Results 81 to 90 of about 14,729 (212)

Concrete retrofitting using CFRP and geopolymer mortars [PDF]

, 2011
A new development in the repair and strengthening of reinforced concrete systems is the use of carbon fiber reinforced polymers (CFRP) strips bonded to concrete substrate with epoxy resins.
Aguiar, J. L. Barroso de, Fernandes, S., Pacheco-Torgal, F., Vasconcelos, E.   +3 more
core  

Isolation and characterisation of microorganisms contaminating herbal infusion sold in Minna, Nigeria [PDF]

, 2015
The microbiological assessment of ten herbal infusion samples from ten different locations in Minna, Niger State was investigated. The assessment of the microbial contamination on the herbal products was carried out, using standard methods.
Abdulsalam, R., Abioye, O. P., Adabar, N.U., Adelere, I. A., Ademujimi, M. M., Al-Gheethi, Adel A., Bala, J. D., Kaizar, H., Kuta,, F. A.   +8 more
core   +1 more source

Slags as Thermal Energy Storage Media for Concentrated Solar Power and Renewable Energy Integration

Energy Storage, Volume 7, Issue 8, December 2025.
ABSTRACT The growing demand for low‐cost, high‐performance thermal energy storage (TES) materials has prompted interest in repurposing metallurgical slags in concentrated solar power (CSP) systems. This review critically evaluates the potential of various steel, copper, and aluminum slags as high‐temperature TES media in packed‐bed configurations ...
Michael Enemuo, Ngozi Enemuo, Arash Dahi Taleghani, Olumide Ogunmodimu   +3 more
wiley   +1 more source

Eco-concrete: one-part geopolymer mixes [PDF]

, 2013
The geopolymerization of alumino-silicate materials is a complex chemical process evolving dissolution of raw materiais, transportation or orientation and polycondensation of the reaction products.
Abdollahnejad, Zahra, Aguiar, J. L. Barroso de, Pacheco-Torgal, F.   +2 more
core  

Atomistic simulations of water‐driven structural and mechanical changes in N–A–S–H gels

Journal of the American Ceramic Society, Volume 108, Issue 12, December 2025.
Abstract This study employs molecular dynamics simulations to investigate the effect of varying water content (0–25 wt.%) and Si/Al ratio (1–3) on the atomistic structure and elastic properties of sodium aluminosilicate hydrates (N–A–S–H) gels. Results show that water molecules break the aluminosilicate framework by forming hydroxyl groups on AlO4 and ...
Eashow Shamo, Thibault Charpentier, Angélique Rousselet, Laurent Van Brutzel, Alain Chartier   +4 more
wiley   +1 more source

Recent progress of porous geopolymers: nanoporosity regulation toward fundamental applications

Journal of Asian Ceramic Societies
Porous geopolymers have been the promising subject over the last decade owing to the functional domains from high surface area, structural stability upon heat and chemists, as well as eco-friendly and economy.
Hui-Yu Zhao, Gui-Lang Liu, Zhegang Huang, Long Yi Jin, Yi-Rong Pei   +4 more
doaj   +1 more source

Durability of alkali-activated binders: a clear advantage over Portland cement or an unproven issue? [PDF]

, 2012
The alkali activation of alumino-silicate materials is a complex chemical process evolving dissolution of raw materials, transportation or orientation and polycondensation of the reaction products.
Abdollahnejad, Zahra, Camões, Aires, Ding, Yining, Jamshidi, M., Pacheco-Torgal, F.   +4 more
core   +1 more source

Sodium‐based, geopolymer foamed composites reinforced with phosphate mine waste particulates and hemp/basalt fibers

Journal of the American Ceramic Society, Volume 108, Issue 12, December 2025.
Abstract This study investigated the mechanical, microstructural, and thermal properties of Na‐based geopolymer foams (GPFs) reinforced with varying amounts of two types of reinforcements: raw phosphate mine waste rock (PMWR) as a particulate filler, and natural (hemp) or synthetic (basalt) fibers.
Sanae Sbi, Andrew Stumpf, Abdelilah Aboulayt, Nawal Semlal, Jones Alami, Youssef Tamraoui, Waltraud M. Kriven   +6 more
wiley   +1 more source

Concrete retrofitting using metakaolin geopolymer mortars and CFRP [PDF]

, 2011
This paper presents results about the use of metakaolin based geopolymers mortars for retrofitting purposes. Two main situations are addressed, the use of geopolymeric mortars as a repairing layer or as a binding agent to insure the adhesion between CFRP
Aguiar, J. L. Barroso de, Fernandes, S., Pacheco-Torgal, F., Vasconcelos, E.   +3 more
core   +1 more source

Fayalite-Based Geopolymer Foam

Ceramics
The present work is the first study exploring the potential of geopolymer foams based on fayalite slag, an industrial by-product, as the primary precursor, for lightweight and fireproof construction applications. The research involved the synthesis and characterization of geopolymer foams with varying water to solid ratio, followed by testing their ...
Aleksandar Nikolov, Mihail Tarassov, Ivan Rostovsky, Miryana Raykovska, Ivan Georgiev, Kinga Korniejenko   +5 more
openaire   +2 more sources