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LY/T 3193-2020: Terminology of bamboo-based materials for engineering
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Terminology of bamboo-based materials for engineering
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LY/T 3193-2020
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Basic data | Standard ID | LY/T 3193-2020 (LY/T3193-2020) | | Description (Translated English) | Terminology of bamboo-based materials for engineering | | Sector / Industry | Forestry Industry Standard (Recommended) | | Classification of Chinese Standard | B60 | | Classification of International Standard | 01.040.65 | | Word Count Estimation | 27,223 | | Date of Issue | 2020-03-30 | | Date of Implementation | 2020-10-01 | | Regulation (derived from) | Announcement No. 6 of 2020 by the State Forestry and Grassland Bureau | | Issuing agency(ies) | State Forestry and Grassland Administration | LY/T 3193-2020: Terminology of bamboo-based materials for engineering---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Terminology of bamboo-based materials for engineering
ICS 01.040.65
B 60
Terminology for Bamboo Engineering Materials
2020-03-30 released
2020-10-01 Implementation
Issued by the State Forestry and Grassland Administration
People's Republic of China Forestry Industry Standard
Foreword
This standard is compiled in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed and managed by the National Bamboo and Rattan Standardization Technical Committee (SAC/TC 263).
Drafting organizations of this standard. Research Institute of Wood Industry, Chinese Academy of Forestry, International Center for Bamboo and Rattan, International Organization for Bamboo and Rattan, Fujian Jixing
Bamboo Industry Co., Ltd., Fujian Jinzhu Bamboo Industry Co., Ltd., Hangzhou Runzhu Technology Co., Ltd., Hongya Zhuyuan Technology Co., Ltd., Jiangxi Bamboo Branch
Technology Co., Ltd., Nanjing Forestry University, Qingdao Guosen Machinery Co., Ltd., Shaoxing Zhonghe Bamboo and Wood Products Co., Ltd., Sichuan University, Taierjiao
Adhesive (Guangdong) Co., Ltd., Xuancheng Hongyu Bamboo Industry Co., Ltd.
The main drafters of this standard. Yu Wenji, Yu Yanglun, Ren Dinghua, Li Xiaohua, Liu Kewei, Wang Ge, Ren Haiqing, Deng Kan, Zhang Xinpei,
Li Haitao, Jiang Yongjian, Ren Xiang, Wang Zhong, Zhou Chungui, Li Xiaoxian, Li Shenglong, Xin Xianjun, Li Xingde, Zhu Rongxian, Liu Xianmiao, Zhang Yahui,
Zhang Yamei, Zhong Yong, Qi Yue, Huang Yuxiang, Lin Qiuqin.
Terminology for Bamboo Engineering Materials
1 Scope
This standard specifies the common terms and definitions of bamboo engineering materials.
This standard applies to engineering construction materials made from bamboo as the main raw material.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document.
For undated references, the latest version (including all amendments) applies to this document.
GB/T 18259-2018 Artificial board and its surface decoration terms
GB/T 36394-2018 Bamboo Product Terminology
3 Terms and definitions
3.1 Unit term
3.1.1
Bamboo
The collective term for the different morphological units produced by the decomposition of bamboo stalks.
[GB/T 36394-2018, definition 2.1]
3.1.2
Bamboo culm
The above-ground stems of bamboo plants.
[GB/T 36394-2018, definition 2.1.1]
3.1.3
Bamboo culm section
The bamboo stalk has a certain length of unit after being crossed.
[GB/T 36394-2018, definition 2.1.7]
3.1.3.1
Half-split bamboo culm
The bamboo tube is longitudinally divided into semicircular units.
3.1.3.2
Arc bamboo culm
The bamboo tube is longitudinally divided into arc-shaped units with a certain arc in section, usually 3 or 4 equal pieces of bamboo.
3.1.4
Bamboo split
The bamboo tube is divided longitudinally and has a narrow and long sheet with bamboo green and bamboo yellow.
[GB/T 36394-2018, definition 2.1.8]
3.1.5
Bamboo strip
The bamboo slices are machined to form a strip-shaped bamboo slice with certain specifications and dimensions and a substantially rectangular cross section.
[GB/T 36394-2018, definition 2.1.9]
3.1.5.1
Rough planed bamboo strip
After planing, bamboo green and yellow bamboo are basically removed, and bamboo strips with a certain size are removed.
