Browsing by Author "Ubolluk Rattanasak"

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Comparative study on the characteristics of fly ash and bottom ash geopolymers

Wichian Chalee; Prinya Chindaprasirt; Ubolluk Rattanasak; Chai Jaturapitakkul (2009)

This research was conducted to compare geopolymers made from fly ash and ground bottom ash. Sodium hydroxide (NaOH) and sodium silicate (Na(2)SiO(3)) solutions were used as activators. A mass ratio of 1.5 Na(2)SiO(3)/NaOH ...
Influence of fineness of rice husk ash and additives on the properties of lightweight aggregate

Ubolluk Rattanasak; Parinya Chindaprasirt; Chai Jaturapitakkul (2009)

In this paper, the preparation of lightweight aggregate (LWA) from rice husk ash (RHA) obtained from a biomass power plant was studied. As-received and ground RHAs were mixed with sodium hydroxide solution (NaOH) and cured ...
Influence of NaOH solution on the synthesis of fly ash geopolymer

Prinya Chindaprasirt; Ubolluk Rattanasak (2009)

A study was conducted on leaching of fly ash mixed with NaOH solution and on mixing procedure for preparing geopolymer. Leaching of SiO2 and Al2O3 was investigated by mixing fly ash with NaOH solution for different time ...

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