Preparation and properties of glass–ceramics derived from blast-furnace slag by a ceramic-sintering process

Liu, Hongyu; Lu, Hongxia; Chen, Deliang; Wang, Hailong; Xu, Hongliang; Zhang, Rui

doi:10.1016/j.ceramint.2009.05.001

Cited by 83 publications

(37 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Lately, the waste of coal combustion ash, fly ash and filter dusts from waste incinerators, mud from metal hydrometallurgy, by-pass cement dust, different types of sludge and glass cullet or mixtures of them have been considered for the production of glass-ceramics [2][3][4]. Using waste to prepare glass-ceramics is significant for industrial applications as well as for environmental protection and scientific importance with proper correction of the chemical composition [5,6].…”

Section: Introductionmentioning

confidence: 99%

Influence of Cr2O3, LiF, CaF2 and TiO2 nucleants on the crystallization behavior and microstructure of glass-ceramics based on blast-furnace slag

Khater

2011

Ceramics International

117

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Influence of Cr2O3, LiF, CaF2 and TiO2 nucleants on the crystallization behavior and microstructure of glass-ceramics based on blast-furnace slag

Khater

2011

Ceramics International

117

View full text Add to dashboard Cite

“…Finally, existing concrete structures suffer durability issues due to chemical deteriorations, such as chloride attacks, corrosion, and peaks of the identified phases. Table 1 and Figure 1 show that both raw materials are general fly ash and GGBFS [25][26][27]. A mixture of NaOH and Na2SiO3 (reagent grade, 10.6% Na2O, 26.5% SiO2, 62.9% H2O, SigmaAldrich, St. Louis, MO, USA) was used as the alkaline activator.…”

Section: Introductionmentioning

confidence: 99%

A Comparison Study for Chloride-Binding Capacity between Alkali-Activated Fly Ash and Slag in the Use of Seawater

Jun

Yoon

2017

Applied Sciences

View full text Add to dashboard Cite

Featured Application: The results of this study can be applied to the production of cementless concrete using seawater.Abstract: This study aimed to investigate the chloride-binding capacity of alkali-activated fly ash (denoted as FSW) and slag (denoted as SSW) samples and their synthesized Cl-bearing phases, which are capable of binding and immobilizing chloride when seawater is used as the mixing water. This study also examined the progressive changes in the pore structures of the FSW and SSW samples over time. The results show that the SSW sample is significantly more effective in the uptake of chloride ions compared to the FSW sample at 28 days of curing. While the FSW sample forms Cl-bearing zeolites (Cl-chabazite and Cl-sodalite) (possibly with similar types of geopolymeric gels), the SSW sample synthesizes Cl-bearing, layered double hydroxides (LDH) (Cl-hydrocalumite and Cl-hydrotalcite). Although both samples involve Cl-binding phases, the FSW sample is likely to be less efficient because it largely produces zeolites (or similar geopolymeric gels) with no Cl-binding capability (i.e., zeolites X and Y). Meanwhile, the SSW sample produces Cl-bearing LDH phases as well as C-S-H(I), which can physically adsorb chloride. The SSW sample exhibits both pore-size refinement and porosity reduction over time, while the FSW sample only exhibits pore-size refinement. Therefore, the SSW system is more advantageous in the use of seawater because it more effectively prevents Cl ingression due to greater impermeability.

show abstract

“…The glass phase of the glassceramics decreased dramatically. Crystallization is induced by bulk nucleation, since crystallization occurs throughout the entire sample volume (Leroy et al 2001;Liu et al 2009), giving rise to the three-dimensional connectivity and quite a large amount of fine-grained (0.2-1 lm) microstructure, which has higher strength and fracture toughness, since the expansion of the micro cracks was hindered by a large number of grain boundaries. The threedimensional connectivity structure was generated by the spinodal decomposition and the split phase.…”

Section: Properties Of Glass-ceramicsmentioning

confidence: 99%

Production of glass–ceramics from heavy metal gypsum and pickling sludge

Pan

Yang

et al. 2015

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

The aim of this investigation was to propose a preparation method of glass-ceramics derived from heavy metal gypsum and pickling sludge, as well as stabilization of Pb, Zn, Cd, As, Hg, Cr and Ni heavy metals. The process consists of the following two stages: the desulfurization of heavy metal gypsum and the preparation of glass-ceramics. Heavy metal gypsum was desulfurized by excess glass powder at 1,473 K and formed calcium silicate and silicon dioxide as intermediate products. The intermediate products, pickling sludge and small amounts of CaO and MgO were used as major raw materials for preparing parent glass. Glass-ceramics was produced by conventional heating method, which included a nucleation stage (973 K, 2 h) and a crystallization stage (1,173 K, 1 h). The main crystalline phase of the obtained glass-ceramics is akermanite (Ca 2 MgSi 2 O 7 ). A high microhardness of 5.3 GPa and a bending strength of 206 MPa, as well as a water absorption lower than 0.13 % were obtained. The leaching of toxic elements in glass-ceramics was much lower than the Environmental Protection Agency 1311 method requirement.

show abstract

Preparation and properties of glass–ceramics derived from blast-furnace slag by a ceramic-sintering process

Cited by 83 publications

References 11 publications

Influence of Cr2O3, LiF, CaF2 and TiO2 nucleants on the crystallization behavior and microstructure of glass-ceramics based on blast-furnace slag

Influence of Cr2O3, LiF, CaF2 and TiO2 nucleants on the crystallization behavior and microstructure of glass-ceramics based on blast-furnace slag

A Comparison Study for Chloride-Binding Capacity between Alkali-Activated Fly Ash and Slag in the Use of Seawater

Production of glass–ceramics from heavy metal gypsum and pickling sludge

Contact Info

Product

Resources

About