[GB/T 36394-2018, definition 2.1.9.1]
3.1.5.2
Fine planed bamboo strip
The rough planed bamboo strips are dried and precisely planed to reach the specified size and quality requirements.
[GB/T 36394-2018, definition 2.1.9.2]
3.1.5.3
Natural-coloured bamboo strip
Bamboo strips with natural bamboo color.
[GB/T 36394-2018, definition 2.1.9.3]
3.1.5.4
Bleached bamboo strip
Bamboo strips lightened by bleaching treatment.
[GB/T 36394-2018, definition 2.1.9.4]
3.1.5.5
Caramelised bamboo strip
Bamboo strips with darkened color after heat treatment.
[GB/T 36394-2018, definition 2.1.9.5]
3.1.5.6
Finger-jointed bamboo strip
A bamboo strip with certain specifications and dimensions formed by finger-joining along the length.
[GB/T 36394-2018, definition 2.1.9.6]
3.1.5.7
Flattened bamboo
The bamboo tube is softened, expanded, and shaped into a sheet material.
[GB/T 36394-2018, definition 2.1.12]
3.1.6
Bamboo sliver
A thin unit made by longitudinally splitting bamboo.
[GB/T 36394-2018, definition 2.1.10]
3.1.6.1
Radial bamboo sliver
Bamboo strips formed by radially splitting bamboo slices.
3.1.6.2
Tangential bamboo sliver
The bamboo strips are divided into the meridian direction.
3.1.7
Bamboo curtain
A curtain made of bamboos arranged in parallel and woven.
3.1.7.1
Bamboo sliver curtain
A bamboo curtain woven from bamboo strips.
3.1.7.2
Bamboo bundle curtain
A bamboo curtain woven from bamboo bundles.
3.1.7.3
Bamboo stick curtain
A bamboo curtain woven from bamboo silk.
3.1.8
Bamboo mat
A mat made of interlaced bamboo strips.
[GB/T 36394-2018, definition 2.1.13]
3.1.9
Bamboo bundle
The bamboo material is cross-linked and basically maintains the loose bundle unit of the original ordering mode of the fiber obtained by processing such as roll-compression decomposing.
3.1.9.1
Strip-type bamboo bundle
The slender bamboo bundles are made from bamboo chips, bamboo strips and bamboo strips, the width of which is generally less than 10cm.
3.1.9.2
Sheet-type bamboo bundle
Fiberized bamboo veneer
Semicircular bamboo tubes and arc-shaped bamboo tubes make bamboo bundles with a certain width, the width of which is generally more than 10cm.
3.1.9.3
Natural bamboo bundle
Bamboo bunches with natural bamboo color.
3.1.9.4
Caramelised bamboo bundle
Bamboo bunches that have been heat-treated to darken the color
3.1.10
Bamboo stick
A single bamboo chip or bamboo strip is processed into a slender unit with a similar width and thickness.
[GB/T 36394-2018, definition 2.1.16]
3.1.11
Bamboo particle
Bamboo scraps
The flaky, needle-like and granular units with a certain shape and size are formed by mechanical processing of bamboo.
[GB/T 36394-2018, definition 2.1.17]
3.1.11.1
Bamboo strand particle
The average length of bamboo material is greater than 50mm, the thickness is generally less than 1mm, and the aspect ratio is more than 2.1.
[GB/T 36394-2018, definition 2.1.19]
3.1.11.2
Bamboo stick particle
Bamboo shavings are reprocessed by a hammer mill. The thickness and width are similar, about 3mm~6mm, and the length is 4 to 5 times the thickness.
3.1.12
Bamboo fiber
Bundles, filaments or flocculent units containing single fiber cells or multi-fiber cell aggregates made by chemical or mechanical processing of bamboo.
[GB/T 36394-2018, definition 2.1.20]
3.1.12.1
Bamboo fiber for panels
Bundle-shaped short fibers made by mechanically refining bamboo, suitable for the production of fiberboard and other composite materials.
[GB/T 36394-2018, definition 2.1.20.1]
3.1.13
Bamboo flour
Powder processed from bamboo.
[GB/T 36394-2018, definition 2.1.22] [GB/T 36394-2018, definition 2.1.20]
3.2 Material terms
3.2.1
Bamboo-based material for engineering
Materials used for engineering construction made of bamboo as the main raw material, including round bamboo for engineering and engineering bamboo.
