24 documents found, page 1 of 3
A multifunctional cementitious composite for pavement subgrade
Roshan, Mohammad Jawed; Abedi, Mohammadmahdi; Correia, A. Gomes; Fangueiro, Raúl; Mendes, P. M.Premature failure and degradation of layers are the main problems for transportation infrastructure. Addressing these issues necessitates implementing structural health monitoring (SHM) for pavement construction layers. To this end, this research investigated the stress/strain and damage detection capabilities of a self-sensing cementitious composite developed for potential utilization in the construction of an...
Performance of self-sensing cement-stabilized sand under various loading condit...
Roshan, Mohammad Jawed; Abedi, Mohammadmahdi; Correia, A. Gomes; Fangueiro, RaúlNumerous elements, such as the composition and characteristics of carbon nanomaterials, the composition and characteristics of the matrix material, moisture levels, temperature, and loading circumstances, influence the piezoresistive behavior of self-sensing cementitious composites. While some past research has explored the impact of some of these factors on the performance of self-sensing cementitious composit...
An innovative cementitious geocomposite for smart infrastructure monitoring
Abedi, MohammadmahdiEsta tese apresenta um trabalho de investigação abrangente sobre materiais geocompósitos cimentícios (areia estabilizada) com capacidade de monitorização. Estas misturas usam materiais inteligentes projetados para monitorização inteligente de infraestruturas em sistemas de transporte e ferrovias. O estudo explora a utilização de nanotubos de carbono híbridos (CNT) e nanoplaquetas de grafeno (GNP) como agentes d...
Thermophysical properties of compressed earth blocks incorporating natural mate...
Turco, Chiara; Abedi, Mohammadmahdi; Teixeira, Elisabete Rodrigues; Mateus, RicardoBuilding materials are responsible for significant CO2 emissions and energy consumption, both during production and operational phases. Earth as a building material offers a valuable alternative to conventional materials, as it naturally provides high hygrothermal comfort and air quality even with passive conditioning systems. However, disadvantages related to high density, conductivity, and wall thickness prev...
The pioneer of intelligent and sustainable construction in tunnel shotcrete app...
Abedi, Mohammadmahdi; Gulisano, Federico; Han, Baoguo; Fangueiro, Raúl; Correia, A. GomesIn this study, a self-sensing and self-heating natural fibre-reinforced cementitious composite for the shotcrete technique was developed using Kenaf fibres. For this purpose, a series of Kenaf fibre concentrations were subjected to initial chemical treatment, followed by integration into the cement-based composite containing hybrid carbon nanotubes (CNT) and graphene nanoplatelets (GNP). The investigation encom...
Influence of cement and water content on the multifaceted capabilities of a sel...
Abedi, Mohammadmahdi; Roshan, Mohammad Jawed; Adresi, Mostafa; Meddah, Mohammed Seddik; Han, Baoguo; Fangueiro, Raúl; Correia, A. GomesThis study investigates the synergistic effects of cement, water, and hybrid carbon nanotubes/graphene nanoplatelets (CNT/GNP) concentrations on the mechanical, microstructural, durability, and piezoresistive properties of self-sensing cementitious geocomposites. Varied concentrations of cement (8% to 18%), water (8% to 16%), and CNT/GNP (0.1% to 0.34%, 1:1) were incorporated into cementitious stabilized sand (...
Advancing infrastructure resilience: A polymeric composite reinforcement grid w...
Abedi, Mohammadmahdi; Al-Jabri, Khalifa; Han, Baoguo; Fangueiro, Raúl; Lourenço, Paulo B.; Correia, A. GomesIn this study, a novel multifunctional grid-shaped polymeric composite (MGPC) with reinforcing, autonomous strain, stress, and damage sensing and localizing in addition to targeted heating capabilities, has been developed. Distinct from preceding composites, this grid synthesizes these features collectively for the first time and concurrently addresses current challenges in multifunctional composites, such as e...
An advanced cement-based geocomposite with autonomous sensing and heating capab...
Abedi, Mohammadmahdi; Roshan, Mohammad Jawed; Gulisano, Federico; Shayanfar, Javad; Adresi, Mostafa; Fangueiro, Raúl; Correia, António GomesThis study introduces an innovative multifunctional cementitious-based geocomposite with self-sensing and selfheating capability, generated for transportation infrastructural health monitoring and traffic recognition. In this route, hybrid graphene nanoplatelets (GNP) and carbon nanotubes (CNT) were uniformly dispersed within a matrix of stabilized sand containing 10% cement. The mechanical and microstructural ...
Evaluation procedure for damage detection by a self-sensing cement composite
Roshan, Mohammad Jawed; Abedi, Mohammadmahdi; Fangueiro, Raúl; Correia, A. Gomes; Silva, Maria ManuelaHealth and safety are relevant in transportation infrastructures. Most health evaluations are performed by spot measurements using conventional transducers. This study aims to explore a self-sensing composite that can be integrated into a structural layer of a pavement or rail track to continuously evaluate the full layer performance in critical zones and anticipate damage occurrence. For this purpose, a 10 % c...
Application of self-sensing cement-stabilized sand for damage detection
Roshan, Mohammad Jawed; Abedi, Mohammadmahdi; Correia, A. Gomes; Fangueiro, RaúlThe sensing ability induced by carbon nanomaterials has attracted considerable attention in the scientific community for use in cement and concrete. However, the application of carbon nanomaterials in stabilized soils has been scarce. Therefore, in this study, the use of multiwalled carbon nanotubes (MWCNTs) and graphene nanoplates (GNPs) in cement-stabilized sand was investigated. MWCNTs and GNPs not only impr...