Abrasion Resistance of Modified SAP-Pavement-Concrete by Nano-SiO2 in Seasonal Frozen Area

被引：0
|
作者：
Shen A. [1 ]
Chen R. [1 ]
Guo Y. [1 ]
Fan J. [1 ]
Dai X. [1 ]
Chou T. [1 ]
机构：
[1] Key Laboratory for Special Area Highway Engineering, Ministry of Education, Chang’an University, Xi’an
来源：
Cailiao Daobao/Materials Reports | 2024年 / 38卷 / 07期
关键词：
abrasion resistance; nano-SiO[!sub]2[!/sub; pavement concrete; seasonal frozen area; super absorbent polymer;
D O I：
10.11896/cldb.23010093
中图分类号：
学科分类号：
摘要：
In order to solve the problem of the decrease in abrasion resistance of SAP-pavement-concrete in seasonal frozen area,the effect of nano-SiO2(NS)on the abrasion of SAP-pavement-concrete in seasonal frozen area was explored by abrasion resistance test. The pore structure and micromorphology variations of modified SAP-pavement-concrete by NS before and after freeze-thaw were analyzed by mercury intrusion pressure (MIP)and scanning electron microscopy (SEM). The enhancement mechanism of abrasion resistance was revealed from microscopic level. The relationship between pore size distribution and pore parameters with abrasion resistance were analyzed. The results show that after 150 freeze-thawing cycles,the abrasion amount of concrete modified by 3% NS decreases by 30. 92% compared with JZ under 200 N load. Concurrently,there was an increase in the proportion of pores at the 20—50 nm,while the proportion of pores at 50—200 nm decreased. Additionally,total pore volume and porosity diminished,accompanied by a significant reduction in the number and size of interface cracks. Internal structure density was increased significantly,and the wear resistance was enhanced significantly. © 2024 Cailiao Daobaoshe/ Materials Review. All rights reserved.
引用
收藏
相关论文
共 23 条
  • [1] Shen D J, Wang X D, Jiang G Q., Construction and Building Materials, 106, 106, (2016)
  • [2] Fan C X, Tian H., The 3rd International Conference on Civil Engineering and Transportation, (2013)
  • [3] Hu X P, Peng G, Zhao N., Construction and Building Materials, 210, (2019)
  • [4] Lyu L H, Liu J Z., Journalof Northeast Forestry University, 37, 10, (2009)
  • [5] Pang L F, Ruan S Y, Cai Y T., Key Engineering Materials, 477, (2011)
  • [6] Tran H B, Phan V T A., Nanotechnology Reviews, 68, 2, (2022)
  • [7] Yu L, Zhou C Y, Liu Z, Et al., Construction and Building Materials, 208, (2019)
  • [8] Rajput B L, Pimplikar S S., The 3rd International Conference on Recent Advancesin Materials and Manufacturing, (2021)
  • [9] Arasteh-Khoshbin O, Seyedpour S M, Ricken T., Scientific Reports, 12, 1, (2022)
  • [10] Cunha T A, Agostinho L B, Silva E F, Et al., The 3rd International Conference on Application of Superabsorbent Polymers & Other New Admixtures Towards Smart Concrete, (2019)
123