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温度对新拌水泥沥青浆体流动性和水化速率的影响

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Abstract:

研究了温度对不同沥青含量的新拌水泥沥青浆的流动性和水化速率的影响,以揭示该类复合胶凝材料流动性和水化速率的温度敏感性规律。在0,20℃和40℃下测量浆体的扩展度,获得了流动性随温度变化的基本规律。通过测定新拌浆体凝结硬化过程中半绝热温升来研究温度对水泥水化过程的影响。结果表明随温度的降低,水泥水化速率下降,浆体初始流动性和流动保持性增强;随沥青掺量的增大,初始流动性和水化速率的温度敏感性降低,流动保持性的温度敏感性增大;含阳离子乳化沥青的浆体初始流动性、流动保持性以及水泥水化延缓程度受温度的影响均大于含阴离子乳化沥青的浆体。水泥水化、乳化沥青在水泥颗粒表面的吸附以及沥青的破乳是决定新拌水泥沥青浆流动性的关键因素。

References

[1]  左景奇, 姜其斌, 傅代正. 板式轨道弹性垫层CA砂浆的研究[J]. 铁道建筑, 2005 (9): 96–98. ZUO Jingqi, JIANG Qibin, FU Daizheng. Railway Eng (in Chinese), 2005 (9): 96–98. [2] 赵东田, 王铁成, 刘学毅, 等. 板式无砟轨道CA砂浆的配置和性能[J]. 天津大学学报, 2008, 41(7): 793–798. ZHAO Dongtian, WANG Tiecheng, LIU Xueyi, et al. J Tianjin Univ (in Chinese), 2008, 41(7): 793–798. [3] 孔祥明, 刘永亮, 阎培渝. 加载速率对水泥沥青砂浆力学性能的影响[J]. 建筑材料学报, 2010, 13(2): 187–192. KONG Xiangming, LIU Yongliang, YAN Peiyu. J Build Mater (in Chi-nese), 2010, 13(2): 187–192. [4] 刘永亮, 孔祥明, 邹炎, 等. 水泥沥青砂浆静动态力学行为[J]. 铁道科学与工程, 2009, 41(7): 794–800. LIU Yongliang, KONG Xiangming, ZOU Yan, et al. J Railway Sci Eng (in Chinese), 2009, 41(7): 794–800. [5] 王发洲, 王涛, 胡曙光, 等. CA砂浆的流变特性[J]. 武汉大学学报(工学版), 2008, 41(4): 69–72. WANG Fazhou, WANG Tao, HU Shuguang, et al. Eng J Wuhan Univ (in Chinese), 2008, 41(4): 69–72. [6] 科技基. 客运专线铁路CRTSⅡ型板式无砟轨道水泥沥青砂浆暂行技术条件[S]. 北京: 中国铁道出版社, 2008. Technology-based. Tentative technical specification for cement asphalt mortar in CRTSⅡ ballastless slab track of passenger dedicated rail-way [S]. Beijing: China Railway Press, 2008. [7] JEAN Y P, ERIC W, KAMAL H K. Effect of temperature on the rheology of flowable mortars [J]. Cem Concr Compos, 2010, 32(2010): 43–53. [8] NEHDI M, MARTINI S A. Estimating time and temperature dependent yield stress of cement paste using oscillatory rheology and genetic al-gorithms [J]. Cem Concr Res, 2009, 39(2009): 1007–1016. [9] KONG Xiangming, Li Qihong. Properties and microstructure of poly-mer modified mortar based on different acrylate latexes [J](Eng). J Chin Ceram Soc (in Chinese), 2009, 37(1): 107–114. [10] JEAN Y P, KAMAL H K, ERIC W. Coupled effect of time and tem-perature on variations of plastic viscosity of highly flowable mortar [J]. Cem Concr Res, 2009, 39(2009): 165–170. [11] 王子明. “水泥–水–高效减水剂”系统的界面化学现象与流变性能[D]. 北京: 北京工业大学, 2006. WANG Ziming. The interface chemistry phenomena and rheological properties of “cement-water-superplasticizer” system (in Chinese, dissertation). Beijing: Beijing University of Technology, 2006. [12] JON E W. Relationship between the bingham parameters and slump [J]. Cem Concr Res, 2006, 36(2006): 1214–1221. [13] LI Z G, TAKA-AKI O, YASUO T. Yield model of high fluidity con crete in fresh state [J]. J Mater in Civ Eng, 2004, 16(3): 195–201. [14] 王涛. 高速铁路板式无碴轨道CA砂浆的研究与应用[D]. 武汉: 武汉理工大学, 2008. WANG Tao. Research and application on CA mortar in ballastless slab track of high speed railway (in Chinese, dissertation). Wuhan: Wuhan University of Technology, 2008. [15] 徐健, 陈志华, 王凯, 等. 板式无碴轨道垫层CA砂浆研究与进展[J]. 华东交通大学学报, 2009, 26(4): 58–62. XU Jian, CHEN Zhihua, WANG Kai, et al. J East Chin Jiaotong Univ (in Chinese), 2009, 26(4): 58–62.

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