scholarly journals Rheological and the Fresh State Properties of Alkali-Activated Mortars by Blast Furnace Slag

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2069
Author(s):  
Markssuel Teixeira Marvila ◽  
Afonso Rangel Garcez de Azevedo ◽  
Paulo Ricardo de Matos ◽  
Sérgio Neves Monteiro ◽  
Carlos Maurício Fontes Vieira
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Water Retention ◽  
Mass Density ◽  
Sodium Content ◽  
Squeeze Flow ◽  
Rheological Characterization ◽  
Hardened State ◽  
Furnace Slag

The fresh and rheological properties of alkali mortars activated by blast furnace slag (BFS) were investigated. Consistency tests, squeeze flow, dropping ball, mass density in the hardened state, incorporated air, and water retention were performed. Mortars were produced with the ratio 1:2:0.45 (binder:sand:water), using not only ordinary Portland cement for control but also BFS, varying the sodium content of the activated alkali mortars from 2.5 to 15%. The results obtained permitted understanding that mortars containing 2.5 to 7.5% sodium present a rheological behavior similar to cementitious mortars by the Bingham model. In turn, the activated alkali mortars containing 10 to 15% sodium showed a very significant change in the properties of dynamic viscosity, which is associated with a change in the type of model, starting to behave similar to the Herschel–Bulkley model. Evaluating the properties of incorporated air and water retention, it appears that mortars containing 12.5% and 15% sodium do not have compatible properties, which is related to the occupation of sodium ions in the interstices of the material. Thus, it is concluded that the techniques used were consistent in the rheological characterization of activated alkali mortars.

Characterization of a blast-furnace slag reference material SMP/E1-002

1995 ◽  
Vol 351 (2-3) ◽  
pp. 173-180
Author(s):  
J. J. LaBrecque ◽  
D. V. de Leyt ◽  
C. Vazquez
Keyword(s):  
Blast Furnace ◽  
Reference Material ◽  
Blast Furnace Slag ◽  
Furnace Slag

Synthesis and Characterisation of Slag Based Geopolymers

2010 ◽  
Vol 636-637 ◽  
pp. 155-160 ◽  
Author(s):  
C. Panagiotopoulou ◽  
Glykeria Kakali ◽  
Sotiris Tsivilis ◽  
T. Perraki ◽  
Maria Perraki
Keyword(s):  
Compressive Strength ◽  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Starting Material ◽  
Alkaline Media ◽  
High Compressive Strength ◽  
Geopolymer Matrix ◽  
Furnace Slag ◽  
Alkali Ion

In the present work the geopolymerisation of blast furnace slag (GGBS) under varying conditions is being investigated. The experimental comprises the following parts: i) dissolution of slag in alkaline media and the investigation of the effect of the alkali ion (K or Na) on the dissolution of Al+3 and Si4+, ii) synthesis of slag based geopolymers and the investigation of the effect of the Si/Al ratio and the kind of alkaline ion on the development of the compressive strength and iii) characterization of geopolymers by means of XRD, FTIR and SEM/EDS measurements. As it is concluded, blast furnace slag geopolymers exhibit high compressive strength, with the maximum being 112.7±2 MPa. The Si/Al ratio of the starting material is found to affect strongly the development of the geopolymer compressive strength. The microstructure of slag–based geopolymers and the incorporation of Ca in the geopolymer matrix are also discussed.

Characterization of Delayed Coke and Fluid Coke Gasification Using Blast Furnace Slag as a Disposable Catalyst

2019 ◽  
Vol 33 (7) ◽  
pp. 6734-6741 ◽  
Author(s):  
Rongxuan Linghu ◽  
Yindong Liu ◽  
Yuming Zhang ◽  
Yongmin Zhang ◽  
Jinsen Gao ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Fluid Coke ◽  
Furnace Slag

Preparation and Characterization of Desulfurization Sorbent from Hydrated Lime and Blast Furnace Slag

2008 ◽  
pp. 1548-1551
Author(s):  
Guo Zhuo Gong ◽  
Shu Feng Ye ◽  
Feng Li ◽  
Yan Bin Cui ◽  
Ya Jun Tian ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Hydrated Lime ◽  
Furnace Slag

scholarly journals The Characterization of Fixation of Ba, Pb, and Cu in Alkali-Activated Fly Ash/Blast Furnace Slag Matrix

Materials ◽  
2016 ◽  
Vol 9 (7) ◽  
pp. 533 ◽  
Author(s):  
Jan Koplík ◽  
Lukáš Kalina ◽  
Jiří Másilko ◽  
František Šoukal
Keyword(s):  
Blast Furnace ◽  
Fly Ash ◽  
Blast Furnace Slag ◽  
Furnace Slag ◽  
Alkali Activated

Preparation and Characterization of Desulfurization Sorbent from Hydrated Lime and Blast Furnace Slag

2008 ◽  
Vol 368-372 ◽  
pp. 1548-1551
Author(s):  
Guo Zhuo Gong ◽  
Shu Feng Ye ◽  
Feng Li ◽  
Yan Bin Cui ◽  
Ya Jun Tian ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Flue Gas ◽  
Calcium Silicate ◽  
Blast Furnace Slag ◽  
Hydrated Lime ◽  
Experiment Design ◽  
Factorial Experiment ◽  
Calcium Silicate Hydrates ◽  
Furnace Slag

A series of sorbents for SO2 in flue gas were prepared from hydrated lime and blast furnace slag using a factorial experiment design. It is found that the reaction between hydrated lime and blast furnace slag is fast. The reactivities of the as-prepared sorbents are higher than those of hydrated lime alone due to the formation of calcium silicate hydrates, and hence the utilization of hydrated lime as well as the Ca in the blast furnace slag is improved. Furthermore, the effects of preparation variables on the reactivity of the sorbents are also discussed.

Development and Characterization of Cementing Composites with Blast Furnace Slag Replacement

2014 ◽  
Vol 976 ◽  
pp. 246-250
Author(s):  
Reyna Sánchez-Ramírez ◽  
Manuela Diaz-Cruz ◽  
Sebastían Díaz de La Torre ◽  
Enrique Rocha-Rangel
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Bending Strength ◽  
Isothermal Calorimetry ◽  
Oil Wells ◽  
X Ray Diffraction ◽  
Hydration Kinetics ◽  
X Ray ◽  
Furnace Slag

In this work, they were produced and characterized cementing composites made with blast furnace slag replacement, for their use in the construction of oil wells. To this, slurries were prepared with a replacement of 20 and 30% slag, as well as a slurry with 100 % slag and a slurry with 100% H-cement were prepared. Starting materials were characterized by chemical analysis, X-ray diffraction and Fourier Transformed Infra Red. Slurries also were activated with sodium silicate in order to study theirs hydration kinetics, driving by isothermal calorimetry. These studies were complemented by the preparation of specimens of 4 X 4 X 16 cm to which they determine its compressive and bending strength during 2 and 28 days of curing. From the results it can be concluded that it was obtained a product that can be effectively used in the construction of oil wells.

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