Results 181 to 190 of about 16,766 (210)

Mechanochemically activated bottom ash-fly ash geopolymer

Cement and Concrete Composites, 2021
Abstract A source of sub-bituminous coal bottom ash was mechanochemically activated by co-grinding fly ash and a sodium silicate powder for use in a geopolymer application. A total of nine different mixes were considered to study the effects of the mechanochemical treatment, mixing procedure, and bottom ash loading.
Seyedsaeid Hosseini, Nicholas A. Brake, Mohammad Nikookar, Özge Günaydın-Şen, Haley A. Snyder   +4 more
openaire   +1 more source

Geopolymerization index of fly ash geopolymers

Vibrational Spectroscopy, 2016
Samples of pozzolanic and geopolymer binders prepared using pozzolanic reaction between lime and fly ash and fly ash activation were used for investigation of the structure of these materials and its relations to the Raman spectra. Binding phase development of these materials and its possible relation to silicate glasses was investigated using Raman ...
Kosor, Tihomir, Nakić-Alfirević, Barbara, Gajović, Andreja   +2 more
openaire   +1 more source

Fly-ash-based geopolymer composites incorporating cold-bonded lightweight fly ash aggregates

Construction and Building Materials, 2021
Abstract In this study, effects of cold-bonded lightweight fine aggregate (LWFA) on the geopolymer composites (GCs) were investigated in terms of fresh, physical, mechanical and durability properties. LWFA and different diameters quartz aggregates were used in the production of fly-ash-based GCs.
Oz, Hatice Oznur, Yucel, Hasan Erhan, Gunes, Muhammet, Koker, Turan Sevki   +3 more
openaire   +1 more source

Spectroscopic studies of fly ash-based geopolymers

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2018
In the present work fly-ash based geopolymers with different contents of alkali-activator and water were prepared. Alkali-activation was conducted with sodium hydroxide (NaOH) at the SiO2/Na2O molar ratio of 3, 4, and 5. Water content was at the ratio of 30, 40, and 50wt% in respect to the weight of the fly ash.
Piotr Rożek, Magdalena Król, Włodzimierz Mozgawa   +2 more
openaire   +2 more sources

Characterization of Geopolymer Materials Containing MSWI Fly Ash and Coal Fly Ash

Advances in Science and Technology, 2010
In this work three samples of MSWI ash have been stabilized in systems containing coal fly ash and able to give geopolymers through a polycondensation reaction. Monolithic products were obtained with both MSWI ashes as received and after chloride partial removal by water washing.
ANDINI S, CIOFFI, Raffaele, COLANGELO, Francesco, FERONE, Claudio, MONTAGNARO F, SANTORO L.   +5 more
openaire   +3 more sources

Lightweight Fly Ash-Based Geopolymer Concrete

Advanced Materials Research, 2012
The experiments of this study were preformed to study the synthesis process for lightweight aggregate geopolymer concrete (LWAGC) using normal sand as a fine aggregate and expanded clay as lightweight aggregate. The LWAGC was synthesized by the alkali activation of a fly ash (FA) as the source material by mixture of liquid alkaline activator.
A. Abdulkareem Omar, Mohd Mustafa Al Bakri Abdullah, Kamarudin Hussin, I. Khairul Nizar   +3 more
openaire   +1 more source

Characterization of Fly Ash on Geopolymer Paste

Materials Science Forum, 2016
The effect of loss of ignition, specific gravity, fineness, specific surface area and soluble fly ash to compressive strength of geopolymer paste were studied. Six fly ashes from two different sources and different time of collection were evaluated. Sodium hydroxide and sodium silicate were used as alkali activator.
Ratni Nurwidayati, Muhammad Bahrul Ulum, Januarti Jaya Ekaputri, null Triwulan, Priyo Suprobo   +4 more
openaire   +1 more source