GB/T 18173.2-2014Polymer water-proof materials - Part 2: waterstop (English PDF)

3.1 Classification

3.1.1

The waterstops can be divided into three categories according to the applications.

3.1.2

The waterstops can be divided into two categories according to the structure type.

3.2.2 Marking examples

Example 1.Composite waterstops with steel edges for construction joints, which are 300mm wide and

8mm thick, shall be marked as. S-FG-300 × 8.

4.1 Dimensional tolerances

The schematic diagram for the waterstop structure is shown in Figure 1.The dimensional tolerances of the waterstop shall conform to the provisions of

Tables 1 and 2.

4.2 Appearance quality

4.2.1

The deviation of waterstop's center hole is not allowed to exceed 1/3 of the design value of the wall thickness.

4.2.2

It is not allowed to have cracks and sponge-like defects on the waterstop surfaces.

4.3 Physical properties

4.3.1

The physical property requirements and corresponding test methods for the rubber materials of waterstops shall conform to the provisions of Table 3.

4.3.2

The indicator of the tensile strength at the joints of the waterstop shall not be less than 80% of the specified value in Table 3 (except the site construction joints).

5.1 Dimensional tolerances

USE a measuring tool to measure the specifications. The thickness and width shall be respectively accurate to 0.05mm and 1mm. TAKE 1m of product at random as sample (for the waterstop processed by molding vulcanization, at least one joint shall be included). TAKE four points in the symmetrical position on the product surface from both ends for measurement. TAKE the arithmetic mean value of the results.

5.3 Physical properties

5.3.1 Test piece preparation and conditioning

CUT an enough length of product passing the specification and appearance quality inspections as required by the test. CONDUCT the test piece preparation according to the provisions of GB/T 2941.PLACE the test pieces in standard status for 24h. CONDUCT the test according to the requirements of

Table 3.

5.3.6 Brittle temperature

The brittle temperature determination shall be carried out according to the provisions of GB/T 15256.

5.3.7 Hot air ageing

The hot air ageing test shall be carried out according to the provisions of GB/T 3512.

5.3.8 Ozone ageing

The ozone ageing test shall be carried out according to the provisions of GB/T 7762.

5.3.9 Rubber and metal adhesion properties

5.3.9.1 Sample dimensions

As shown in Figure 2, USE finished products as test pieces during the rubber and metal adhesion test. The test pieces shall be (20 ± 1) mm wide. The adhesion length of rubber and steel plates l shall be the actual dimensions of the product.

Figure 2 Test Piece for Rubber and Metal Adhesion

5.3.9.2 Test procedures

Respectively CLAMP the metal end and rubber end of the test piece on the upper and lower chucks of the testing machine. STRETCH at a speed of (50 ±

5) mm/min. RECORD the damage type.

6.1 Inspection classification

6.1.1 Exit-factory inspection

6.1.1.2 Inspection items

For the dimensional tolerances and appearance quality, CONDUCT exit-factory inspection. For the hardness, tensile strength, elongation at break and tear strength, CONDUCT exit-factory inspection batch by batch.

6.1.2 Type inspection

All the technical requirements for type inspection items are listed in this Part.

CONDUCT the type inspection under one of the following circumstances.

6.1.3 Periodic inspection

Under normal circumstance, CONDUCT the ozone ageing inspection at least once a year. CONDUCT the brittle temperature inspection at least once every six months. For the compression set, hot air ageing, rubber and metal adhesion properties (only applicable to Type FG composite waterstops with steel edges) and rubber and cord fabric adhesion strength (only applicable to Type JX composite waterstops with cord fabric), CONDUCT the inspections once every quarter.

6.2 Determination rules

6.2.1

If the dimensional tolerances, appearance quality and various physical property indicators of rubber materials comply with the technical requirements, the products will be determined as conforming.

7.1

USE appropriate materials not affecting the quality of waterstops for packaging.

7.2

Each packaging shall have a product certificate, and shall be indicated with product name, product marking, trademark, production license number, manufacturing plant's name and address, production date and product standard number.

7.4

Under the condition of complying with the provisions of Section 7.3, the product properties shall conform to the provisions of this Part within 12 months since the date of production.

GB 18241.1-2014 | GB/T 18173.3-2014 | GB 18173.1-2012 | GB/T 21538-2026 | […]