Advances in alkali-activation of clay minerals

AZ Khalifa, Ö Cizer, Y Pontikes, A Heath… - Cement and Concrete …, 2020 - Elsevier
To future-proof alkali-activation technology, there is a need to look beyond well-established
precursors such as fly ash and blast furnace slag, due to resource competition, geographical …

Calcium hydroxide in geopolymers–a critical overview

AM Rashad - European Journal of Environmental and Civil …, 2024 - Taylor & Francis
As known, calcium hydroxide Ca (OH) 2 is a basic material, that can be used in numerous
applications. Recently, many trials have been performed to modify some properties of alkali …

Alkali activation of blast furnace slag using a carbonate-calcium carbide residue alkaline mixture to prepare cemented paste backfill

X Sun, J Liu, J Qiu, P Wu, Y Zhao - Construction and Building Materials, 2022 - Elsevier
The utilization of calcium carbide residue (CCR) as alkali activator is promising to reduce
production cost and ensure production safety. In this study, CCR/carbonates system and Ca …

Alkali-activated materials produced using high-calcium, high-carbon biomass ash

TH Silva, LFS Lara, GJB Silva, JL Provis… - Cement and Concrete …, 2022 - Elsevier
Eucalyptus ash (EA) was used in this study as a high calcium ash (HCA) precursor for alkali-
activated binders. The EA used also has high carbon unburned (High loss on ignition). This …

Decarbonisation of calcium carbonate at atmospheric temperatures and pressures, with simultaneous CO 2 capture, through production of sodium carbonate

T Hanein, M Simoni, CL Woo, JL Provis… - Energy & …, 2021 - pubs.rsc.org
The calcination of calcium carbonate (CaCO3) is a major contributor to carbon dioxide
(CO2) emissions that are changing our climate. Moreover, the calcination process requires …

Synthesis of calcined kaolin-based geopolymer foam: Assessment of mechanical properties, thermal insulation, and elevated temperature stability

F Matalkah, A Ababneh, R Aqel - Ceramics International, 2023 - Elsevier
Calcined kaolin-based geopolymer foam was prepared, characterized, and evaluated in this
paper. The different hydrogen peroxide foaming agent dosages were added to the …

[HTML][HTML] Synthesis of kaolin-based alkali-activated cement: carbon footprint, cost and energy assessment

A Ababneh, F Matalkah, R Aqel - Journal of Materials Research and …, 2020 - Elsevier
The main purpose of the work reported herein is to use kaolin to produce one-part alkali-
activated cement. Thermal activation was performed on kaolin in the presence of alkalis …

Using calcium carbide residue to prepare ecological alkali activated slag composites: Effect of anion type

Y Zhao, X Gu, X Xu, Z Zhang - Ceramics International, 2023 - Elsevier
Activator is a critical component of alkali activated materials. In the present work, a by-
product calcium carbide residue is used to prepare mixed alkali activators combined with …

Investigation on mechanical and microstructural properties of alkali-activated materials made of wood biomass ash and glass powder

GJB Silva, VP Santana, M Wójcik - Powder Technology, 2021 - Elsevier
The possibility of the application of biomass fly ash (BFA) as a precursor material for the
synthesis of alkali-activated materials (AAM) is presented in this paper. Glass powder (GP) …

Synthesis of hydroxy-sodalite/cancrinite zeolites from calcite-bearing kaolin for the removal of heavy metal ions in aqueous media

M Esaifan, LN Warr, G Grathoff, T Meyer… - Minerals, 2019 - mdpi.com
A hydroxy-sodalite/cancrinite zeolite composite was synthesized from low-grade calcite-
bearing kaolin by hydrothermal alkali-activation method at 160° C for 6 h. The effect of …