title: Fly ash porous material using geopolymerization process for high temperature exposure.
abstract: This paper presents the results of a study on the effect of temperature on geopolymers manufactured using pozzolanic materials (fly ash). In this paper, we report on our investigation of the performance of porous geopolymers made with fly ash after exposure to temperatures from 600 °C up to 1000 °C. The research methodology consisted of pozzolanic materials (fly ash) synthesized with a mixture of sodium hydroxide and sodium silicate solution as an alkaline activator. Foaming agent solution was added to geopolymer paste. The geopolymer paste samples were cured at 60 °C for one day and the geopolymers samples were sintered from 600 °C to 1000 °C to evaluate strength loss due to thermal damage. We also studied their phase formation and microstructure. The heated geopolymers samples were tested by compressive strength after three days. The results showed that the porous geopolymers exhibited strength increases after temperature exposure.
authors.affiliation: School of Material Engineering, University Malaysia Perlis (UniMAP), P.O. Box 77, D/A Pejabat Pos Besar, Kangar, Perlis 01000, Malaysia.
authors.forename: Mohd Mustafa Al Bakri
authors.initials: MMAB
authors.lastname: Abdullah
authors.affiliation: School of Material Engineering, University Malaysia Perlis (UniMAP), P.O. Box 77, D/A Pejabat Pos Besar, Kangar, Perlis 01000, Malaysia.
authors.forename: Liyana
authors.initials: L
authors.lastname: Jamaludin
authors.affiliation: School of Material Engineering, University Malaysia Perlis (UniMAP), P.O. Box 77, D/A Pejabat Pos Besar, Kangar, Perlis 01000, Malaysia.
authors.forename: Kamarudin
authors.initials: K
authors.lastname: Hussin
authors.affiliation: King Abdul Aziz City Science & Technology (KACST), P.O. Box 6086, Riyadh 11442, Kingdom of Saudi Arabia.
authors.forename: Mohamed
authors.initials: M
authors.lastname: Bnhussain
authors.affiliation: School of Material Engineering, University Malaysia Perlis (UniMAP), P.O. Box 77, D/A Pejabat Pos Besar, Kangar, Perlis 01000, Malaysia.
authors.forename: Che Mohd Ruzaidi
authors.initials: CMR
authors.lastname: Ghazali
authors.affiliation: School of Material Engineering, University Malaysia Perlis (UniMAP), P.O. Box 77, D/A Pejabat Pos Besar, Kangar, Perlis 01000, Malaysia.
authors.forename: Mohd Izzat
authors.initials: MI
authors.lastname: Ahmad
mesh_terms: D060729:Coal Ash / Q000737:chemistry*; D019245:Compressive Strength / Q000502:physiology*; D004055:Differential Thermal Analysis; D006358:Hot Temperature; D008855:Microscopy, Electron, Scanning; D058105:Polymerization; D011108:Polymers / Q000737:chemistry* / Q000378:metabolism; D016062:Porosity; D017640:Silicates / Q000737:chemistry; D012972:Sodium Hydroxide / Q000737:chemistry; D014867:Water / Q000737:chemistry
chemical_list: D060729:Coal Ash; D011108:Polymers; D017640:Silicates; D014867:Water; D012972:Sodium Hydroxide; C005691:sodium silicate