Granular effect of fly ash repairs damage of recycled coarse aggregate

被引：1
|
作者：
Li J.-S. [1 ,2 ]
Xiao H.-N. [1 ]
Gong J.-Q. [1 ]
机构：
[1] College of Materials Science and Engineering, Hunan University
[2] Changsha University of Science and Technology
来源：
J. Shanghai Jiaotong Univ. Sci. | 2008年 / 2卷 / 177-180期
关键词：
Characteristics of interfacial transition zone; Fly ash; Pores structure; Repairing effect;
D O I：
10.1007/s12204-008-0177-6
中图分类号：
学科分类号：
摘要：
Repairing effect of fly ash (FA) on damage of recycled coarse aggregate was evaluated by characteristics of pores and cracks in the vicinity of interfacial transition zone (ITZ). The interfacial structure between the virgin aggregate and the attached old mortar was investigated and compared with ITZ of recycled aggregate concrete in the presence of FA or ultra-fine FA (UFA) by means of scanning electron microscope (SEM). Diameter and plumpness frequency distribution of pores as well as width of the old ITZ, length of contacting points and cracks density were analyzed. The SEM results reveal that the diameter of pores is decreases significantly but pores plumpness increases. A decreased ITZ width and cracks density as well as an increased bonding zone length can also been observed, which indicates that FA or UFA repairs damage of recycled coarse aggregate due to its granular effect.
引用
收藏
页码：177 / 180
页数：3
相关论文
共 50 条
  • [1] Granular Effect of Fly Ash Repairs Damage of Recycled Coarse Aggregate
    李九苏
    肖汉宁
    龚建清
    [J]. Journal of Shanghai Jiaotong University(Science), 2008, (02) : 177 - 180
  • [2] Effect of Fly Ash on Compressive Strength of Concrete Containing Recycled Coarse Aggregate
    Rohman, Rosyid Kholilur
    Aji, Seno
    [J]. INTERNATIONAL CONFERENCE ON SCIENCE AND APPLIED SCIENCE (ICSAS) 2018, 2018, 2014
  • [3] Effect of recycled coarse aggregate on damage of recycled concrete
    Gonzalez-Fonteboa, Belen
    Martinez-Abella, Fernando
    Eiras-Lopez, Javier
    Seara-Paz, Sindy
    [J]. MATERIALS AND STRUCTURES, 2011, 44 (10) : 1759 - 1771
  • [4] Effect of recycled coarse aggregate on damage of recycled concrete
    Belén González-Fonteboa
    Fernando Martínez-Abella
    Javier Eiras-López
    Sindy Seara-Paz
    [J]. Materials and Structures, 2011, 44
  • [5] Influence of Accelerated Carbonation on the Performance of Recycled Concrete Containing Fly Ash, Recycled Coarse Aggregate, and Fine Aggregate
    Yao, Ziqi
    Luo, Ling
    Qin, Yongjun
    Bi, Yu
    Liu, Fengchao
    Yang, Yiheng
    [J]. Materials, 2024, 17 (21)
  • [6] Effect of Fly Ash on the Strength of Porous Concrete using Recycled Coarse Aggregate to replace Low-Quality Natural Coarse Aggregate
    Arifi, Eva
    Cahya, Evi Nur
    Remayanti, Christin N.
    [J]. GREEN CONSTRUCTION AND ENGINEERING EDUCATION FOR SUSTAINABLE FUTURE, 2017, 1887
  • [7] Properties of environmental friendly concrete containing recycled coarse aggregate and fly ash
    Shi Xiao-shuang
    Wand Qing-yuan
    Li Lang
    Long Tao
    [J]. FRONTIERS OF GREEN BUILDING, MATERIALS AND CIVIL ENGINEERING III, PTS 1-3, 2013, 368-370 : 957 - 962
  • [8] Effect of ground fly ash and ground bagasse ash on the durability of recycled aggregate concrete
    Somna, Rattapon
    Jaturapitakkul, Chai
    Amde, Amde M.
    [J]. CEMENT & CONCRETE COMPOSITES, 2012, 34 (07): : 848 - 854
  • [9] Effect of Recycled Coarse Aggregate and Bagasse Ash on Two-Stage Concrete
    Javed, Muhammad Faisal
    Durrani, Afaq Ahmad
    Kashif Ur Rehman, Sardar
    Aslam, Fahid
    Alabduljabbar, Hisham
    Mosavi, Amir
    [J]. CRYSTALS, 2021, 11 (05)
  • [10] Partially fly ash incorporated recycled coarse aggregate based concrete: Microstructure perspectives and critical analysis
    Sunayana, Sushree
    Barai, Sudhirkumar, V
    [J]. CONSTRUCTION AND BUILDING MATERIALS, 2021, 278
12345