Influence of microstructural characteristics on fracture toughness of refractory materials

García‐Prieto, Ana; Ramos-Lotito, Manuel Dos; Gutiérrez-Campos, Delia; Pena, P.; Baudı́n, Carmen

doi:10.1016/j.jeurceramsoc.2014.12.020

Cited by 17 publications

(3 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Dense particles and some small needle-shaped particles were observed. These needle-shaped particles are characteristic of the mullite phase [53]. Thermal analysis of the refractory waste was performed by plotting TG/DTG (Fig.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of the use of silica-alumina refractory waste as a supplementary cementitious material

et al. 2021

View full text Add to dashboard Cite

The use of supplementary cementitious materials (SMCs) is one of the three essential factors for the sustainability of the cement industry. To reduce CO 2 emissions, several studies have introduced new methods for the utilization of industrial wastes such as the addition into cementitious materials. The objectives of this study were to chemically and physically characterize refractory ceramic industry waste and determine its viability as an SMC. The pozzolanic characteristics or SMC characteristics of the refractory waste were investigated using standard tests. The results revealed that the refractory waste was mainly composed of Al 2 O 3 and SiO 2 . The mineralogical analysis revealed that the mullite was the major phase of the waste, followed by small amounts of cristobalite and quartz phases. The results of the modified Chapelle test and pozzolanic activity index with lime after 7 days indicated that the waste did not meet the minimum pozzolanicity required by the standard. However, the waste improved the mechanical resistance of the cement specimens containing the waste after 28 days compared with the reference sample, indicating the promising potential of the material for this application. This result indicated that the refractory waste shows a filler type effect, and thus, can be employed as an SCM.

show abstract

Section: Resultsmentioning

confidence: 99%

Evaluation of the use of silica-alumina refractory waste as a supplementary cementitious material

et al. 2021

View full text Add to dashboard Cite

show abstract

“…1. Hydraulic (cement and hydratable alumina) [34] 2. Chemical (phosphoric acid, silicates, geopolymers, etc.)…”

Section: Ceramics and Refractoriesmentioning

confidence: 99%

Utilization of Compounds of Phosphorus

Ptáček¹

2016

Apatites and Their Synthetic Analogues - Synthesis, Structure, Properties and Applications

View full text Add to dashboard Cite

The last chapter of this book provides brief description of utilization of apatites and phosphorus-bearing compounds in industry and material science research. Since the chemistry of phosphorus is quite complicated and a quickly developing field of science, the topics described below are only limited insights to chemically bonded ceramics and refractories, dental phosphate cements, oil-well cements, phosphate glasses and glass ceramics. Chapter continues with description of functional phosphate materials applied as solid oxide fuel cells electrolytes, sensors, phosphors, catalysts and coatings. The chapter ends with introduction of basic ideas for biological apatite in bone tissue engineering, collagen apatite composites, apatite layers and biocoatings.

show abstract

“…The main thermomechanical and thermophysical properties of refractories are related to their ability to withstand different degrees of thermal and mechanical stresses, and to resist corrosion by liquids and gases 1,2 . These properties depend on the characteristics of raw materials and formulations (chemical and mineralogical composition, particle size and shape distribution) the forming process and sintering temperature [3][4][5] .…”

Section: Introductionmentioning

confidence: 99%

Refractory Ceramics of Clay and Alumina Waste

et al. 2021

View full text Add to dashboard Cite

Refractory ceramics were produced from clays and alumina waste. Specimens were shaped by uniaxial pressing, subjected to thermal analysis by dilatometry and heat-treated in a conventional furnace at 1300 and 1400ºC, applying a heating rate of 5ºC/min and a dwell time of 2 and 3 hours at the maximum temperature. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and physicomechanical properties. The dilatometric analysis before heat treatment indicated that the formulation containing the largest amount of fluxing oxides presented the highest linear shrinkage. The XRD analysis revealed that mullite was the major phase and needle shaped crystals typical of mullite obtained from clay minerals were observed by SEM. The increase in firing temperature and dwell time at the maximum temperature improved the physicomechanical properties of the specimens. The thermal expansion coefficient (TEC) in the range of 25 to 1000ºC varied from 6.2 to 6.9 x 10 -6°C-1 .

show abstract

Influence of microstructural characteristics on fracture toughness of refractory materials

Cited by 17 publications

References 39 publications

Evaluation of the use of silica-alumina refractory waste as a supplementary cementitious material

Evaluation of the use of silica-alumina refractory waste as a supplementary cementitious material

Utilization of Compounds of Phosphorus

Refractory Ceramics of Clay and Alumina Waste

Contact Info

Product

Resources

About