Review on Geopolymers as Wellbore Sealants: State of the Art Optimization for CO2 Exposure and Perspectives

SH Hajiabadi, M Khalifeh, R Van Noort… - Acs Omega, 2023 - ACS Publications
Wellbores used in underground production and storage activities, including carbon capture
and storage (CCS), are typically sealed using sealants based on Ordinary Portland Cement …

Novel synergy of Si-rich minerals and reactive MgO for stabilisation/solidification of contaminated sediment

L Wang, L Chen, DW Cho, DCW Tsang, J Yang… - Journal of hazardous …, 2019 - Elsevier
Disposal of significant amounts of dredged contaminated sediment poses an economic and
environmental problem worldwide. Transforming contaminated sediment into value-added …

Effect of Na2O concentration and water/binder ratio on carbonation of alkali-activated slag/fly ash cements

J Zhang, C Shi, Z Zhang - Construction and Building Materials, 2021 - Elsevier
In this study, the effects of Na 2 O concentration and water/binder (w/b) ratio on the phase
evolution and carbonation of alkali-activated slag/fly ash cements are studied. After sealed …

Effect of elevated temperature on mechanical properties of high-volume fly ash-based geopolymer concrete, mortar and paste cured at room temperature

J Zhao, K Wang, S Wang, Z Wang, Z Yang… - Polymers, 2021 - mdpi.com
This paper presents results from experimental work on mechanical properties of geopolymer
concrete, mortar and paste prepared using fly ash and blended slag. Compressive strength …

Carbonation induced phase evolution in alkali-activated slag/fly ash cements: The effect of silicate modulus of activators

J Zhang, C Shi, Z Zhang - Construction and Building Materials, 2019 - Elsevier
In this study, the effects of silicate modulus of activators (Ms) on carbonation of alkali-
activated slag/fly ash cements are studied and compared between natural (0.03–0.04% CO …

Hydration properties of alkali-activated fly ash/slag binders modified by MgO with different reactivity

Z Wang, S Park, HR Khalid, HK Lee - Journal of Building Engineering, 2021 - Elsevier
The roles of MgO in alkali-activated materials have attracted much attention in recent
decades. The effects of the reactivity of MgO on the compressive strengths and hydration …

[HTML][HTML] Effects of mix composition on the mechanical, physical and durability properties of alkali-activated calcined clay/slag concrete cured under ambient condition

SDC Gomes, QD Nguyen, W Li, A Castel - Construction and Building …, 2024 - Elsevier
Abstract Alkali-activated concrete (AAC), a possible alternative to ordinary Portland cement
(OPC), provides increased environmental advantages, notably lower carbon emissions …

Accelerated carbonation of alkali-activated blended blast furnace slag and wood fly ash: carbon capture kinetics, chemical and mechanical evolutions

SS Narani, S Siddiqua - Construction and Building Materials, 2024 - Elsevier
The influence of fly ash/slag ratio, alkaline activator silica modulus (Ms), and curing method
have been evaluated on the carbonation of biomass fly ash and blast furnace slag blends. In …

[HTML][HTML] Study on carbonation resistance and chloride ion distribution after carbonation of alkali-activated raw sea sand slag mortar

W Wu, S Kang, X Wang, H Liu - Case Studies in Construction Materials, 2023 - Elsevier
Driven by the scarcity of river sand and accompanying environmental concerns, sea sand is
emerging as an alternative material. However, the durability of construction products can be …

Hydration, carbonation and strength development of reactive MgO cement blended with lime (CaO) under different curing conditions

Z Li, Y Hua, Z Chang, Y Yue, J Qin, J Qian - Journal of Building …, 2023 - Elsevier
This paper investigated the effect of lime added as substitution (by up to 30 wt%) of
magnesia on the performance, phase composition and CO 2 sequestration capacity of …