Results 131 to 140 of about 2,593,043 (289)

Comparative study on calculation methods for compressive strength of low strength aggregate concrete

AIP Advances
The compressive strength of concrete with low strength aggregate volume fractions of 10%, 20%, and 30% was calculated using both the graphical analysis method and mesomechanics method.
Xiaohui Wang, Jie Zhang, Wei Liu, Xingzheng Wu, Huiyun Li, Yujie Yan   +5 more
doaj   +1 more source

Supervised Learning Methods for Modeling Concrete Compressive Strength Prediction at High Temperature. [PDF]

Materials (Basel), 2021
Ahmad M, Hu JL, Ahmad F, Tang XW, Amjad M, Iqbal MJ, Asim M, Farooq A.   +7 more
europepmc   +1 more source

Combating ESG Greenwashing Through AI Models: Evidence From Disaggregated AI Technologies, Mechanisms, and Thresholds

Corporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT This study examines how artificial intelligence language models influence corporate environmental, social, and governance greenwashing (GWESG$$ {\mathrm{GW}}_{\mathrm{ESG}} $$) behavior, utilizing panel data from Chinese listed firms spanning 2012–2022.
Brahim Bergougui, Hamid Ghazi H. Sulimany, Abdulrahman Atllah Alharbi   +2 more
wiley   +1 more source

Convergence Clubs in Corporate Sustainability: Identifying Industry and Risk‐Level ESG Convergence Patterns in S&P 500 Firms

Corporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT Despite the growing emphasis on corporate sustainability, it remains unclear whether firms will align with common ESG standards. The Phillips–Sul convergence methodology, in combination with dynamic time‐warping clustering, was utilized to analyze the ESG trajectories of 430 S&P 500 firms from 2019 to 2024.
Abdullah Kürşat Merter, Yavuz Selim Balcıoğlu   +1 more
wiley   +1 more source

Beyond Reputation: A Function for CSR in the Age of Systemic Crises. Evidence From the Italian Business Landscape

Corporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT Corporate Social Responsibility (CSR) and Corporate Sustainability (CS) are historically distinct constructs that have converged to the point of conceptual confusion. This paper operates within the CSR tradition, arguing that authentic CS is structurally impossible without the ethical foundation CSR provides.
Massimo Franchi
wiley   +1 more source

The uniaxial compressive strength of concrete: revisited

Materials and Structures
AbstractThis paper re-examines common notions and conventions regarding the compressive strength of concrete in general and of the uniaxial compressive strength of concrete in particular. A distinction is introduced between the strength of the specimen and the strength of the concrete as a material, and the commonly measured and adopted strength is ...
openaire   +1 more source

Effect of Initial On-Site Curing on 28-Day Cylinder Strength [PDF]

, 2011
The initial curing of concrete specimens for quality assurance is addressed in different ways in testing standards, which often specify requirements that are difficult to meet in practice unless very costly initial curing chambers are available.
Fernández Gómez, Jaime Antonio, Calavera Ruiz, Jose, Ley Urzaiz, Jorge, Moreno González, Emilio Germán, Lopez, Pedro   +4 more
core  

Study on the composite fracture characteristics of filling and reinforcing cracked rock mass after high temperature damage

Deep Underground Science and Engineering, EarlyView.
Cement infill shares compressive and shear stresses during loading, while interfacial friction hinders crack propagation and reduces stress concentration, improving the rock's load‐bearing capacity. Failure modes vary with crack inclination. Unfilled specimens show four modes.
Shihao Yuan, Qiang Sun, Jianjun Hu, Liwei Zhang, Jishi Geng   +4 more
wiley   +1 more source

Experimental Study for Shear Behavior of Hybrid Self-Compacting Concrete Beams

Journal of Engineering and Sustainable Development, 2013
This paper discusses shear behavior of hybrid reinforced concrete beams that consist of two different concrete layers: the tension layer is made of normal strength concrete with compressive strength of 25 MPa and the compression layer is made of self ...
Mohammed Mosleh Salman, Husain Khalaf Jarallah, Ahmed Naji Delef   +2 more
doaj  

Analytical stress solution framework for lined compressed air energy storage chambers and its application to safe burial depth determination and supporting effectiveness evaluation

Deep Underground Science and Engineering, EarlyView.
An analytical framework delivers a closed‐form stress solution for lined compressed air energy storage chambers, enabling the determination of the minimum safe burial depth. The solution quantitatively evaluates lining support effectiveness, offering a reliable tool for chamber design and optimization.
Zeyuan Sun, Cheng Zhao, Jinquan Xing, Qinyuan Luo   +3 more
wiley   +1 more source