Journal of Textile Research ›› 2021, Vol. 42 ›› Issue (10): 53-60.doi: 10.13475/j.fzxb.20201104208

• Fiber Materials • Previous Articles     Next Articles

Preparation and mechanical properties of cementitious composites reinforced by modified polyvinyl alcohol fiber

WEI Fayun1,2, YANG Fan3, WANG Hailou3, YU Bin1, ZOU Xueshu3, ZHANG Wei3()   

  1. 1. College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
    2. Xinglin College, Nantong University, Nantong, Jiangsu 226236, China
    3. School of Textile and Clothing, Nantong University, Nantong, Jiangsu 226019, China
  • Received:2020-11-19 Revised:2021-06-03 Online:2021-10-15 Published:2021-10-29
  • Contact: ZHANG Wei E-mail:zhangwei@ntu.edu.cn

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Abstract:

In order to improve the interface bonding strength between polyvinyl alcohol (PVA)fiber and cement, silica nanoparticles (SiO2 NPs) were grafted on the surface of PVA fiber to prepare modified PVA fiber reinforced cementitious composites (PVA-FRCC). The bending strength of PVA-FRCC was evaluated by three-point bending test, and the influences of fiber arrangement direction and layer number on the bending strength were studied. The results show that the bending strength of PVA-FRCC with cross arrangement is better than that of longitudinal or transverse arrangement. The bending strength of composite reinforced by modified PVA fiber is higher than that with unmodified fiber. The bending strength of modified PVA-FRCC is the best when the number of fiber layers is 3. In the finite element analysis of bending process, when the failure occurs, the transverse fibers in PVA-FRCC present an obvious bridging function. Meanwhile, the longitudinal fibers in the cross-arranged PVA-FRCC could bear a low load while the transverse arranged fibers bear the main load and show no interface damage after failure.

Key words: PVA fiber, silicon dioxide, graft modification, cementitious composite, bending strength

CLC Number: 

  • TU528.58

Fig.1

Schematic diagram of bending sample preparation. (a) Mold for bending samples; (b) Fiber arrangement"

Fig.2

Finite element model of PVA-FRCC. (a) Geometric model; (b) Finite element model"

Fig.3

SEM images of PVA fiber before(a)and after(b)modification"

Tab.1

Surface element content of modified and unmodifiedPVA fiber%"

处理方法 C O Si
未改性 69.53 29.62 0.00
改性后 68.12 29.94 0.99

Fig.4

Relationship between bending strength and number of fiber transverse laying layers of PVA-FRCC under different curing time"

Fig.5

Relationship between bending strength and number of longitudinal laying fiber layers of PVA-FRCC under different curing time"

Fig.6

Relationship between bending strength and number of fiber cross laying layers of PVA-FRCC under different curing time"

Fig.7

Bending strength of modified and unmodified PVA-FRCC with different arrangement. (a) Transverse; (b) Longitudinal; (c) Cross"

Fig.8

Failure morphologies after bending tests"

Fig.9

Finite element analysis of PVA-FRCC with transverse arrangement.(a) Stress distribution before failure;(b) Interface damage distribution after failure"

Fig.10

Finite element analysis of PVA-FRCC with cross arrangement. (a) Stress distribution before failure; (b) Interface damage distribution after failure"

