Laboratory under artificial grass growth state

Laboratory under artificial grass growth state

1 in the laboratory tests, samples less in width (23 ± 2) ° C test temperature, place 3h tested. Field test the ambient temperature shall be subject to the outside temperature, the grass surface is not available 0 as the drops of water.
Two permanently attached to the soles barbell on the back of the shoe, artificial grass as close as possible on the sole part of the place around a nylon belt, nylon belt at the other end of the table mounted a rally, and then in the horizontal direction parallel to the ground slow, steady pulling tension table, record the start slip sneakers minimum force.
3 in three places in the field test in four directions, each direction measured perpendicular to the previous one; every where the average is taken in four directions where the friction coefficient of the friction coefficient of the stadium three the average; friction coefficient difference of the maximum take three.
Annex D (normative) wire grass n | Flexible Test 1].
1 Scope This method can be used in experiments or field Che dust test wire grass n | elasticity.
Two principle a metal foot model weighed repeatedly falls on the specimen, and then check the extent of the damage the sample, and whether permanent deformation.
Test conditions 3 laboratory temperature (23 2) ° C, less rare specimen temperature for 3h in the test tested take two implicit length of at least 125, width of at least 125 samples for testing.
4 Test Equipment
1 Repeat the weight from the sample from the upper (40 5) in height falls under the action of gravity, a frequency of (402) times / in;
2 - a (5 0.1) Kg of weight;
13 - a collision surface is formed by two gold * Li rods, each about 50 to 60, a thickness of at least 10, the hit | 0.1 from the edge of the leg 1, two metal rods to keep parallel to and a distance (38 2) hidden;
4 a sample carrier plate, perpendicular to the direction of the edge rod hook rlf move back and forth in the (402) within a distance (750 20) / in length movement.
5 Test Procedure
The specimen is clamped in the power punch rli device, note that the test material is not bent. Start machine (2000020) times pick attack. After a (30 l) in the recovery period after check whether there is any deformation of the specimen Yao.
6 Test Results
Note any significant deformation, distortion, especially to see that there are cracks or damage Merger.