温度与粉煤灰掺量对钙镁复合膨胀剂膨胀效能的影响

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