Reactivity and performance of dry granulation blast furnace slag cement

Liu, Junxiang; Yu, Qingbo; Zuo, Zongliang; Yang, Fan; Han, Zhicheng; Qin, Qin

doi:10.1016/j.cemconcomp.2018.10.008

Cited by 44 publications

(20 citation statements)

References 22 publications

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“…While the size of GGBFS used as cement substitute can vary from 0.1 to 250 µm, which is the size distribution of typical cement particles. The size of GGBFS as a cement substitute depends on the milling time [41]. Therefore, it can be tailored to match the size distribution of cement.…”

Section: Ground Granular Blast-furnace Slag (Ggbfs)mentioning

confidence: 99%

“…It has been proven that greenhouse gas emissions are reduced when using GGBFS as a cement replacement [18,19]. On the other hand, the mechanical properties were also investigated regarding compressive strength and ductility [21,41,58,59,75,[153][154][155]. Although GGBFS might develop lower early-age strength of concrete, an equivalent or even greater 28-day strength can be gained.…”

Section: Ground Granular Blast-furnace Slag (Ggbfs)mentioning

confidence: 99%

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Green Concrete: By-Products Utilization and Advanced Approaches

et al. 2019

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The popularity of concrete has been accompanied with dreadful consumptions that have led to huge carbon footprint in our environment. The exhaustion of natural resources is not yet the problem, but also the energy that is needed for the fabrication of the natural materials, in which this process releases significant amount of carbon dioxide (CO2) emissions into the air. Ordinary Portland Cement (OPC) and natural aggregates, which are the key constituents of concrete, are suggested to be recycled or substituted in order to address the sustainability concern. Here, by-products have been targeted to reduce the carbon footprint, including, but not limited to, fly ash, rice husk ash, silica fume, recycled coarse aggregates, ground granular blast-furnace slag, waste glass, and plastic. Moreover, advanced approaches with an emphasis on sustainability are highlighted, which include the enhancement of the hydration process in cement (calcium-silicate hydrate) and the development of new materials that can be used in concrete (e.g. carbon nanotube). This review paper provides a comprehensive discussion upon the utilization of the reviewed materials, as well as the challenges and the knowledge gaps in producing green and sustainable concrete.

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Section: Ground Granular Blast-furnace Slag (Ggbfs)mentioning

confidence: 99%

Section: Ground Granular Blast-furnace Slag (Ggbfs)mentioning

confidence: 99%

Green Concrete: By-Products Utilization and Advanced Approaches

et al. 2019

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“…Granulated Blast Furnace Slag diperoleh dengan memadamkan Blast Furnace Slag dari tanur tiup berupa air atau uap, untuk menghasilkan produk granular yang mengandung komponen silika yang kemudian dikeringkan. GBFS ini selanjutnya di dihaluskan menggunakan Raw Milling Machine dan diayak setelah melalui proses filterisasi menghasilkan semen slag (Divsholi et al, 2014;Liu et al, 2019) Gambar 3. Grafik kuat tekan mortar dengan semen slag dan mortar dengan semen Portland 70,45%…”

Section: Semen Slag (Ggbfs)unclassified

Studi Penggunaan Semen Slag sebagai Substitusi Semen Portland pada Beton

Setiadji¹,

Dewabrata²,

Lie³

et al. 2020

Siklus

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Era kini ditandai dengan penekanan pada konsevasi energi, beton ramah lingkungan dan beton hijau. Semen merupakan bahan utama pembentuk beton, dan juga penyumbang pencemaran udara terbesar di antara bahan penyusun material tersebut. Semen slag atau Ground Granulated Blast Furnace Slag (GGBFS) yang merupakan hasil pengolahan limbah industri baja menjadi salah satu alternatif yang diminati karena proses produksi dan lebih ekonomis bila dibandingkan dengan Portland Cement (PC). Material yang mempunyai sifat cementitious ini berpotensi untuk menggantikan sebagian semen dalam campuran beton dengan tetap mempertahankan kelebihan sifat mekanis beton. Penelitian ini dilakukan di laboratorium dengan pengujian benda uji yang telah didesain dengan komposisi substitusi semen slag sebesar 0%, 10%, 20%, 30%, 40%, dan 50% dari berat semen yang dibutuhkan dan pada umur 28 hari. Sebagai benda uji kontrol beton direncanakan dengan kuat tekan f’c = 38 MPa. Semen slag yang digunakan berdasarkan referensi memiliki activity index grade 80. Penelitian dilakukan untuk mengetahui kinerja semen slag pada beton melalui pengamatan kuat tekan (f’c), hubungan tegangan-regangan (fc - ε) dan modulus elastisitas (E) beton. Pengujian menunjukkan bahwa substitusi slag menyebabkan terjadinya penurunan kuat tekan beton, regangan dan modulus elastisitas pada umur 28 hari karena adanya proses kimia yang lebih lamban daripada PC.

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“…Liu et al [19] reported a 28-day compressive strength of 49.5 MPa for a blended cement with dry granulation slag. A later study found that increasing the replacement level of this dry granulation slag from 33.33% to 60%, the 28-day compressive strength of slag cement decreased first, then increased [20].…”

Section: Introductionmentioning

confidence: 99%

Reactivity and Hydration Property of Synthetic Air Quenched Slag with Different Chemical Compositions

Wang

Cui

et al. 2019

Materials

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Air quenched slag is processed by a fast air cooling method which is developed with the advantages of recovering heat from molten slag and water conservation compared to the water quenching method. Air quenched slags with different chemical compositions are synthesized in the lab by designing three chemical composition ratios: (CaO + MgO)/(SiO2 + Al2O3), CaO/MgO and SiO2/Al2O3, which are donated as CM/SA, C/M and S/A, respectively. The effect of different chemical compositions on the phase compositions of synthetic air quenched slag, the strength and hydration properties of slag blends were investigated by using various characterization techniques. The results show that the amorphous content of air quenched slag decreased with the increasing basicity CM/SA of slag. The S/A ratio of slag was the dominant factor for the compressive strength of slag blends at 28 days and negatively correlated with strength. Decreasing the S/A ratio of slag increased the reactivity of slag and its reaction degree indicated by higher hydration heat release, lower CH content, greater chemical combined water amount and denser microstructure. Moreover, thermodynamic modelling revealed that a higher S/A of slag leads to the increase of C-(A)-S-H and AFt contents, whilst decreasing the amounts of Ht, AFm-SO4 phases and the total volume of hydrates.

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Reactivity and performance of dry granulation blast furnace slag cement

Cited by 44 publications

References 22 publications

Green Concrete: By-Products Utilization and Advanced Approaches

Green Concrete: By-Products Utilization and Advanced Approaches

Studi Penggunaan Semen Slag sebagai Substitusi Semen Portland pada Beton

Reactivity and Hydration Property of Synthetic Air Quenched Slag with Different Chemical Compositions

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