Properties and Mechanism of Modified Steel Slag-Asphalt Mixture

被引：0
|
作者：
Gao Y. [1 ]
Chen M. [2 ]
Wang C. [1 ]
机构：
[1] School of Civil Engineering, Hebei University of Engineering, Hebei, Handan
[2] Municipal Planning Division, Beijing Shougang International Engineering Technology Co.,Ltd., Beijing
来源：
Cailiao Daobao/Materials Reports | 2024年 / 38卷 / 02期
关键词：
cracking resistance mechanism; modification mechanism; modified steel slag; modified steel slag-asphalt mixture; property;
D O I：
10.11896/cldb.22100041
中图分类号：
学科分类号：
摘要：
The steel slag was soaked and modified using sodium methyl silicate solution,silica colloidal solution,and polyacrylate emulsion. The physical and mechanical properties of modified steel slag,the properties of modified steel slag-asphalt mixture,the modification mechanism of steel slag and the crack resistance of modified steel slag-asphalt mixture were investigated by property testing,scanning electron microscope (SEM),acoustic emission and other test methods. The physical properties of 4. 75—19 mm steel slag were improved after modification by 1%—4% concentration of solvent. The volume stability of modified steel slag-asphalt mixes prepared from modified steel slag with 3% solvent concentration increased by 27. 92% to 39. 09% compared to unmodified steel slag-asphalt mixes (RSAM). Modified steel slag surface wrapped with different states of insoluble modified protective layer,the surface of the modified steel slag (SMS)showed a dense layered structure and kept the surface rough,and the modification effect was the best. The crack width of silica modified steel slag-asphalt mixture (SMSAM)was reduced and the main crack appeared later,SMS played a role in slowing down the fracture damage of SMSAM and improved the cracking resistance of the mixture. © 2024 Cailiao Daobaoshe/ Materials Review. All rights reserved.
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共 31 条
  • [1] Yin X, Zhang C M, Yang J, Et al., Materials Reports, 32, 2, (2018)
  • [2] Faleschini F, Brunelli K, Angelo M, Et al., Journal of Sustainable Metallurgy, 2, 1, (2016)
  • [3] Pasetto M, Baliello A, Giacomello G, Et al., Journal of Cleaner Production, 166, 10, (2017)
  • [4] Yang L Y, Wen T T, Wang L P, Et al., Journal of Environmental Management, 231, (2019)
  • [5] Wang Q, Yan P Y, Yang J W, Et al., Construction and Building Materials, 47, (2013)
  • [6] Zhuang S Y, Wang Q., Cement and Concrete Research, 140, (2021)
  • [7] Netinger I, Bjegovi D, Vrhovac G., Materials and Structures, 44, 9, (2011)
  • [8] Lun Y, Liu S, Luo X, Et al., Materials Research Innovations, 19, (2015)
  • [9] Hall C, Large D J, Adderley B, Et al., Minerals Engineering, 65, 15, (2014)
  • [10] Tam V W Y, Tam C M, Le K N., Resources,Conservation & Recycling, 50, 1, (2006)
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