Results 11 to 20 of about 3,949,405 (300)

Bending moment analysis of super large ore carrier based on graphical interface development [PDF]

open access: yesE3S Web of Conferences, 2021
In order to improve the safety of shipping process, this paper designs a graphical user interface for calculating the static water bending moment of super large ore earner.
Yongchao Liu   +3 more
doaj   +1 more source

Quantitative Muscle Strength Testing: A Comparison of Job Strength Requirements and Actual Worker Strength Among Military Technicians [PDF]

open access: yesMilitary Medicine, 1989
In this study the authors investigate the percentage of mismatch between job demands and worker physical capacity in Utah National Guard mechanics. This population had demonstrated a higher incidence of low back trouble than other job descriptions reviewed.
D M, Pedersen   +4 more
openaire   +2 more sources

Prediction of Lightweight Aggregate Concrete Compressive Strength [PDF]

open access: yesJournal of Rehabilitation in Civil Engineering, 2018
Nowadays, the better performance of lightweight structures during earthquake has resulted in using lightweight concrete more than ever. However, determining the compressive strength of concrete used in these structures during their service through a none-
Omid Fatahi, Saeed Jafari
doaj   +1 more source

MITIGATION OF ADDITIONAL OVERDESIGN IN PORTLAND CEMENT CONCRETE BY OPTIMIZING THE CEMENTITIOUS MATERIALS CONTENT

open access: yesMix Sustentável, 2022
More cement does not necessarily make better concrete or expedite construction schedules. In contrast, concrete with lower cementitious content can reach sufficient strength on time to avoid construction delays and last longer.
Rodrigo Antunes
doaj   +1 more source

ANALYSIS OF CONCRETE REFLECTANCE CHARACTERISTICS USING SPECTROMETER AND VNIR HYPERSPECTRAL CAMERA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
The purpose of this research is to extract spectral reflectance characteristics of concretes through basic experiment on concrete specimens and site experiment on actual concrete structures using a field portable spectrometer and a VNIR hyperspectral ...
J.-D. Lee   +4 more
doaj   +1 more source

Potential of oil-lubricated cylindrical plastic gears

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2018
Bending strength of injection molded polyacetal test gears is investigated in back-to-back testing using oil-lubrication. To validate state of the art calculation methods, tooth geometries with a variable number of teeth are investigated, maintaining a ...
Christian HASL   +4 more
doaj   +1 more source

Estimation of Rock Burst Grades Using Rock Mass Strength

open access: yesAdvances in Civil Engineering, 2020
The traditional rock burst estimation method is usually based on the σc (rock strength) in practice, while the actual occurrence of rock burst depends more on the structure and strength of the rock mass. In this work, the actual rock bursts occurred in a
Yalei Wang   +3 more
doaj   +1 more source

Effect of Impact Hot- Dry Weather Conditions on the Properties of High Performance Lightweight Concrete [PDF]

open access: yesEngineering and Technology Journal, 2018
The aim of this investigation is to produce high performance lightweight aggregate concrete in actual hot- dry weather conditions, and then study the combined effect of hot-dry weather conditions on the fresh properties of high performance lightweight ...
Hisham Ahmed, Wasan Khalil, Nada Jumaa
doaj   +1 more source

Study on estimation of compressive strength of concrete in structure using ultrasonic method

open access: yesJapan Architectural Review, 2018
In this study, for improving the accuracy of estimating the compressive strength of concrete using the ultrasonic method, a method for measuring the ultrasonic velocity and a method for estimating the strength of concrete were investigated.
Satoshi Watanabe   +3 more
doaj   +1 more source

A Shear Strength Model for a Subsidence Backfill Body Based on Adhesion Friction Theory

open access: yesAdvances in Civil Engineering, 2020
Proper determination of the shear strength of the backfill body used to fill the subsidence is the basis for subsidence restoration and the stability analysis of materials.
Lei Liu   +4 more
doaj   +1 more source

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