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生物多孔材料干燥过程中组织非稳态收缩(Transient Shrinkage of Tissue of Bio-porous Material during Dehydration)
豌豆 生物多孔材料 非稳态收缩
2009/9/25
根据颗粒体积收缩和平均湿度的变化规律,提出了生物多孔材料干燥组织非稳态收缩的递推模型。利用该模型对40℃热空气干燥下的豌豆各单元层边界半径变化、收缩位移及各层组织的收缩量变化进行了计算。计算结果表明:豌豆在干燥过程中随着湿分的对外迁移、湿度降低,豌豆组织收缩并不是由外向内同步收缩,而是先失去水分的外部先收缩,没有失水的部位不收缩。同时,与内部相比,外部失水较多,收缩幅度也较大。
Comparison of the Swelling and Shrinkage Characteristics of Corcisan Pine(Pinus nigra var. mantima)
Swelling Shrinkage Characteristics Corcisan Pine(Pinus nigra var. mantima)
2009/1/14
The objective of this study was to determine the volumetric swelling and shrinkage characteristics of air-dried Corsican pine in the longitudinal, tangential and radial directions. For this purpose, t...
Angles between cracks developed at primary shrinkage of finegrained soil material
shrinkage cracking patterns
2008/11/26
Angles which are formed between two cracks during primary shrinking were investigated at three open air sites and three laboratory experiments from literature. The objective was to determine the propo...
Shrinkage properties of three clay materials at different temperatures
clay, loam landfill capping Proctor test shrinkage potentia
2008/11/12
This experimental study was performed to obtain a relationship between moisture content and shrinkage potential at different temperatures of three soil materials (quaternary clay and granite loam from...
Swelling-shrinkage properties and hydraulic conductivity of a compacted coal mine tailing rock likely to be used for landfill capping
landfill liner swelling shrinkage water permeability
2008/11/12
The capping and remediation of municipal landfills require large amounts of soil material which should fulfil definite requirements with respect to hydraulic and shrinkage properties. One of such mate...
Strength regain in soil aggregate beds by swelling and shrinkage
precompression stress cohesion angle of friction soil structure bulk density
2008/11/11
Strength regain in aggregate beds as a consequence of wetting and drying cycles was studied in two Andisols and one Mollisol from Chile, collected at two depths (0-10 and 40-60 cm). In the Mollisol, ...
The analysis of shrinkage-swelling behaviour of peat-moorsh soil aggregates during drying-wetting cycles
peat-moorsh soil drying shrinkage rewetting swelling
2010/1/15
The aim of this study was to investigate the soil volume changes for moorsh, willow and moss peat layers during drying-wetting cycles. The measurements of soil volume changes were made using the ‘sara...