Carbonate-bonded construction materials from alkaline residues

Nielsen, Peter; Baciocchi, Renato; Costa, Giulia; Quaghebeur, Mieke; Snellings, Ruben

doi:10.21809/rilemtechlett.2017.50

Cited by 17 publications

(10 citation statements)

References 41 publications

(48 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Salman et al (2014) investigated monolithic products made from argon oxygen decarburization slag with strengths of 34 MPa after 3 weeks curing in 5% CO 2 and 60 MPa at 8 bar CO 2 and 80 • C for 15 min. Similar results for stainless steel slag were reported by Quaghebeur et al (2010) and Nielsen et al (2017). Example CCUS processes delivering construction materials that are under development or commercially available are given in Table 3, together with their reported technical readiness level.…”

Section: Carbon Dioxide Mineralization In the Construction Industrysupporting

confidence: 78%

Mineralization Technology for Carbon Capture, Utilization, and Storage

2020

View full text Add to dashboard Cite

Carbon capture, utilization, and storage (CCUS) is a technology approach to the management of anthropogenic carbon dioxide gas emissions to the atmosphere. By injecting CO 2 into host rocks, or by employing a an ex situ application step, geological formations can react with and store huge volumes of CO 2 as carbonate minerals. An alternative mineral feedstock material is the Gt of industrial process wastes that are often disposed to landfill. By applying an accelerated carbonation step to solid waste, there is potential to sequestrate meaningful quantities of CO 2 in carbonate-cemented products that have reuse potential. The manufacture of carbonated aggregates is commercially established in Europe, and recent advances in technology include a mobile plant that directly utilizes flue-gas derived CO 2 in the mineralisation process. The present work discusses the basis for mineralization in geologically derived minerals and industrial wastes, with a focus being on the manufacture of products with value. An assessment of mineralized construction aggregates suggests that carbon capture, utilization, and storage technology can manage significant quantities of this CO 2 .

show abstract

Section: Carbon Dioxide Mineralization In the Construction Industrysupporting

confidence: 78%

Mineralization Technology for Carbon Capture, Utilization, and Storage

2020

View full text Add to dashboard Cite

show abstract

“…Another example of active chemical intervention is the use of carbon dioxide for the accelerated curing of cementitious materials, often in combination with the application of a higher temperature. This active chemical intervention has already been reported by Klemm and Berger [ 16 ], but has been given renewed attention in recent years because of environmental issues, as illustrated by Monkman and MacDonald [ 17 ], studying the addition of carbon dioxide gas during mixing of the concrete for the production of blocks, and by Nielsen et al [ 18 ], studying carbonate-bonded construction materials from alkaline residues.…”

Section: Current Practices With Active Intervention To Control Concrementioning

confidence: 99%

Active control of properties of concrete: a (p)review

Schutter

Lesage

2018

Mater Struct

View full text Add to dashboard Cite

Concrete properties to a large extent depend on mix design and processing, currently leaving only limited options to actively modify concrete properties during or after casting. This paper gives a (p)review on a more advanced active control of properties of concrete, based on the application of external signals to trigger an intended response in the material, either in fresh or hardened state. Current practices in concrete industry that could be considered as active control are briefly summarized. More advanced active control mechanisms as studied in other fields, e.g. based on hydrogels and other functional polymers, are reviewed and some principles are listed. A specific focus is further given on potential methods for active rheology control. Based on the concepts developed in other fields, substantial progress could be made in order to achieve active control of fresh and hardened concrete properties. However, several challenges remain, like the stability and functioning of the responsive material in a cementitious environment, the applicability of the control signal in a cementitious material, and the economy, logistics and safety of a control system on a construction site or in precast industry. Finding solutions to these challenges will lead to marvelous opportunities in general, and for 3D and even 4D printing more particularly.

show abstract

“…Inorganic alkaline materials that promote CO 2 mineralization ( carbonation ) are envisioned as a greener alternative for portland cement (PC) for the production of concrete 1‐7 (N.B. : the production of PC accounts for 9% of global CO 2 emissions) 8,9 .…”

Section: Introductionmentioning

confidence: 99%

New insights into the mechanisms of carbon dioxide mineralization by portlandite

et al. 2021

View full text Add to dashboard Cite

Portlandite (Ca(OH)2; also known as calcium hydroxide or hydrated lime), an archetypal alkaline solid, interacts with carbon dioxide (CO2) via a classic acid–base “carbonation” reaction to produce a salt (calcium carbonate: CaCO3) that functions as a low‐carbon cementation agent, and water. Herein, we revisit the effects of reaction temperature, relative humidity (RH), and CO2 concentration on the carbonation of portlandite in the form of finely divided particulates and compacted monoliths. Special focus is paid to uncover the influences of the moisture state (i.e., the presence of adsorbed and/or liquid water), moisture content and the surface area‐to‐volume ratio (sa/v, mm−1) of reactants on the extent of carbonation. In general, increasing RH more significantly impacts the rate and thermodynamics of carbonation reactions, leading to high(er) conversion regardless of prior exposure history. This mitigated the effects (if any) of allegedly denser, less porous carbonate surface layers formed at lower RH. In monolithic compacts, microstructural (i.e., mass‐transfer) constraints particularly hindered the progress of carbonation due to pore blocking by liquid water in compacts with limited surface area to volume ratios. These mechanistic insights into portlandite's carbonation inform processing routes for the production of cementation agents that seek to utilize CO2 borne in dilute (≤30 mol%) post‐combustion flue gas streams.

show abstract

Carbonate-bonded construction materials from alkaline residues

Cited by 17 publications

References 41 publications

Mineralization Technology for Carbon Capture, Utilization, and Storage

Mineralization Technology for Carbon Capture, Utilization, and Storage

Active control of properties of concrete: a (p)review

New insights into the mechanisms of carbon dioxide mineralization by portlandite

Contact Info

Product

Resources

About