Hydration activity of slag

The mineral phase evolution characteristics and hydration activity

2024年3月25日  Increasing the initial alkalinity of the liquid phase can significantly improve the early hydration activity of the active mineral phase in the steel slag The inert component RO 2006年11月29日  Reaction models are proposed to quantify the hydration products and to determine the composition of C–S–H from alkaliactivated slags (AAS) Products of the slag The hydration of slag, part 1: reaction models for alkaliactivated 2023年10月1日  The hydration activity of RO phases was found to decrease exponentially with the rise in the molar ratio (x) of FeO to MgO in the synthetic RO phase (MgOxFeO), while the Improving the hydration activity and volume stability of the RO 2022年11月9日  We found that acetic acid could activate the hydration properties of steel slag powder to a certain extent and improve its strength Minerals in steel slag, such as Mg2Al(OH)7, fCaO, C3S, C2S, C2F, and RO phases, could be Effect and Mechanism of Acetic Acid to Improve the

Hydration activity and mechanical properties of steel

2021年9月10日  In this article, the hydration activity and mechanical properties of steel slag used as cementitious materials were studied Results showed the steel slag was difficult to hydrate at room temperature within 3 days After the steel 2020年5月4日  In this study, the RO phase in SS was extracted and synthesized The synthetic RO phase was hydrated under autoclave conditions, and its hydration activity was analyzed Hydration Activity and Expansibility Model for the RO Phase in 2020年9月28日  In this paper, the hydration process and microstructure of alkaliactivated materials with steel slag as a cementitious material and fine aggregate were studied The phase composition and micromorphology of hydration Hydration and Microstructure of Steel Slag as 2024年5月10日  Slag is a kind of pozzolanic materials, but SS contains minerals of C 2 S (2CaOSiO 2), C 3 S (3CaOSiO 2), C 2 F (2CaOFe 2 O 3) and C 4 AF (4CaOAl 2 O 3 Fe 2 O 3), resulting in it having its own hydraulic properties Effect of Steel Slag on Hydration Kinetics and

The Effect of Removing HardtoGrind Minerals from Steel Slag on

2023年8月22日  It is found that the removal rate of hardtogrind minerals in steel slag is the highest when steel slag enters magnetic separation particle size of 1 mm and magnetic field strength of 1400 Gs Compared with untreated steel slag, the grinding efficiency of treated steel slag can be increased by 22%, and the hydration activity is not affected2019年11月1日  In nature, the hydration activity is the reactivity between CaO and water, which was similar to the reaction of CaO with CO 2 (carbonation reactivity or CO 2 capture capacity) [32], [33]Previous research indicated that the particle size, the content of free CaO and pore structure all play important roles in hydration activity [16], [32]For example, CaO with the Relationship between pore structure and hydration activity of 2023年1月31日  Steel slag (SS) accounts for 15–20% of steelmaking output; its application in cement concrete has been limited because of poor stability In this study, the divalent metal oxide solid solution (RO phase) in SS was analogue synthesised to study its hydration activity and expansibility The results showed that the hydration activity and expansibility of magnesium Hydration activity and expansibility of different divalent metal 2021年6月22日  Slag is widely used as mineral admixtures in cementbased materials by its potential hydration activity It has the advantage of saving resources and energy, reducing carbon emission, improving Research Progress of Slag Structure and Hydration Activity

A discussion on improving hydration activity of steel slag by

2011年2月28日  Steel slag inhibits the earlyage hydration of cement However, its mechanism is still unclear In this paper, the earlyage hydration kinetics and the evolution of the solid phases, aqueous species and microstructures in a cementsteel slag composite binder are investigated to explore how steel slag inhibits the earlyage hydration of cement2021年9月10日  Request PDF Hydration Activity and Mechanical Properties of Steel Slag Used as Cementitious Materials The massive steel slag not only occupies land resources but also pollutes the environment Hydration Activity and Mechanical Properties of Steel Slag Used 2012年2月1日  The hydration activity of the steel slag treated with oxalic acid decreased and the volume expansibility of the steel slag was effectively restrainedEarly Hydration Activity of Composite with Carbonated Steel Slag2021年9月10日  Results showed the steel slag was difficult to hydrate at room temperature within 3 days After the steel slag was autoclaved at 215°C, 2 MPa for 3 h, its hydration degree was 1/3 of that of Portland cement The expansion rate of the steel slagcement cementitious materials increased linearly with the increase of steel slag contentHydration activity and mechanical properties of steel slag used