3.2.2
Round pole bamboo for engineering
After processing, the bamboo stalks can be directly used for engineering construction.
3.2.3
Engineered bamboo
The board, square or profile made of bamboo after reorganization or composite processing and can meet the requirements of project construction.
3.2.4
Bamboo-based panels
A board made of bamboo by sizing and pressing.
3.2.4.1
Decorative bamboo-based panels
Bamboo wood-based panels with decorative and processed surfaces.
[GB/T 36394-2018, definition 2.2.1]
3.2.4.2
Overlaid bamboo-based panels with resin impregnated paper
Film-coated bamboo wood-based panel
Bamboo wood-based panels covered with synthetic resin impregnated paper.
[GB/T 36394-2018, definition 2.2.1.2]
3.2.5
Bamboo veneer
A sheet-like material with a certain width, which is sliced or sawed from bamboo tube peeling, bamboo glulam or bamboo composite timber.
[GB/T 36394-2018, definition 2.1.11]
3.2.6
Plybamboo
Bamboo is pressed according to the principle of plywood.
3.2.7
Bamboo sliver panel
Bamboo plywood is a bamboo plywood formed by crisscrossing and forming blanks.
3.2.7.1
Bamboo curtain panel
The bamboo curtain is a bamboo plywood made by crisscrossing and gluing.
3.2.7.2
Bamboo mat panel
Bamboo mat plywood
The bamboo mat is made of bamboo plywood by assembling and gluing.
3.2.8
Bamboo strip panel
A bamboo plywood made of bamboo strips crisscrossed together and glued together.
3.2.8.1
Plain pressed bamboo strip panel
The finely planed bamboo strips are placed horizontally and glued, and then horizontally pressed into a bamboo strip plywood with a wide line pattern.
Figure 1 Flat pressed bamboo plywood
3.2.8.2
Side pressed bamboo strip panel
The finely planed bamboo strips are vertically placed and glued, and then pressed laterally to form a bamboo strip plywood with a narrow line pattern.
Figure 2 Side-pressed bamboo plywood
3.2.8.3
Combined bamboo strip panel combined bamboo strip panel
Finely planed bamboo strips are placed and glued at horizontal or vertical intervals, and the bamboo strip plywood is made by flat pressing and side pressing.
Figure 3 Combined bamboo plywood
3.2.9
Bamboo bundle panel
A bamboo plywood made by crisscrossing bamboo bundles and gluing together.
3.2.10
Composite plybamboo
A bamboo plywood made of two or more kinds of bamboo materials according to the crisscross pattern and gluing.
3.2.11
Laminated bamboo sliver lumber
The board and square timber are laminated and glued together with bamboo strips.
3.2.12
Laminated bamboo curtain lumber
A square board made of bamboo curtains along the pattern of laminated blanks, glued and hot pressed.
[GB/T 36394-2018, definition 2.2.7]
3.2.13
Glue laminated bamboo
The planed bamboo slats are slabs and squares formed by forming and gluing along the grain in the length direction.
3.2.13.1
Laminated flattened bamboo
Bamboo laminated timber made of bamboo panels.
3.2.13.2
Laminated finger-jointed bamboo
Directional Reorganization of Bamboo Glulam
Bamboo laminated timber made from finger-joined bamboo strips.
3.2.13.3
Plain pressed glue laminated bamboo
The finely planed bamboo strips are placed horizontally and glued, and then horizontally pressed into a bamboo laminated timber with a wide line pattern.
Figure 4 Flat pressed bamboo laminated timber
3.2.13.4
Side pressed glue laminated bamboo
The finely planed bamboo strips are placed vertically and glued, and then pressed laterally to form a bamboo glulam with a pattern of narrow lines.
Figure 5 Side pressure type bamboo laminated timber
3.2.13.5
Combined glue laminated bamboo
At the same time, it is a bamboo laminated lumber made of a combination of flat-pressed and side-pressed laminated bamboo.
Figure 6 Combined bamboo laminated timber
3.2.14
Reorganized bamboo bamboo scrimber
Reconstituted bamboo timber
The bamboo bundles are assembled and glued along the pattern of the board and square timber.
3.2.14.1
Bamboo-based fiber composites
Reconstituted bamboo made from flaky bamboo bundles (bamboo fiberized veneer).
3.2.14.2
Caramelised bamboo scrimber
Reconstituted bamboo made from heat-treated bamboo bundles.
