1 湖南大学土木工程学院,长沙 410082; 2 Centre for Future Materials, University of Southern Queensland,Toowoomba, QLD 4350, Australia
Effects of Steel Fiber on Drying Shrinkage of Ultra High Performance Concrete
WU Linmei1, 2, SHI Caijun1, ZHANG Zuhua1, 2, WANG Hao2
1 College of Civil Engineering, Hunan University, Changsha 410082; 2 Centre for Future Materials,University of Southern Queensland, Toowoomba, QLD 4350, Australia
Abstract: This paper reports the study of the influence of steel fibers on drying shrinkage of ultra-high performance concrete (UHPC) at fiber volume content of 0%, 1%, 2% and 3%, temperature of (20 ± 2) ℃ and relative humidity of (50±5)%. The results showed that during the first 7 days, the drying shrinkage rate of UHPC was very fast, while after 7 days it gradually decreased. The interfacial bonding of steel fiber and the physical properties of steel fiber can effectively reduce the drying shrinkage. However, when the steel fiber exceeds an optimal volume, the effect of steel fiber on drying shrinkage can decrease. Compared with the steel fiber content at 2%, the drying shrinkage of the UHPC with 3% steel fiber was decreased by only 1.5%. The reason is that the increase in the steel fiber leads to an increase in the interface layer, the interface transition zone is usually more porous than the matrix, which easily leads to shrinkage, and consequently reducing the beneficial effect of steel fiber on drying shrinkage control. It was also found that the inhibition of fly ash on the drying shrinkage of UHPC was higher than slag. The experiment also tested the classic dry shrinkage models: the ACI model and the Wang Tiemeng model. Based on the two models and the experimental fitting, a new mathematical model (a combined index model) has been proposed. The results showed that the combined index model fitted better than the two models mentioned above.
1 Gilbert R I. Time effects in concrete structures[J]. Int J Cem Compos Lightweight Concr, 1989, 11(1):60. 2 Wu L, Farzadnia N, et al. Autogenous shrinkage of high performance concrete: A review[J]. Constr Build Mater, 2017,149:62. 3 Barr B, Hoseinian S, Beygi M. Shrinkage of concrete stored in natural environments[J]. Cem Concr Compos, 2003,25(1): 19. 4 Mindess S, Young J, Darwin D. Concrete. Upper saddle river, nj 07458[M]. Prentice Hall, Pearson Education, Inc. 2003. 5 Monteiro P. Concrete: Microstructure, properties, and materials[M]. McGraw-Hill Publishing, 2006. 6 Chern J C, Chan Y W. Deformations of concretes made with blast-furnace slag cement and ordinary portland cement[J]. ACI Mater J, 1989,86(4):372. 7 Khatri R, Sirivivatnanon V, Gross W. Effect of different supplementary cementitious materials on mechanical properties of high performance concrete[J]. Cem Concr Res, 1995,25(1):209. 8 Gao X J. Mechanism and assessment methods of early age cracking of high performance concrete[D]. Harbin: Harbin Institute of Technology, 2003(in Chinese). 高小建. 高性能混凝土早期开裂机理与评价方法[D]. 哈尔滨: 哈尔滨工业大学, 2003. 9 Qin H, Pan G, Sun W. Study on the deformation properties of the high performance concrete with fly ash used in bridge[J]. J Southeast University (Nat Sci Ed), 2002,32(5):779(in Chinese). 秦鸿根, 潘钢华, 孙伟. 掺粉煤灰高性能桥用混凝土变形性能研究[J]. 东南大学学报(自然科学版), 2002,32(5):779. 10 Cai A L, Li S K, Yan S, et al. Influence of curing temperature on drying shrinkage characterristics of portland cement mortar with high doping of fly ash[J]. J Chin Ceram Soc, 2005,33(1):100(in Chinese). 