玄武岩织物增强碱激发矿渣粉煤灰水泥砂浆的耐久性研究

doi:10.11896/cldb.19120068

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Abstract Reinforcement with the basalt textile can improve both the mechanical performance and volume stability of the alkali-activated cementitious materials. But the current understanding of its durability and long-term performance is still limited. In order to resolve this issue, accelerated aging experiment, flexural test and microscale characterization with scanning electron microscopy (SEM) were conducted for the basalt textile reinforced alkali-activated slag-fly ash cement mortar and Portland cement mortar specimens with and without epoxy coating. The experimental results indicate that compared with that of Portland cement mortar specimens, the flexural strength of the textile reinforced alkali-activated cement mortar specimens decreased more obviously with accelerated aging. After exposure for 24 d, the strength retention rate of alkali-activated cement mortar specimens and Portland cement mortar specimens are 68.94% and 81.69% respectively. The epoxy coating can improve the flexural strength and mitigate the alkaline deterioration on the flexural strength in the early stage of aging. But the effect of the epoxy coating gradually weakens with the increase of the age, and roughly fails at 18 d. Specifically, the reduction degree on the ultimate flexural strain is more obvious compared to that of the flexural strength. The basalt fibers embedded in the Portland cement mortars present local pit corrosion, while the wholescale pit corrosion can be found on the surface of those embedded in the alkali-activated cement mortars. These results support that the epoxy coating can effectively protect textiles from the alkali solution in matrix, but it degrades gradually during the accelerated aging process. Hence, the development of new surface treatment methods is needed to achieve more durable and effective surface protection for the basalt fiber in alkaline solution.

Key words： basalt textile reinforcement alkali-activated flexural property durability performance surface coating

Published: Online: 2021-09-07

CLC number:

TB332

Fund:National Natural Science Foundation of China (51778220,U1806225,51638008), High-level Talent Gathering Project in Hunan Province (2018RS3057),Science and Technology Program of Changsha City (kq1907115).

About author: Zhuo Peng, a master student of the School of Civil Engineering, Hunan University, and is conducting research under the guidance of Prof. Caijun Shi and Prof. Deju Zhu. Her research has focused on the fabric reinforced cementitious matrix composite.
Deju Zhu, professor and doctoral supervisor of Hunan University. His research interests include high perfor-mance textile reinforced concrete (TRC) and fiber reinforced polymers (FRP), seawater sea-sand concrete (SWSSC) and FRP reinforced SWSSC structure in marine environment, multi-scale behavior of biological and bio-inspired materials and biomimicry design & manufacture. He has hosted 10 national and provincial scientific research projects in recent 5 years. He has published 84 SCI/EI papers and 2 book chapters. He won the best paper award of Journal of Advanced Concrete Technology. He is an editorial board member of Journal of Sustainable Cement-Based Materials, committee member of civil engineering composites branch of Chinese society for composite materials, reviewer for more than 20 international authoritative journals including Cement and Concrete Composites.

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	PENG Zhuo
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Cite this article:

PENG Zhuo,ZHU Deju,SHI Caijun, et al. Durability Analysis of Basalt Textile Reinforced Alkali-activated Slag-fly Ash Cement Mortars[J]. Materials Reports, 2021, 35(16): 16058-16064.

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http://www.mater-rep.com/EN/10.11896/cldb.19120068 OR http://www.mater-rep.com/EN/Y2021/V35/I16/16058

1 Shi C, Roy D, Krivenko P. Alkali-activated cements and concretes, CRC Press, USA, 2006.
2 Shi C,Stegemann J A.Cement and Concrete Research,2000,30(6),803.
3 Shi C. Cement and Concrete Research,1996, 26(12),1789.
4 Shi C. Advances in Cement Research, 2003, 15(2), 77.
5 Mobasher B. Mechanics of fiber and textile reinforced cement composites, CRC Press, USA, 2011.
6 Peled A, Mobasher B. Journal of Materials in Civil Engineering, 2007, 19(4), 340.
7 Xu S L, Li H. Journal of Building Materials,2006,9(4),481(in Chinese).
徐世烺, 李赫. 建筑材料学报, 2006, 9(4), 481.
8 Banholzer B, Brockmann T, Brameshuber W. Materials and Structures, 2006, 39(8), 749.
9 Xun Y, Zhang Q, Li Y T. China Civil Engineering Journal, 2008, 41(10), 39(in Chinese).
荀勇, 张勤, 李玉寿. 土木工程学报, 2008, 41(10), 39.
10 Brameshuber W, Brockmann T. In: Calcium Aluminate Cements 2001. London, 2001, pp. 659.
11 Orlowsky J, Raupach M, Cuypers H, et al. Materials and Structures, 2005, 38(2), 155.
12 Li T, Zhang Y, Dai J. Construction and Building Materials,2017,152,651.
13 Shaikh F U A, Patel A. Fibers, 2018, 6(1), 2.
14 Chi H L, Louda P, Periyasamy A P, et al. Fibers, 2018, 6, 87.
15 Menna C, Asprone D, Ferone C, et al. Composites Part B: Engineering, 2013, 45(1), 1667.
16 Cao L. Experimental study on RC beams shear strengthened with carbon fiber textile reinforced geopolymer mortar. Master's Thesis, South China University of Technology, China, 2016 (in Chinese).
曹亮. 纤维编织网增强地聚物砂浆抗剪加固钢筋混凝土梁试验研究. 硕士学位论文, 华南理工大学, 2016.
17 Zhao R, Shi C J, Wang X G, et al. Bulletin of the Chinese Ceramic Society, 2013, 32(9), 1794(in Chinese).
赵瑞, 史才军, 王小刚, 等. 硅酸盐通报, 2013, 32(9), 1794.
18 Kim D J, Naaman A E, El-tawil S. Cement and Concrete Composites, 2008, 30(10),917.
19 Pan Y C. Research on performance in fiber textile reinforced concrete sheet. Master's Thesis, Southeast University, China, 2006 (in Chinese).
潘永灿. 纤维织物增强混凝土薄板受力性能研究. 硕士学位论文, 东南大学, 2006.
20 Yang J M, Qian C X, Xun Y, et al. Journal of Building Materials, 2009, 12(5), 590(in Chinese).
杨建明, 钱春香, 荀勇, 等. 建筑材料学报, 2009, 12(5), 590.
21 Cao J H. Study on durability of glass fiber reinforced ordinary Portland cement. Ph.D. Thesis, Chongqing University, China, 2004 (in Chinese).
曹巨辉. 玻璃纤维增强普通硅酸盐水泥耐久性研究. 博士学位论文, 重庆大学, 2004.
22 Du Y B, Xun Y, Liu X Y. Concrete, 2008(9), 53(in Chinese).
杜玉兵, 荀勇, 刘小艳. 混凝土, 2008(9), 53.
23 Cheng C, He J, Zhang J, et al. Construction and Building Materials, 2019, 217, 128.
24 Kong K, Mesticou Z, Michel M, et al. Composite Structures, 2017, 179, 107.
25 Litherland K L, Oakly D R, Proctor B A. Cement and Concrete Research, 1981, 11(3), 455.
26 Rajabipour F, Maraghechi H, Fischer G. Journal of Materials in Civil Engineering, 2010, 22(12), 1201.
27 Rybin V A, Utkin A V, Baklanova N I. Cement and Concrete Research, 2013, 53, 1.