Kinetics and physico-chemical properties of alkali activated blast-furnace slag/basalt pastes

Didamony, H. El; Assal, H. H.; Sokkary, T.M.; Abdel‐Gawwad, Hamdy A.

doi:10.1016/j.hbrcj.2012.10.002

Cited by 16 publications

(5 citation statements)

References 6 publications

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“…Table 4 lists the characteristic peak attributions for all the curves. It can be observed that there are three small peaks marked as 'A', 'B' and 'C', belonging to evaporable water or moisture loss from 50Slag_50FA undegraded binding matrix [80][81][82] , decomposition of C-A-S-H and C-A-H [83][84][85] and decomposition of carbonates (e.g. calcite) [86,87], respectively.…”

Section: Differential Thermogravimetry (Dtg)mentioning

confidence: 99%

Degradation resistance of different cementitious materials to phosphoric acid attack at early stage

Ren

Zhang

Walkley

et al. 2022

Cement and Concrete Research

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Section: Differential Thermogravimetry (Dtg)mentioning

confidence: 99%

Degradation resistance of different cementitious materials to phosphoric acid attack at early stage

Ren

Zhang

Walkley

et al. 2022

Cement and Concrete Research

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“…BFS is a by-product of the metallurgical industry that consists mainly of lime and calcium-magnesium aluminum-silicates [8]. The rapid cooling of molten slag with excess water provides a glassy material with an amorphous structure.…”

Section: Sorbent Materialsmentioning

confidence: 99%

Kinetic of nickel (II) removal from aqueous solution using different particle size of water - cooled blast furnace slag

El-Dars

Elngar²,

Abdel-Rahim

et al. 2015

Desalination and Water Treatment

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2015)Kinetic of nickel (II) removal from aqueous solution using different particle size of water -cooled blast furnace slag, Desalination and Water Treatment, 54:3, 769-778, A B S T R A C TThe adsorption of nickel (II) from aqueous solution onto different particle sizes of watercooled blast furnace slag (WCBFS) was investigated. Batch experiments were performed to study the effect of contact time, initial concentration of nickel ions, initial pH of the solution, and temperature. The data was fitted to Langmuir and Freundlich isotherm models. The results showed that the Langmuir model better fitted the data obtained for the large-sized particles, while that for the finer-sized particles followed the Freundlich model best. Overall, the process was considered a second-order reaction which involved some degree of intraparticle diffusion. The calculated energy of activation indicated that it was a chemisorption process for both fine-and coarse-sized particles. In conclusion, the finest WCBFS particle size (0.3 mm) showed a good potential as an adsorbent to remove this divalent metal ions from solution.

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“…There is also a vibration band for the stretching of Si-O-A at 1062.90 cm −1 . The Si-O-Al was determined by the peaks found between 700 and 1100 cm −1 [18]. In the peak from 1400 to 1450 cm −1 it was noticed the temperature rose to 1000 • C. As the peak shifted to 1411.56 cm −1 , the strength of the composite decreased.…”

Section: Ftir Specteramentioning

confidence: 99%

Mechanical Properties of Fly Ash-Based Geopolymer Concrete Incorporation Nylon66 Fiber

et al. 2022

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This study was carried out to investigate the effect of the diamond-shaped Interlocking Chain Plastic Bead (ICPB) on fiber-reinforced fly ash-based geopolymer concrete. In this study, geopolymer concrete was produced using fly ash, NaOH, silicate, aggregate, and nylon66 fibers. Characterization of fly ash-based geopolymers (FGP) and fly ash-based geopolymer concrete (FRGPC) included chemical composition via XRF, functional group analysis via FTIR, compressive strength determination, flexural strength, density, slump test, and water absorption. The percentage of fiber volume added to FRGPC and FGP varied from 0% to 0.5%, and 1.5% to 2.0%. From the results obtained, it was found that ICBP fiber led to a negative result for FGP at 28 days but showed a better performance in FRGPC reinforced fiber at 28 and 90 days compared to plain geopolymer concrete. Meanwhile, NFRPGC showed that the optimum result was obtained with 0.5% of fiber addition due to the compressive strength performance at 28 days and 90 days, which were 67.7 MPa and 970.13 MPa, respectively. Similar results were observed for flexural strength, where 0.5% fiber addition resulted in the highest strength at 28 and 90 days (4.43 MPa and 4.99 MPa, respectively), and the strength performance began to decline after 0.5% fiber addition. According to the results of the slump test, an increase in fiber addition decreases the workability of geopolymer concrete. Density and water absorption, however, increase proportionally with the amount of fiber added. Therefore, diamond-shaped ICPB fiber in geopolymer concrete exhibits superior compressive and flexural strength.

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Kinetics and physico-chemical properties of alkali activated blast-furnace slag/basalt pastes

Cited by 16 publications

References 6 publications

Degradation resistance of different cementitious materials to phosphoric acid attack at early stage

Degradation resistance of different cementitious materials to phosphoric acid attack at early stage

Kinetic of nickel (II) removal from aqueous solution using different particle size of water - cooled blast furnace slag

Mechanical Properties of Fly Ash-Based Geopolymer Concrete Incorporation Nylon66 Fiber

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