Results 111 to 120 of about 1,178,507 (312)

Study on axial compressive behavior and mesoscopic structural evolution of FRP confined coal gangue concrete.

open access: yesPLoS ONE
To address the environmental hazards caused by coal gangue waste, coal gangue concrete (CGC) has been proposed as a solution. However, due to its porosity and low strength, CGC faces numerous challenges in practical applications.
Qingwen Li   +7 more
doaj   +1 more source

Investigation of the effectiveness of CFRP strengthening of concrete made with recycled waste PET fine plastic aggregate

open access: yesPLoS ONE, 2022
In recent decades, several studies have considered the use of plastic waste as a partial substitute for aggregate in green concrete. Such concrete has been limited to non-structural applications due to its low strength.
Shaker Qaidi   +9 more
doaj  

Measures to improve the Strength Development of Low Carbon Sprayed Concrete

open access: yes
A characteristic feature of sprayed concrete is the fast setting and hardening. This is typically achieved through a high content of Portland Cement clinker in the concrete in combination with a liquid alkali-free accelerator, which is added at the ...
Unbehau, Sophie   +3 more
core   +1 more source

Hybrid Approaches Towards 3D Concrete Printing for Lightweight Reinforced Concrete Structures [PDF]

open access: yes
3D Concrete Printing (3DCP) has paid little attention to producing material-efficient parts. Material optimization methods, such as topology optimization, often result in forms with complex geometries—extreme overhangs and multi-branching—that are ...
Meibodi, Mania Aghaei   +2 more
core   +1 more source

Understanding and Regulating C–N Coupling Pathways for Electrocatalytic Urea Synthesis From CO2 and NO3−/NO2−

open access: yesAdvanced Science, EarlyView.
Understanding and regulating C–N coupling is central to electrocatalytic urea synthesis from CO2 and NO3−/NO2−. This review outlines representative coupling pathways, summarizes carbon‐ and nitrogen‐side intermediate regulation strategies, and highlights in situ/operando tools for mechanistic clarification and catalyst design. ABSTRACT Electrocatalytic
Xingbao Chen   +5 more
wiley   +1 more source

External Confined Concrete Cylinders Behavior under Axial Compression Using CFRP Wrapping. [PDF]

open access: yesMaterials (Basel), 2022
Karouche A   +5 more
europepmc   +1 more source

Guide to dowel load transfer systems for jointed concrete roadway pavements. [PDF]

open access: yes
This guide provides a summary of the factors and design theories that should be considered when designingdowel load transfer systems for concrete pavement systems (including dowel basket design and fabrication) andpresents recommendations for widespread ...
Iowa State University. National Concrete Pavement Technology Center   +1 more
core  

Non-linear behaviour under compression of hardened 3D-printed concrete [PDF]

open access: yes
3D-printed concrete (3DPC) is becoming increasingly popular due to its ability to offer rapid construction, flexibility in design, reduced labour and material costs, and eco-friendliness as it uses waste materials like plastics and resins.
Menon, Arun   +2 more
core   +1 more source

A State‐Gated Metallo‐DNAzyme Framework Programs Tumor Stress Vulnerability Through Metabolic Licensing

open access: yesAdvanced Science, EarlyView.
A tumor‐state‐gated metallo‐DNAzyme framework integrates miR‐21/APE1‐responsive GLUT1 silencing with Ca/Cu‐partitioned metal–nucleic acid assembly and cystine loading. The framework first weakens glucose‐dependent metabolic buffering and then amplifies copper‐ and disulfide‐associated stress, converting tumor metabolic adaptation into programmable ...
Xiaodong Ma   +8 more
wiley   +1 more source

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