蔡安兰, 李顺凯, 严生, 等. 养护温度对高掺量粉煤灰硅酸盐水泥砂浆干缩性能的影响[J]. 硅酸盐学报, 2005,33(1): 100. 11 Bentz D P, Geiker M R, Hansen K K. Shrinkage-reducing admixtures and early-age desiccation in cement pastes and mortars[J]. Cem Concr Res, 2001,31(7):1075. 12 Rodden R, Lange D. Feasibility of shrinkage reducing admixtures for concrete runway pavements[R]. Technical Note, 2004. 13 Brooks J, Jiang X. The influence of chemical admixtures on restrained drying shrinkage of concrete[J]. Special Publication, 1997,173:249. 14 Folliard K J, Berke N S. Properties of high-performance concrete containing shrinkage-reducing admixture[J]. Cem Concr Res, 1997,27(9):1357. 15 Almudaiheem J A, Hansen W. Effect of specimen size and shape on drying shrinkage of concrete[J]. ACI Mater J, 1987,84(2):130. 16 Hansen W, Almudaiheem J A. Ultimate drying shrinkage of concrete-Influence of major parameters[J]. ACI Mater J, 1987,84(3):217. 17 ?elih J, Bremner T W. Drying of saturated lightweight concrete: An experimental investigation[J]. Mater Struct, 1996,29(7):401. 18 Blais P Y, Couture M. Precast, prestressed pedestrian bridge: World??s first reactive powder concrete structure[J]. PCI J, 1999,44(5):60. 19 Dauriac C. Special concrete may give steel stiff competition[N]. Seattle Daily J Commerce, 1997: 5. 20 Dowd W. Reactive powder concrete: Ultra-high performance cement based composite[C]∥Construction Innovation Forum. Uni-ted States, 1999. 21 Sprince A, Korjakins A, Pakrastinsh L, et al. Early age creep and shrinkage of high performance concrete[C]∥Ultra-High Perfor-mance Concrete and Nanotechnology in Construction Proceedings of Hipermat 2012 3rd International Symposium on UHPC and Nanotechnology for High Performance Construction Mater. 2012:309. 22 Long Guangcheng, Chen Yu. Study on the effect of factors on strength and shrinkage of Rpc200 [J]. Ind Construction, 2002, 32(6):4(in Chinese). 龙广成, 陈瑜. Rpc200 的强度及收缩影响研究[J]. 工业建筑,2002,32(6):4. 23 Tam C M, Tam V W, Ng K M. Assessing drying shrinkage and water permeability of reactive powder concrete produced in hong kong[J]. Constr Build Mater, 2012,26(1):79. 24 Cwirzen A, Penttala V, Vornanen C. Reactive powder based concretes: Mechanical properties, durability and hybrid use with opc[J]. Cem Concr Res, 2008,38(10):1217. 25 Garas V Y, Kahn L F, Kurtis K E. Short-term tensile creep and shrinkage of ultra-high performance concrete[J]. Cem Concr Compos, 2009,31(3):147. 26 Li H Y. Effect of polyacrylic ester on the properties of reactive powder concrete[D]. Changsha: Central South University, 2007(in Chinese). 李会艳. 聚丙烯酸酯对活性粉末混凝土性能的影响研究[D]. 长沙:中南大学, 2007. 27 Wang D H, Shi C J, Wu L M. Reasearch and applocations of ultra-high performance concrete (UHPC) in China[J]. Bull Chin Ceram Soc, 2016,35(1):141(in Chinese). 王德辉, 史才军, 吴林妹. 超高性能混凝土在中国的研究和应用[J]. 硅酸盐通报, 2016,35(1):141. 28 Huang K, Deng M, Mo L, et al. Early age stability of concrete pavement by using hybrid fiber together with mgo expansion agent in high altitude locality[J]. Constr Build Mater, 2013,48: 685. 29 Miao B, Chern J C, Yang C A. Influences of fiber content on prope-rties of self-compacting steel fiber reinforced concrete[J]. J Chin Inst Eng, 2003,26(4):523. 30 Yoo D Y, Shin H O, Yang J M, et al. Material and bond properties of ultra high performance fiber reinforced concrete with micro steel fibers[J]. Composites Part B: Eng, 2014,58:122. 31 Wu X L. Study on prediction model of concrete strength and drying shrinkage[D].Beijing: China Academy of Building Research, 2008 (in Chinese). 