A rapid method for evaluating the storage stability of modified asphalt
A technology for storage stability and modified asphalt, which is applied in thermal analysis of materials, instruments, thermal conductivity of materials, etc., can solve the problems of unusable modified asphalt, unqualified storage stability, and affecting the performance of modified asphalt, and achieves a solution Unity problems, intuitive results, and easy operation
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Embodiment 1
[0013] Mix base asphalt with 4% SBS (styrene-butadiene-styrene block copolymer) at 180°C with high shear equipment for 60 minutes to prepare polymer modified asphalt A, use base asphalt with 4% SBS (styrene-butadiene-styrene block copolymer) and 0.5% stabilizer (containing dimorpholine disulfide 35%, lead oxide 50%, carbon black 15%), polymer modified Asphalt B, take modified asphalt in a hot melt state and inject it into a test tube (the length of the test tube is 20cm, and the diameter of the tube is 25mm), place it in an oven at 163°C for 48 hours, take out the test tube sample and cool it immediately, and then separate the asphalt from the test tube. And the modified asphalt was divided into three parts of equal length, and the upper and bottom modified asphalt were taken to measure the thermal conductivity and thermal diffusivity with a thermal constant analyzer. The data obtained from the test are shown in Table 1. From the thermophysical constant method, the thermal con...
Embodiment 2
[0017] Mix base asphalt and 3% montmorillonite at 180°C with high-shear equipment for 60 minutes to prepare inorganic material modified asphalt C, use base asphalt and 3% montmorillonite, and add 0.5% stabilizer ( Calcium oxide) to prepare inorganic material modified asphalt D, take the modified asphalt in a hot melt state and inject it into a test tube (the length of the test tube is 20cm, and the diameter is 25mm), and place it in an oven at 163°C for 48h. After taking out the test tube sample, immediately After cooling, the asphalt was separated from the test tube, and the modified asphalt was divided into three parts of equal length. The modified asphalt on the upper part and the bottom part were taken to measure the thermal conductivity and thermal diffusivity with a thermal constant analyzer. The data obtained from the test are shown in Table 2. From the thermophysical constant method, we can conclude that the difference in thermal conductivity and thermal diffusivity is ...
Embodiment 3
[0021] Mix base asphalt with 8% nano-calcium carbonate at 180°C with high-shear equipment for 60 minutes to prepare nanomaterial-modified asphalt E, and use base asphalt with 8% nano-calcium carbonate and 0.5% stabilizer to prepare nano-materials Material modified asphalt F, take the modified asphalt in hot melt state and pour it into a test tube (the length of the test tube is 20cm, the diameter of the tube is 25mm), put it in an oven at 163°C for 48h, take out the sample of the test tube and cool it immediately, and then make the asphalt and The test tubes were separated, and the modified asphalt was divided into three parts of equal length. The upper and lower modified asphalt were taken to measure the thermal conductivity and thermal diffusivity with a thermal constant analyzer. The data obtained from the test are shown in Table 3. From the thermal physical constant test method, we get that the difference in thermal conductivity and thermal diffusivity is greater than 5%, w...
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