A multi-stage construction control method for emulsified asphalt cold recycled mixture
A technology of cold recycled mixture and emulsified asphalt, which is applied in the field of controlling the quality of the emulsified asphalt cold recycled layer and the construction progress of the overlying layer, and the construction control field of the emulsified asphalt cold recycled mixture, and can solve the problem that the cold recycled asphalt cannot be effectively controlled Problems such as construction quality and progress of the first floor, to achieve a reasonable effect of the control method
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Embodiment 1
[0026] Example 1. Beijing-Shenyang Expressway Auxiliary Road Emulsified Asphalt Cold Recycling Project
[0027] Indoor calibration:
[0028] (1) Mix the emulsified asphalt cold recycled mixture according to the designed gradation, form 8 Marshall test pieces, and compact 50 times on both sides.
[0029] (2) Put the molded specimen into a ventilated oven at 60°C for 48 hours.
[0030] (3) Take 4 test pieces after the end of the health preservation, double-sided repair 25 times, and demould after cooling to room temperature. Refer to the test method described in JTG E20-T0706 of "Test Regulations for Asphalt and Mixtures in Highway Engineering" to test the bulk density of the specimen, denoted as ρ 3 =2.238g / cm 3 .
[0031] (4) Take another 4 specimens, cool to room temperature and demould, the gross bulk density of the specimens is ρ 2 =2.198g / cm 3 .
[0032] (5) Calculate the initial density ρ of the specimen according to the parameters of the undamaged specimen 1 .
...
Embodiment 2
[0038] Example 2. Pinggu Huaxi Road Project
[0039] Indoor calibration:
[0040] (1) Mix the emulsified asphalt cold recycled mixture according to the designed gradation, form 8 Marshall test pieces, and compact 50 times on both sides.
[0041] (2) Put the molded specimen into a ventilated oven at 60°C for 48 hours.
[0042] (3) Take 4 test pieces after the end of the health preservation, double-sided repair 25 times, and demould after cooling to room temperature. Refer to the test method described in JTG E20-T0706 of "Test Regulations for Asphalt and Mixtures in Highway Engineering" to test the bulk density of the specimen, denoted as ρ 3 =2.282g / cm 3 .
[0043] (4) Take another 4 specimens, cool to room temperature and demould, the gross bulk density of the specimens is ρ 2 =2.264g / cm 3 .
[0044] (5) Calculate the initial density ρ of the specimen according to the parameters of the undamaged specimen 1 .
[0045] ρ 1 =m / (πr 2 h) = 2.081g / cm 3
[0046] On-site de...
Embodiment 3G107
[0050] Example 3. G107 National Highway Overhaul Project
[0051] Indoor calibration:
[0052] (1) Mix the emulsified asphalt cold recycled mixture according to the designed gradation, form 8 Marshall test pieces, and compact 50 times on both sides.
[0053] (2) Put the molded specimen into a ventilated oven at 60°C for 48 hours.
[0054] (3) Take 4 test pieces after the end of the health preservation, double-sided repair 25 times, and demould after cooling to room temperature. Refer to the test method described in JTG E20-T0706 of "Test Regulations for Asphalt and Mixtures in Highway Engineering" to test the bulk density of the specimen, denoted as ρ 3 =2.266g / cm 3 .
[0055] (4) Take another 4 specimens, cool to room temperature and demould, the gross bulk density of the specimens is ρ 2 =2.219g / cm 3 .
[0056] (5) Calculate the initial density ρ of the specimen according to the parameters of the undamaged specimen 1 .
[0057] ρ 1 =m / (πr 2 h) = 2.189g / cm 3
[0...
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