吴学利. 混凝土强度和干燥收缩预测模型的研究[D]. 北京:中国建筑科学研究院, 2008. 32 Bazant Z P, Baweja S. Creep and shrinkage prediction model for analysis and design of concrete structures: Model b3[J]. ACI Special Publications, 2000,194:1. 33 Bangham D, Fakhoury N, Mohamed A. The swelling of charcoal. Part ii. Some factors controlling the expansion caused by water, benzene and pyridine vapours[J]. Proceedings of the Royal Society of London Series A, 1932,138(834):162. 34 Acker P, Behloul M. Ductal?? technology: A large spectrum of properties, a wide range of applications[C]∥Proc of the Int Symp on UHPC. Kassel, Germany, 2004. 35 Malhotra V. High-performance high-volume fly ash concrete[J]. Concr Int, 2002,24(7):30. 36 Jiang Z W, Sun Z P, Wang P M, et al. Study on self-desiccation effect of high performance concrete[J]. J Building Mater, 2004,7(1): 19(in Chinese). 蒋正武, 孙振平, 王培铭, 等. 高性能混凝土中自干燥效应的研究[J]. 建筑材料学报, 2004,7(1):19. 37 Mehta P K. Concrete structure, properties and materials[M].New Jersey:Prentice-Hall, 1986. 38 Mehta P K. High-performance, high-volume fly ash concrete for sustainable development[C]∥Proceedings of the International Workshop on Sustainable Development and Concrete Technology. USA, 2004. 39 Subramaniam K V, Gromotka R, Shah S P, et al. Influence of ultrafine fly ash on the early age response and the shrinkage cracking potential of concrete[J]. J Mater Civil Eng, 2005,17(1):45. 40 Gdoutos M K, Shah S, Dattatraya D. Relationships between engineering characteristics and material properties of high strength-high performance concrete[C]∥Role of Concrete In Sustainable Development: Proceedings of the International Symposium. Northwestern Dundee, Scotland, UK., 2003. 41 Tazawa E, Miyazawa S. Influence of constituents and composition on autogenous shrinkage of cementitious materials[J]. Mag Concr Res, 1997,49(178):15. 42 Cusson D, Hoogeveen T. Internal curing of high-performance concrete with pre-soaked fine lightweight aggregate for prevention of autogenous shrinkage cracking[J]. Cem Concr Res, 2008,38(6):757. 43 Ma D H, Shang J L, Li Z Y. Self-shrinkage high performance concrete[J]. J Xi??an University of Architecture & Technology(Natural Science Edition) 2003,35(1):82(in Chinese). 马冬花, 尚建丽, 李占印. 高性能混凝土的自收缩[J]. 西安建筑科技大学学报(自然科学版), 2003,35(1):82. 44 Li Y, Bao J, Guo Y. The relationship between autogenous shrinkage and pore structure of cement paste with mineral admixtures[J]. Constr Build Mater, 2010,24(10):1855. 45 Noushini A, Vessalas K, Arabian G, et al. Drying shrinkage behaviour of fibre reinforced concrete incorporating polyvinyl alcohol fibres and fly ash[J]. Adv Civil Eng, 2014,2014:356. 46 Wu Z, Shi C, Khayat K H. Influence of silica fume content on microstructure development and bond to steel fiber in ultra-high strength cement-based materials (uhsc)[J]. Cem Concr Compos, 2016,71:97. 47 Habel K, Viviani M, Denarié E, et al. Development of the mechanical properties of an ultra-high performance fiber reinforced concrete (uhpfrc)[J]. Cem Concr Res, 2006,36(7):1362. 48 Saje D, Saje F. Autogenous shrinkage development in HPC[C]∥International Conference on High Performance Materials in Bridges.Hawaii, 2003. 49 Turatsinze A, Farhat H, Granju J L. Influence of autogenous cracking on the durability of repairs by cement-based overlays reinforced with metal fibres[J]. Mater Struct, 2003,36(10):673.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2017, Vol. 31 
