GB 15763.1-2001Safety glazing materials in building Fire-resistant glass (English PDF)

3.1 Integrity of fire-resistant

Under standard fire resistance test conditions, the ability of a building partition component to prevent flame penetration or the appearance of flames on the backside of the fire for a certain period of time, when one side is exposed to fire.

3.2 Insulation of fire-resistant

Under standard fire resistance test conditions, the ability of building partition components to prevent the temperature of the back-fire surface from exceeding the specified value within a certain period of time, when a certain side is exposed to fire.

3.3 Irradiance

Under standard fire resistance test conditions, the thermal radiation illumination value at a certain distance and within a certain period of time from the back-fire surface of the glass.

4.1 Category of fire-resistant glass by structure

4.1.1 Composite fire-resistant glass (FFB). A special glass composed of two or more

layers of glass or a layer of glass and organic materials, AND meets the corresponding fire-resistant grade requirements.

4.1.2 Single piece fire-resistant glass (DFB). Special glass composed of a single layer

of glass and meeting the requirements of the corresponding fire resistance grade.

4.2 Fire-resistant glass is divided into three categories. A, B, C according to fire resistance.

Category A fire-resistant glass. Fire-resistant glass that meets both fire-resistant integrity and fire-resistant and thermal insulation requirements.

Category B fire-resistant glass. Fire-resistant glass that meets both fire-resistant integrity and irradiance requirements.

Category C fire-resistant glass. Fire-resistant glass that meets fire-resistant integrity requirements.

The above three categories of fire-resistant glass can be divided into level I, level II, level III, level IV according to the fire resistance grade.

4.3 Marking examples

A piece of composite fire-resistant glass, which has a nominal thickness of 15 mm, fire resistance category A, fire resistance level I, is marked as follows.

5.10 Mechanical properties

5.10.1 Impact resistance of composite fire-resistant glass

Carry out the test according to 6.9.After the test, the glass shall meet any of the following a) and b).

a) The glass is not damaged.

b) If the glass is damaged, the steel ball shall not penetrate the specimen.

5.10.2 Impact resistance of single piece fire-resistant glass

Carry out the test according to 6.9.The glass shall not be broken after the test.

5.10.3 Fragment status of single piece fire-resistant glass

When tested in accordance with 6.10, the number of fragments in each sample within a

50 mm × 50 mm area shall exceed 40; the fragment crossing the area boundary is counted as half piece. A small number of long strip fragments are allowed, but their length shall not exceed 75 mm, meanwhile the ends are not blade-shaped. The angle formed by the long strip fragment extending to the edge of the glass and the edge of the glass shall not be greater than 45°.

6.1 Measurement of size and thickness

Dimensions are measured using a steel ruler or steel tape measure, which has a minimum graduation of 1 mm. The thickness is measured at the midpoint of the four sides of the glass, using a micrometer that complies with GB 1216 or an instrument of equivalent precision. The measurement results are expressed as the average of the four points; the value is accurate to 0.1 mm.

6.2 Appearance quality

Under good natural light and diffuse lighting conditions, conduct a visual inspection at a distance of 600 mm from the front of the glass.

6.3 Fire resistance

Mount the entire piece of fire-resistant glass in a fixed frame, to perform a fire resistance test according to GB 12513.The height of the fire-resistant glass shall not be less than

1100 mm; the width shall not be less than 600 mm. The specimen shall be installed vertically.

The fixed frame and installation method used in the test shall be the same as the structure used in the actual project; the structure and installation method of the fixed frame shall be recorded in drawings or other equivalent methods.

6.4 Curvature

The glass shall be placed vertically; the ruler shall be placed horizontally close to the surface of the specimen for measurement. In the case of a bow, it is expressed as the percentage of the height of the arc to the length of the chord. In the case of a wave, it is expressed as the percentage of the ratio -- of the height from the trough to the crest TO the height from the crest to the crest (or from trough to trough).

6.5 Transmittance

Inspection shall be carried out according to the method specified in Article 3.1 of GB/T

2680-1994.

6.6 Heat resistance of composite fire-resistant glass

6.6.1 Use 3 specimens which have dimensions of 300 mm × 300 mm. Before the test, the specimen shall be placed vertically at room temperature for more than 6 hours, to check the appearance quality and record the defects in detail.

