Influence of Fly Ash Content and Early Curing Temperature on Tensile Performance of EGC

被引：0
|
作者：
Wan X. [1 ,2 ]
Liu J. [1 ]
Zhu Y. [1 ]
Yu Q. [1 ,3 ]
Zeng Y. [1 ]
机构：
[1] School of Civil Engineering, Qingdao University of Technology, Qingdao
[2] Cooperative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone, Qingdao University of Technology, Qingdao
[3] Qingdao Qingjian New Material Group Co., Ltd., Qingdao
来源：
Jianzhu Cailiao Xuebao/Journal of Building Materials | 2022年 / 25卷 / 04期
关键词：
Geopolymer; Interface property; Single fiber pull‑out test; Tensile performance; Toughness;
D O I：
10.3969/j.issn.1007-9629.2022.04.011
中图分类号：
学科分类号：
摘要：
The effects of fly ash content and early curing temperature on the tensile properties and microstructure of engineering geopolymer composites (EGC) were studied. The mechanical properties of fiber‑matrix interface of EGC were analyzed from the perspective micromechanics. The test results show that the decrease of fly ash content is not conductive to the improvement of the tensile ductility of EGC, and the moderate increase of early curing temperature is conducive to the improvement of tensile properties of EGC. When the fly ash content is 80%, and the early curing temperature is 60 ℃ or 80 ℃, the tensile strain of EGC can reach more than 3.5%. The longer slip hardening stage during fiber pullout process is helpful to improve the tensile performance of EGC. © 2022, Editorial Department of Journal of Building Materials. All right reserved.
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页码：401 / 407
页数：6
相关论文
共 24 条
  • [11] NOUSHINI A, BABAEE M, CASTEL A., Suitability of heat‑cured low‑calcium fly ash‑based geopolymer concrete for precast applications [J], Magazine of Concrete Research, 68, 4, (2016)
  • [12] FARHAN N A, SHEIKH M N, HADI M N S., Investigation of engineering properties of normal and high strength fly ash based geopolymer and alkali‑activated slag concrete compared to ordinary Portland cement concrete, Construction and Building Materials, 196, pp. 26-42, (2019)
  • [13] PAN Z, SANJAYAN J G, RANGAN B V., Fracture properties of geopolymer paste and concrete, Magazine of Concrete Research, 63, 10, (2011)
  • [14] SARKER P K, HAQUE R, RAMGOLAM K V., Fracture behaviour of heat cured fly ash based geopolymer concrete, Materials and Design, 44, (2013)
  • [15] SHAIKH F U A., Deflection hardening behaviour of short fibre reinforced fly ash based geopolymer composites, Materials and Design, 50, (2013)
  • [16] NEMATOLLAHI B, SANJAYAN J, SHAIKH F U A., Tensile strain hardening behavior of PVA fiber‑reinforced engineered geopolymer composite, Journal of Materials in Civil Engineering, 27, 10, (2015)
  • [17] LEE B Y, CHO C G, LIM H J, Et al., Strain hardening fiber reinforced alkali‑activated mortar-A feasibility study, Construction and Building Materials, 37, pp. 15-20, (2012)
  • [18] OHNO M, LI V C., A feasibility study of strain hardening fiber reinforced fly ash‑based geopolymer composites, Construction and Building Materials, 57, (2014)
  • [19] NEMATOLLAHI B, SANJAYAN J, QIU J S, Et al., High ductile behavior of a polyethylene fiber‑reinforced one‑part geopolymer composite: A micromechanics‑based investigation, Archives of Civil and Mechanical Engineering, 17, 3, (2017)
  • [20] NEMATOLLAHI B, QIU J, YANG E H, Et al., Microscale investigation of fiber‑matrix interface properties of strain‑hardening geopolymer composite, Ceramics International, 43, 17, pp. 15616-15625, (2017)
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