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硅酸盐水泥-阳离子乳化沥青浆体的流变模型

DOI: 10.7521/j.issn.0454-5648.2014.05.11

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Abstract:

硅酸盐水泥-乳化沥青浆体的流变性决定了水泥乳化沥青砂浆的施工性能,并影响高速铁路板式无砟轨道砂浆充填层的施工质量和耐久性。采用P×II52.5R硅酸盐水泥、阳离子乳化沥青以不同的水泥/沥青质量比、水泥/浆体体积比和固体体积分数,制备硅酸盐水泥-阳离子乳化沥青(PC-CEA)浆体。在25℃用同轴旋转流变仪测量各种PC-CEA浆体的流变曲线。用不同流变模型拟合实测的PC-CEA浆体的剪切应力和剪切应变数据。结果表明PC-CEA浆体具有屈服应力和触变性,并主要呈剪切变稀行为;依据拟合良好性,Herschel-Bulkley模型最适合表征PC-CEA浆体流变性;由该模型拟合获得的PC-CEA浆体的屈服应力和稠度系数随浆体中水泥/浆体体积比增加而增加,随固体体积分数的减小而减小;当固体体积分数≤40%时,PC-CEA浆体可出现剪切增稠行为。

References

[1]  COENRAAD E. Recent development in slab track [J]. Eur Railway Rev, 2003, 9(2): 81-85.
[2]  SHIGERU M, HIDEYUKI T, MASAO U, et al. The mechanism of railway tracks [J]. Jpn Railway Transport Rev, 1998, 15(3): 38-45.
[3]  TAKAI H. 40 years experiences of the slab track on Japanese high speed lines [C]//Proc of 1st Cof. Valencia: Basque Department of Transport and Public Works Euskal Trenbide Sarea, 2007: 234-246.
[4]  MUURATA O. Overview of recent structure technology R&D at RTRI [J]. Quart Report RITI (Railway Technical Research Institute), 2003, 44(4): 133-135.
[5]  KATSUOSHI A. Development of slab tracks for Hokuriku Shinkansen line [J]. Quarterly Report of RITI (Railway Technical Research Institute), 2001, 42(1): 35-41.
[6]  WANG F Z, WANG T, HU S G, et al. Rheological behavior of cement asphalt mortar [J]. English J Wuhan Univ, (2008), 41(4): 69–72.
[7]  孔祥明, 张艳荣, 张敬义,等. 新拌水泥沥青浆体的流动性及显微结构研究[J]. 建筑材料学报, 2011, 14(4): 569- 575.
[8]  ??? KONG Xiangming, ZHANG Yanrong, ZHANG Jingyi, et al. J Build Mater, 2011, 14 (4): 569-575.
[9]  张艳荣, 孔祥明, 曹恩祥,等. 温度对新拌水泥沥青浆体流动性和水化速率的影响[J]. 硅酸盐学报, 2010, 38(11): 2171-2177.
[10]  ???? ZHANG Yanrong, KONG Xiangming, CAO Enxiang, et al. J Chin Ceram Soc, 2010, 38(11): 2171-2177.
[11]  ZHANG Yanrong, KONG Xiangming, HOU Shanshan, et al. Study on the rheological properties of fresh cement asphalt paste [J]. Construct Build Mater, 2012, 37(1): 534-544.
[12]  ATZENI C, MASSIDDA L, SANNA U. Comparison between rheological models for Portland cement pastes[J]. Cem Concr Res, 1985, 15 (3): 511 –519.
[13]  PAPO A. Rheological models for cement pastes[J]. Mater Struct, 1988, 21(1): 41-46.
[14]  ? ZHOU J Z Q, FANG Tunan, LUO Guihua, et al. Yield stress and maximum packing fraction of concentrated suspensions[J]. Rheol Acta, 1995, 34:544-561.
[15]  CYR M, LEGRAND C, MOURET M, et al. Study of the shear thickening effect of superplasticizers on the rheological behaviour of cement pastes containing or not mineral additives [J]. Cem Concr Res, 2000 (30): 1477 -1483.
[16]  梁冰瑞, 陈昌国, 张洪武. 复合乳化沥青的流变特性研究[J]. 应用化工, 2010, 39(7): 1012-1015.
[17]  LIANG Bingrui, CHEN Changguo, ZHANG Hongwu. Appl Chem Ind, 2010, 39(7): 1012-1015.
[18]  

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