6.6.2 Place the specimen vertically into the constant temperature box. Maintain a

constant temperature of 50 °C ± 2 °C for 6 hours. Then take it out.

6.6.3 Place the removed specimen vertically for more than 6 hours at room temperature, to check its appearance quality and light transmittance.

6.6.4 After the test, if the appearance quality of 3 specimens meets the requirements, it is considered qualified; if the appearance quality of only 1 specimen meets the requirements, it is deemed unqualified. When 2 specimens meet the requirements, 3 more new specimens are tested. When all 3 specimens meet the requirements, they are qualified.

6.7 Cold resistance of composite fire-resistant glass

6.7.1 Use 3 specimens which have dimensions of 300 mm × 300 mm. Before the test, the specimen shall be placed at room temperature for more than 6 hours, to check the appearance quality and record the defects in detail.

6.7.2 Place the specimen into the cryogenic box. Keep it at a constant temperature of -

20 °C ± 2 °C for 6 hours, before taking it out.

6.7.3 Place the removed specimen vertically at room temperature for more than 6 hours, to check its appearance quality and transmittance.

6.7.4 After the test, if the appearance quality of 3 specimens meets the requirements, it is considered qualified; if the appearance quality of only 1 specimen meets the requirements, it is deemed unqualified. When 2 specimens meet the requirements, 3 more new specimens are tested. When all 3 specimens meet the requirements, they are qualified.

6.8 UV radiation resistance of composite fire-resistant glass

Take 3 specimens and conduct the test according to the method specified in Article 5 of

GB/T 5137.3-1996.After the test, if all 3 specimens meet the requirements, they are qualified; if only 1 specimen meets the requirements, they are unqualified. When 2 specimens meet the requirements, 3 more new specimens are tested. When all 3 specimens meet the requirements, they are qualified.

6.9 Impact resistance

6.9.1 Use 6 specimens which have dimensions of 610 mm × 610 mm. Keep it in a room at 23 °C ± 5 °C for 4 hours before testing. Perform the test immediately after taking it out.

6.9.2 Place the specimen on the frame shown in Figure 1.When the raw glass used for fire-resistant glass has different thicknesses, the thin side shall face the impact body.

6.9.3 Use a steel ball which has a mass of 1040 g ± 10 g and a smooth surface. Place it at a height of 1000 mm from the surface of the specimen. Let it fall freely from a stationary state to within 25 mm from the center of the specimen without external force.

Observe the damage state. A specimen can only be impacted once.

6.9.4 After the test, if 5 or more of the 6 specimens meet the requirements, they will be considered qualified. If 3 or less of the 3 specimens meet the requirements, they will be considered unqualified. When 4 specimens meet the requirements, 6 new specimens will be tested additionally. When all 6 specimens meet the requirements, they are qualified.

the products shall be used.

7.3 Judgement rules

If the size, thickness deviation, appearance quality or curvature of composite fire- resistant glass or single-piece fire-resistant glass is equal to or greater than the quantity for rejection in Table 10, THEN, the size, thickness deviation, appearance quality or curvature of the batch of products will be considered unqualified.

Other properties of fire-resistant glass shall also comply with corresponding provisions.

Otherwise, the performance is considered unqualified.

If any of the above items is unqualified, the batch of products will be considered unqualified.

8.1 Signs

8.1.1 Product signs

There shall be an indelible product mark, company name or trademark on the lower right corner of each product.

8.1.2 Packaging sign

Each packaging box shall be marked with the type, specifications, fire resistance level, quantity, receiver, name and address of the manufacturer, date of manufacture of the products packaged in the box. Meanwhile it shall be marked with "Handle with care, avoid moisture, keep upward".

8.2 Product user instruction

When the product leaves the factory, it shall be accompanied by a product user instruction, which clearly clarifies the place where the product is used, installation requirements, main performance of the product, etc.

9.1 Packaging

9.1.1 The product shall be packed in wooden boxes or other packaging boxes. The glass shall be placed vertically in the box. Each piece of glass shall be wrapped with plastic cloth or paper. A light soft material that will not easily cause scratches or other appearance defects on the glass shall be filled, between the glass and the packaging box.

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