Effect of Fe and Mn on the hydration activity of fCaO in steel slag

2024年3月29日  The fCaO in steel slag is generated during the calcination process at high temperature In this process, CaO will form CaOFeO phase and CaO MnO phase with FeO and MnO [21], which leads to the compositional and structural differences between fCaO in steel slag and ordinary CaO and the hydration activity of the two being different as a result2024年3月22日  Researchers have studied the cement hydration properties using the fineness of stainless steel slag Kriskova [11] and others used superfine stainless steel slag powder with a specific surface area of 400–550 m 2 /kg to enhance cement hydration performance The grinding process of stainless steel slag transforms crystalline phases into amorphous structures, Study on the hydration characteristics of steel slag cement2019年10月25日  Hydration Activity and Expansibility Model for the RO Phase in Steel Slag JIWEI HOU, ZHIMIN CHEN, and JIAXIANG LIU The low hydration activity and volumetric instability of steel slag (SS) limits its application as a binding material SS contains approximately 30 pct of a divalent metal oxide solid solution (RO phase)Hydration Activity and Expansibility Model for the RO Phase in Steel Slag2022年11月9日  We found that acetic acid could activate the hydration properties of steel slag powder to a certain extent and improve its strength Minerals in steel slag, such as Mg2Al(OH)7, fCaO, C3S, C2S Effect and Mechanism of Acetic Acid to Improve the Hydration Activity

Hydration Characteristics and Microstructure of AlkaliActivated Slag

2023年1月1日  Tan et al [67] performed a comparative study of the influence of Na 2 SO 4 and Na 2 CO 3 as alkali activators for slag hydration products They observed the appearance of AFt when Na 2 SO 4 was used as the alkali activator, as shown in Fig 13 [67] This was consistent with the previous reports on slag hydration products [53], [69], [70], [107 2024年7月19日  However, due to the low hydration activity of BOF slag, the original particle shape remained intact even after 3 d of hydration at 60°C This suggests that hydration of BOF slag primarily occurs on the particle surface, indicating that the CaCO 3 layer plays a significant role in the slag's hydration activity Download: Download highres image Unveiling the impact of carbonation treatment on BOF slag hydration 2021年2月1日  Steel slag inhibits the earlyage hydration of cement However, its mechanism is still unclear In this paper, the earlyage hydration kinetics and the evolution of the solid phases, aqueous species and microstructures in a cementsteel slag composite binder are investigated to explore how steel slag inhibits the earlyage hydration of cementInhibition mechanisms of steel slag on the earlyage hydration of 2024年9月23日  The hydration activity index of both the SS and carbonized BOF slag was studied in accordance with the standard GB/T 204912017 “Steel slag powder used for cement and concrete” For this purpose, SS or carbonized BOF slag was used to replace 30 wt % of cement in order to produce mortar with dimensions of 40 mm × 40 mm × 160 mmEffect of Carbonation Degree on Mineral Composition,

The hydration of slag, part 1: reaction models for alkaliactivated

2006年11月29日  Reaction models are proposed to quantify the hydration products and to determine the composition of C–S–H from alkaliactivated slags (AAS) Products of the slag hydration are first summarized from observations in literature The main hydration products include C–S–H, hydrotalcite, hydrogarnet, AFm phases (C4AH13 and C2ASH8) and ettringite 2024年10月11日  Heat treatment is also a common method of enhancing slag hydration activity For example, steel slag easily forms fCaO and Ca–Mn–Mg–Fe solid solutions during production, reducing steel slag cementitious materials’ hydration activity and stability [9]Effect and mechanism of calcination on improving the hydration activity 2019年9月15日  To improve the properties of ground granulated blast furnace slag (GGBS) and utilize ground granulated blast furnace slag efficiently, this study investigates the effect of fineness on the hydration activity index (HAI) of ground granulated blast furnace slag The hydration activity index of GGBS with six specific surface areas (SSAs) was characterized by the ratio of The Effect of Fineness on the Hydration Activity Index of Ground 2019年9月15日  hydration activity index (HAI) of ground granulated blast furnace slag The hydration activity index of GGBS with six specific surface areas (SSAs) was characterized by the ratio of compressive The Effect of Fineness on the Hydration Activity Index of Ground

The Effect of Fineness on the Hydration Activity Index of Ground

DOI: 103390/ma Corpus ID: ; The Effect of Fineness on the Hydration Activity Index of Ground Granulated Blast Furnace Slag @article{Dai2019TheEO, title={The Effect of Fineness on the Hydration Activity Index of Ground Granulated Blast Furnace Slag}, author={Jinpeng Dai and Qicai Wang and Chao Xie and Yanjin Xue and Yun Duan and 2024年2月2日  Steel slag is considered to improve the road performance of cold mixed asphalt (CMA) due to its superior physicochemical characteristics To realize the potential application of steel slag in CMA pavement, the alkalinity, hydration activity, pore characteristics, and threedimensional (3D) morphology were quantitatively characterized and evaluated based on the X Quantitative characterization and evaluation of key 2016年2月1日  In recent years, some of polar organic chemicals as grinding aids are extensively studied to improve the grinding efficiency and hydration performance of cement, slag, fly ash and so on [22], [23], [24], [25]The reason is that these organic grinding aids have strong adsorption property on the solid particles and the grinding aids molecules adsorbed on the particles can Particle characteristics and hydration activity of ground 2020年9月28日  Due to the low hydration activity and poor volume stability, extensive steel slag utilization is restricted In this paper, the hydration process and microstructure of alkaliactivated materials with steel slag as a cementitious material and fine aggregate were studied The phase composition and micromorphology of hydration products were measured using XRD, NMR Hydration and Microstructure of Steel Slag as Cementitious Material

