Results 91 to 100 of about 155,668 (129)

Mechanical properties of 3D printed concrete in hot temperatures

Construction and Building Materials, 2021
Concrete 3D printing is continuously studied as a new construction method. However, the use of concrete for this application is challenging in terms of workability and mechanical performance.
Aktham S. Alchaar, A. Al-Tamimi
semanticscholar   +1 more source

Properties and material models for construction materials post exposure to elevated temperatures

Mechanics of materials (Print), 2020
Temperature rise, as in the case of fire, severely damages the properties of construction materials and imposes temperature-induced degradations that alter their microstructure and characteristics.
M. Z. Naser, V. Uppala
semanticscholar   +1 more source

Ultrastable Fe–N–C Fuel Cell Electrocatalysts by Eliminating Non‐Coordinating Nitrogen and Regulating Coordination Structures at High Temperatures

Advances in Materials, 2022
Pyrolyzed Fe–N–C materials have attracted considerable interest as one of the most active noble‐metal‐free electrocatalysts for the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells (PEMFCs).
Dongsheng Xia, Xuan Tang, Sheng Dai, R. Ge, A. Rykov, Junhu Wang, Tzu-Hsi Huang, Kuan-Wen Wang, Yinping Wei, Kai Zhang, Jia Li, Lin Gan, F. Kang   +12 more
semanticscholar   +1 more source

Geopolymers vs. alkali-activated materials (AAMs): A comparative study on durability, microstructure, and resistance to elevated temperatures of lightweight mortars

Construction and Building Materials, 2019
This paper studied the durability, microstructure, and fire behavior of lightweight mortars based on cement, metakaolin (MK), ultrafine ground granulated blast furnace slag (UGGBFS), ceramic waste powder (CWP), and clay brick waste powder (CBWP).
Farshad Ameri, P. Shoaei, S. A. Zareei, B. Behforouz   +3 more
semanticscholar   +1 more source

Multifunctional Graphene Composites for Electromagnetic Shielding and Thermal Management at Elevated Temperatures

Advanced Electronic Materials, 2020
A method for scalable synthesis of epoxy composites with graphene and few‐layer graphene fillers is described, and the electromagnetic interference (EMI) shielding and thermal properties of such composites at elevated temperatures are reported.
Zahra Barani, F. Kargar, A. Mohammadzadeh, S. Naghibi, Carissa Lo, Brandon Rivera, A. Balandin   +6 more
semanticscholar   +1 more source

Influence of PET wastes on the environment and high strength concrete properties exposed to high temperatures

Construction and Building Materials, 2019
The accumulation of polyethylene terephthalate (PET) waste from single use of drinking water bottles and fly ash (FA) generated from power stations has become the main threats to the environment every year. The cement production increases with increasing
I. Alfahdawi, S. A. Osman, R. Hamid, A. Al‐Hadithi   +3 more
semanticscholar   +1 more source