Carbon dioxide upcycling into industrially produced concrete blocks

Monkman, Sean; MacDonald, Mark

doi:10.1016/j.conbuildmat.2016.07.046

Cited by 73 publications

(27 citation statements)

References 6 publications

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“…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

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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.

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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

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“…The process of cement production is highly energy-demanding with accompanying high environmental impact. Global cement production is the third-largest source of anthropogenic emissions of CO 2 after fossil fuels and land-use change [3] with approximate 5 -8 % estimation of the total CO 2 emissions [4][5][6][7]. Taking into consideration that global cement production has increased more than 30 times since 1950, estimated global emissions of CO 2 were 1.5 ± 0.12 Gt in 2018, cumulative global emissions were of 38.3 ± 2.4 Gt CO 2 between 1928 and 2018, 71% of which have occurred since 1990 [3], it exists a legitimate demand on the use of alternative binders with significantly decreased influence on the environment or the use of recycled cementitious materials utilized in new concrete mixes.…”

Section: Introductionmentioning

confidence: 99%

Basic Physical, Mechanical, Thermal and Hygric Properties of Concrete with Coarse Aggregates Fabricated from Recycled Concrete Pavements

et al. 2020

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Concrete production unfavourably affects the environment due to high energy demands of cement production and consumption of limited natural resources. Therefore, waste utilization in fabrication of cementitious material is beneficial and legitimate. Significant reduction of environmental impact can be secured by utilization of various types of wastes or byproducts used for a partial substitution of cement binder or aggregates. However, the use of waste materials usually leads to deterioration of material properties of the designed composites. Therefore, it is very important to thoroughly investigate important materials properties to verify performance and practical usability of the newly designed materials. In this paper, three types of concrete mixes were designed. The reference concrete involved fine and coarse natural riverbed aggregates and two other mixes were designed using both, natural and recycled aggregates represented by crushed concrete paving cobbles. Concretes were tested in terms of basic physical properties (bulk density), mechanical properties (compressive strength), thermal properties (thermal conductivity, specific heat capacity, thermal diffusivity), and hygric properties (water vapour diffusion resistance factor, water vapour sorption at 97% RH, water absorption coefficient, moisture diffusivity) and experimentally determined data were compared and discussed. It was observed that materials properties of concretes with recycled aggregates are comparable with those of the reference concrete which is a promising fact from the environmental point of view.

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“…Another area of active research includes so-called 'CO 2 utilization' in concrete where concrete is formulated with added CO 2 either in its constituents before casting, during batching and mixing, or in finished products. Three main CO 2 utilization strategies in concrete formulation can be found in the literature as shown in figure 1, including carbonation curing [35][36][37], carbonation during mixing [38][39][40][41], and carbonation with recycled concrete aggregate (RCA) [42]. Thus far, the majority of studies on CO 2 utilization in concrete exclusively explored mitigation opportunities through sequestration using carbonation curing [8,[43][44][45][46][47].…”

Section: Introductionmentioning

confidence: 99%

Mitigating CO₂ emissions of concrete manufacturing through CO₂-enabled binder reduction

Lim

Ellis

Skerlos

2019

Environ. Res. Lett.

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Past studies on CO 2 utilization in the concrete industry have primarily focused on maximizing sequestered CO 2 , while focusing less on CO 2 avoidance possible by reducing binder use through the addition of CO 2 to concrete formulations. In this paper, we study the net CO 2 reduction and cost benefits achievable by reducing binder loading while adding CO 2 via three approaches: carbonation during curing, carbonation during mixing, or carbonation with recycled concrete aggregate. These techniques are evaluated for a cohort of concrete formulations representing the diverse mixture designs found in the US ready-mixed and precast industries. Each formulation is optimized for reduced binder loading where the use of CO 2 directly in the formulation recovers the lost compressive strength from reduced binder. We show that over an order of magnitude more CO 2 can be avoided when binder reduction is jointly implemented with CO 2 utilization compared to utilizing CO 2 alone. As a result, nearly 40% of the annual CO 2 emissions from the US concrete industry could, in principle, be eliminated without relying on novel supplemental materials, alternative binder, or carbon capture and sequestration. The recently amended 45Q tax credit will not incentivize this strategy, as it only considers carbon sequestration. However, we find that the saved material cost from reduced binder use on its own may provide a significant economic incentive to promote the joint strategy in practice. We conclude that the real value of CO 2 utilization in concrete hinges on exploiting CO 2 -induced property changes to yield additional emission reduction, not by maximizing absorbed CO 2 .

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Carbon dioxide upcycling into industrially produced concrete blocks

Cited by 73 publications

References 6 publications

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

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

Basic Physical, Mechanical, Thermal and Hygric Properties of Concrete with Coarse Aggregates Fabricated from Recycled Concrete Pavements

Mitigating CO₂ emissions of concrete manufacturing through CO₂-enabled binder reduction

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Carbon dioxide upcycling into industrially produced concrete blocks

Cited by 73 publications

References 6 publications

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

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

Basic Physical, Mechanical, Thermal and Hygric Properties of Concrete with Coarse Aggregates Fabricated from Recycled Concrete Pavements

Mitigating CO2 emissions of concrete manufacturing through CO2-enabled binder reduction

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Mitigating CO₂ emissions of concrete manufacturing through CO₂-enabled binder reduction