Effect of Calcined Hydrotalcite on Hydration and Mechanical Strength of Cement-Fly Ash Cementitious Material

被引：0
|
作者：
Xie J. [1 ,2 ]
Zhang X. [1 ,2 ]
Long W. [1 ,2 ]
机构：
[1] College of Civil and Transportation Engineering, Shenzhen University, Shenzhen
[2] Guangdong Province Key Laboratory of Durability for Marine Civil Engineering, Shenzhen
来源：
Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | 2022年 / 50卷 / 02期
关键词：
Calcined hydrotalcite; Compressive strength; Fly ash; Hydration; Microstructure;
D O I：
10.14062/j.issn.0454-5648.20210758
中图分类号：
学科分类号：
摘要：
The mechanical properties, hydration process and microstructure characteristics of the calcined hydrotalcite modified cementitious material at different fly ash contents were analyzed. Based on the results by the compressive strength test calcined hydrotalcite can greatly improve the compressive strength of cement-fly ash mortar. The phase composition of hardened cement paste was characterized by X-ray diffractionand and thermogravimetric analysis. The results show that calcined hydrotalcite can promote the hydration of cement-fly ash cementitious materials, thereby increasing the content of hydration products. It is incidiacted that calcined hydrotalcite can accelerate the dissolution of fly ash, and its nucleation effect is beneficial to the formation of hydration products. © 2022, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.
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页码：396 / 402
页数：6
相关论文
共 39 条
  • [1] LONG W J, LI H D, MEI L, Et al., Damping characteristics of PVA fiber-reinforced cementitious composite containing high-volume fly ash under frequency-temperature coupling effects, Cem Concr Compos, 118, (2021)
  • [2] REZAEI M, BINDIGANAVILE V., Alkali-activated fly ash foams for narrow-trench reinstatement, Cem Concr Compos, 119, (2021)
  • [3] ZHAO H, SUN W, WU X, Et al., The properties of the self-compacting concrete with fly ash and ground granulated blast furnace slag mineral admixtures, J Clean Prod, 95, pp. 66-74, (2015)
  • [4] JOSEPH S, SNELLINGS R, CIZER O., Activation of Portland cement blended with high volume of fly ash using Na<sub>2</sub>SO<sub>4</sub>, Cem Concr Compos, 104, (2019)
  • [5] ALGHAZALI H H, ALJAZAERI Z R, MYERS J J., Effect of accelerated curing regimes on high volume fly ash mixtures in precast manufacturing plants, Cem Concr Res, 131, (2020)
  • [6] XIE J, KOU S C, MA H, Et al., Advances on properties of fiber reinforced recycled aggregate concrete: Experiments and models, Constr Build Mater, 277, (2021)
  • [7] HANEHARA S, TOMOSAWA F, KOBAYAKAWA M, Et al., Effects of water/powder ratio, mixing ratio of fly ash, and curing temperature on pozzolanic reaction of fly ash in cement paste, Cem Concr Res, 31, 1, pp. 31-39, (2001)
  • [8] LOTHENBACH B, SCRIVENER K, HOOTON R D., Supplementary cementitious materials, Cem Concr Res, 41, 12, pp. 1244-1256, (2011)
  • [9] PAYA J, MONZO J, BORRACHERO M V, Et al., Mechanical treatment of fly ashes. Part I: Physico-chemical characterization of ground fly ashes, Cem Concr Res, 25, 7, pp. 1469-1479, (1995)
  • [10] PAYA J, MONZO J, BORRACHERO M V, Et al., Mechanical treatment of fly ashes part II: Particle morphologies in ground fly ashes (GFA) and workability of GFA-cement mortars, Cem Concr Res, 26, 2, pp. 225-235, (1996)
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