Results 81 to 90 of about 23,023 (234)

Alkali-Silica Reaction Resistance and Pore Solution Composition of Low-Calcium Fly Ash-Based Geopolymer Concrete

open access: yesInfrastructures, 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

Research and Advances in the Application of Phosphogypsum in Pavement Base Course and Subgrade: A Review

open access: yesApplied Research, Volume 5, Issue 5, October 2026.
This review highlights how pretreatment and optimized mixture design enable the use of phosphogypsum in pavement base courses and subgrades. Combining physical, chemical, or thermal treatment with suitable binders and solid wastes can improve engineering performance, durability, and environmental safety.
Chiyao Qu   +4 more
wiley   +1 more source

Development of porous geopolymer spheres

open access: yes, 2017
Two simple processes for the production of geopolymer porous spheres are preliminary reported in this study.The processes are based on the formulation of metakaolin-based geopolymer slurries, produced using a potassium-based alkaline activating solution,
R Bendoni, V Medri, E Landi, E Papa
core  

Correlation of microstructure and flexural strength of fly ash geopolymer of varying molarities

open access: yes, 2019
Link to publisher's homepage at https://iopscience.iop.org/The present work studies and compares the flexural properties of fly ash geopolymer with varying molarity of sodium hydroxide (NaOH).
Cheng-Yong, Heah   +5 more
core   +1 more source

Atomistic Insight into N‐A‐S‐H and K‐A‐S‐H Gel Formation and Carbonation‐Related Energetic Response

open access: yesce/papers, Volume 9, Issue 6, Page 162-169, October 2026.
Abstract Sodium or potassium aluminosilicate hydrate gels, namely N‐A‐S‐H and K‐A‐S‐H, are the main reaction products of low‐calcium geopolymers, and the effect of alkali cations on their local structure and carbonation‐related energetic response needs further clarification.
Yanliang Ji   +3 more
wiley   +1 more source

New Geopolymer-Zeolite Composites Materials

open access: yes, 2017
Geopolymers can be regarded as the amorphous counterpart or precursor of crystalline zeolites. Indeed, the final geopolymer structure consists of an amorphous network of SiO4 and AlO4- tetrahedral units connected by oxygens and charge-balanced by ...
J Manaud   +7 more
core  

Verwertung von kalziniertem Tunnelausbruchmaterial als Ausgangsstoff für Beton

open access: yesce/papers, Volume 9, Issue 6, Page 1457-1465, October 2026.
Abstract Weltweit steigt die Nachfrage nach Baustoffen aus Sekundärrohstoffen und Bindemitteln mit geringen CO2‐Emissionen. Gleichzeitig fallen bei Tunnelbauprojekten vor Ort und innerhalb kurzer Zeit große Mengen an Ausbruchmaterial an. Im Mittelpunkt eines Forschungsprojekts wurden geotechnische Eigenschaften von Ausbruchmaterialien (d.h. tonhaltigen
Björn Siebert   +2 more
wiley   +1 more source

Effect of solid to liquid ratio on heavy metal removal by geopolymer-based adsorbent

open access: yes, 2018
Link to publisher's homepage at https://iopscience.iop.org/Microstructure of three-dimensional aluminosilicate which similar to zeolite cause geopolymer based adsorbent accepted in the treatment of wastewater.
Nurliyana, Ariffin   +4 more
core   +1 more source

Influence of PEG Addition on the Reactivity of a Metakaolin‐Based Geopolymer

open access: yesJournal of the American Ceramic Society, Volume 109, Issue 10, October 2026.
PEG induces water redistribution within the activating solution, creating PEG‐rich and silicate‐rich domains that modify the local chemical environment. These interactions influence geopolymerization process and affect the balance between structural stability and flowability.
Xavier Lacambra‐Andreu   +2 more
wiley   +1 more source

Effect on the properties of fresh and hardened concrete made using fly ash geopolymer sand

open access: yes, 2021
Fly ash-based geopolymer fine aggregate is a potential replacement material for the natural river sand as it has similar physicochemical properties.
Thankam, Lizia G.   +2 more
core   +1 more source

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