SiO<sub>2</sub>气凝胶对超细水泥基材料性能影响的试验研究

doi:10.11896/cldb.22080137

Abstract
Figure/Table
References
Related Citation (15)

Download:

Full Text ( PDF ) (13830KB)
Export: BibTeX | EndNote (RIS)

Abstract Due to the lower mechanical strength, the application potential of silica aerogel cement-based materials with excellent thermal insulation, fireproofing and lightweight properties was greatly under restriction. The characteristics of high activity and fast hydration speed of superfine cement could promote the growth of compressive and flexural strength. Therefore, the superfine cement was chosen as the cementitious material in this experiment, to prepare aerogel cement-based materials with the property of both thermal insulation and strength. Based on replacing the equal volume of sand by SiO₂ aerogel particles, the fluidity, dry density, water absorption, thermal conductivity, mechanical properties, and microstructure of cementitious materials were investigated under the different dosages of silica aerogel (the volume of sand and aerogel was 60%). The results showed that with the increase of aerogel content from 0% to 60%, the material fluidity decreased by 7.3%—22.3%, and the dry density gradually decreased while the water absorption increased. The thermal conductivity in the saturated and dry state decreased separately from 2.58 W/(m·K) to 0.49 W/(m·K) and from 2.55 W/(m·K) to 0.24 W/(m·K), indicating a significant improvement on the perfor-mance of thermal insulation. The compressive strength and flexural tensile strength ranged from 66.3 MPa to 14.1 MPa, and from 12.9 MPa to 3.1 MPa, which was decreased by 76.0% and 78.7% respectively compared with the sample unincorporated aerogel. Based on the analysis of SEM and EDS, there was a gap between the aerogel particles and surrounding cement matrix, and the Ca/Si atomic number ratio between the gape ranged from 0.64 to 1.13. The product of alkali-silicate reaction was C-S-H (calcium silicate hydrate) between silica aerogel and ultra-fine cement pore solution, which was helpful to improve the strength of interfacial transition zone.

Key words： silica aerogel superfine cement mechanical property thermal conductivity alkali silicate reaction microscopic structure

Published: 10 August 2023 Online: 2023-08-07

CLC number:

TU528

Fund:Cooperative Project between Universities in Chongqing and Affiliated Institutes of CAS(HZ2021009), the China Postdoctoral Science Foundation(2020M683710XB), the Natural Science Foundation of Xizang (XZ202101ZR0036G), the Ehan Expressway Engineering Research Project (LH-HT-45), and Research and Innovation Project of Chongqing Jiaotong University(2020S0015).

	Service
	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	HAN Fenglei
	LIU Yan
	LIU Tao
	ZHANG Xuefu
	LYU Yang
	ZHAXI Nima

Cite this article:

HAN Fenglei,LIU Yan,LIU Tao, et al. Experimental Study on the Influence of Silica Aerogel on the Properties of Superfine-cement Composites[J]. Materials Reports, 2023, 37(15): 22080137-7.

URL:

http://www.mater-rep.com/EN/10.11896/cldb.22080137 OR http://www.mater-rep.com/EN/Y2023/V37/I15/22080137