3.2.14.3
Dyed bamboo scrimber
Reconstituted bamboo made from dyed bamboo bundles.
3.2.14.4
Hot-pressed bamboo scrimber
The bamboo bundle is a recombined bamboo formed by hot-pressing and gluing the bamboo bundles along the pattern.
3.2.14.5
Cold molded and hot cured bamboo scrimber
The bamboo bundles are assembled according to the pattern, cold pressed and then heated to solidify and glued together to form a reconstituted bamboo.
3.2.15
Bamboo particle board
Bamboo particle board
A board made of bamboo scraps after drying, sizing, paving, and hot pressing.
[GB/T 36394-2018, definition 2.2.13]
3.2.15.1
Oriented bamboo strand board
A board made of bamboo narrow, long and thin flat shavings by sizing, directional paving and hot pressing.
[GB/T 36394-2018, definition 2.2.14]
3.2.16
Bamboo fiberboard
The bamboo material is processed into bamboo fiber for artificial board, which is dried, sizing, paving, and hot pressed.
[GB/T 36394-2018, definition 2.2.12]
3.2.17
Bamboo-plastic composite
Bamboo powder, bamboo fiber or bamboo scraps are fully mixed with thermoplastic resin and additives, and then processed by extrusion, molding or flat pressing.
Material or profile.
[GB/T 36394-2018, definition 2.2.11]
3.2.18
Bamboo-wood composites
Board squares and profiles made of bamboo, wood and man-made boards as the unit, formed by forming blanks, gluing and pressing.
[GB/T 36394-2018, definition 2.2.15]
3.3 Product term
3.3.1
Structural bamboo components
Load-bearing components mainly made of bamboo engineering materials, such as bamboo beams, bamboo columns, bamboo shear walls, bamboo purlins, etc.
3.3.2
Bamboo beam
A beam mainly made of bamboo engineering materials.
3.3.3
Bamboo column
The column is mainly made of bamboo engineering materials.
3.3.4
Bamboo truss
A truss mainly made of bamboo engineering materials.
3.3.5
Bamboo purlin
The purlin is mainly made of bamboo engineering materials.
3.3.6
Bamboo shear wall
Shear wall mainly made of bamboo engineering materials.
3.3.7
Bamboo landscape guardrail
The landscape guardrail is mainly made of bamboo engineering materials.
3.3.8
Bamboo moulding
Decorative wire made from bamboo.
3.3.9
Bamboo flooring
A strip-shaped paving material made of bamboo or bamboo man-made board as the main raw material.
[GB/T 36394-2018, definition 2.3]
3.3.9.1
Indoor bamboo flooring
Bamboo flooring that meets indoor use conditions, but cannot withstand long-term flooding or high humidity.
[GB/T 36394-2018, definition 2.3.4]
3.3.9.2
Outdoor bamboo flooring
Bamboo flooring with weather resistance and biodegradability resistance, suitable for outdoor use.
[GB/T 36394-2018, definition 2.3.5]
3.3.9.3
Laminated bamboo flooring
Floor made of laminated bamboo as the main raw material.
3.3.9.4
Bamboo scrimber flooring
Bamboo flooring made of restructured bamboo as the main raw material.
[GB/T 36394-2018, definition 2.3.3]
3.3.9.5
Flattened bamboo flooring
The surface layer and main components are made of bamboo spreading flat material.
3.3.9.6
Bamboo-wood composite flooring
The floor is composited with bamboo as the surface layer and wood or artificial board as the base material.
[GB/T 36394-2018, definition 2.3.6]
3.3.10
Bamboo furniture
Furniture made of bamboo and (or) bamboo man-made panels as the main material.
3.3.10.1
Indoor bamboo furniture
Bamboo furniture suitable for indoor use.
3.3.10.2
Outdoor bamboo furniture
It is weather-resistant and biodegradable, suitable for outdoor bamboo furniture.
3.3.10.3
Original bamboo furniture bamboo-culm furniture
Furniture made of bamboo tube or bamboo sheet as the main material.
3.3.10.4
Laminated bamboo furniture
Furniture made of laminated bamboo as the main material.
3.3.10.5
Bamboo scrimber furniture
Furniture made of reconstituted bamboo as the main material.
3.3.10.6
Bamboo-wood composite furniture
Furniture made of bamboo-wood composite material as the main material.
3.3.11
Bamboo stair
Stairs made of bamboo and (or) bamboo man-made panels as the main material.
