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GB/T 40487-2021Structural bamboo glulam (English PDF)

结构用竹集成材

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

August 20, 2021

Implementation date

March 1, 2022

Scope

GB/T 40487-2021 is the English-translated version of 结构用竹集成材.

GB/T 40487-2021 is the Chinese national product standard for structural bamboo glulam, a material made by laminating and gluing graded bamboo strip laminates in the thickness direction, in horizontal or vertical form.

It sets the requirements for the adhesive, the bamboo strip laminates, the billet assembly and the finished glulam, and the test methods for size, density, moisture content, horizontal shear strength, tensile and compressive strength, peeling, shear strength of the adhesive layer, flexural performance and formaldehyde emission.

It also gives the inspection rules, with sampling and judgement, and the rules for marking, packaging, transport and storage. It applies to structural bamboo glulam made of laminated bamboo strips for indoor use, and other bamboo composite laminated timber may follow it by reference. It was issued on 20 August 2021 and has applied since 1 March 2022.

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Document preview — GB/T 40487-2021

National Standard of the People's Republic of China

ICS: 79.060.01
Classification: B 67

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
4.1 Adhesive
4.2 Bamboo strip laminate
4.3 Requirements for billet assembly
4.4 Bamboo Glulam
5 Detection method
5.1 Size
5.2 Density
5.3 Moisture content
5.4 Horizontal shear strength
5.5 Tensile strength
5.6 Compressive strength
5.7 Peeling
5.8 Shear strength of adhesive layer
5.9 Flexural performance
5.10 Formaldehyde emissions
6 Inspection rules
6.1 Inspection classification
6.2 Sampling methods and judging principles
6.3 Judgment Rule
7 Identification, packaging, transportation and storage
7.1 Identification
7.2 Packaging
7.3 Transportation and storage

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.

1 Scope

This document specifies the requirements, inspection methods, inspection rules, product identification, packaging, transportation and storage of bamboo laminated timber for structural use.

This document is applicable to structural bamboo laminated timber made of laminated bamboo strips used in indoor environments. Other bamboo composite materials The fabricated laminated bamboo laminated timber can be used as a reference.

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 2828.1-2012 Sampling inspection procedures by attributes Part 1: Batch inspection sampling searched by acceptance quality limit (AQL) plan

GB/T 17657-2013 Test method for physical and chemical properties of wood-based panels and facing wood-based panels

GB/T 19367-2009 Determination of the size of wood-based panels

GB/T 26899-2011 Glulam for structural use

GB/T 36394-2018 Bamboo Product Terminology

LY/T 2225-2013 laminated bamboo strips for structural use

3 Terms and definitions

The following terms and definitions defined in GB/T 36394-2018 apply to this document.

3.1 Structural bamboo glulam

The bamboo strip laminates (3.2) (which can be finger-joined or widened) divided by grade are laminated and glued in the thickness direction for structural materials.

Note: Including horizontal and vertical bamboo laminated timber.

3.2 Bamboo sliver lamination

The structure processed into a certain specification is made of laminated bamboo strips (3.3).

Note: Bamboo strip laminate is abbreviated as laminate, which includes surface processing, finger jointing and other reprocessing procedures.

3.3 Laminated bamboo sliver lumber

Bamboo strips (3.4) or bamboo strip curtains are mainly made of laminated blanks along the grain direction and hot-pressed gluing. [Source: GB/T 36394-2018, 2.2.7 and 2.2.10, with modifications]

3.4 Bamboo sliver

A thin unit made of bamboo slices cut longitudinally.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

LY/T 2225-2013

Similar standards

GB 18580-2025|GB/T 29899-2024|GB/T 44689-2024|GB/T 44690-2024|GB/T 17657-2022|GB/T 41547-2022

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