Properties of mortars made by uncalcined FGD gypsum-fly ash-ground granulated blast furnace slag composite binder

2012 ◽  
Vol 32 (7) ◽  
pp. 1468-1472 ◽  
Author(s):  
Shiyun Zhong ◽  
Kun Ni ◽  
Jinmei Li
Keyword(s):  
Blast Furnace ◽  
Fly Ash ◽  
Blast Furnace Slag ◽  
Composite Binder ◽  
Fgd Gypsum ◽  
Granulated Blast Furnace Slag ◽  
Furnace Slag

The Strength and Microstructure of High Content FGD Gypsum-Fly Ash-Ground Granulated Blast Furnace Slag Composite Binder

2014 ◽  
Vol 584-586 ◽  
pp. 1514-1518
Author(s):  
Kun Ni ◽  
Shi Yun Zhong ◽  
Yun Xing Shi ◽  
Yan Gang Zhang
Keyword(s):  
Blast Furnace ◽  
Fly Ash ◽  
Analysis Of Variance ◽  
Blast Furnace Slag ◽  
Hydration Product ◽  
Range Analysis ◽  
Composite Binder ◽  
Fgd Gypsum ◽  
Granulated Blast Furnace Slag ◽  
Furnace Slag

In this paper, FGD gypsum mixed with fly ash (FA) and ground granulated blast furnace slag (GGBFS) was used as a composite binder. The strength experiments of range analysis and analysis of variance (ANOVA) showed that the optimal proportion of FGD gypsum, FA and GGBFS was 6:3:4. The study of microstructure of hardened paste proved that the hydration product was mainly C-S-H gels and ettringite, and some ettringite crystals grew from C-S-H gels.

scholarly journals Orthogonal Experimental Studies on Preparation of Mine-Filling Materials from Carbide Slag, Granulated Blast-Furnace Slag, Fly Ash, and Flue-Gas Desulphurisation Gypsum

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Mingyue Wu ◽  
Xiangming Hu ◽  
Qian Zhang ◽  
Weimin Cheng ◽  
Zunxiang Hu
Keyword(s):  
Blast Furnace ◽  
Fly Ash ◽  
Flue Gas ◽  
Blast Furnace Slag ◽  
Raw Materials ◽  
Setting Time ◽  
Fgd Gypsum ◽  
Granulated Blast Furnace Slag ◽  
Carbide Slag ◽  
Furnace Slag

Environmentally friendly and cheap composite green cementitious materials have been prepared from carbide slag, fly ash, flue-gas desulphurisation (FGD) gypsum, and granulated blast-furnace slag (GBFS) without using cement clinker. Orthogonal testing was used to investigate the effects of the raw materials on the amount of water required for reaching standard consistency and consistency, setting time, slump value, and strength of the produced materials after curing for 7 d and 28 d. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) techniques were used for the analysis of the sample microstructure and hydration products as well as for the exploration of possible hydration mechanisms. We found that, among the utilised raw materials, the addition of FGD gypsum had the most significant effect on the setting time and amount of water required for reaching standard consistency and consistency, while the addition of GBFS deeply affected the slump value. The optimal activation results were obtained when the mass ratio of carbide slag : fly ash : GBFS : FGD gypsum was equal to 12.1 : 60.6 : 18.2 : 9.1.

scholarly journals Effect of Mineral Admixtures on the Performance of Low-Quality Recycled Aggregate Concrete

Crystals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 596
Author(s):  
Yasuhiro Dosho
Keyword(s):  
Blast Furnace ◽  
Fly Ash ◽  
Blast Furnace Slag ◽  
Recycled Aggregate Concrete ◽  
Recycled Aggregate ◽  
Mineral Admixtures ◽  
Structural Concrete ◽  
Aggregate Concrete ◽  
Granulated Blast Furnace Slag ◽  
Furnace Slag

To improve the application of low-quality aggregates in structural concrete, this study investigated the effect of multi-purpose mineral admixtures, such as fly ash and ground granulated blast-furnace slag, on the performance of concrete. Accordingly, the primary performance of low-quality recycled aggregate concrete could be improved by varying the replacement ratio of the recycled aggregate and using appropriate mineral admixtures such as fly ash and ground granulated blast-furnace slag. The results show the potential for the use of low-quality aggregate in structural concrete.

Study on Sulfate Resistance of Concrete with Compound Mineral Admixture

2011 ◽  
Vol 99-100 ◽  
pp. 420-425 ◽  
Author(s):  
Qian Rong Yang ◽  
Xiao Qian Wang ◽  
Hui Ji
Keyword(s):  
Blast Furnace ◽  
Fly Ash ◽  
Blast Furnace Slag ◽  
Steel Slag ◽  
Sulfate Attack ◽  
Mineral Admixture ◽  
Sulfate Resistance ◽  
Chemical Attack ◽  
Granulated Blast Furnace Slag ◽  
Furnace Slag

The strength, expansion and amount of scaling of concrete with compound mineral admixture (CMA) from steel slag, granulated blast furnace slag and fly ash were studied. The result shows that damage by crystallization press from sulfate attack when concrete was exposed to sulfate environments under wetting–drying alternation is much larger than that from sulfate chemical attack. Adding CMA to concrete could reduce the damage from expansion of concrete caused by sulfate chemical attack, but the resistance of concrete to damage by crystallization press from sulfate attack was remarkably reduced.

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