This standard specifies the terms and definitions, specimen collection, sawing and cutting method of testing piece, basic requirements, moisture content testing, shrinkage testing method, density testing method, water absorbance testing method, parallel-to-grain compression strength and elastic modulus testing method, perpendicular-to-grain compression strength testing method, parallel-to-grain tensile strength and elastic modulus testing method, parallel-to-grain shearing strength testing method, bending strength and elastic modulus testing method and impact toughness testing method for bamboo used in building.
This standard is applicable to determination of physical and mechanical properties of bamboo used in building by adopting bamboo wall flaky specimens.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to (excluding amending errors in the text), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of the normative document is applicable. For undated references, the latest edition of the normative document applies.
GB 8170 Rules for Rounding Off of Numerical Values
JJG 139 Verification Regulation of Universal Tension and Compression Testing Machine
3 Terms and Definitions
For the purposes of this standard, the following terms and definitions apply.
3.1
Moisture content
The percentage of moisture mass of bamboo to total dry mass.
3.2
Fiber saturation point
The moisture content upon the cell wall saturation of bamboo.
3.3
Shrinkage
The percentage of dimension and volume shrinkage of dried wet bamboo with moisture content above fiber saturation point to the original dimension and volume.
3.4
Density
The mass of bamboo per unit volume.
3.5
Water absorbance
