Internal Curing Effects of Slag on Properties and Microstructure of Ambient-Cured Fly Ash-Based Geopolymer Mortar DOI Creative Commons
Xiaoqiang Li, Yong Zhang, Hongen Zhang

и другие.

Buildings, Год журнала: 2024, Номер 14(12), С. 3846 - 3846

Опубликована: Ноя. 30, 2024

The preparation of ambient-cured fly ash-based geopolymer mortar (FAGM) with high strength by utilizing the chemical reactivity slag is key to realizing sustainable and efficient application solid waste resources. This paper investigates influence different type S95 contents (0%, 5%, 10%, 15%, 20%, 25%, 30%) on fluidity, setting time, mechanical properties FAGM at ambient temperature. direct method first adapted monitor geopolymerization. results indicate that has a minimal effect fluidity mortar, while time decreases compressive increases higher content. For 30% content, reduced from 3160 min 140 min, decrease 95.6%, 3-day 28-day increase 1.5 MPa 34.7 33.5 73.4 MPa, enhancements 2170.2% 110.3%, respectively. Slag also exerts an internal curing effect, raising temperature accelerating geopolymerization process ash, thereby improving compactness reducing its porosity. approach successfully enables production high-strength, FAGM.

Язык: Английский

Land Use and Carbon Storage Evolution Under Multiple Scenarios: A Spatiotemporal Analysis of Beijing Using the PLUS-InVEST Model DOI Open Access

Jiaqi Kang,

Linlin Zhang, Qingyan Meng

и другие.

Sustainability, Год журнала: 2025, Номер 17(4), С. 1589 - 1589

Опубликована: Фев. 14, 2025

The carbon stock in terrestrial ecosystems is closely linked to changes land use. Understanding how use alterations affect regional stocks essential for maintaining the balance of ecosystems. This research leverages and driving factor data spanning from 2000 2020, utilizing Patch-generating Land Use Simulation (PLUS) model alongside InVEST ecosystem services examine temporal spatial storage across Beijing. Additionally, four future scenes 2030—urban development, natural cropland protection, as well eco-protection—are explored, with PLUS models employed emulate dynamic corresponding variations. results show that following: (1) Between resulted a significant decline storage, total reduction 1.04 × 107 tons. (2) From agricultural, forest, grassland areas Beijing all declined varying extents, while built-up expanded by 1292.04 km2 (7.88%), minimal observed water bodies or barren lands. (3) Compared distribution 2030 urban development scenario decreased 6.99 106 tons, highlighting impact rapid urbanization expansion on storage. (4) In ecological protection scenario, optimization structure an increase 6.01 105 tons indicating allocation this contributes restoration enhances sink capacity ecosystem. study provides valuable insights policymakers optimizing perspective offers guidance achievement “dual carbon” strategic objectives.

Язык: Английский

Процитировано

2

Scenario forecasting of carbon neutrality by combining the LEAP model and future land-use simulation: An empirical study of Shenzhen, China DOI
Xinyan Zhao, Zhiguo Rao, Jinyao Lin

и другие.

Sustainable Cities and Society, Год журнала: 2025, Номер unknown, С. 106367 - 106367

Опубликована: Апрель 1, 2025

Язык: Английский

Процитировано

0

Monitoring desertification in Ordos City using integrated vegetation and soil indicators DOI
Jinting Zhang, Lu Hu, Kui Yang

и другие.

Journal of Arid Environments, Год журнала: 2025, Номер 229, С. 105391 - 105391

Опубликована: Апрель 23, 2025

Язык: Английский

Процитировано

0

A Study on the Spatiotemporal Coupling Characteristics and Driving Factors of China’s Green Finance and Energy Efficiency DOI Creative Commons

Hong Wu,

Xuewei Wen,

Wang Xi-feng

и другие.

Systems, Год журнала: 2025, Номер 13(5), С. 394 - 394

Опубликована: Май 20, 2025

In the context of global efforts to address climate change and pursue sustainable development, green finance (GF) energy efficiency (EE) have become key issues focus for academics policymakers. This study explores spatiotemporal coupling characteristics driving factors China’s from 2011 2022, aiming help China achieve its dual carbon goals. used a three-dimensional framework assess 30 provinces, considering factor inputs, expected outputs, undesirable outputs. The employed benchmark super-efficiency EBM model, entropy method, coordination model (CCD), Dagum Gini coefficient decomposition, geographic weighted regression (GTWR). Key findings include “high in east, low west” gradient distribution both efficiency, expanding regional disparities, strong synergistic effect between technological innovation regulation. Based on findings, this paper proposes three-tier governance framework: adaptation, digital integration, institutional compensation. contributes deeper understanding theory environmental financial systems provides empirical support optimizing neutrality pathways.

Язык: Английский

Процитировано

0

Internal Curing Effects of Slag on Properties and Microstructure of Ambient-Cured Fly Ash-Based Geopolymer Mortar DOI Creative Commons
Xiaoqiang Li, Yong Zhang, Hongen Zhang

и другие.

Buildings, Год журнала: 2024, Номер 14(12), С. 3846 - 3846

Опубликована: Ноя. 30, 2024

The preparation of ambient-cured fly ash-based geopolymer mortar (FAGM) with high strength by utilizing the chemical reactivity slag is key to realizing sustainable and efficient application solid waste resources. This paper investigates influence different type S95 contents (0%, 5%, 10%, 15%, 20%, 25%, 30%) on fluidity, setting time, mechanical properties FAGM at ambient temperature. direct method first adapted monitor geopolymerization. results indicate that has a minimal effect fluidity mortar, while time decreases compressive increases higher content. For 30% content, reduced from 3160 min 140 min, decrease 95.6%, 3-day 28-day increase 1.5 MPa 34.7 33.5 73.4 MPa, enhancements 2170.2% 110.3%, respectively. Slag also exerts an internal curing effect, raising temperature accelerating geopolymerization process ash, thereby improving compactness reducing its porosity. approach successfully enables production high-strength, FAGM.

Язык: Английский

Процитировано

2