نتایج جستجو برای: drying shrinkage

تعداد نتایج: 36314  

M. T. Kazemi,

Realistic prediction of concrete shrinkage and creep requires the calculation of the distributions of relative humidity at various times. Although the distributions of the relative humidity can be computed by numerical methods from the differential equation for diffusion, simple prediction formulas can facilitate structural analysis. The purpose of this paper is to present a simple formula for ...

M. T. Kazemi,

Realistic prediction of concrete shrinkage and creep requires the calculation of the distributions of relative humidity at various times. Although the distributions of the relative humidity can be computed by numerical methods from the differential equation for diffusion, simple prediction formulas can facilitate structural analysis. The purpose of this paper is to present a simple formula for ...

Journal: :Fibers and Polymers 2021

Shrinkage of wool fabrics caused during tumble drying is a serious defect. In the process, felting shrinkage was influenced by moisture content and temperature fabric as well mechanical action being applied on fabric. current study, relationship between studied in programs under no heating condition or heated condition. This study also analyzed behaviors untreated Chlorine-Hercosett treated wit...

Journal: :Journal of Structural and Construction Engineering (Transactions of AIJ) 2012

2007
Katri Luostarinen

Deformations of timber, caused mainly by anisotropic shrinkage, can be partially directed by controlling annual ring orientation through different sawing patterns. Ring orientation also affects the movement of water from within the board to its surface, with rapidity of drying having implications for the wood colour. Here sawn silver birch (Betula pendula Roth) timber was classed into two group...

Journal: :روش های عددی در مهندسی (استقلال) 0
محمدتقی کاظمی m. t. kazemi

realistic prediction of concrete shrinkage and creep requires the calculation of the distributions of relative humidity at various times. although the distributions of the relative humidity can be computed by numerical methods from the differential equation for diffusion, simple prediction formulas can facilitate structural analysis. the purpose of this paper is to present a simple formula for ...

Journal: :Aij Journal of Technology and Design 2023

New type admixtures were developed for High-fluidity and Super-low shrinkage concretes with water-cement ratio of 40-55%. Properties fresh hardened using these studied by laboratory test. concretes, such as strength durability investigated experimentally. Furthermore, effects reducing restraining cracks verified test on drying cracking restrained concrete. More than 10% drying-shrinkage reducti...

Journal: :Nexo 2023

In this work, the drying kinetics of ginger (Zingiber officinale Roscoe) was studied considering shrinkage effect. The experimental data were obtained using three different temperatures (40, 60, and 80 °C). For determination shrinkage, two cutting orientations employed. volumetric thickness evaluated by direct measurement. showed periods during had a considerable effect on rate. An equation tha...

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