Carbon Peaking and Carbon Neutrality in the Cement-Based Materials

Wang, Xiaoyong; Wang, Xiao-Yong

doi:10.3390/ma16134705

Cited by 2 publications

(1 citation statement)

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“…Zhang and Wang [6] proposed to develop a multifaceted approach to reach carbon peaking in the cement industry, i.e., to achieve the point at which carbon dioxide emissions from the cement industry attain the highest level and then subsequently drop. Furthermore, the idea that the global cement industry has a huge potential to bring about changes to minimize global warming was supported.…”

Section: Introductionmentioning

confidence: 99%

Carbon Dioxide Uptake by Brazilian Cement-Based Materials

da Silva Rego,

Sanjuán,

Mora

et al. 2023

Applied Sciences

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The worldwide cement industry plays an important role in addressing the climate change challenge. Brazil’s cement industry currently has 91 cement plants with an installed production capacity of 94 million tons per year and has started to calculate the net CO2 emissions to achieve a carbon-neutral cement sector by 2050. Accordingly, the carbon dioxide uptake due to mortar and concrete carbonation is subtracted from the carbon dioxide emitted by the chemical reaction for the calcination of lime, i.e., the calcination process performed during clinker production. Now-adays, the Intergovernmental Panel on Climate Change (IPCC) Guidelines for National Greenhouse Gas (GHG) Inventories to report the GHG emissions do not include any calculation procedure to consider the mortar and concrete carbonation. However, the Intergovernmental Panel on Climate Change (IPCC)’s Sixth Assessment Report (AR6) recognizes the physico-chemical process known as carbonation. Brazilian net carbon dioxide emissions of cements produced from 1990 to 2019 are estimated considering the carbon dioxide uptake during the service-life and end-of-life and secondary usage stages (Tier 1). This is a fundamental scientific and technological novelty that changes the current approach to estimate the carbon dioxide emissions due to the Portland cement clinker production. Even considering the relative novelty of this approach, it should be promoted in the future and included in the national inventory report (NIR). The carbon dioxide uptake by mortar and concrete carbonation for 30 years is about 140 million tons. Within this thirty-year period about 483 million tons have been released due to the calcination process.

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Section: Introductionmentioning

confidence: 99%