[1] Dong Chenghao, Li Tao, Zhang Yamei, Liu Jiaping, et al. Damage process and performance of PVA fiber-reinforcedalkali-activated slag mortar plate under bending [J]. Journal of Southeast University (English Edition), 2018, 34 (2): 229-236. [doi:10.3969/j.issn.1003-7985.2018.02.013]

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Damage process and performance of PVA fiber-reinforcedalkali-activated slag mortar plate under bending()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

34

Issue:

2018 2

Page:

229-236

Research Field:

Materials Sciences and Engineering

Publishing date:

2018-06-20

Info

Title:

Damage process and performance of PVA fiber-reinforcedalkali-activated slag mortar plate under bending

Author(s):

Dong Chenghao¹;  Li Tao¹;  Zhang Yamei¹;  Liu Jiaping²

¹School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
²Jiangsu Key Laboratory of Construction Materials, Southeast University, Nanjing 211189, China

Keywords:

alkali-activated slag;  polyvinyl alcohol fiber;  bend;  acoustic emission;  damage process

PACS:

TU528.572

DOI:

10.3969/j.issn.1003-7985.2018.02.013

Abstract:

The effects of unoiled polyvinyl alcohol(PVA)fiber with four different volume fractions of 0%, 1.0%, 1.5% and 2.0% on the bending properties of alkali-activated slag(AAS)mortar plates were studied. Meanwhile, the acoustic emission(AE)technique and a high-speed camera were utilized to detect the crack development over the complete damage process, and the scanning electronic microscopy(SEM)was used to observe the fiber-matrix interface. Test results show that PVA fibers play a significant role in the toughness improvement of AAS plates. However, the enhancing effect of PVA fibers on the bending behaviour of AAS plates at 120 d is not as remarkable as at early ages. It is observed that the failure process of the PVA fiber-reinforced alkali-activated slag plate can be divided into three stages: elastic stage, main crack formation stage and post-peak load stage. Observations on the fracture surface of specimens indicate that the deterioration process of specimens under bending changed from fiber pull-out at 3 and 28 d to fiber fracture at 120 d.

References:

[1] Li Z, Ding Z, Zhang Y. Development of sustainable cementitious materials[C]//Proceedings of International Workshop on Sustainable Development and Concrete Technology. Beijing, China, 2004: 55-76.(in Chinese)
[2] Davidovits J. Geopolymer chemistry and properties[C]//Proceedings of the 1st European Conference on Soft Mineralurgy. Compiegne, France, 1998: 25-48.
[3] Fernández-Jiménez A, Palomo J G, Puertas F. Alkali-activated slag mortars: Mechanical strength behaviour[J]. Cement and Concrete Research, 1999, 29(8):1313-1321. DOI:10.1016/s0008-8846(99)00154-4.
[4] Shi C, Xie P. Interface between cement paste and quartz sand in alkali-activated slag mortars[J]. Cement and Concrete Research, 1998, 28(6):887-896. DOI:10.1016/S0008-8846(98)00050-7.
[5] Brough A R, Atkinson A. Automated identification of the aggregate-paste interfacial transition zone in mortars of silica sand with Portland or alkali-activated slag cement paste[J]. Cement and Concrete Research, 2000, 30(6):849-854. DOI:10.1016/S0008-8846(00)00254-4.
[6] Komljenovic M, Bašcarevic Z, Marjanovic N, et al. External sulfate attack on alkali-activated slag[J]. Construction and Building Materials, 2013, 49:31-39. DOI:10.1016/j.conbuildmat.2013.08.013.
[7] Lee N K, Lee H K. Influence of the slag content on the chloride and sulfuric acid resistances of alkali-activated fly ash/slag paste[J].Cement and Concrete Composites, 2016, 72:168-179. DOI:10.1016/j.cemconcomp.2016.06.004.
[8] Roy D M, Jiang W, Silsbee M R. Chloride diffusion in ordinary, blended, and alkali-activated cement pastes and its relation to other properties[J]. Cement and Concrete Research, 2000, 30(12):1879-1884. DOI:10.1016/S0008-8846(00)00406-3.
[9] Provis J L, Deventer J S J V. Alkali activated materials[M]. The Netherlands: Springer, 2014.
[10] Hannant D J. Fibre cements and fibre concretes[M]. Mineralogical Society, 1978.
[11] Rashad A M. A comprehensive overview about the influence of different additives on the properties of alkali-activated slag-A guide for civil engineer[J]. Construction and Building Materials, 2013, 47:29-55. DOI:10.1016/j.conbuildmat.2013.04.011.
[12] Rashad A M. A comprehensive overview about the influence of different admixtures and additives on the properties of alkali-activated fly ash[J].Materials and Design, 2014, 53:1005-1025. DOI:10.1016/j.matdes.2013.07.074.
[13] Borges P H R, Banthia N, Alcamand H A, et al. Performance of blended metakaolin/blastfurnace slag alkali-activated mortars[J]. Cement and Concrete Composites, 2016, 71:42-52. DOI:10.1016/j.cemconcomp.2016.04.008.
[14] Li V C, Leung C K Y. Steady-state and multiple cracking of short random fiber composites[J]. Journal of Engineering Mechanics, 1992, 118(11): 2246-2264.
[15] Maalej M, Li V C. Introduction of strain hardening engineered cementitious composites in design of reinforced concrete flexural members for improved durability[J]. ACI Structural Journal, 1995, 92(2):167-176. DOI: 10.14359/1150.
[16] Said S H, Razak H A, Othman I. Flexural behavior of engineered cementitious composite(ECC)slabs with polyvinyl alcohol fibers[J]. Construction and Building Materials, 2015, 75:176-188. DOI: 10.1016/j.conbuildmat.2014.10.036.
[17] Lee B Y, Cho C G, Lim H J, et al. Strain hardening fiber-reinforced alkali-activated mortar—A feasibility study[J]. Construction and Building Materials, 2012, 37:15-20. DOI: 10.1016/j.conbuildmat.2012.06.007.
[18] Natali A, Manzi S, Bignozzi M C. Novel fiber-reinforced composite materials based on sustainable geopolymer matrix[J]. Procedia Engineering, 2011, 21:1124-1131. DOI: 10.1016/j.proeng.2011.11.2120.
[19] Zhang Y, Wei S, Li Z, et al.Impact properties of geopolymer based extrudates incorporated with fly ash and PVA short fiber[J]. Construction and Building Materials, 2008, 22(3):370-383.
[20] Zhang Y, Wei S, Li Z, et al. Geopolymer extruded composites with incorporated fly ash and polyvinyl alcohol short fiber[J]. ACI Materials Journal, 2009, 106(1):3-10. DOI:10.1016/j.conbuildmat.2006.08.006.
[21] Alam S Y, Saliba J, Loukili A. Fracture examination in concrete through combined digital image correlation and acoustic emission techniques[J]. Construction and Building Materials, 2014, 69:232-242. DOI:10.1016/j.conbuildmat.2014.07.044.
[22] Kim B, Weiss W J. Using acoustic emission to quantify damage in restrained fiber-reinforced cement mortars[J].Cement and Concrete Research, 2003, 33(2):207-214. DOI: 10.1016/S0008-8846(02)00978-X.
[23] Wu K, Chen B, Yao W. Study on the AE characteristics of fracture process of mortar, concrete and steel-fiber-reinforced concrete beams[J].Cement and Concrete Research, 2000, 30(9):1495-1500. DOI:10.1016/S0008-8846(00)00358-6.
[24] Soulioti D, Barkoula N M, Paipetis A, et al.Acoustic emission behavior of steel fibre reinforced concrete under bending[J]. Construction and Building Materials, 2009, 23(12):3532-3536. DOI:10.1016/j.conbuildmat.2009.06.042.
[25] Aggelis D G, Soulioti D V, Sapouridis N, et al.Acoustic emission characterization of the fracture process in fibre reinforced concrete[J]. Construction and Building Materials, 2011, 25(11):4126-4131. DOI:10.1016/j.conbuildmat.2011.04.049.
[26] Huang M, Jiang L T, Liaw P, et al. Using acoustic emission in fatigue and fracture materials research[J]. JOM, 1998, 50(11):1-14.
[27] Alam S Y, Loukili A, Grondin F, et al.Use of the digital image correlation and acoustic emission technique to study the effect of structural size on cracking of reinforced concrete[J]. Engineering Fracture Mechanics, 2015, 143:17-31. DOI:10.1016/j.engfracmech.2015.06.038.
[28] Muralidhara S, Prasad B K R, Eskandari H, et al. Fracture process zone size and true fracture energy of concrete using acoustic emission[J]. Construction and Building Materials, 2010, 24(4):479-486. DOI:10.1016/j.conbuildmat.2009.10.014.
[29] Wang C, Zhang Y, Ma A. Investigation into thefatigue damage process of rubberized concrete and plain concrete by AE analysis[J]. Journal of Materials in Civil Engineering, 2011, 23(7):953-960. DOI:10.1061/(ASCE)MT.1943-5533.0000257.
[30] Pan Z, Wu C, Liu J, et al.Study on mechanical properties of cost-effective polyvinyl alcohol engineered cementitious composites(PVA-ECC)[J]. Construction and Building Materials, 2015, 78:397-404. DOI:10.1016/j.conbuildmat.2014.12.071.
[31] Aydın S, Baradan B. The effect of fiber properties on high performance alkali-activated slag/silica fume mortars[J]. Composites Part B: Engineering, 2013, 45(1):63-69. DOI:10.1016/j.compositesb.2012.09.080.
[32] Niu H, Wu W, Xing Y, et al.Effects of water/cement ratio on properties and microstructure of PVA fiber-reinforced cementitious composites[J]. Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica, 2015, 32(4):1067-1074. DOI:10.13801/j.cnki.fhclxb.20141031.002. (in Chinese)
[33] Aggelis D G. Classification of cracking mode in concrete by acoustic emission parameters[J]. Mechanics Research Communications, 2011, 38(3):153-157. DOI:10.1016/j.mechrescom.2011.03.007.

Memo

Memo:

Biographies: Dong Chenghao(1994—), male, graduate; Zhang Yamei(corresponding author), female, doctor, professor, ymzhang@seu.edu.cn.
Foundation items: The National Basic Research Program of China(973 Program)(No.2015CB655100), the National Natural Science Foundation of China(No.51378115).
Citation: Dong Chenghao, Li Tao, Zhang Yamei, et al.Damage process and performance of PVA fiber-reinforced alkali-activated slag mortar plate under bending[J].Journal of Southeast University(English Edition), 2018, 34(2):229-236.DOI:10.3969/j.issn.1003-7985.2018.02.013.

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