TY - JOUR
T1 - Synthesis and characterization of economical, multi-functional porous ceramics based on abundant aluminosilicates
AU - Alghamdi, Hussam
AU - Dakhane, Akash
AU - Alum, Absar
AU - Abbaszadegan, Morteza
AU - Mobasher, Barzin
AU - Neithalath, Narayanan
N1 - Publisher Copyright: © 2018
PY - 2018/8/15
Y1 - 2018/8/15
N2 - This paper reports synthesis routes and microstructural and performance characterization of a family of economical, multifunctional porous ceramics developed through geopolymerization of an abundant volcanic tuff (aluminosilicate mineral) as the primary source material. Metakaolin, silica fume, alumina powder, and pure silicon powder are also used as additional ingredients when necessary, and activated by potassium-based alkaline agents. The composition and heat treatment regimes are modified to provide the desired pore structure features for percolation, contaminant retention, and thermal conductivity. The treatment temperatures used are lower than those used in conventional porous ceramics synthesis. Extensive microstructural characterization using different techniques to examine the morphology and to quantify the pore volumes, sizes, and connectivity, which are important in dictating the performance characteristics, are reported. Measurements of flow rates and thermal conductivity demonstrate the multifunctionality of the synthesized matrices, which demonstrate adequate strengths for a number of buildings-related applications.
AB - This paper reports synthesis routes and microstructural and performance characterization of a family of economical, multifunctional porous ceramics developed through geopolymerization of an abundant volcanic tuff (aluminosilicate mineral) as the primary source material. Metakaolin, silica fume, alumina powder, and pure silicon powder are also used as additional ingredients when necessary, and activated by potassium-based alkaline agents. The composition and heat treatment regimes are modified to provide the desired pore structure features for percolation, contaminant retention, and thermal conductivity. The treatment temperatures used are lower than those used in conventional porous ceramics synthesis. Extensive microstructural characterization using different techniques to examine the morphology and to quantify the pore volumes, sizes, and connectivity, which are important in dictating the performance characteristics, are reported. Measurements of flow rates and thermal conductivity demonstrate the multifunctionality of the synthesized matrices, which demonstrate adequate strengths for a number of buildings-related applications.
KW - Aluminosilicate
KW - Geopolymer
KW - Permeability
KW - Pore structure
KW - Porous ceramics
KW - Thermal conductivity
UR - http://www.scopus.com/inward/record.url?scp=85046168750&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85046168750&partnerID=8YFLogxK
U2 - 10.1016/j.matdes.2018.04.060
DO - 10.1016/j.matdes.2018.04.060
M3 - Article
SN - 0264-1275
VL - 152
SP - 10
EP - 21
JO - Materials and Design
JF - Materials and Design
ER -