GB/T 16777-2008Test methods for building waterproofing coatings (English PDF)

4.1 Test equipment

4.2 Test steps

4.2.1 Before the test, the mold frame, tools and coating shall be placed under the

standard test conditions for more than 24h.

4.2.2 Weigh the required amount of test sample. Ensure the final film thickness as (1.5

± 0.2)mm.

4.2.3 Check the appearance of the coating film. Cut the test piece according to the

provisions in Table 2 from the coating film with a smooth surface and no obvious

bubbles.

5.1 Test apparatus

5.1.1 Balance. resolution is 0.001g.

5.2 Test steps

Stir the sample (no diluent added for solid content test) well. Take (6±1)g of the sample

and pour it into a dry and weighed Petri dish (m0) and flatten the bottom. Immediately

weigh (m1).

5.3 Result calculation

The solid content is calculated according to formula (1).

5.4 Test report

The test report shall contain the following information.

6.1 Test apparatus

6.1.1 Electric blast oven. temperature control accuracy is ±2°C.

6.1.2 Aluminum plate. the thickness is not less than 2mm; the area is greater than

100mm×50mm; there is a small hole in the middle and upper part, which is convenient

for hanging.

6.2 Test steps

After stirring the sample evenly, apply the sample in 2~3 times according to the

requirements of the manufacturer (the interval between each time shall not exceed 24h)

on the cleaned aluminum plate. The coating area is 100mm×50mm.

6.3 Result evaluation

After the test, all test pieces shall not flow, slide, or drip. There are no dense bubbles on

the surface of the test piece.

6.4 Test report

The test report shall contain the following information.

7.1 Method A

7.1.1 Test apparatus

7.1.1.1 Tensile testing machine. the measured value is between (15-85)% of the range;

the indication accuracy is not less than 1%; the tensile speed is (5±1)mm/min.

7.1.1.5 High-strength adhesive. high-strength adhesive that hardly penetrates coating

films. Solvent-free epoxy resin is recommended.

7.1.2 Test steps

The mortar blocks, tools and coatings prepared before the test shall be placed under the

standard test conditions for more than 24h.

7.2 Method B

7.2.1 Test apparatus

7.2.1.1 Tensile testing machine. the measured value is between (15~85)% of the

measuring range; the indication accuracy is not less than 1%; the tensile speed is

(5±1)mm/min.

7.2.1.2 Electric blast oven. temperature control accuracy is ±2°C.

7.2.1.3 "8"-shaped metal mold. as shown in Figure 7; the middle is divided into two

halves by an insert.

7.2.2 Test steps

Before the test, the prepared mortar blocks, tools and coatings shall be placed under the

standard test conditions for more than 24h.

7.3 Result calculation

The bonding strength is calculated according to formula (2).

7.4 Test report

The test report shall contain the following information.

9.1 Test apparatus

9.1.1 Tensile testing machine. the measured value is between (15~85)% of the

measuring range; the indication accuracy is not less than 1%; the elongation range is

greater than 500mm.

9.1.2 Electric blast drying oven. temperature control accuracy is ±2°C.

9.2 Test steps

9.2.1 Untreated tensile properties

According to the requirements of Table 2, cut out the coating film into the dumbbell

type I test piece that meets the requirements of GB/T 528.Draw parallel marking lines

at a distance of 25mm.

9.2.2 Heat treatment tensile properties

Cut the coating film according to the requirements in Table 2 into six (120×25)mm

rectangular test pieces. Place them flat on the insulating material. Put them horizontally

into an electric blast oven that has reached the specified temperature.

9.2.5 Tensile properties after UV treatment

Place six (120×25mm rectangular test pieces) cut according to Table 2 flat on the glazed

tile. To prevent sticking, talcum powder can be sprinkled on the surface of the glazed

tile. Put the test piece into the UV box. The temperature of the space about 50mm away

from the surface of the test piece is (45±2)°C. Conduct constant temperature irradiation

for 240h. Take out and place under standard test conditions for 4h. Cut out the dumbbell

type I test piece that meets the requirements of GB/T 528.Carry out the tensile test

according to 9.2.1.

9.3 Result calculation

9.3.1 Tensile strength

The tensile strength of the test piece is calculated according to formula (3).

9.3.2 Elongation at break

The elongation at break of the test piece is calculated according to formula (4).

9.4 Test report

The test report shall contain the following information.

10.1 Test apparatus

10.1.1 Tensile testing machine. the measured value is between (15~85)% of the

measuring range; the indication accuracy is not less than 1%; the elongation range is

greater than 500mm.

10.2 Test steps

Cut the coating film, according to the requirements in Table 2, into right-angle tear test

pieces without a cut that meet the requirements of GB/T 529-1999.Use a thickness

gauge to measure the thickness of three points in the right-angle tear area of the test

piece.

10.3 Result calculation

The tear strength of the test piece is calculated according to formula (6).

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