Towards carbon neutrality: A study on China's long-term low-carbon transition pathways and strategies

He, Jinliang; Lv, Zheng; Zhang, Xiliang; Wang, Hailin; Dong, Weixin; Wang, Jianxiao; Chang, Shiyan; Ou, Xunmin; Guo, Siyue; Zhiyu, Tian; Gu, Aiqin; Teng, Fei; Hu, Bin; Yang, Xin; Chen, Siyuan; Yao, Minghai; Yuan, Zhenhong; Zhou, Li; Zhao, Xiaofan; Li, Ying; Zhang, Dan‐Wei

doi:10.1016/j.ese.2021.100134

Cited by 158 publications

(49 citation statements)

References 8 publications

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“…This concurs with Abram's law [5]. In summary, the CO 2 emissions, compressive strength, and water-binder ratio of the optimized concrete design results are in line with those of the actual project [28], which proves the effectiveness of the proposed method.…”

Section: Case 1: Mixture Designs Without Considering Carbonation Dura...supporting

confidence: 84%

Optimal Design of Low-Carbon Concrete Containing Fly Ash and Limestone Powder

Wang¹

2022

Ceramics - Silikaty

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Fly ash and limestone powder are common admixtures in environmentally friendly concrete production. This paper proposes an optimal design method for low-carbon concrete containing fly ash and limestone powder. This design method considers the influence of strength (30, 40, and 50 MPa) and carbonization service life (50 and 100 years). The genetic algorithm was utilized to determine the optimal global solution, which satisfies different constraints and can find the decisive factor of the concrete mixture design. The analytical results are as follows: When the carbonization service life is 50 years, for ordinary-strength concrete (30 MPa), carbonation durability is the decisive factor in the mixture design, while for medium-(40 MPa) and high-strength (50 MPa) concrete, strength is the decisive factor. When the carbonation service life is 100 years, for ordinary-(30 MPa) and medium-strength (40 MPa) concrete, carbonation durability is the decisive factor for the mixture design, while for high-strength (50 MPa) concrete, compressive strength is the decisive factor. Furthermore, the CO2 emissions, compressive strength, and water-binder ratio of the optimized concrete design results are in line with the actual project, which proves the effectiveness of the proposed method.

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Section: Case 1: Mixture Designs Without Considering Carbonation Dura...supporting

confidence: 84%

Optimal Design of Low-Carbon Concrete Containing Fly Ash and Limestone Powder

Wang¹

2022

Ceramics - Silikaty

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“…Furthermore, it will cause some disadvantages in the modern construction industry, especially in developing countries with a lack of resources and high cost constraints. Furthermore, the world has placed higher requirements on carbon emissions, with China committing to achieve carbon compliance by 2030 and carbon neutrality by 2060 [ 15 ]. As commonly known, the production of cement is said to account for about 7% of total carbon emissions [ 16 , 17 ]; hence, resource shortages and environmental requirements induce an urgent need for alternative methods to prepare UHPC with a low environmental footprint.…”

Section: Introductionmentioning

confidence: 99%

Effect of Curing Regime on the Mechanical Strength, Hydration, and Microstructure of Ecological Ultrahigh-Performance Concrete (EUHPC)

Zuo

Zhang

et al. 2022

Materials

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This paper investigates the effect of curing regimes (standard and steam curing) on the mechanical strength, hydration, and microstructure of ecological ultrahigh-performance concrete (EUHPC). The flowability, compressive strength, flexural strength, hydration, porosity, pore size distribution, and microstructure of UHPC with different contents of supplementary materials (silica fume, fly ash, and ground granulated blast furnace slag) were assessed. The test results showed that the compressive strength of EUHPC under steam curing was increased considerably compared to that under standard curing, while the flexural strength was mildly decreased. The steam curing could decrease the porosity of EUHPC, which ranged between 7% and 9% for standard curing, and between 3.5% and 5% for steam curing. The aperture of EUHPC was below 20 nm, mainly located in the range of 10 nm to 20 nm under standard curing, while it was less than 10 nm for steam curing. C–S–H gel was produced under steam curing, while unhydrated fly ash, mineral powder, and Ca(OH)2 crystal were observed in the amorphous C–S–H gel. The microstructure of EUHPC under steam curing was denser than that under standard curing, and the interfacial transition zones under both curing regimes were compact.

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“…We focus specifically on the land ecosystems in YRD, where vegetation cover is high and O 3 level was increasing fast in recent years. Emission controls include stringent 50% reductions in anthropogenic emissions from five sectors and different regions, a decreasing ratio likely achieved by the 2060s with the national carbon neutrality target (Tong et al 2020, Lamboll et al 2021, He et al 2022. Surface O 3 is predicted by the chemical transport model under different emission controls, and is then used to influence carbon cycle in the vegetation model.…”

Section: Introductionmentioning

confidence: 99%

Mitigating ozone damage to ecosystem productivity through sectoral and regional emission controls: a case study in the Yangtze River Delta, China

Lei

Yue

Wang

et al. 2022

Environ. Res. Lett.

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The land ecosystems of China are estimated to provide an important sink for the increased atmospheric carbon dioxide (CO2), but are undermined by severe ozone (O3) pollution. Mitigation of O3 damage to ecosystems remains a challenge considering that O3 precursors are emitted from a wide range of anthropogenic sectors and O3 formations are also affected by regional transport. Here, we combine chemical transport and dynamic vegetation models to quantify the benefits of sectoral and regional emission controls for the recovery of gross primary productivity (GPP) in the Yangtze River Delta (YRD). For sectoral emission controls, the largest mitigation of O3 damage to GPP in YRD by 3.1±0.4 Gg[C]/day and 2.2±0.2 Gg[C]/day with 50% reductions in the emissions from industry and transportation sectors, respectively. For regional emission controls, reducing 50% anthropogenic emissions outside YRD can mitigate GPP losses by 18.6±3.5 Gg[C]/day, larger than the recovery of 10.1±1.6 Gg[C]/day by the 50% reductions of anthropogenic emissions within YRD. Moreover, summer months, especially July are the best period for GPP recovery from anthropogenic emission controls. Our results highlight the importance of sectoral and regional emission controls to mitigate O3 damage to ecosystem productivities in YRD.

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Towards carbon neutrality: A study on China's long-term low-carbon transition pathways and strategies

Cited by 158 publications

References 8 publications

Optimal Design of Low-Carbon Concrete Containing Fly Ash and Limestone Powder

Optimal Design of Low-Carbon Concrete Containing Fly Ash and Limestone Powder

Effect of Curing Regime on the Mechanical Strength, Hydration, and Microstructure of Ecological Ultrahigh-Performance Concrete (EUHPC)

Mitigating ozone damage to ecosystem productivity through sectoral and regional emission controls: a case study in the Yangtze River Delta, China

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