Alkali-activated binders based on ground granulated blast furnace slag and phosphogypsum

被引：61
|
作者：
Gijbels, Katrijn [1 ]
Lacobescu, Remus Ion [2 ]
Pontikes, Yiannis [2 ]
Schreurs, Sonja [1 ]
Schroeyers, Wouter [1 ]
机构：
[1] Hasselt Univ, CMK, Nucl Technol Ctr, Agoralaan, Gebouw H, B-3590 Diepenbeek, Belgium
[2] Katholieke Univ Leuven, Dept Mat Engn, Kasteelpk Arenberg 44, B-4001 Leuven, Belgium
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2019年 / 215卷
关键词：
Super-sulphated cement; Alkali-activated binder; Ground granulated blast furnace slag; Phosphogypsum; Hydration; Building material; C-S-H; CALCIUM SILICATE HYDRATE; REACTION-KINETICS; SUPERSULFATED CEMENT; SPECTROSCOPY; MECHANISMS; PHASE; FTIR; GEL; IMMOBILIZATION;
D O I：
10.1016/j.conbuildmat.2019.04.194
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The effect of phosphogypsum (PG) in alkali-activated ground granulated blast furnace slag (GGBFS) on the reactivity, strength development and final matrix properties was investigated, as a function of alkali activator. The results were compared with alkali-activated reference samples from GGBFS. PG completely dissolves and takes part in solid reaction product formation. Upon PG incorporation, portlandite and ettringite are initially formed after dissolution. The hardened binder consists mainly of amorphous hydration products, intermixed with thenardite and minor amounts of secondary gypsum and merwinite. PG incorporation resulted in faster initial and delayed final setting time, while it enhanced the compressive strength and amorphous phase development when sodium hydroxide was used. PG gave rise to a decrease of Al/Si and Ca/Si ratios in the C-A-S-H gels and a higher polymerized network. (C) 2019 Elsevier Ltd. All rights reserved.
引用
收藏
页码：371 / 380
页数：10
相关论文
共 50 条
  • [1] Effects of phosphogypsum substitution on the performance of ground granulated blast furnace slag/fly ash-based alkali-activated binders
    Feng, Yuan
    Xue, Zixin
    Zhang, Baifa
    Xie, Jianhe
    Chen, Canguang
    Tan, Jiakun
    Zhao, Chenyang
    [J]. JOURNAL OF BUILDING ENGINEERING, 2023, 70
  • [2] Hydration of alkali-activated ground granulated blast furnace slag
    Song, S
    Sohn, D
    Jennings, HM
    Mason, TO
    [J]. JOURNAL OF MATERIALS SCIENCE, 2000, 35 (01) : 249 - 257
  • [3] Hydration of alkali-activated ground granulated blast furnace slag
    S. Song
    D. Sohn
    H. M. Jennings
    T. O. Mason
    [J]. Journal of Materials Science, 2000, 35 : 249 - 257
  • [4] Radon immobilization potential of alkali-activated materials containing ground granulated blast furnace slag and phosphogypsum
    Gijbels, Katrijn
    Lacobescu, Remus Ion
    Pontikes, Yiannis
    Vandevenne, Niels
    Schreurs, Sonja
    Schroeyers, Wouter
    [J]. CONSTRUCTION AND BUILDING MATERIALS, 2018, 184 : 68 - 75
  • [5] Properties of alkali-activated ground granulated blast furnace slag blended with ferronickel slag
    Cao, Ruilin
    Li, Baoliang
    You, Nanqiao
    Zhang, Yamei
    Zhang, Zuhua
    [J]. CONSTRUCTION AND BUILDING MATERIALS, 2018, 192 : 123 - 132
  • [6] A study of alkali-activated concrete mixes with ground granulated blast furnace slag
    Mavroulidou, M.
    Martynkova, R.
    [J]. GLOBAL NEST JOURNAL, 2018, 20 (02): : 208 - 215
  • [7] Stabilization of Indian peat using alkali-activated ground granulated blast furnace slag
    Suhail Ahmad Khanday
    Monowar Hussain
    Amit Kumar Das
    [J]. Bulletin of Engineering Geology and the Environment, 2021, 80 : 5539 - 5551
  • [8] Influence of elevated temperature on alkali-activated ground granulated blast furnace slag concrete
    Kumar, Virendra
    Kumar, Amit
    Prasad, Brajkishor
    [J]. JOURNAL OF STRUCTURAL FIRE ENGINEERING, 2019, 11 (02) : 247 - 260
  • [9] Basic oxygen furnace and ground granulated blast furnace slag based alkali-activated pastes: Characterization and optimization
    Kabay, Nihat
    Miyan, Nausad
    Ozkan, Hakan
    [J]. JOURNAL OF CLEANER PRODUCTION, 2021, 327
  • [10] Pore solution chemistry of alkali-activated ground granulated blast-furnace slag
    Song, SJ
    Jennings, HM
    [J]. CEMENT AND CONCRETE RESEARCH, 1999, 29 (02) : 159 - 170
12345