Study on the particle morphology, powder characteristics and hydration

2021年2月8日  Ballmilled slag powder has better hydration activity than that of verticalrollermilled slag powder 4 The difference in the homogeneity coefficients of the two powders is important to the obvious differences in the particle characteristics and hydration activities of the ballmilled and verticalrollermilled slagsSlag hydration is basically the dissolution of the SiO4 chain structure of slag and also of AlO6 present in it by OH− attack Consequently, Ti has no significant effect on the activity of slag when the content of TiO 2 is less than 4% The activity and dissolution rate of slag with a higher TiO 2 content are lowerSlag Hydration an overview ScienceDirect Topics2024年4月25日  Aiming to enhance the comprehensive utilization of steel slag (SS), a solid wastebased binder consisting of SS, granulated blast furnace slag (BFS), and desulfurization gypsum (DG) was designed and prepared This study investigated the reaction kinetics, phase assemblages, and microstructures of the prepared solid wastebased cementitious materials Effects of Steel Slag on the Hydration Process of Solid Waste2022年6月14日  In order to investigate the effect and mechanism of coupled mechanical–chemical activation on the hydration activity of copper slag powder, copper slag powder with different grinding time and Effect of Coupled MechanicalChemical Activation on Hydration Activity

Study on Carbonization Activated Binary fCaO Phase in Steel Slag

In this study, binary fCaO in steel slag was simulated and prepared By synthesizing different proportions of binary fCaO, the influence of carbonization on the binary fCaO, its carbonization performance, and hydration activity were investigated When the iron content increased, the hydration activity of binary fCaO decreased, and the hydration rate of the CaO03FeO 2024年2月21日  Therefore, this article selects glycerol (C3H8O3) as a grinding aid to mechanically excite steel slag, exploring the mineral phase evolution and hydration activity excitation mechanism of steel Effect of glycerol mechanical excitation on the phase evolution 2023年8月22日  It is found that the removal rate of hardtogrind minerals in steel slag is the highest when steel slag enters magnetic separation particle size of 1 mm and magnetic field strength of 1400 Gs Compared with untreated steel slag, the grinding efficiency of treated steel slag can be increased by 22%, and the hydration activity is not affectedThe Effect of Removing HardtoGrind Minerals from Steel Slag on 2019年11月1日  In nature, the hydration activity is the reactivity between CaO and water, which was similar to the reaction of CaO with CO 2 (carbonation reactivity or CO 2 capture capacity) [32], [33]Previous research indicated that the particle size, the content of free CaO and pore structure all play important roles in hydration activity [16], [32]For example, CaO with the Relationship between pore structure and hydration activity of

Hydration activity and expansibility of different divalent metal

2023年1月31日  Steel slag (SS) accounts for 15–20% of steelmaking output; its application in cement concrete has been limited because of poor stability In this study, the divalent metal oxide solid solution (RO phase) in SS was analogue synthesised to study its hydration activity and expansibility The results showed that the hydration activity and expansibility of magnesium 2021年6月22日  Slag is widely used as mineral admixtures in cementbased materials by its potential hydration activity It has the advantage of saving resources and energy, reducing carbon emission, improving Research Progress of Slag Structure and Hydration Activity2011年2月28日  Steel slag inhibits the earlyage hydration of cement However, its mechanism is still unclear In this paper, the earlyage hydration kinetics and the evolution of the solid phases, aqueous species and microstructures in a cementsteel slag composite binder are investigated to explore how steel slag inhibits the earlyage hydration of cementA discussion on improving hydration activity of steel slag by 2021年9月10日  Request PDF Hydration Activity and Mechanical Properties of Steel Slag Used as Cementitious Materials The massive steel slag not only occupies land resources but also pollutes the environment Hydration Activity and Mechanical Properties of Steel Slag Used

Early Hydration Activity of Composite with Carbonated Steel Slag

2012年2月1日  The hydration activity of the steel slag treated with oxalic acid decreased and the volume expansibility of the steel slag was effectively restrained2021年9月10日  Results showed the steel slag was difficult to hydrate at room temperature within 3 days After the steel slag was autoclaved at 215°C, 2 MPa for 3 h, its hydration degree was 1/3 of that of Portland cement The expansion rate of the steel slagcement cementitious materials increased linearly with the increase of steel slag contentHydration activity and mechanical properties of steel slag used 2024年3月29日  The fCaO in steel slag is generated during the calcination process at high temperature In this process, CaO will form CaOFeO phase and CaO MnO phase with FeO and MnO [21], which leads to the compositional and structural differences between fCaO in steel slag and ordinary CaO and the hydration activity of the two being different as a resultEffect of Fe and Mn on the hydration activity of fCaO in steel slag 2024年3月22日  Researchers have studied the cement hydration properties using the fineness of stainless steel slag Kriskova [11] and others used superfine stainless steel slag powder with a specific surface area of 400–550 m 2 /kg to enhance cement hydration performance The grinding process of stainless steel slag transforms crystalline phases into amorphous structures, Study on the hydration characteristics of steel slag cement

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