Life-cycle assessment of emerging CO2 mineral carbonation-cured concrete blocks: Comparative analysis of CO2 reduction potential and optimization of environmental impacts

Huang, Hao; Wang, Tao; Kolosz, Ben; Andrésen, John M.; García, Susana; Fang, Mengxiang; Maroto‐Valer, M. Mercedes

doi:10.1016/j.jclepro.2019.118359

Cited by 78 publications

(23 citation statements)

References 27 publications

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“…The strengths attained for brick in this study, i.e., 7.8-20.0 N/mm 2 , are in line with other cement-based products partially made of waste materials such as fly ash (6.75 N/mm 2 ) [ In terms of CO 2 sequestration performance, the findings are also comparable with some other studies, such as the improvement in material strength after carbonation, e.g., with 2-18 h carbonation time [45], 4 h carbonation [46] and 1-14 d carbonation curing [44,83]. Application-wise, various cement-based products have been studied as potential CO 2 sink for carbon capture and storage, e.g., concrete [44,83], cement-bonded fibreboards [45], cement boards [12], concrete blocks [42,84] and cement mortar [84]. It has been found from the previous studies that the CO 2 uptake of the carbonated products were 2-3.5% (concrete) [85], 9.8-14.1% (concrete) [44], 20% (cement fibreboards) [45], 9.4-13.9% (cement mortar) [46], 24% (concrete blocks/bricks) [42], while it was between 0.4 and 1.3% in this study (cement-sand bricks fabricated with carbonation curing at ambient pressure and temperature).…”

Section: Carbon Capture and Storage In Cementitious Productsupporting

confidence: 84%

Characterization of Gold Mining Waste for Carbon Sequestration and Utilization as Supplementary Cementitious Material

et al. 2021

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This study aims to identify the potential of gold mining waste for CO2 sequestration and its utilization for carbon storage in cementitious material. Samples of mine waste were identified from a gold mine for mineralogical and chemical composition analysis using X-ray diffractogram and scanning electron microscopy with energy-dispersive X-ray. Mine waste was utilized in a brick-making process as supplementary cementitious material and as an agent for CO2 capture and storage in bricks. Carbonation curing was incorporated in brick fabrication to estimate CO2 uptake of the brick product. Results indicated that the mine wastes were composed of silicate minerals essential for mineral carbonation such as muscovite and illite (major) and chlorite-serpentine, aerinite, albite and stilpnomelane (moderate/minor phases). The mine wastes were identified as belonging to the highly pozzolanic category, which has a great role in improving the strength properties of brick products. Carbonated minerals served as an additional binder that increased the strength of the product. CO2 uptake of the product was between 0.24% and 0.57% for bricks containing 40–60% of gold mine waste, corresponding to 7.2–17.1 g CO2/brick. Greater performance in terms of compressive strength and water adsorption was observed for bricks with 3 h carbonation curing. The carbonation product was evidenced by strong peaks of calcite and reduced peaks for calcium hydroxide from XRD analysis and was supported by a densified and crystalline microstructure of materials. It has been demonstrated that gold mine waste is a potential feedstock for mineral carbonation, and its utilization for permanent carbon storage in brick making is in line with the concept of CCUS for environmental sustainability.

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Section: Carbon Capture and Storage In Cementitious Productsupporting

confidence: 84%

Characterization of Gold Mining Waste for Carbon Sequestration and Utilization as Supplementary Cementitious Material

et al. 2021

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“…A significant reserve of raw materials in the production of building materials and products hardening due to carbon dioxide are various wastes and industrial waste products, which at certain technological processing can exhibit bindering properties and enter into chemical interaction with carbon dioxide, forming an artificial stone. As a result of numerous research studies [11][12][13][14][15], a number of kinds of the secondary raw materials possessing the essential potential for CО 2 binding have been revealed, scientific and technological bases for introduction of the received results in the industry have been developed [13][14][15][16], and moreover, pilot batches of the building products hardened in the environment of the raised concentration of CО 2 have been issued [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Intensive Ways of Producing Carbonate Curing Building Materials Based on Lime Secondary Raw Materials

et al. 2020

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The article is dedicated to the research and development of intensive methods for curing products by capturing and binding CO2. It aims to improve and increase the productivity of technologies for the production of artificially carbonated building materials and products. Soda production wastes, limestone dust and finely dispersed limestone dust were used as the research objects. Secondary raw materials have been investigated using modern methods of phase composition and granulometry test. Intensive methods of production of accelerated carbonation of systems consisting of soda wastes were tested using multi-parameter optimization methods. The effects of recycled lime materials on the strength and hydrophysical properties of the obtained material were determined. The secondary raw materials effect depended on the composition of the raw mixture, molding conditions, CO2 concentration applied to the carbonate curing chamber, and the duration of exposure to environments with high CO2 content. It was found that the most effective way of providing accelerated carbonation curing of construction materials and products is a combined carbonation method, combining the principles of dynamic and static methods. It was concluded that the optimal CO2 concentration in the gas-air mixtures used for carbonate curing is 30%–40%.

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“…In addition to storing carbon, the CO 2 -cured building elements may offer reductions of global warming potential (GWP). Huang et al (2019b) conducted a life-cycle assessment of several different concrete blocks that had been cured with CO 2 . Their findings suggest that the GWP of a CO 2 -cured Wollastonite-Portland cement (WPC) block can be approximately 30% lower than in typical steam-cured concrete block made with ordinary Portland cement (OPC).…”

Section: Carbon Captured and Utilized For Co 2 -Cured Concretementioning

confidence: 99%

How can carbon be stored in the built environment? A review of potential options

Kuittinen

Zernicke

Slabik

et al. 2021

Architectural Science Review

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In order to reach carbon neutrality, GHG emissions from all sectors of society need to be strongly reduced. This especially applies to the construction sector. For those emissions that remain hard to reduce, removals or compensations are required. Such approaches can also be found within the built environment, but have not yet been systematically utilized. This paper presents a review of possible carbon storage technologies based on literature and professional experience. The existing technologies for storing carbon can be divided into 13 approaches. Some are already in use, many possess the potential to be scaled up, while some presently seem to only be theoretical. We propose typologies for different approaches, estimate their net carbon storage impact and maturity, and suggest a ranking based on their applicability, impact, and maturity. Our findings suggest that there is an underutilized potential for systematically accumulating atmospheric carbon in the built environment.

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Life-cycle assessment of emerging CO2 mineral carbonation-cured concrete blocks: Comparative analysis of CO2 reduction potential and optimization of environmental impacts

Cited by 78 publications

References 27 publications

Characterization of Gold Mining Waste for Carbon Sequestration and Utilization as Supplementary Cementitious Material

Characterization of Gold Mining Waste for Carbon Sequestration and Utilization as Supplementary Cementitious Material

Intensive Ways of Producing Carbonate Curing Building Materials Based on Lime Secondary Raw Materials

How can carbon be stored in the built environment? A review of potential options

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