Mechanical properties of alkali-activated slag lightweight aggregate concrete

被引：21
|
作者：
Chen, Pang [1 ]
Shi, Zhaoyue [1 ]
Cao, Shaojun [1 ]
Liu, Ping [1 ]
Rong, Xian [1 ]
Wang, Lida [1 ]
机构：
[1] Hebei Univ Technol, Sch Civil & Transportat Engn, Tianjin 300401, Peoples R China
来源：
JOURNAL OF CLEANER PRODUCTION | 2022年 / 359卷
基金：
中国国家自然科学基金;
关键词：
Alkali-activated slag concrete; Lightweight aggregate; Compressive strength; Splitting strength; Flexural strength; Microstructure; DRYING SHRINKAGE; STRENGTH; PERFORMANCE; MICROSTRUCTURE; FIBERS; CEMENT; BEHAVIOR; RATIO; ASH;
D O I：
10.1016/j.jclepro.2022.132136
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The mechanical properties of alkali-activated slag lightweight aggregate concrete (AAS-LWAC) were deep investigated. A total of 108 AAS-LWAC samples were prepared for compressive strength test, splitting tensile strength test, and flexural strength test. The microstructures of AAS-LWAC were characterised in depth using scanning electron microscopy (SEM). Compared with clay ceramsite and shale ceramsite as the lightweight aggregate (LWA), AAS-LWAC with fly ash ceramsite as the LWA exhibited the highest compressive strength. Besides, the compressive, splitting, and flexural strengths of AAS-LWAC decreased with increasing LWA content. Moreover, compared with polypropylene fibres and basalt fibres, steel fibres can significantly increase the compressive, splitting, and flexural strengths of AAS-LWAC, with an optimal volume content of 0.6% steel fibre. Furthermore, a modified formula for the variation in compressive strength of AAS-LWAC over time was proposed, considering the influence of LWA.
引用
收藏
页数：11
相关论文
共 50 条
  • [1] Mechanical Properties of Alkali-activated Slag Concrete
    Wan X.
    Zhang Y.
    Zhao T.
    Zhang S.
    Cheng Y.
    [J]. 2018, Cailiao Daobaoshe/ Materials Review (32): : 2091 - 2095
  • [2] Tensile creep behavior of Alkali-activated slag concrete incorporating lightweight aggregate
    Zheng, Xiaoyan
    Lu, Hongye
    You, Shengjie
    Cheng, Kejia
    Easa, Said M.
    Chen, Zongyan
    Ma, Chun
    Fu, Dabao
    Ji, Tao
    [J]. CONSTRUCTION AND BUILDING MATERIALS, 2022, 357
  • [3] Effect of Water Content on the Properties of Lightweight Alkali-Activated Slag Concrete
    Yang, Keun-Hyeok
    Mun, Ju-Hyun
    Sim, Jae-Il
    Song, Jin-Kyu
    [J]. JOURNAL OF MATERIALS IN CIVIL ENGINEERING, 2011, 23 (06) : 886 - 894
  • [4] Cracking resistance and sustainability assessment of alkali-activated slag concrete incorporating lightweight aggregate
    Zheng, Xiaoyan
    Liu, Huanghai
    You, Shengjie
    Easa, Said
    Cheng, Kejia
    Chen, Zongyan
    Ji, Tao
    [J]. CEMENT & CONCRETE COMPOSITES, 2022, 131
  • [5] Mechanical and microstructural characterization of an alkali-activated slag/limestone fine aggregate concrete
    Sakulich, Aaron R.
    Anderson, Edward
    Schauer, Caroline
    Barsoum, Michel W.
    [J]. CONSTRUCTION AND BUILDING MATERIALS, 2009, 23 (08) : 2951 - 2957
  • [6] Resistance of alkali-activated slag concrete to alkali-aggregate reaction
    Bakharev, T
    Sanjayan, JG
    Cheng, YB
    [J]. CEMENT AND CONCRETE RESEARCH, 2001, 31 (02) : 331 - 334
  • [7] Mechanical properties and microstructure of slag and fly ash alkali-activated lightweight concrete containing miscanthus particles
    Ntimugura, Fabrice
    Vinai, Raffaele
    Dalzell, Martin
    Harper, Anna
    Walker, Pete
    [J]. MATERIALS LETTERS, 2022, 312
  • [8] Study on fracture properties of alkali-activated slag seawater coral aggregate concrete
    Xu, Weiying
    Yang, Shutong
    Xu, Chengji
    Sun, He
    [J]. CONSTRUCTION AND BUILDING MATERIALS, 2019, 223 : 91 - 105
  • [9] Properties of concrete made with alkali-activated fly ash lightweight aggregate (AFLA)
    Jo, Byung-wan
    Park, Seung-kook
    Park, Jong-bin
    [J]. CEMENT & CONCRETE COMPOSITES, 2007, 29 (02): : 128 - 135
  • [10] PROPERTIES AND DURABILITY OF ALKALI-ACTIVATED SLAG CONCRETE
    DOUGLAS, E
    BILODEAU, A
    MALHOTRA, VM
    [J]. ACI MATERIALS JOURNAL, 1992, 89 (05) : 509 - 516
12345