Results 251 to 260 of about 3,354,348 (302)

Long-Term Strength Development of Controlled Low-Strength Material

ACI Materials Journal, 2002
This paper presents results of an experimental study conducted to evaluate the combined effects of prolonged mixing time, late water inclusion, and variations in total water content on the long-term compressive strength of controlled low-strength material (CLSM). Long-term strengths refer to strengths measured after 600 days of curing.
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Diffusion locking effect on long-term strength

Moscow University Mechanics Bulletin, 2014
The diffusion locking effect on the long-term strength of metals is studied in the case of aggressive media. In order to model this effect, the diffusion equation with a variable diffusion coefficient is solved approximately. It is shown that, when determining the long-term strength of metals in aggressive media, it is necessary to take into account ...
A. M. Lokoshchenko, D. A. Kulagin
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Long‐Term Strength Development of Pavement Concretes

Journal of Materials in Civil Engineering, 1994
Development of pavement concrete compressive strength, flexural strength, and splitting tensile strength as a function of time is discussed. Eighteen sets of post‐1985 exerimental data from academic and industrial sources were selected to form a database of strength data for “modern” pavement concrete.
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Assessment of Long-Term Strength of Rocks

Key Engineering Materials, 2017
In relation to extraction of coal seams at significant depths, the issue of protection of safety equipment against pressure exerted by rock becomes very important. In many surveys of the effects of pressure exerted by rock it was demonstrated that the intensity of stress around the mine works increases the greater the depth of the mine works.
Alexander N. Kravcov, Pavel Svoboda, Vaclav Pospíchal, Dmitry V. Morozov, Pavel N. Ivanov   +4 more
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Long-Term Strength Estimation of Zirconia Ceramics

Proceedings of Higher Educational Institutions. Маchine Building, 2020
A standard experimental assessment of the service life of high-temperature zirconia ceramics (GOST 4070–2014) requires the use of complicated heating and measuring equipment and hundreds of expensive specimens. This necessitates the development of calculation methods for evaluating long-term strength depending on the thermomechanical loading conditions
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Long-Term Strength and Damage Analysis of Laminated Composites

AIAA Journal, 1997
A modified version of the probabilistic model for damage evolution analysis of laminates subjected to random loading is utilized to predict long-term strength of laminates. The model assumes that each ply in a laminate consists of a large number of mesovolumes.
Dzenis, Yuris A., Joshi, Shiv P.
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Long Term Strength Gain of Controlled Low-Strength Materials

1998
Controlled low-strength material (CLSM) is commonly used as a backfill in utility trenches and other applications. The fill must gain sufficient strength to allow for early repaying and support traffic loads. However, the ultimate strength of the fill material must not exceed 50 to 200 psi (0.344 to 1.38 MPa) to allow for re-excavation of the trench ...
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Long-term Creep Strength of Creep Strength Enhanced Ferritic Steels

2007
Overestimation of long-term creep strength of creep strength enhanced ferritic steels is caused by inflection of a relation between stress and time to rupture. Creep rupture strength of those steels has been re-evaluated by a region splitting analysis and allowable tensile stress of some steels regulated in METI (Ministry of Economy, Trade and Industry)
Kazuhiro Kimura, Kota Sawada, Hideaki Kushima, Yoshiaki Toda   +3 more
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Long-term microtensile bond strength of surface modified zirconia

Dental Materials, 2011
To compare long-term microtensile bond strength of zirconia, surface-modified via a novel treatment, to current surface conditioning methods for zirconia, when resin bonded to dental composite.Two ProCAD (porcelain) and 10 sintered ZirCAD (ZrO(2)) blocks (18 mm × 14 mm × 12 mm) were obtained from manufacturers.
Robert L, Smith, Carlos, Villanueva, James K, Rothrock, Cristina E, Garcia-Godoy, Brian R, Stoner, Jeffrey R, Piascik, Jeffrey Y, Thompson   +6 more
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Distribution fitting for long term electric field strength measurements

2017 40th International Conference on Telecommunications and Signal Processing (TSP), 2017
As a result of the enormous increase in usage of wireless systems; electromagnetic radiation (EMR) sources in residential areas as well as the exposed EMR levels has increased significantly. Therefore this study aims to determine the exposed E levels and characterize the electromagnetic environment on the basis of long term (24 hours) E measurements ...
Kurnaz, Cetin, Engiz, Begum Korunur
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