Results 1 to 10 of about 14,729 (212)

Influence of Size Reduction of Fly Ash Particles by Grinding on the Chemical Properties of Geopolymers [PDF]

open access: yesApplied Sciences, 2018
Chemical properties of geopolymers were evaluated from the reduction of fly ash particle size by grinding. X-ray diffraction determined that at early curing ages new crystalline phases appear in the matrix of the geopolymer and they remain for 28 days ...
Carlos Antonio Rosas-Casarez   +6 more
doaj   +5 more sources

Influence of silica-fume’s addition technique and curing conditions on microstructure, physical and mechanical properties of geopolymer [PDF]

open access: yesScientific Reports
Geopolymer as ecofriendly and energy saving material is estimated as excellent building material in construction sector. The current study focuses on studying the influence of silica fume mixing technique, its contents (2.3, 4.6, 6.9%) and curing ...
Hala A. Hossein   +2 more
doaj   +2 more sources

Sustainable Ash-Based Geopolymers

open access: yesChemical Engineering Transactions, 2018
The valorisation of industrial solid by-products into geopolymers, a new class of inorganic polymers, provides two main benefits. Firstly, it solves a significant waste management problem by the transformation of potentially dangerous industrial wastes ...
Vayos G Karayannis   +3 more
doaj   +2 more sources

Durability of geopolymers and geopolymer concretes: A review

open access: yesReviews on Advanced Materials Science, 2021
Geopolymers are green materials with three-dimensional silicon and aluminum tetrahedral structures that can be serving as environmentally friendly construction materials and therefore have the potential to contribute to sustainable development.
Lingyu Tian   +3 more
doaj   +2 more sources

Effect of Naoh Molar Concentration on Microstructure and Compressive Strength of Dolomite/Fly Ash-Based Geopolymers [PDF]

open access: yesArchives of Metallurgy and Materials, 2022
Dolomite can be used as a source of aluminosilicate to produce geopolymers; however, this approach is limited by its low reactivity. This study analyzes the viability of producing geopolymers using dolomite/fly-ash with sodium silicate and NaOH solutions
Emy Aizat Azimi   +9 more
doaj   +1 more source

A review of 3D printing low-carbon concrete with one-part geopolymer: Engineering, environmental and economic feasibility

open access: yesCase Studies in Construction Materials, 2023
3D printing is a developing technology that has the ability to use different materials to produce concrete elements with complex shapes. The utilization of geopolymers or alkali-activated materials (AAMs) in 3D printing is receiving significant interest ...
Yazeed A. Al-Noaimat   +3 more
doaj   +1 more source

Geopolymers as Sustainable Material for Strengthening and Restoring Unreinforced Masonry Structures: A Review

open access: yesBuildings, 2021
Unreinforced masonry (URM) structures are vulnerable to earthquakes; thus, materials and techniques for their strengthening and restoration should be developed. However, the materials used in some of the existing retrofitting technologies for URM and the
Anabel B. Abulencia   +8 more
doaj   +1 more source

Effects of potassium-silicate, sands and carbonates concentrations on metakaolin-based geopolymers for high-temperature applications

open access: yesOpen Ceramics, 2022
Geopolymers can be optimized to have interesting physical characteristics, which are influenced by the raw materials and additives utilized in their formulations. For this reason, various formulations of two metakaolin-based binders with filler additions
Paolo Scanferla   +4 more
doaj   +1 more source

Simple Compressive Strength Results of Sodium-Hydroxide- and Sodium-Silicate-Activated Copper Flotation Tailing Geopolymers

open access: yesApplied Sciences, 2022
Geopolymers are created by mixing a source of aluminosilicates, which can be natural or by-products of other industries, with an alkaline solution, which dissolves the aluminates and silicates present in this source, where after a polymerization process,
Hengels Castillo   +4 more
doaj   +1 more source

Research on thermal stability of coal gasification coarse slag based geopolymer

open access: yes矿业科学学报, 2022
Coal gasification crude slag can be used as a precursor to prepare geopolymer, and its high temperature resistance needs to be further explored.
Lü Zhengye   +4 more
doaj   +1 more source

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