[1] MANDER J B, PRIESTLEY M J N, PARK R. Theoretical stress‐strain model for confined concrete[J]. Journal of Structural Engineering, 1988, 114(8):1804-1826.
doi: 10.1061/(ASCE)0733-9445(1988)114:8(1804)
[2] 俞巧珍, 熊杰. 纤维增强水泥基复合材料研究的若干问题探讨[J]. 浙江工程学院学报, 2002, 19(4):254-259.
YU Qiaozhen, XIONG Jie. Several key problems in the study of fiber-reinforced cement composite materials[J]. Journal of Zhejiang Sci-Tech University, 2002, 19(4):254-259.
[3] ONUAGULUCHI O, BANTHIA N . Plant-based natural fiber reinforced cement composites: a review[J]. Cement Concrete Composites, 2016, 68:96-108.
doi: 10.1016/j.cemconcomp.2016.02.014
[4] NISHIWAKI T, SASAKI H, KWON S M . Experimental study on self-healing effect of FRCC with PVA fibers and additives[J]. Journal of Ceramic Processing Research, 2015, 16(1):89-94.
[5] LI V C, WU C, WANG S X, et al. Interface tailoring for strain-hardening polyvinyl alcohol-engineered cementitious composite (PVA-ECC)[J]. Aci Materials Journal, 2002, 99(5):463-472.
[6] LAWAN I, QIANG L, ZHOU W M, et al. Modifications of hemp twine for use as a fiber in cement composite: effects of hybrid treatments[J]. Cellulose, 2018, 25(3):2009-2020.
doi: 10.1007/s10570-018-1668-8
[7] TORRES R B, SANTOS J C D, PANZERA T H. Hybrid glass fibre reinforced composites containing silica and cement microparticles based on a design of experiment[J]. Polymer Testing, 2017, 57:87-93.
doi: 10.1016/j.polymertesting.2016.11.012
[8] SANTOS L, TALEGHANI A D, LI G . Nanosilica-treated shape memory polymer fibers to strengthen wellbore cement[J]. Journal of Petroleum Science and Engineering, 2020, 196:107646.
doi: 10.1016/j.petrol.2020.107646
[9] FU X, LU W, CHUNG D D L. Improving the strain-sensing ability of carbon fiber-reinforced cement by ozone treatment of the fibers[J]. Cement and Concrete Research, 1998, 28(2):183-187.
doi: 10.1016/S0008-8846(97)00265-2
[10] ZHANG W, XU X, WEI F, et al. Influence of dielectric barrier discharge treatment on surface structure of polyoxymethylene fiber and interfacial interaction with cement[J]. Materials, 2018, 11(10):1873.
doi: 10.3390/ma11101873
[11] CHEN L, SUN W W, CHEN B C, et al. A comparative study on blast-resistant performance of steel and pva fiber-reinforced concrete: experimental and numerical analyses[J]. Crystals, 2020, 10(8):707.
doi: 10.3390/cryst10080707
[12] YANG E H, YANG Y, SHI Y, et al. Use of high volumes of fly ash to improve FRCC mechanical properties and material greenness[J]. ACI Materials Journal, 2007, 104(6):620-628.
[13] QING Y, ZENAN Z, DEYU K, et al. Influence of nano-SiO2 addition on properties of hardened cement paste as compared with silica fume[J]. Construction and Building Materials, 2007, 21(3):539-545.
doi: 10.1016/j.conbuildmat.2005.09.001
[14] WU Z, KHAYAT K H, SHI C . Effect of nano-SiO2 particles and curing time on development of fiber-matrix bond properties and microstructure of ultra-high strength concrete[J]. Cement and Concrete Research, 2017, 95:247-256.
doi: 10.1016/j.cemconres.2017.02.031
[15] CHAN Y W, CHU S H . Effect of silica fume on steel fiber bond characteristics in reactive powder concrete[J]. Cement and Concrete Research, 2004, 34(7):1167-1172.
doi: 10.1016/j.cemconres.2003.12.023
[16] ZHANG W, ZOU X, WEI F, et al. Grafting SiO2 nanoparticles on polyvinyl alcohol fibers to enhance the interfacial bonding strength with cement[J]. Composites Part B, 2019, 162:500-507.
doi: 10.1016/j.compositesb.2019.01.034
[17] 李贺东, 徐世烺. 超高韧性水泥基复合材料弯曲性能及韧性评价方法[J]. 土木工程学报, 2010, 43(3):33-38.
LI Hedong, XU Shilang. Research on flexural properties and flexural toughness evaluation method of ultra high toughness cementitious composites[J]. China Civil Engineering Journal, 2010, 43(3):33-38.
[18] 李永鹏, 何锐, 稽绍华, 等. 界面处理对混杂纤维混凝土弯曲性能的影响[J]. 武汉理工大学学报, 2013, 35(4):27-31.
LI Yongpeng, HE Rui, JI Shaohua, et al. Impact of enhanced interface treatment on flexural properties of fiber reinforced concrete[J]. Journal of Wuhan University of Technology, 2013, 35(4):27-31.
[1] . Study on Preparation and Mechanical Properties of Modified Polyvinyl Alcohol Fiber [J]. , 2021, 42(10): 0-0.
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[7] LI Shu-feng;CHENG Bo-wen;SUN Kun-song;SONG Hao-jiang. Test on the properties of the fire retardant common viscose fiber prepared by graft modification [J]. JOURNAL OF TEXTILE RESEARCH, 2006, 27(8): 61-63.
[8] WU Min;CHENG Xiu-ping;GE Ming-qiao. Research on the dispersing method of nanometer SiO2 [J]. JOURNAL OF TEXTILE RESEARCH, 2006, 27(4): 80-82.
[9] LI Shu-feng;CHENG Bo-wen;SUN Kun-song;SONG Hao-jiang. Study on the flame retardant HWM viscose fibers modified by grafting [J]. JOURNAL OF TEXTILE RESEARCH, 2006, 27(4): 60-62.
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