结构用单板层积材的日本农业标准(中英文)

JAPANESE AGRICULTURALSTANDARD

FOR

STRUCTURAL LAMINATED VENEER LUMBER

结构用单板层积材的日本农业标准

(Notification No. 1，433，Ministry of

Agriculture, Forestry and Fisheries, dated Sep.

14, 1988)

(The latest revision: Notification No. 989,

Ministry of Agriculture, Forestry and Fisheries,

dated Jul. 10, 2000)

农林水产省1988年9月14日1433号公告

最新版：农林水产省2000年7月10日989

号公告

(Scope of Application)

（适用范围）

Article 1. This standard applies to structural laminated veneer lumber.

条款1 本标准适用于结构用单板层积材

(Definition)

（定义）

Article 2. Terms given in the left column of the following table shall be defined as those set forth respectively in the right column:

条款2，下表中左栏的术语由相对应的右栏来阐明：

(Standards)

（标准）

Article 3. Standards for the structural laminated veneer lumber shall be as follows:

条款3 结构用单板层积材的标准如下：

3. Methods of testing

测试方法

(1)Immersion delamination test

水浸剥离试验

a.Preparation of test pieces

试样的准备

Two square test pieces with a side of 75mm shall be prepared from each sample lumber (if the width of sample lumber is less than 75mm, rectangular test piece with the said width and 75mm in length shall be prepared).

从每个样品板上取2块边长为75毫米的正方形试样，（如果样品板的宽度不足75毫米，那么试样可以为长方形，其长度为75毫米而宽度为样品板的宽度。

b.Methods of testing

测试方法

Test pieces, after being immersed in water of room temperature for 24 hours at a temperature of 60±3℃ with good ventilation.

把两片测试块在室温下浸泡24小时以后放在60±3℃的环境中并保持良好通风。

c.Standard requirements for test pieces

测试件合格需要达到的标准

Ratio of delamination on 4 sides of test pieces shall not be more than 10% in length and the length of delamination on the same glue line (except the delamination less than 3 mm in length, so to be understood hereinafter) shall not be more than 1/3 of the length of the said glue line.

测试件四个侧面的剥离率在长度上不得超过10%并且同一胶合层的剥离长度不得有超过1/3胶合层长度的情况存在。

Note: Ratio of delamination shall be calculated by the following equation.

注：剥离率应用以下公式计算。

Total length of delamination on 4 sides

Ratio of delamination = -----------------------------------------------------× 100

(%) Total length of glue line on 4 sides

四个侧面的剥离长度之和

剥离率= -----------------------------------------------------× 100

(%) 四个侧面的总的胶合层的长度

(2)Boiling water soak delamination test

滚开水浸渍剥离试验

a. Preparation of test pieces 试验材料的准备

The same as (1) a 跟（1）a相同

b. Method of testing 测试方法

Test pieces, after being immersed in boiling water for 5 hours, shall be immersed in water of room temperature for 1 hour. Then the test pieces shall be dried in a thermostatic drier for 24 hours at a temperature of 60±3℃ with good ventilation

试样，在滚开水中浸泡5个小时以后，再在室温水中浸泡1个小时。然后试样要放进带温度调节装置的干燥机，，在60±3℃中干燥24小时，并保持良好通风。

c. Standard requirements for test pieces 测试合格的标准

The same as (1)c 跟（1）c相同。

(3) Vacuum/pressure treatment test （3）真空/压力处理试验

a. Preparation of test pieces a. 测试件的准备

The same as (1)a 与（1）a相同

b. Method of testing b. 测试方法

Test pieces are immersed in water of room temperature, vacuum of 508mmHg to 635 mmHg is applied for 30 minutes, and then increased pressure of 5.2±3 kgf/cm² is applied for 2 hours.

After that, the test pieces shall be dried in a thermostatic drier for 24 hours at a temperature of 70±3℃ with good ventilation.

测试件浸泡在室温的水中，用508毫米汞柱到635毫米汞柱的气压抽30分钟真空，然后用5.2±3公斤力/平方厘米的压力压2个小时。做过以后，把试样放入70±3℃的干燥机中，在通风良好的情况下干燥24小时。

c. Standard requirements for the pieces. 试样合格标准

The same as (1)c 与（1）c 相同

（4）Horizontal shear test

水平剪力试验

a.Preparation of test pieces

试样的准备

Test pieces shall be prepared from each sample lumber in the following manner: Two test pieces of rectangular shape for flatwise direction test (laminated direction of veneer and loading direction shall be the same, and so to be understood hereinafter.) shall be prepared.

Each test pieces shall have a width of 40 mm and a length of 6 times the thickness of sample lumber. In addition, two test pieces of rectangular shape for edgewise direction test (laminated direction of veneers shall be perpendicular to the loading direction, and so to be understood hereinafter) shall be prepared. Each test pieces shall have a width equal to the thickness of sample lumber and a length of 6 times the thickness of sample lumber. As to the sample lumber with a thickness of not less than 40mm, however, the lumber shall be shaved