Microstructural evolution of amorphous self‐healing geopolymer composites containing alumina and glass frit
نویسندگان
چکیده
Abstract Geopolymer refers to a large group of nanoporous, nanoparticulate materials that are synthesized by dissolution and polycondensation aluminosilicates in basic solutions can be made from variety starting materials, such as industrial waste ash, volcanic rock, or calcined clay. Geopolymers X‐ray amorphous, corrosion resistant, refractory, at ambient temperature pressure similar cements. In this study, potassium metakaolin‐based geopolymer (KGP) composites containing alumina platelets glass frit were fabricated, the impact heating temperature, dwell time, heating/cooling rate on microstructure was studied. The composites, heat treated up 900°C for 20 h using rates 1°C/min, showed addition prevented major microcracking also able reduce linear shrinkage. Glass has been shown heal microcracks formed during KGP dehydration crystallization. resulting material had an open porosity less than 1% uniform surface glaze 250 μm thickness, while Oswald ripening round closed pores occurred due migration molten system.
منابع مشابه
Preparation and evaluation of geopolymer composites containing alumina particles at ambient temperature and after heating
In this research, geopolymer composites were prepared using metakaolin along with silica fume and potassium hydroxide as alkaline activators and alumina particles. The effect of alumina particle size to achieve castable microstructure and their mechanical properties were investigated. Different Si:Al mole ratio (1.5, 2, 2.5 and 3) and K:Si mole ratio (0.20, 0.25, 0.33) were formulated and the s...
متن کاملUtilization of Alumina Waste and Silica Waste for Geopolymer Production
This research studies the utilization of alumina waste and silica waste for geopolymer production. Alumina waste was obtained from aluminium thermal metallurgy industry, silica waste was obtained from silicone recycle industry in Thailand. This present study aimed at investigating the basic physical and chemical properties of waste materials and also the optimal proportion in geopolymer product...
متن کاملCeramics Bonding Using Solder Glass Frit
Ceramics bonding is becoming an important technology and has found wide applications in different engineering and electronic industries. In this paper, furnace bonding of ceramics using solder glass frit was investigated with emphasis on the effects of surface treatment and bonding conditions on bonding strength. Alumina (Al2O3) sheet and SCHOTT solder glass G017-393 were used as the base and b...
متن کاملInvestigations on the Reinforcement of Mechanical Properties of Gypsum Composites Containing E-glass Woven Fabrics
Glass fiber reinforced gypsum composites are new building materials that have been used in covering interior walls. Reinforcement by means of woven fabrics as a three dimensional material is an alternative to the use of short fibers. The application of appropriate fabrics can improve mechanical properties of gypsum composites. The aim of this research article is to investigate the effect of the...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International journal of ceramic engineering & science
سال: 2022
ISSN: ['2578-3270']
DOI: https://doi.org/10.1002/ces2.10154