Results 11 to 20 of about 7,891 (225)

Durability of geopolymers and geopolymer concretes: A review

Reviews 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, Dongpo He, Jianing Zhao, Hongguang Wang   +3 more
doaj   +2 more sources

Silico-Aluminophosphate and Alkali-Aluminosilicate Geopolymers: A Comparative Review [PDF]

Frontiers in Materials, 2019
Chemically activated materials (often termed as geopolymer) have received attracting attentions in civil, material and environmental research fields as a toolkit alternative to traditional Portland cement in specific applications.
Yan-Shuai Wang, Yazan Alrefaei, Jian-Guo Dai   +2 more
doaj   +3 more sources

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

Scientific 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, A. A. El-Kheshen, M. F. Zawrah   +2 more
doaj   +2 more sources

Development of functional geopolymers for water purification, and construction purposes [PDF]

Journal of Saudi Chemical Society, 2016
This paper deals with the development of functional geopolymers based on local resources such as kaolinitic soil and zeolitic tuff for the construction of water storage containers and water transfer channels. The effect of water content on the mechanical
M. Alshaaer, B. El-Eswed, R.I. Yousef, F. Khalili, H. Rahier   +4 more
doaj   +2 more sources

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

Archives 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, M.A.A. Mohd Salleh, Mohd Mustafa Al Bakri Abdullah, Ikmal Hakem A. Aziz, Kamarudin Hussin, Jitrin Chaiprapa, Petrica Vizureanu, Sorachon Yoriya, Marcin Nabiałek, Jerzy J. Wyslocki   +9 more
doaj   +1 more source

The influence of thermodynamic parameters on alkaline activator of geopolymers and structure of geopolymers [PDF]

Macedonian Journal of Chemistry and Chemical Engineering, 2021
Thermodynamic parameters (densities, viscosities, speed of sound, and refractive index) of four series of alkaline activators were determined over the temperature range from 15 to 60 °C for the process of geopolymerization. Mixtures of Na2SiO3and NaOH of different molar concentrations (from 2M to 8M with step 2) were used as an alkaline activator.
Ivanović, Marija, Nenadović, Snežana, Pavlović, Vera P., Radović, Ivona, Kijevčanin, Mirjana, Pavlović, Vladimir B., Kljajević, Ljiljana   +6 more
openaire   +8 more sources

Geopolymers as alternative sustainable binders for stabilisation of clays - A Review [PDF]

, 2021
The need to transit to greener options in soil stabilisation has revamped research on the use of industrial and agricultural by-products in order to cut down on the current carbon footprint from the use of ordinary Portland cement (OPC) and lime related ...
Abbey, Samuel J, Kashyap, Anil, Samuel J. Abbey, Jeremiah, Jeremiah J, Colin A. Booth, Booth, Colin A, Jeremiah J. Jeremiah, Anil Kashyap   +7 more
core   +2 more sources

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

Case 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, Seyed Hamidreza Ghaffar, Mehdi Chougan, Mazen J. Al-Kheetan   +3 more
doaj   +1 more source

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

Buildings, 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, Ma. Beatrice D. Villoria, Roneh Glenn D. Libre, Pauline Rose J. Quiatchon, Ithan Jessemar R. Dollente, Ernesto J. Guades, Michael Angelo B. Promentilla, Lessandro Estelito O. Garciano, Jason Maximino C. Ongpeng   +8 more
doaj   +1 more source

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

Open 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, Ameni Gharzouni, Nathalie Texier-Mandoki, Xavier Bourbon, Sylvie Rossignol   +4 more
doaj   +1 more source