Effect of Rheological Properties on Stability and Appearance of Cast Concrete
WU Bin1, AN Xiaopeng1, SHI Caijun2, WEI Ziyi1, YUAN Qiang3
1 State Key Laboratory of Green Building Materials, China Building Materials Academy, Beijing 100024, China; 2 Key Laboratory for Green and Advanced Civil Engineering Materials and Application Technology of Hunan Province, College of Civil Engineering, Hunan University, Changsha 410082, China; 3 National Engineering Laboratory for High Speed Railway Construction, School of Civil Engineering, Central South University, Changsha 410075, China
Abstract: In this paper, the aggregate gradation and cementing material were consistent, the rheological parameters were changed by different dosage of SP(%) and w/c(%), and the effect of rheological parameters and the interaction between aggregates on stability and appearance of cast concrete were investigated under different vibrating conditions. The results show that it is easy to increase the proportion of the surface defects after casting caused by insufficient filling ability in the case of higher yield stress and viscosity; uneven distribution of aggregates after casting resulting from segregation were found with the lower plastic viscosity and yield stress. It was also observed that in the case of shorter vibration or rest, the stability of concrete is affected by the yield stress and plastic viscosity; as the vibration is strengthened, the plastic viscosity plays a decisive role in stability. In addition, the appearance quality of the concrete after casting is affected by the yield stress and the viscosity, but as the vibration is strengthened, the effect of the plastic viscosity is weakened. It could be effective to provide references and evidence to control the stability and appearance quality of concrete by adjusting concrete rheological parameters.
作者简介: 武斌,2019年7月毕业于中国建筑材料科学研究总院,获得工程硕士学位。主要从事新拌混凝土流变领域的研究;安晓鹏,中国建筑材料科学研究总院,中级工程师。主要从事新拌混凝土的流变及废弃物的利用和处理;史才军,国家第二批“千人计划”特聘专家、湖南省特聘专家、亚洲混凝土联合会副主席、湖南大学985工程创新平台首席科学家、特聘教授、博士生导师,Taylor and Francis 学术期刊Journal of Sustainable Cement-based Materials创刊主编,Journal of Ceramics in Modern Technologies共同主编、中国硅酸盐学会会刊《硅酸盐学报》副主编,Elsevier著名学术期刊Cement and Concrete Research和Cement and Concrete Composites、Construction and Building Materials、Taylor & Francis学术期刊Journal of Structural Integrity and Maintenance、西班牙Materiales de Construccion、《材料导报》《建筑材料学报》《重庆交通大学学报》及《中国水泥》等期刊编委。在水泥和混凝土材料的设计、测试、耐久性、智能防渗漏材料及废物的利用和处置方面做了广泛深入的研究工作,发表高水平学术论文300余篇。出版英文著作7部,中文著作3部,合编国际会议英文论文集6本。2014年获湖南省“潇湘友谊”奖。2015—2017年“建设与建造”领域中国高被引学者,2016年全球土木工程领域高被引学者,2001年、2007年和2016年分别当选为国际能源研究会、美国混凝土学会及国际材料与结构研究实验联合会会士。
引用本文:
武斌, 安晓鹏, 史才军, 魏子易, 元强. 混凝土流变特性对其稳定性及浇筑后外观质量的影响[J]. 材料导报, 2020, 34(4): 4043-4048.
WU Bin, AN Xiaopeng, SHI Caijun, WEI Ziyi, YUAN Qiang. Effect of Rheological Properties on Stability and Appearance of Cast Concrete. Materials Reports, 2020, 34(4): 4043-4048.
1 Saak A W, Jennings H M, Shah S P. Materials Journal, 2001, 98(6),429. 2 Roussel N. Materials and Structures, 2006, 39(1), 81. 3 Shen L, Struble L, Lange D. ACI Materials Journal, 2009, 106(4), 367. 4 Wallevik O H, Wallevik J E. Cement and Concrete Research, 2011, 41(12), 1279. 5 Han J, Wang K, Wang X, et al. Construction and Building Materials, 2016, 127,30. 6 Esmaeilkhanian B, Khayat K H, Yahia A, et al. Cement and Concrete Composites, 2014,54,21. 7 Esmaeilkhanian B, Diederich P, Khayat K H, et al. Materials and Structures, 2017, 50(1), 39. 8 Abebe Y A, Lohaus L. Construction and Building Materials, 2017, 131,517. 9 Safawi M I, Iwaki I, Miura T. Cement and Concrete Research, 2004, 34(2), 219. 10 Farris R J. Transsocrheology, 1968, 12(2), 281. 11 Chateau X, Ovarlez G, Trung K L. Journal of Rheology, 2008, 52(2), 489. 12 Noor M A, Uomoto T. Materials & Structures, 2004, 37(8),513. 13 Banfill P F G, Yongmo X, Domone P L J. Magazine of Concrete Research, 1999, 51(3), 181. 14 Petrou M F, Harries K A, Gadala-Maria F, et al. Cement & Concrete Research, 2000,30,809. 15 Megid W A, Khayat K H. Cement & Concrete Composites, 2018, 93,75. 16 Chia K S, Zhang M H. Magazine of Concrete Research, 2004, 56(8), 465.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2020, Vol. 34 
