Asphalt bending creep test system test method - Database & Sql Blog Articles

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Kaixin micro test

Test probe P100-M3

Asphalt bending creep test system

experiment method

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1 According to the T 0703 asphalt mixture test piece preparation method, the prismatic test piece is made by the cutting method on the plate-shaped test piece formed by the wheel rolling. The size of the test piece should meet the requirements of length 250mm2mm, width 30mm2mm and height 35mm2mm, one piece 300mm300mm50mm The plate can usually cut 6 specimens.

2 Use the caliper to measure the dimensions of the test piece in the middle and two points. When the difference between the heights (or widths) of the two points is more than 2 mm, the test piece should be invalid. The width of the mid-span section is b and the height is h. The average value of the opposite sides is taken to be accurate to 0.1 mm.

3 Measure the physical properties such as density and void ratio of the test piece according to the method specified in this regulation.

4 Keep the test piece in a constant temperature water tank at the specified temperature for 1 h, and the distance between the test pieces should be no less than 10 mm. When performing the high temperature bending creep test of the asphalt mixture, the test piece must be placed flat on the supported flat glass.

5 Adjust the test machine environmental chamber to the specified temperature of 0.1 °C.

The asphalt bending creep test system accurately places the test beam beam test piece support

The distance between the fulcrums is determined to be 200 mm 0.5 mm, so that the upper pressing head and the lower pressing head steel rod are kept parallel and equidistant, and then the position is fixed. Two test pieces were randomly selected from a group of six test pieces, and the bending test was carried out according to the method of T 0715 of the present specification under the specified temperature conditions, and the loading rate was 50 mm/min. The breaking load P of the test piece was measured, and the average value was obtained. The load P0 of the bending creep test was taken as 10% of the breaking load.