Polyurea aerogels: synthesis, material properties, and applications

N Leventis - Polymers, 2022 - mdpi.com
Polyurea is an isocyanate derivative, and comprises the basis for a well-established class of
polymeric aerogels. Polyurea aerogels are prepared either via reaction of multifunctional …

Superhydrophobic concrete with enhanced mechanical robustness: Nanohybrid composites, strengthen mechanism and durability evaluation

W She, J Yang, J Hong, D Sun, S Mu, C Miao - Construction and Building …, 2020 - Elsevier
Although biomimetic designs (lotus effect) are likely to play a pivotal role in exploring future
breathable super waterproof surfaces to increase the durability of reinforced concrete, facile …

[HTML][HTML] Seismic performance of post-mainshock FRP/steel repaired RC bridge columns subjected to aftershocks

M Fakharifar, G Chen, L Sneed, A Dalvand - Composites Part B …, 2015 - Elsevier
This study compares the performances of three types of repair jackets on mainshock (MS)
earthquake-damaged RC bridge columns subjected to aftershock (AS) attacks. These repair …

Innovative hybrid reinforcement constituting conventional longitudinal steel and FRP stirrups for improved seismic strength and ductility of RC structures

M Fakharifar, A Dalvand, MK Sharbatdar… - Frontiers of Structural …, 2016 - Springer
The use of fiber reinforced polymer (FRP) reinforcement is becoming increasingly attractive
in construction of new structures. However, the inherent linear elastic behavior of FRP …

Thermal degradation behavior and kinetics of porous polymer based on high functionality components

Y Luo, K Pu, J Gao, Y Zhou, J Wan… - Journal of Applied …, 2024 - Wiley Online Library
Two kinds of porous polymer were prepared based on high functionality components.
Thermogravimetric analysis (TGA) is used to compare the thermal degradation behavior and …

Synthesis of highly cross-linked uniform polyurea aerogels

X Wu, Y Wu, W Zou, X Wang, A Du, Z Zhang… - The Journal of …, 2019 - Elsevier
Polyurea (PUA) aerogel is a kind of advanced material with excellent thermal and
mechanical properties. In this paper, uniform and highly cross-linked PUA aerogels are …

Isocyanate-Derived Aerogels and Nanostructure–Materials Properties Relationships

N Leventis - Springer Handbook of Aerogels, 2023 - Springer
Isocyanates are a class of inexpensive yet versatile organic compounds that serve as the
basis for a wide variety of familiar everyday products such as polyurethane foams …

Stress-Strain Relationship for Polyurea-Confined Circular Concrete Columns under Static Loads.

I Tuhin, M Tazarv - ACI Materials Journal, 2020 - search.ebscohost.com
Confinement enhances mechanical properties of concrete, especially the strain capacity. As
a result, confined reinforced concrete (RC) members usually exhibit higher displacement …