Results 91 to 100 of about 16,284 (296)

Effect of Silica Fume on High-strength Concrete Performance

open access: yes, 2020
Concrete is one of the most widely used construction and building materials. To produce high-strength concrete (compressive strength higher than 40 MPa) water/cement ratio has to be reduced up to 0.4 and more.
Audrius Vaitkus   +7 more
core   +1 more source

Polymaterial Lattice Discrete Particle Model for the Optimization of Lightweight Aggregate Concrete: Intragranular Fracture and Compression Behavior

open access: yesInternational Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT Lightweight aggregate concrete (LWAC) offers clear advantages for sustainable construction, including reduced density and improved thermal insulation. However, its mechanical and fracture behavior is difficult to characterize due to the heterogeneity and brittle crushing of porous lightweight aggregates.
Yuhui Lyu   +7 more
wiley   +1 more source

Synthesis and Characterization of an Azido Nitrofurazanyl Ether: An Energy‐Rich Heterocyclic Plasticizer With a Low Glass Transition Temperature

open access: yesPropellants, Explosives, Pyrotechnics, EarlyView.
ABSTRACT We report on the synthesis and characterization of 3‐(2‐(2‐azidoethoxy)ethoxy)‐4‐nitro‐1,2,5‐oxadiazole (NFPEG2N3), which is a liquid nitrofurazanyl ether that was designed to be an energy‐rich plasticizer for glycidyl azide polymer (GAP)‐ and nitrocellulose (NC)‐based formulations.
P. Lieber   +3 more
wiley   +1 more source

Reliability Based Design of Concrete Mixes with Partial Replacement of Cement by Silica Fume

open access: yes, 2007
iii Structural codes and standards provide the foundation of good engineering practice and a framework for addressing safety and serviceability issues in structural design. They identify natural and man-made forces that must be considered and defined
Ghai, Rajinder
core  

Experimental characterization of injection grouts incorporating hydrophobic silica fume

open access: yes, 2017
(FCT/MCTES) through the scholarship SFRH/BPD/108427/2015. The authors would like to acknowledge the support from the strategic project UID/CTM/50025/2013.This paper puts forward a new hydrophobic silica fume and assesses its contribution to the ...
Maria T. Cidade   +7 more
core   +1 more source

Commercial permethrin elicits chemoreceptive responses on different Anopheles gambiae sensory appendages

open access: yesPest Management Science, EarlyView.
Anopheles gambiae mosquitoes exhibit takeoff responses when presented to commercial permethrin headspace. This product elicits electrophysiological activity in the antennae and tarsi. However, only the chemical information acquired from the tarsi plays a major role in the observed behavioral response.
Sassan S Kambou   +4 more
wiley   +1 more source

Influence of Silica Fume on the Performance of PALC

open access: yes, 2011
The influence of silica fume on the Performance of PALC was studied and the mechanism was analyzed by XRD and SEM in the paper. The results shows that the addition of 4w/% silica fume is favorable for splitting strength of PALC pastes, which is because ...
Xiu Shu Tian, Shu Xia Ren, Zhen Guo Gao
core   +1 more source

Almond Shell‐Derived Cellulosic Microfibres: Extraction, Characterisation and Applications in Sustainable Paper‐Based Packaging

open access: yesPackaging Technology and Science, EarlyView.
Cellulosic microfibres were extracted from almond shells using organosolv, soda and kraft processes, and comprehensive physicochemical, surface, thermal and morphological characterisation demonstrated their strong potential as sustainable fillers for paper‐based packaging application. ABSTRACT This study develops pathways for the valorisation of almond
Lokesh Kumar   +4 more
wiley   +1 more source

Incorporation of Natural Antimicrobial Agents Into Thermoplastic Polymers for Food Applications: Strategies, Efficacy, Challenges and Future Directions

open access: yesPackaging Technology and Science, EarlyView.
This graphical abstract summarizes the main strategies for incorporating natural antimicrobial agents into thermoplastic food packaging polymers, including melt processing, surface deposition, controlled release and chemical immobilization. It highlights the major classes of natural antimicrobials, key advantages such as microbial growth reduction and ...
Florence Akinmeye   +4 more
wiley   +1 more source

Sustainable Utilization and Fire Protection of Wood‐Based Composites in Buildings: Innovations, Challenges, and Future Directions

open access: yesSustainable Development, EarlyView.
ABSTRACT The increasing use of wood and wood‐based composites in construction reflects a global shift toward renewable materials that support sustainable development objectives, including carbon reduction and responsible resource use. While wood offers substantial environmental benefits compared to conventional materials such as concrete and steel, its
Qaisar Munir   +2 more
wiley   +1 more source

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