Results 21 to 30 of about 2,384 (218)

Shear modulus and damping ratio of recycled concrete aggregate from cyclic torsional shear test

open access: yesRoads and Bridges, 2023
This study examines the small-strain dynamic properties of three mixtures of recycled concrete aggregate (RCA) using laboratory investigations typical of natural soils, namely cyclic torsional shear (CTS) tests. In order to construct two samples, crushed
Katarzyna Gabryś
doaj   +1 more source

Viscous Behaviour of Unbound Granular Materials in Direct Shear

open access: yesSoils and Foundations, 2008
ABSTRACT The viscous properties of a variety of poorly graded unbound granular materials were investigated by direct shear tests on 12 cm-cubic specimens. A number of natural sands having different particle shapes and sizes as well as uniform glass beads having different particle sizes were used.
DUTTINE, ANTOINE   +3 more
openaire   +2 more sources

Comparison of Unbound Granular Materials’ Resilient Moduli Determined by Cyclic Triaxial Test and Innovative FWD Device

open access: yesApplied Sciences, 2022
In addition to the conventional laboratory tests of input materials and construction mixtures, the technically correct design of pavement structure involves more frequent functional tests of the input materials and mixtures. Our study summarizes findings
Dusan Stehlik   +9 more
doaj   +1 more source

An Experimental Study of Granular Material Using Recycled Concrete Waste for Pavement Roadbed Construction

open access: yesBuildings, 2022
Rapid worldwide urbanization and drastic population growth have increased the demand for new road construction, which will cause a substantial amount of natural resources such as aggregates to be consumed.
Hasan Al-Mosawe   +3 more
doaj   +1 more source

Calculation Method for Traffic Load-Induced Permanent Deformation in Soils under Flexible Pavements

open access: yesGeotechnics, 2023
Rutting is one of the most common types of distress in flexible pavement structures. There are two fundamental methods of designing pavement structures: conventional empirical methods and analytical approaches.
Mate Janos Vamos, Janos Szendefy
doaj   +1 more source

Pavement Quality Index Rating Strategy Using Fracture Energy Analysis for Implementing Smart Road Infrastructure

open access: yesSensors, 2021
Developing a responsive pavement-management infrastructure system is of paramount importance, accentuated by the quest for sustainability through adoption of the Road Traffic Management System.
Samuel Abejide   +4 more
doaj   +1 more source

Analysis of the bearing capacity of unbound granular mixtures with rubber particles from scrap tyres when used as sub-ballast

open access: yesMateriales de Construccion, 2016
Scrap tyres are a problematic waste material. As a method for recycling large quantities of rubber from scrap tyres, this paper analyses the use of unbound granular mixtures with varying percentages of rubber particles as sub-ballast in railway lines ...
C. Hidalgo-Signes   +3 more
doaj   +1 more source

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

open access: yesAdvanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source

Photodoping in Wide‐Bandgap Perovskite Solar Cells With MXenes

open access: yesAdvanced Optical Materials, EarlyView.
Ultrafast tandem spectroscopy and DFT modeling reveal the separate dynamics and the imbalance of electrons and holes in wide bandgap perovskite solar cells with MXene incorporation. The enhanced photoconversion performances of the devices are traced to photodoping, with selective hole trapping and suppressed recombination of electrons.
Angelica Simbula   +17 more
wiley   +1 more source

Numerical approach to moisture prediction in thin sealed pavements under rainfall influence

open access: yesResults in Engineering
Rainfall is a primary driver of moisture ingress in unbound granular pavements, especially those surfaced with thin sprayed seals. In high-rainfall regions, moisture accumulation can compromise pavement integrity, leading to structural weakening and long-
Ayesh Dushmantha, Chaminda Gallage
doaj   +1 more source

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