Results 61 to 70 of about 4,574,504 (206)

The influence of zeolites on hydration process of mineral binders

Budownictwo i Architektura, 2013
This paper presents the results of physical and chemical properties of zeolite - clinoptilolite (Z), on the basis of which its usefulness in different terms and applications was assessed.
Jan Małolepszy, Ewelina Grabowska
doaj   +1 more source

Carbonation Performance of Low‐Clinker Binders Incorporating Calcined Clay and Natural Pozzolan: Role of w/CaOreactive and Mortar‐to‐Concrete Scale Transition

ce/papers, Volume 9, Issue 6, Page 862-870, October 2026.
Abstract This study investigates the carbonation resistance of very low‐clinker binders containing 35–45 wt.% clinker, limestone, and either calcined clay or natural pozzolan. Mortar prisms and selected concrete beams were exposed to accelerated carbonation at 1% CO2 after 28 days of water curing and 14 days of preconditioning at 20 ± 2 °C and 65 ± 5 ...
Reza Homayoonmehr, Fabien Georget, Elsa Qoku, Maciej Zajac, Anya Vollpracht, Thomas Matschei   +5 more
wiley   +1 more source

Characterization and Reactivity of Natural Pozzolans from Guatemala

Applied Sciences, 2022
The possibility of using pozzolanic materials as a partial substitute for Portland cement (PC) to develop mortars and concretes promotes environmental and economic benefits. The present paper includes an in-depth investigation into the characterization of natural pozzolans from Guatemala for the valorization of these materials.
Oscar M. Sierra, Jordi Payá, José Monzó, María V. Borrachero, Lourdes Soriano, Javier Quiñonez   +5 more
openaire   +3 more sources

An Exploration of Mechanochemical Activation on Various Potential Supplementary Cementitious Materials

Journal of the American Ceramic Society, Volume 109, Issue 9, September 2026.
ABSTRACT The use of supplementary cementitious materials (SCMs) is a major way to reduce the carbon footprint of concrete. Mechanochemical activation (MCA) can be used to activate inert materials that can then be used as SCMs. In this study, the effect of MCA using a planetary ball mill was investigated for 16 materials, ranging from natural occurring ...
Sofiane Amroun, Prannoy Suraneni
wiley   +1 more source

Synergistic Effects of Silica and Calcium‐Based Dual Admixtures on the Flowability, Microstructure, and Strength Development in Low‐Carbon Concrete

Applied Research, Volume 5, Issue 4, August 2026.
ABSTRACT Eco‐friendly construction practices have emerged as a cornerstone of modern development. Due to the substantial carbon emissions from cement production, there is a growing demand for supplementary cementitious materials. This study investigated the synergistic effects of two different wastes, silica‐rich rice husk ash (RHA) and calcium‐rich ...
Md. Soybur Rahman, Zakaria Hossain
wiley   +1 more source

Experimental Investigation of Energy Consumption and CO2 Emission in Cement Kiln in Effect of Replacement Natural Pozzolan by Method of Grinding Clinker and Pozzolan Separately [PDF]

Iranian Journal of Chemistry & Chemical Engineering
In this research, natural pozzolanic materials were used in cement production to reduce the emission of CO2 and energy consumption. The rate of substitution of cement with natural pozzolan powder varied from 20% to 50% in 100 samples.
Somayeh Mansouri, Farhad Shahraki, Jafar Sadeghi, Esmaeil Koohestanian, Mohammad Reza Sardashti Birjandi   +4 more
doaj   +1 more source

The Effect of Volcanic ash Pozzolan and Metakaolin on Electrochemical Corrosion Resistance of 2304 Duplex Stainless Steel Reinforcing in Concrete Subjected to Marine Environment

International Journal of Electrochemical Science, 2022
The corrosion behavior of 2304 duplex stainless steel reinforcing in concrete structures containing natural basaltic volcanic ash pozzolan and metakaolin as partially replacing materials for Portland cement (PC) in 3.5wt% NaCl solution as a marine ...
Wang Yujie, Zhou Huiwen, Fu Xu
doaj   +1 more source

Impact of Na and K Activators on Properties of Class F and C Fly Ash‐Based Geopolymers

Journal of the American Ceramic Society, Volume 109, Issue 7, July 2026.
This study evaluates the comparative impacts of sodium (Na) and potassium (K) activators on the mechanical properties and microstructural development of Class F and Class C fly ash‐based geopolymers. ABSTRACT This study investigates the mechanical and microstructural evolution of geopolymers synthesized from Class F and Class C fly ash using two ...
Mehrzad Mohabbi
wiley   +1 more source

Co‐Calcination of Silicate or Aluminosilicate Network of Clay and Non‐Clay Minerals With NaOH: Physicochemical Insights

Journal of the American Ceramic Society, Volume 109, Issue 6, June 2026.
Effects of co‐calcination with alkali hydroxide on pure clay minerals (kaolinite, montmorillonite) and typical impure minerals (quartz, feldspar) are presented. Co‐calcining montmorillonite and quartz with sodium hydroxide improves their reactivity. Co‐calcining kaolinite with sodium hydroxide reduces its reactivity.
Ishrat Baki Borno, Farzana Mustari Nishat, Maria C. G. Juenger, Warda Ashraf   +3 more
wiley   +1 more source

Alkali-Activated Natural Pozzolan/Slag Binder for Sustainable Concrete [PDF]

, 2016
This study aimed to fully replace Portland cement (PC) with environmentally friendly binders capable of improving longevity of concrete. The new binders consisted of different proportions of natural Pozzolan and slag which were alkaline-activated with ...
Najimi, Meysam
core   +1 more source