Results 71 to 80 of about 7,231 (151)

Understanding effects of silicon/aluminum ratio and calcium hydroxide on chemical composition, nanostructure and compressive strength for metakaolin geopolymers [PDF]

, 2012
There were two objectives for this study. The first was to determine the effects of the Si/Al ratio and calcium hydroxide on the chemical composition and nanostructure for metakaolin geopolymers.
Kim, Eric
core  

Metakaolin–nanosilver as biocide mullite precursor

International Journal of Materials Research, 2012
Abstract Incorporation of silver nanoparticles enhances the biocide functionality of Ag supported kaolinite/metakaolite materials. In this regard, structural evolution of supports in the presence of silver nanoparticles is investigated.
Cabal, Belén, Sanz Lázaro, Jesús, Díaz, Luis A., Torrecillas, Ramón, Moya, J. S.   +4 more
openaire   +2 more sources

Chemical and Microstructural Evolution of Cement Pastes with Additives and SCMs During the First 24 h

Journal of the American Ceramic Society, Volume 109, Issue 5, May 2026.
ABSTRACT Early‐age chemical evolution governs the development of hydrate assemblages and microstructure in cementitious systems, especially when additives and supplementary cementitious materials are incorporated. This study investigates the first 24 h of hydration in Portland cement pastes modified with selected additives and supplementary ...
Adeyemi Adesina
wiley   +1 more source

Effect of rice husk ash addition on the compressive strength and thermal stability of metakaolin based geopolymer

, 2019
The influences of rice husk ash incorporated as partial replacement (by up to 40%) of metakaolin on the thermal stability and microstructures of metakaolin based geopolymer were investigated in this paper.
Zhu, Huajun, Zhang, Zuhua, Wu, Qisheng, Liang, Guangwei   +3 more
core   +1 more source

Quantitative kinetic and structural analysis of geopolymers Part 2. thermodynamics of sodium silicate activation of metakaolin

, 2013
The paper describes the outcomes of a study using isothermal conduction calorimetry (ICC) to characterize the geopolymerization kinetics of metakaolin activated with sodium silicate.
Zhang, Zuhua, Reid, Andrew, Provis, John L., Wang, Hao, Bullen, Frank   +4 more
core   +1 more source

Structural behaviour of metakaolin infused concrete structure

, 2017
This work researched into the use of metakaolin as a partial substitute for cement in concrete, metakaolin was obtained by the calcination of kaolin clay to about 700 0C Cement was replaced with the metakaolin at 0, 5, 10, 15, 20, 25, 30, and 35% at ...
Famoye, A. A., Kuye, S. I., Odunfa, S. O., Akinyele, J. O.   +3 more
core   +1 more source

Amazonian Metakaolin Reactivity for Geopolymer Synthesis [PDF]

, 2019
To determine the viability of using a local resource for geopolymer synthesis, geopolymers were synthesized using metakaolin made from clay mined in the Amazonian region of Brazil.
Ruy A. Sá Ribeiro, Marilene G. Sá Ribeiro, Waltraud M. Kriven, Kutyla, Gregory P., Sá Ribeiro, Marilene G., Ribeiro, Ruy A. Sá, Gregory P. Kutyla, Kriven, Waltraud M.   +7 more
core   +1 more source

Durability of Repair Metakaolin Geopolymeric Cement under Different Factors

, 2022
Nowadays, energy saving, and green sustainability are influencing the development of all industries, including the construction industry. In recent years, geopolymeric cement and concrete have become hot topic materials as a replacement for traditional ...
Bowen Feng, Jiesheng Liu
core   +1 more source

Circular Alkali‐Activated Cements Based on EAF Slags and Biomass Bottom Ash Using Rice Husk Ash–Derived Sodium Silicate

Journal of the American Ceramic Society, Volume 109, Issue 3, March 2026.
ABSTRACT This study investigates sodium silicate (SS) solutions derived from rice husk ash (RHA) dissolved in 8 M NaOH as sustainable activators for alkali‐activated cements (AACs), compared with commercial SS. AACs were produced using a 50:50 blend of electric arc furnace slag (EAFS) and biomass bottom ash (BA). The effects of NaOH/RHA ratio (6.6–2.8)
A. Muñoz‐Castillo, S. Bueno‐Rodríguez, D. Eliche‐Quesada   +2 more
wiley   +1 more source

An investigation on mechanical properties and durability of metakaolin reinforced modified recycled concrete

Case Studies in Construction Materials
This study examined the impact of various combinations of metakaolin and 15% fly ash mix (M) on the mechanical properties and durability of recycled fine aggregate concrete (RFAC), aiming to enhance the properties, cost-effectiveness, and sustainability ...
Chuheng Zhong, Lijuan Zhang, Weiqi Mao, Sijia Xing, Jinhui Chen, Jinzhi Zhou   +5 more
doaj   +1 more source