Results 61 to 70 of about 14,729 (212)

Using boron as a tracer reveals how surface precipitates inhibit silicate dissolution in hyperalkaline solutions during alkali–silica reaction

Journal of the American Ceramic Society, Volume 109, Issue 1, January 2026.
Abstract Silicate dissolution under hyperalkaline conditions is a key process that affects the evolution of alkali–silica reaction (ASR) in concrete. In these environments, dissolution may involve multiple overlapping processes—including ion adsorption on reactive sites, transport of dissolved species, and the formation of alteration layers.
Rui Xiao, Adriano Souza Leão, Mehrdad Torabzadegan, Erika La Plante, Gaurav N. Sant   +4 more
wiley   +1 more source

Heat Treatment of Geopolymer Samples Obtained by Varying Concentration of Sodium Hydroxide as Constituent of Alkali Activator

Gels, 2022
In this paper, raw natural metakaolin (MK, Serbia) clay was used as a starting material for the synthesis of geopolymers for thermal treatment. Metakaolin was obtained by calcination of kaolin at 750 °C for 1 h while geopolymer samples were calcined at ...
Ljiljana Kljajević, Miloš Nenadović, Marija Ivanović, Dušan Bučevac, Miljana Mirković, Nataša Mladenović Nikolić, Snežana Nenadović   +6 more
doaj   +1 more source

Evolution of Unconfined Compressive Strength and Microstructural Properties of Geopolymers From Blended Waste Concrete Powder and Metakaolin

Advances in Civil Engineering, Volume 2026, Issue 1, 2026.
The use of waste concrete powder (WCP) in geopolymer synthesis offers a sustainable method for recycling construction and demolition waste (CDW). However, its low reactivity and high calcium content frequently result in geopolymers with inadequate mechanical strength.
Wu Chen, Zhiduo Zhu, Afaq Ahmad
wiley   +1 more source

Behaviors and Mechanisms of Adsorption of MB and Cr(VI) by Geopolymer Microspheres under Single and Binary Systems

Molecules
Geopolymers show great potential in complex wastewater treatment to improve water quality. In this work, general geopolymers, porous geopolymers and geopolymer microspheres were prepared by the suspension curing method using three solid waste products ...
Yi Fang, Lang Yang, Feng Rao, Kaiming Zhang, Zhuolin Qin, Zhenguo Song, Zhihui Na   +6 more
doaj   +1 more source

Study on properties of geopolymers for application in transport means [PDF]

, 2013
Disertační práce je věnovaná studiu alkalicky aktivovaných materiálů na bázi elektrárenského popílku, zejména možnosti jejich využití jako vysokoteplotních tmelů pro aplikace v dopravní technice. Adheze geopolymerů s kovem nebyla dodnes široce studovaná.
Halas, Olena
core   +1 more source

Ligand‐Engineered Mesoporous Silica: Cutting‐Edge Architectures for Targeted Toxic Heavy Metal Sequestration—A Review

Advances in Materials Science and Engineering, Volume 2026, Issue 1, 2026.
The mesoporous silica (MPS) modified with organic ligands has been effectively employed since last decade as a nonconventional, highly efficient, and selective adsorbent for the removing of heavy metal ions (HMIs) from their aqueous media. Therefore, this research paper is focused on reviewing various research works carried out on the use of ligand ...
Shah Hussain, Muhammad Kashif, Mahboob Ali, Misbah Gul, Shohreh Azizi, Malik Maaza, Mohammad Rezwan Habib   +6 more
wiley   +1 more source

Environmentally Friendly Pervious Concrete for Treating Deicer-Laden Stormwater: Phase II [PDF]

, 2018
In Phase I of this project, graphene oxide (GO)-modified pervious concrete was developed using coal fly ash as the sole binder. The primary objectives of Phase II of this project were (1) to evaluate the stormwater infiltration capacity of GO-modified ...
Shi, Xianming, Xu, Gang
core  

Alkali-Activated Cement-Based Binders (AACBs) as durable and cost-competitive low-CO2 binder materials: some shortcomings that need to be adressed [PDF]

, 2017
Available online 14 October 2016.The production of 1 t of ordinary Portland cement generates 0.55 t of chemical CO2 and requires an additional 0.39 t of CO2 in fuel emissions for baking and grinding, accounting for a total of 0.94 t of CO2.
Abdollahnejad, Abdollahnejad, Abdollahnejad, Ali, Allahverdi, Aperador, Azevedo, Bakharev, Bernal, Bernal, Criado, Cristelo, Cyr, Damtoft, Davidovits, Davidovits, Davies, Duxson, Duxson, Fernandez-Jimenez, García-Lodeiro, Gartner, Habert, Juenger, Kani, Ke, Kolousek, Law, Lloyd, McLellan, Ouellet-Plamondon, Pacheco Torgal, Pacheco Torgal, Pacheco Torgal, Pacheco Torgal, Pacheco Torgal, Pacheco-Torgal, Pacheco-Torgal, Peng, Poowancum, Provis, Provis, Provis, Puertas, Puertas, Puertas, Reed, Ribeiro, Rowles, Skvara, Skvara, Stanton, Taylor, Temuujin, Turner, Van Deventer, Weil, Wood, Zhang, Škvára   +59 more
core   +1 more source

Integrating Copper Slag Into Thermally Active Building Foundations: A Pathway to Sustainable Underground Energy Storage Systems

International Journal of Energy Research, Volume 2026, Issue 1, 2026.
Underground thermal energy storage (UTES) integrated with building foundations is an emerging pathway to decarbonize space conditioning by shifting low‐carbon heat across seasons. This review evaluates copper slag, a high‐density, thermally stable byproduct of smelting, as a dual‐function medium for thermally active foundations.
Michael Enemuo, Arash Dahi Taleghani, Ngozi Enemuo, Olumide Ogunmodimu, Sivaraj Durairaj   +4 more
wiley   +1 more source

Development of a Low-Density Waste-Based Geopolymer Construction Material

Buildings
The construction industry, integral to national infrastructure development, faces environmental challenges attributed to Portland cement’s high energy consumption and carbon dioxide emissions during production.
Brian Ncube, Rishen Roopchund
doaj   +1 more source