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Showing 1 to 16 of 16 for “"equilibrium moisture content"”.
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Equilibrium moisture content measurement for porous building materials at various temperatures
… directed by a GW-BASIC computer program. Sample moisture content is gravimetrically determined in situ. The system can maintain dry-bulb temperatures between 10 C and 70 C. At room temperature, the apparatus can maintain relative humidities between o and 90 per cent. Low temperature set points …
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A study of the effect of temperature and relative humidity on the drying rate and equilibrium moisture content of hay
… or the air supply on the drying rate and equilibrium moisture content of hay. The equilibrium moisture content is that moisture content at which no further moisture will be removed from the hay by a particular combination of temperature and relative humidity. The elementary laws of …
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Mechanical behavior of red oak in transverse compression as affected by hydro-treatments and its relations to changes in cell wall structure and composition
… of cell wall collapse. Specific gravity and equilibrium moisture content were decreasing and air-dry density was increasing with an increase in steaming time. Color of wood became darker and the fluid content brighter with prolonged steaming.
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Moisture diffusion through vinyl ester/clay nanocomposites
Moisture diffusion was studied through vinyl ester samples containing up to 5 wt% montmorillonite clay; two different kinds of clay surface treatments were employed to make the clay compatible with the vinyl ester resin. These nanocomposites were characterized using differential scanning …
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Changes in wood-flake properties in relation to heat, moisture, and pressure during flakeboard manufacture
… 2 levels each of platen temperature, initial mat moisture content, and press closing time. Temperature and gas pressure occurring at the face and core of the mat, along with platen pressure, were recorded throughout the press cycles. Data is presented graphically as a function of press time. Face …
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The Moisture Transport Properties of Cement Mortar under Salt Spray Deposition
The moisture transport properties of porous materials play a crucial role in building energy consumption and indoor thermal comfort. Due to the salt spray climate, the external boundary conditions of buildings in coastal areas differ significantly from those in inland regions. Under salt spray …
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Wood Material Behavior in Severe Environments
… knowledge is needed are: the high temperature equilibrium moisture content (EMC) behavior and the moisture dependent softening behavior. EMC data was collected and desorption isotherms were generated for mature and juvenile wood of aspen, loblolly pine and yellow-poplar at 50 and 160°C. High …
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Application of quality control and other statistical methods to the precision wood industry
… in case size and to differences in the predicted equilibrium moisture content of wood in the plant during manufacture. These relationships were presented as a basis for determining the months of the year during which it will be economically profitable to 3-ply chests of various sizes as a …
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Developing an Evaluation Program for Lumber Drying Operations in Bolivia
… and formulate actions for improvement. Equilibrium moisture content (EMC) during storage, manufacturing and shipping was monitored in plants located in three Bolivian cities and inside containerized shipments of wood products. Findings showed differences between EMC and lumber moisture …
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Analysis of Calcutta bamboo for structural composite materials
… were relative density, dimensional stability, equilibrium moisture content, bending strength and stiffness, tensile strength, pH, buffer capacity, wettability and the adhesive penetration. In addition to this, a prototype bamboo parallel strip lumber (BPSL) was manufactured and tested for its …
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The effect of moisture gradients on the stiffness and strength of yellow-poplar
Wood with a uniform moisture distribution is known to have different mechanical properties compared to wood with a non-uniform moisture distribution. Moisture gradients are likely to develop in full-size members tested in the In-Grade Testing Program and might therefore affect the test results. The …
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Use of ultrasonication, thermogravimetric analysis and newly developed hot-air drying platform for evaluation and optimization of drying processes of agricultural materials
… time by up to 22%, yielding products with lower equilibrium moisture content (which can improve shelf-life), and increasing the hydration rate and equilibrium moisture content of hydrated grains. The second study was undertaken to examine changes in the drying and drying rate curves, moisture …
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Fuel moisture and fuel dynamics in woodland and heathland vegetation of the Sydney Basin
… and fuel beds in bushfires: dead fine fuel moisture (FFM). Two common Sydney Basin vegetation types, eucalypt woodland and heathland, each with a history of problematic fire management, were measured in the field for diurnal fluctuations in FFM following rain, under conditions similar to …
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Primary Driving Force in Wood Vacuum Drying
… were calculated and compared. The concept of equilibrium moisture content under the vacuum was developed. The theoretical maximum moisture content drop in one cycle was calculated using energy balance. The model was developed for the vacuum drying to understand the mechanism of the vacuum …
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The Improvement of Interfacial Bonding, Weathering and Recycling of Wood Fibre Reinforced Polypropylene Composites
… (MAPP) as a coupling agent. A fibre content of 50 wt% with 3 wt% MAPP was found to be optimum. Alkali treatment of fibre was carried out to improve the interfacial bonding. After treatment, fibre surface charge was found to increase, but single fibre tensile strength (TS) and Young's …
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Investigating the effect of amorphization method on the physicochemical properties and heat- and moisture-induced crystallization behaviors of amorphous sucrose
… sugars are prone to unwanted heat and/or moisture-induced physical changes, including stickiness, caking, and recrystallization, which decrease product stability and alter product quality attributes, such as texture, taste, aroma retention, and drug efficacy. As a result, the physical …