Results 11 to 20 of about 16,766 (210)
上海师范大学学报. 自然科学版, 2022 In order to study the correlations between the mechanical performances and the components of fly ash-based geopolymer cementitious material, two groups of geopolymer mortar specimens by mixing slag powder and metakaolin separately (mass fraction less ...
WANG Ying +3 more
doaj +1 more source
Hybrid Geopolymers from Fly Ash and Polysiloxanes [PDF]
Molecules, 2019 The preparation and characterization of innovative organic-inorganic hybrid geopolymers, obtained by valorizing coal fly ash generated from thermoelectric power plants, is reported for the first time. These hybrid materials are prepared by simultaneously reacting fly ash and dimethylsiloxane oligomers at 25 °C in a strongly alkaline environment ...
Roviello G. +6 more
openaire +5 more sources
The Use of Borax in Deterring Flash Setting of High Calcium Fly Ash Based Geopolymer [PDF]
, 2016 Geopolymer that was made with high CaO content fly ash was found to have higher compressive strength than the low CaO fly ash, using the same mixture composition.
Antoni, +4 more
core +3 more sources
Rice husk ash and fly ash geopolymer hollow block based on NaOH activated
Case Studies in Construction Materials, 2022 This research aimed to utilize rice husk ash (RHA) to produce rice husk ash and fly ash (FA) geopolymer hollow block based on NaOH activated. RHA was ground for 15, 30, 60, and 90 min.
Rattapon Somna +3 more
doaj +1 more source
Fly-Ash-Based Geopolymers Reinforced by Melamine Fibers [PDF]
Materials, 2021 This paper presents the results of research on geopolymer composites based on fly ash with the addition of melamine fibers in amounts of 0.5%, 1% and 2% by weight and, for comparison, without the addition of fibers. The melamine fibers used in the tests retain their melamine resin properties by 100% and are characterized by excellent acoustic and ...
Barbara Kozub +3 more
openaire +2 more sources
Research on the Pavement Performance of Slag/Fly Ash-Based Geopolymer-Stabilized Macadam
Applied Sciences, 2022 The substitution of slag-based geopolymer materials for cement-stabilized macadam in road bases is in line with the demand for green and sustainable development in the transportation industry.
Jinchao Yue +4 more
doaj +1 more source
Setting Time and Compressive Strength of Geopolymers Made of Three Indonesian Low Calcium Fly Ash with Variation of Sodium Silicate Addition [PDF]
Archives of Metallurgy and Materials, 2021 In this research, the effect of sodium silicate (Na2SiO3) on the geopolymerization of fly ash type F (low calcium) has been studied. The variations of Na2SiO3 used in the synthesized geopolymers were 19, 32, and 41wt%.
Ririn Eva Hidayati +6 more
doaj +1 more source
Geopolymer Mortar with Fly Ash [PDF]
MATEC Web of Conferences, 2016 The cement industry accounts for about 7% of all CO2 emissions caused by humans. Therefore, it is necessary to find another material in order to support sustainable material. An alternative way is replacing cement material with alternative material as fly ash. Fly ash as binder need to be added alkaline activator in the form of sodium silicate (Na2SiO3)
Saloma +3 more
openaire +2 more sources
Infrastructures, 2020 Low-calcium fly ash-based geopolymer concrete is generally reported to be less vulnerable to alkali-silica reaction (ASR) than conventional ordinary Portland cement concrete.
Jiawei Lei, Jiajun Fu, En-Hua Yang
doaj +1 more source
Properties of Geopolymer Mortar Containing Cement Kiln Dust (by-pass) as Partial Replacement Material for Low Calcium Fly Ash [PDF]
Port Said Engineering Research Journal, 2016 This paper presents the results of a study held to compare the properties of geopolymer mortar prepared with the use of class C fly ash. Utilization of cement kiln dust (by-pass) with its high alkali content in the activation of geopolymer mortar ...
Hassan Mohamadien +2 more
doaj +1 more source