3.3.12
Bamboo window
A window made of bamboo or bamboo man-made panels.
3.3.13
Bamboo door
Doors made of bamboo or bamboo wood-based panels.
3.3.14
Bamboo concrete form board
Take bamboo mats, bamboo curtains, etc. as the basic unit, the surface is covered with resin-impregnated adhesive film paper and/or wood veneer, and the assembly blank is glued and pressed.
Bamboo plywood for concrete construction.
[GB/T 36394-2018, definition 2.2.6.6]
3.3.15
Bamboo joist for concrete form board
A joist made of bamboo as the main raw material.
3.3.16
Bamboo scaffolding
Scaffolding made of bamboo as the main raw material.
3.3.17
Bamboo winding composite pipe
A tube made of bamboo as a base material, thermosetting resin as an adhesive, and a winding process.
3.4 Processing terms
3.4.1
Removing outer grain
The process of removing the part protruding from the outer wall of the bamboo tube.
3.4.2
Removing inner grain
The process of removing the part of the bamboo joint that protrudes from the inner wall of the bamboo tube.
3.4.3
Splitting open
The process of dividing the bamboo tube longitudinally.
3.4.4
Sawing open
The process of longitudinally splitting the bamboo tube into bamboo strips.
3.4.5
Sliver splitting
The processing process of splitting bamboo slices longitudinally into bamboo slices.
3.4.6
Bamboo woven mat weaving
Weaving bamboo curtains with bamboo strips, bamboo bundles, bamboo silk and other bamboo materials according to a certain weaving method.
3.4.7
Bamboo curtain weaving
The bamboo strips are woven into the processing process of the bamboo mat in a certain weaving method.
3.4.8
Defibering
The process of rolling and rolling bamboo materials such as bamboo chips, bamboo strips, and semi-circular bamboo tubes into bamboo bundles or fiberized bamboo veneers.
3.4.9
Bleaching
The process of using bleaching agent to treat the color of bamboo.
3.4.10
Thermal treating
Charring
The process of treating bamboo under high temperature, humidity and oxygen conditions.
3.4.11
Drying
With the help of drying media such as hot air, the bamboo is dried to the moisture content required by the process.
3.4.12
Pre-glue drying
The process of drying the bamboo without glue to the moisture content required by the process with the help of drying media such as hot air.
3.4.13
Post-glue drying
The process of drying the glued bamboo to the moisture content required by the process with the help of drying media such as hot air.
3.4.14
Gluing
The process of applying the specified adhesive to bamboo, commonly used methods include dipping, gluing and spraying.
3.4.15
Adhesive dipping
The process of dipping adhesive into bamboo strips, bamboo mats, bamboo curtains, bamboo bundles and other bamboo materials.
3.4.15.1
Glue spreading
The process of uniformly rolling the adhesive on the surface of bamboo veneers, bamboo strips, and bamboo flat panels.
3.4.15.2
Glue spraying
The process of spraying the adhesive evenly on the surface of bamboo fiber, bamboo shavings and other bamboo materials.
3.4.16
Forming
The process of evenly spreading bamboo strips, bamboo curtains, bamboo mats, bamboo bundles and other bamboo materials into slabs according to certain rules.
3.4.17
Plain pressing
The process of placing the bamboo strips horizontally, applying glue, and horizontally pressing them into a laminate with a wide line pattern.
Figure 7 Flat laminated board
3.4.18
Side pressing
The process of placing the bamboo strips vertically, applying glue, and pressing them laterally to form a laminate with a pattern of narrow lines.
Figure 8 Side laminated board
3.4.19
Hot-pressing
The process of pressing and heating the slab into a plate after a period of time.
3.4.20
Cold molding and hot curing
A process in which the slab is molded and then heated to solidify it.
3.5 Performance
3.5.1
Density
The mass of a substance per unit volume.
3.5.2
Absolute moisture content
The percentage of the moisture content of the material to the absolute dry mass of the material.
3.5.3
Modulus of rupture; MOR
The ratio of the bending moment of the material under the maximum static load to the flexural section modulus.
[GB/T 18259-2018, definition 2.81]
3.5.4
Modulus of elasticity; MOE
Within the elastic limit range, the ratio of stress to strain generated by a material due to load.
[GB/T 18259-2018, definition 2.82]
3.5.5
Strength weight ratio
The ratio of the strength and density of the material.
