Results 61 to 70 of about 1,569 (283)

Research on the Rebound Hammer Testing of High-Strength Concrete’s Compressive Strength in the Xinjiang Region

open access: yesBuildings, 2023
Enhancing the assessment of compressive strength and the efficiency of rebound hammers in non-destructive testing for high-strength concrete is an urgent issue in construction engineering. This study involved C50 to C90 high-strength concrete specimens, utilizing rebound hammers with nominal energies of 4.5 J and 5.5 J, along with a compression machine.
Jinming Chen   +3 more
openaire   +2 more sources

Application of a Sclerometer to the Preliminary Assessment of Concrete Quality in Structures After Fire

open access: yesArchives of Civil Engineering, 2018
The paper presents a description and results of a study focused on the applicability of the sclerometric method to the preliminary assessment of concrete quality in structures after fire.
Kowalski R., Wróblewska J.
doaj   +1 more source

Structural evaluation for the historic Palace of King Ghazi and mechanism of its rehabilitation

open access: yesCase Studies in Construction Materials, 2020
This paper presents a methodology of structural evaluation for the ancient palace of King Ghazi throughout site inspection, field and laboratory measurements using both non and semi-destructive tests followed by structural analysis.
Adnan Al-Sibahy, Rodger Edwards
doaj   +1 more source

A Comparative Analysis of the Rebound Hammer and Pullout as Non-Destructive Method in Testing Concrete

open access: yesEuropean Journal of Engineering Research and Science, 2020
A comparative analysis between Rebound Hammer and Pullout method in testing concrete was conducted in this study. Experimental analysis were carried out to compare the correctness between the two testing method in estimating the strength of concrete. Different cube (cubes of 175 x 175 x 175) samples were prepared using two mix designs of 1:2:4 and 1:3 ...
openaire   +2 more sources

Guiding and Manipulating Light Fields in Microstructured Liquid Crystals

open access: yesAdvanced Physics Research, EarlyView.
This review summarizes recent advances in guided‐wave optics enabled by microstructured liquid crystal (LC) devices, covering their fundamental material properties, key degree of freedom for dynamic light field manipulations. The advances of linear guided‐wave optics, nonlinear‐optics with spatial optical solitons, and microlasers in LC‐based devices ...
Shan‐shan Chang   +2 more
wiley   +1 more source

Strength- and Moisture-Related Studies of Historical Building Materials: A Case Study from Southern Estonia

open access: yesBuildings
Demolition of existing buildings turns building products into waste. The amount of demolition waste is increasing globally. The current case study is an example of fulfilling the EU Waste Framework Directive of reducing demolition waste by reuse of ...
Aljona Gineiko, Mihkel Kiviste
doaj   +1 more source

A correlation between Schmidt hammer rebound numbers with impact strength index, slake durability index and P-wave velocity

open access: yes, 2011
The main objective of this study was to establish statistical relationship between Schmidt hammer rebound numbers with impact strength index (ISI), slake durability index (SDI) and P-wave velocity.
Sharma, Pramod   +5 more
core   +1 more source

Leveraging Big Multitemporal Multisource Satellite Data and Artificial Intelligence for the Detection of Complex and Invisible Features: The Case of Extensive Irrigation Mapping

open access: yesArchaeological Prospection, EarlyView.
ABSTRACT The detection of buried or obscured archaeological features remains a central challenge in landscape archaeology, particularly in the irrigated floodplains of Mesopotamia where levees and canals formed the basis of complex agrarian systems. This study presents a deep learning–based approach for the large‐scale, automated detection of ancient ...
Nazarij Buławka   +4 more
wiley   +1 more source

Evaluating Concrete Quality using Nondestructive In-situ Testing Methods

open access: yesTecnología y Ciencia, 2019
This manuscript investigate the quality of concrete using non-destructive in-situ testing. The in-situ testing is a process by which different test are carried out such as rebound hammer, ultrasonic pulse veloc-ity, initial surface absorption test and ...
Khalid Abdel Naser Abdel Rahim
doaj   +1 more source

‘When joy comes your way, you have to grab it!’ Troubling how queer joy features in the lives of LGBT+ school‐attending youth in South Africa

open access: yesBritish Educational Research Journal, EarlyView.
Abstract Recently, the concept ‘queer joy’ has gained interest in LGBT+ scholarship in the West. I use this scholarship as an entry point to explore how school‐attending LGBT+ youth express joy and how joy serves as a form of resistance against gender and sexuality norms in educational settings.
Dennis Francis
wiley   +1 more source

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