Method for testing and evaluating self-healing property of graphene microcapsule asphalt
An evaluation method and microcapsule technology, applied in the direction of applying repeated force/pulsation force to test material strength, measuring device, strength characteristics, etc., can solve the problem that the self-healing evaluation method of asphalt is not applicable to the self-healing evaluation of asphalt with graphene microcapsules and other issues to achieve an accurate evaluation
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Embodiment 1
[0025] A kind of graphene microcapsule asphalt self-healing test evaluation method, the specific operation process of described method is as follows:
[0026] Step 1: Under the test conditions of 25 ° C and 10 Hz, the strain scanning test was carried out on the base asphalt and 5% graphene microcapsule asphalt respectively with an 8 mm flat plate and a dynamic shear rheometer. The dynamic modulus-strain relationship curves of matrix pitch and graphene microcapsule pitch are plotted respectively on the ordinate (such as figure 1 As shown), the intersection point 4.3% of the two relationship curves is the strain threshold, and the value range of the control load is 0-4.3%;
[0027] Step 2: According to the result of Step 1, select 4% strain as the control load, and under the test conditions of 25°C and 10Hz, use an 8mm plate and use a dynamic shear rheometer to continuously load 5% graphene microcapsule asphalt fatigue test (such as figure 2 Shown), test the dynamic modulus o...
Embodiment 2
[0032] A kind of graphene microcapsule asphalt self-healing test evaluation method, the specific operation process of described method is as follows:
[0033] Step 1: Under the test conditions of 25 ° C and 10 Hz, the strain scanning test was carried out on the No. 70 matrix asphalt and 5% graphene microcapsule asphalt respectively by using an 8 mm flat plate and a dynamic shear rheometer, and then the strain was used as the abscissa, The dynamic modulus is the ordinate to plot the dynamic modulus-strain relationship curves of matrix pitch and graphene microcapsule pitch respectively (such as figure 1 As shown), the intersection point 4.3% of the two relationship curves is the strain threshold, and the value range of the control load is 0-4.3%;
[0034] Step 2: According to the result of Step 1, select 3% strain as the control load, and under the test conditions of 25°C and 10Hz, use an 8mm flat plate and use a dynamic shear rheometer to continuously load 5% graphene microcaps...
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