1 Beardi U. Nanotechnology in Eco-efficient Construction (Second Edition), 2019, 395.
2 Dai Q Y. Bulletin of the Chinese Ceramic Society, 2020, 39(9), 3014 (in Chinese).
戴勤友. 硅酸盐通报, 2020, 39(9), 3014.
3 Marques B, Almeida J, Tadeu A, et al. Journal of Building Enginee-ring, 2021, 39, 102297.
4 Wang H H. Paint and Coatings Industry, 2020, 50(8), 81 (in Chinese).
王焕焕. 涂料工业, 2020, 50(8), 81.
5 Zhang K, Lu Y M, Lu H S. Construction Economics, 2022, 43(3), 14 (in Chinese).
张凯, 陆玉梅, 陆海曙. 建筑经济, 2022, 43(3), 14.
6 Liu H L, Xuan Y J, An G Q, et al. Bulletin of the Chinese Ceramic Society, 2019, 38(4), 1068 (in Chinese).
刘洪丽, 宣玉杰, 安国庆, 等. 硅酸盐通报, 2019, 38(4), 1068.
7 Ng S, Jelle B P, Sandberg L I C, et al. Construction and Building Materials, 2015, 77, 307
8 Welsch T, Schnellenbach-Held M. In: Conference Record of the 2017 fib Symposium on Technology and Engineering Meet. Maastricht, 2017, pp. 117.
9 Hub A, Zimmermann G, Knippers J. Concrete and reinforced concrete construction, 2013, 108(9), 654.
10 Schnellenbach-Held M, Welsch T. High tech concrete: where technology and engineering meet, Springer International Publishing, Germany, 2018.
11 Ratke L. Concrete and Reinforced Concrete Construction, 2008, 103(4), 236.
12 Kim S, Seo J, Cha J, et al. Construction and Building Materials, 2013, 40, 501.
13 Gao T, Jelle B P, Gustavsen A, et al. Construction and Building Materials, 2014, 52, 130.
14 Feng J C, Li T, Zhu P H, et al. Concrete, 2018(1), 124 (in Chinese).
封金财, 李涛, 朱平华, 等. 混凝土, 2018(1), 124.
15 Ng S, Jelle B P, Sthli T. Cement and Concrete Composites, 2016, 72, 213.
16 Aygrmez Y. Innovative Infrastructure Solutions, 2022, 7(3), 1.
17 Wu F F, Shi K B, Dong S K, et al. Nuclear Science and Techniques, 2016, 32(4), 119 (in Chinese).
吴福飞, 侍克斌, 董双快, 等. 农业工程学报, 2016, 32(4), 119.
18 Stefanidon M, Ysardaka E C, Pavlidon E. Materials today: proceedings, 2017, 4(7), 6908.
19 Ali H, Hamid R, Davood M, et al. Construction and Building Materials, 2017, 152, 192.
20 Zhang S Y, Cong G W, Sun J Q, et al. Journal of Qingdao Agricultural University: Natural Science Edition, 2021, 38(3), 224 (in Chinese).
张思雨, 丛干文, 孙嘉卿, 等. 青岛农业大学学报:自然科学版, 2021, 38(3), 224.
21 Zhao M, Zhang M T, Peng J H. Non-metallic Mines, 2020, 43(4), 41 (in Chinese).
赵敏, 张明涛, 彭家惠. 非金属矿, 2020, 43(4), 41.
22 Guo D M, Tan J S, Xiao Z X, et al. Journal of Henan Polytechnic University (Natural Science Edition), 2017, 36(5), 1 (in Chinese).
郭东明, 谭霁爽, 肖正星, 等. 河南理工大学学报(自然科学版), 2017, 36(5), 1.
23 ZHANG Y Q. Microscopic experimental study and theoretical analysis of permeability characteristics of superfine cement. Master's Thesis, Shandong University of Science and Technology, China, 2010 (in Chinese).
张彦奇. 超细水泥渗透特性微观试验研究及理论分析. 硕士学位论文, 山东科技大学, 2010.
24 Zhou M R, Peng X X, Su B T, et al. Bulletin of The Chinese Ceramic Society, 2017, 36(5), 1673 (in Chinese).
周茗如, 彭新新, 苏波涛, 等. 硅酸盐通报, 2017, 36(5), 1673.
25 Al Zaidi I K, Demirel B, Atis C D, et al. Structural Concrete, 2020, 21, 1123.
26 Adhikary S K, Ashish D K, Rudionis Y. Energy and Buildings, 2021, 245, 111058.
27 Zhao J, Lu X Y. China Concrete, 2019, 125(11) 48 (in Chinese).
赵筠, 路新瀛. 混凝土世界, 2019, 125(11) 48.
28 Zhu P H, Sun Y Q, Feng J C, et al. Concrete, 2017(12), 132 (in Chinese).
朱平华, 孙远乾, 封金财, 等. 混凝土, 2017(12), 132.
29 Wu Y P, Wang J Y, Monteiro P J M, et al. Construction and Building Materials, 2015, 87, 100.
30 Demirboga R, Kan A. Construction and Building Materials, 2012, 35, 730.
31 Fickler S, Milow B, Ratke L, et al. Energy Encyclopedia, 2015, 78, 405.
32 Oluokun F A. ACI Materials Journal, 1991, 88(3), 302.
33 Babu D S, Babu K G, Wee T H. Cement and Concrete Research, 2005, 35(6), 1218.
34 Chen Y Z, Zhong H X, Yin W S, et al. Bulletin of The Chinese Ceramic Society, 2020(6), 1798 (in Chinese).
陈友治, 钟浩轩, 殷伟淞, 等. 硅酸盐通报, 2020(6), 1798.
35 He Y J, Zhao X G, Lu L N, et al. Journal of Wuhan University of Technology: Materials Science, 2011, 26(4), 770.
36 Zhu P H, Samuel B, Zhao S Y, et al. Cement and Concrete Composites, 2019, 104, 103414.
37 Becker P F B, Effting C, Schackow A. Cement and Concrete Composites, 2022, 125, 104283.
38 Hao L W, Wang Y, Yang F H, et al. American Journal of Civil Engineering, 2015, 3(5), 183.
39 Yu R, Spiesz P, Brouwers H. Construction and Building Materials, 2014, 65, 140.