Comparison of Moisture Absorption/Desorption Properties of Carbonized Boards Made from Wood-Based Panels

Lee, Min; Park, Sang‐Bum; Lee, Sang‐Min

doi:10.5658/wood.2016.44.3.424

Cited by 4 publications

(4 citation statements)

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“…the case of the wood and wood-based materials tested in this study, moisture absorption can be predicted to continue even when 12 hours have passed.However, the results in this study differed from the results in a study conducted byLee et al (2016) in which the absorption rate of carbonized MDF and carbonized PB reached 0 g/㎡•h when 9 hours passed.…”

contrasting

confidence: 99%

“…In a study conducted to improve areas where moisture damage such as moisture absorption and dew condensation is a concern when wooden buildings are constructed, Lee et al (2016) made carbonized boards using four kinds of wood-based materials (plywood, OSB, MDF, and PB) and compared the moisture absorption/desorption properties of the carbonized boards.…”

Section: Introductionmentioning

confidence: 99%

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Moisture Absorption and Desorption Properties of Douglas Fir, Hinoki, Larch, Plywood, and WML Board® in Response to Humidity Variation

Park¹,

Jo²

2020

Journal of the Korean Wood Science and Technology

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In this study, the moisture absorption and desorption properties presented by the Health-Friendly Housing Construction Standards of South Korea were compared using the wood of three tree species (Douglas-fir, Hinoki, Larch) and two types of wood-based materials(Plywood, WML Board Ⓡ ). The national standards for functional building materials present that the amounts of moisture absorption and desorption should be at least 65g/㎡ on average, respectively according to the test method under KS F 2611:2009. Therefore, in this study, the moisture absorption/desorption properties of materials with no treatment (Control), with punching, and with surface stain finishing and the moisture absorption/desorption property improvement effects of the treatments were compared and analyzed. According to the results of this study, it was evaluated that all five types of wood and wood-based materials tested did not satisfy the amount of moisture absorption/desorption of at least 65g/㎡, which is the performance standard for moisture absorption/desorption functional building materials, indicating that untreated wood and wood-based materials cannot be applied as functional finishing materials according to the Health-Friendly Housing Construction Standards. The surface stain finishing greatly reduced the moisture absorption and desorption rates of the materials, and the amounts of moisture absorbed and desorbed were also shown to decrease by at least two times on average. When the surfaces of the materials were punched with ∅4mm holes at intervals of 20 mm, the moisture absorption/desorption areas increased from 18% to 51%, and this increase was shown to be capable of increasing the amounts of moisture absorbed/desorbed by 29% on average at the minimum, and 81% on average at the maximum. The effects of punching were shown to be identical even in cases where the materials were stain finished. For the application of wood or wood-based materials as eco-friendly, health-friendly, and moisture absorption/desorption functional building materials hereafter, it is judged that new physical and chemical improvement studies should be conducted, and treatment methods should be developed.

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confidence: 99%

Section: Introductionmentioning

confidence: 99%

Moisture Absorption and Desorption Properties of Douglas Fir, Hinoki, Larch, Plywood, and WML Board® in Response to Humidity Variation

Park¹,

Jo²

2020

Journal of the Korean Wood Science and Technology

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“…Wood is the most used eco-friendly material on the planet, with applications ranging from landscaping, building, and furniture (Dirna et al, 2020;Fujimoto et al, 2021;Hwang and Oh, 2022;Kim and Kim, 2021;Mokhirev et al, 2021;Park and Jo, 2020;Park et al, 2022;Schulz et al, 2021;Yang et al, 2020;Yun et al, 2021). Wood also improves indoor air quality by absorbing or releasing moisture from the air to maintain proper humidity and lowers stress by stabilizing humans emotionally (Lee et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Investigation of Sound Absorption Ability of Hinoki Cypress (Chamaecyparis obtusa) Cubes

Jang¹

2022

J. Korean Wood Sci. Technol.

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Today, commercialized Hinoki cypress cubes are used for fragrance, humidification, and pillows in Korea. In this study, the sound absorption ability of Hinoki cypress (Chamaecyparis obtusa) cubes was examined. The three groups of Hinoki cypress cubes were prepared depending on their dimension (L: 9 × 9 × 9, M: 7 × 7 × 7, S: 4 × 4 × 4 mm). Their sound absorption coefficient was examined after filling 6, 8, 10, and 12 cm height in impedance tubes, respectively. Overall, the sound absorption ability depending on dimension was superior in the M group compared to the L and S groups. Also, as the filling height increased, the sound absorption capacity increased. In sum, noise reduction coefficients (NRC) of all Hinoki cypress cubes were 0.41-0.59. Thus, this research found that Hinoki cypress cubes have a sound-absorbing function.

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“…The stability of timber frame building is highly influenced by moisture content (MC) of structural members (Lee, 2016b). The structural health condition of the old timber building should be monitored by checking the MC of the structural member.…”

Section: Introductionmentioning

confidence: 99%

Effects of Density, Temperature, Size, Grain Angle of Wood Materials on Nondestructive Moisture Meters

Pang¹,

Jeong²

2019

Journal of the Korean Wood Science and Technology

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The aim of this study was to investigate the effects of density, temperature, size, and grain direction on measurement of moisture contents (MC) of wood materials non-destructively. The MC of different sizes of solid wood, glulam, and CLT from larch (larix kaempferi, 560 kg/m 3 ) and pine (pinus koraiensis, 430 kg/m 3 ) were measured using the dielectric type and resistance type meters. The specimens were conditioned in the environmental chamber to be equilibrium moisture content (EMC) of 12 % and 19 %. When density setting in dielectric type meter was increased from 400 kg/m 3 to 600 kg/m 3 , the MCs of specimen (S-L-100-E) were decreased from 13.4 % to 11.3 %. However, when wood group (WG) setting in resistance type meter was changed from WG1 to WG4, the measured MCs were increased from 9.2 % to 12.3 %. When temperature setting in resistance type meters was changed from 0 to 35 ℃, the MC was decreased from 17.0 % to 13.0 %. The MCs measured by dielectric type meter for larger specimens (S-L-100-E_11.3 %, G-L-240-E_11.7 % and C-L-120-E_12.8 %) were higher than those of small size specimens (S-L-30-E_8.7 %, G-L-150-E_10.3 %, and C-L-90-E_9.7 %). The MCs measured by resistance type meter for larger specimens (G-L-240-E_11.6 % and C-L-120-E_13.3 %) were also higher than those of small size specimens (G-L-150-E_10.4 %, and C-L-90-E_11.8 %). The resistance type meter was not affected by the grain direction but the dielectric type meter were affected by the grain direction. The MC measured by resistance type meter for G-L-120-E perpendicular to grain direction was 11.5 % and the measured MC parallel to grain direction was 11.3 %. The MC measured by dielectric type meter parallel to grain direction (12.1 %) was higher than that measured perpendicular to grain direction (10.7 %).

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Comparison of Moisture Absorption/Desorption Properties of Carbonized Boards Made from Wood-Based Panels

Cited by 4 publications

References 4 publications

Moisture Absorption and Desorption Properties of Douglas Fir, Hinoki, Larch, Plywood, and WML Board® in Response to Humidity Variation

Moisture Absorption and Desorption Properties of Douglas Fir, Hinoki, Larch, Plywood, and WML Board® in Response to Humidity Variation

Investigation of Sound Absorption Ability of Hinoki Cypress (Chamaecyparis obtusa) Cubes

Effects of Density, Temperature, Size, Grain Angle of Wood Materials on Nondestructive Moisture Meters

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