3.5.6
Tensile strength
The ratio of the maximum tensile load of the specimen to the loaded area of the specimen.
[GB/T 18259-2018, definition 2.85]
3.5.7
Compression strength
The ratio of the maximum compressive load of the specimen to the loaded area of the specimen.
[GB/T 18259-2018, definition 2.86]
3.5.8
Shear strength
The ratio of the maximum shear load of the specimen to the shear area of the specimen.
Note. According to the load form, it is divided into. tensile shear, pressure shear and horizontal shear.
[GB/T 18259-2018, definition 2.87]
3.5.9
Horizontal shear strength
The ratio of the maximum shear load of the specimen to the shear area of the specimen when the material is subjected to the maximum static load of the short beam shear.
3.5.10
Impact strength
The ratio of the energy consumed when the specimen is bent and broken under the action of impact load to the load area of the specimen.
[GB/T 18259-2018, definition 2.89]
3.5.11
Screw holding capability
Use the wood screw of the specified model, screw it into the board to a certain depth, and pull it out with the maximum pulling force required.
Note. It is divided into nail holding power on the board surface and nail holding power on the side of the board.
[GB/T 18259-2018, definition 2.79]
3.5.12
Internal bond strength
The ratio of the maximum load to the loaded area when the specimen fails under the action of the tensile load on the vertical plate surface.
[GB/T 18259-2018, definition 2.83]
3.5.13
Surface bond strength
The ratio of the maximum load of the surface layer of the test piece at a specified depth to the load area of the test piece under the action of the tensile load of the vertical plate surface.
[GB/T 18259-2018, definition 2.84]
3.5.14
Bonding strength
The ratio of the maximum load to the glued area required to cause failure of the interface between the adhesive and the adherend in the glued sample or its vicinity.
[GB/T 18259-2018, definition 2.80]
3.5.15
Boiling water resistance
A measure of the ability of a material to resist the effects of heat and humidity.
[GB/T 18259-2018, definition 2.71]
3.5.16
Water absorption
After the test piece is immersed in water at a certain temperature for a specified time, the percentage of its mass increase to the original mass.
[GB/T 18259-2018, definition 2.70]
3.5.17
Thickness swelling
After the specimen is immersed in water at a certain temperature for a specified period of time, the increase in thickness is the percentage of the original thickness.
[GB/T 18259-2018, definition 2.69]
3.5.18
Width swelling
After the specimen is immersed in water at a certain temperature for a specified period of time, the increase in its width is the percentage of the original width.
3.5.19
Dimensional stability
The ability of a material to maintain its original size and shape when the environmental conditions are changed.
[GB/T 18259-2018, definition 2.65]
3.5.20
Durability
Long-term resistance to damage by organisms (fungi, insects, etc.) or external environmental factors (high temperature, light, humidity, etc.).
[GB/T 18259-2018, definition 2.66]
3.5.21
Creep
Under certain environmental conditions, when a material is subjected to a constant external force, its deformation gradually increases with time.
[GB/T 18259-2018, definition 2.72]
3.5.22
Formaldehyde release; formaldehyde emission
Wood-based panels made from urea-formaldehyde resin and other formaldehyde series adhesives continuously emit formaldehyde to the outside world during the manufacturing, stacking and use processes
The phenomenon of gas.
Note. The methods for measuring the amount of formaldehyde released from wood-based panels include. large chamber method, small chamber method, 1m3 climate chamber method, gas analysis method, dryer method and perforation extraction method
Wait.
[GB/T 18259-2018, definition 2.73]
3.6 Defect term
3.6.1
Mildew
Changes in material and color due to the growth of mold and discoloration bacteria.
3.6.2
Decay
The phenomenon of bamboo tissue structure rot and disintegration caused by decomposition of bamboo cell walls by decaying bacteria or other microorganisms, including white rot, brown rot and
Soft rot etc.
3.6.3
Stain
Discoloration marks caused by mildew or decay of bamboo.
3.6.4
Worm hole
Holes and passages made by borers or their larvae in bamboo wood.
3.6.5
Delamination
Bamboo wood-based panels are the phenomenon of separation of glued surfaces caused by lack of glue or poor glue.
3.6.6
Blister blow; blister
Due to the failure of gluing, voids appear in the board and locally raised defects on the surface.
[GB/T 18259-2018, definition 2.45]
3.6.7
Crack split
The separation of bamboo fibers along the grain ...
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