Prefabricated concrete pavement structure
A concrete pavement, prefabricated assembly technology, applied to pavement, roads, roads and other directions paved with prefabricated blocks, can solve the problems of long construction period, low production efficiency, long seasonal downtime, etc., and achieve rapid assembly paving, installation Fast speed, good shear stress effect
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[0026] Example 1
[0027] A method for preparing high-strength antifreeze concrete, characterized in that the method includes the following steps:
[0028] Add 300 parts of cement, 60 parts of quicklime, 600 parts of aggregate, 2.5 parts of activator and 5.8 parts of amphoteric dispersant into 300 parts of water and stir and mix well, control the dispersion of the slurry at 18cm, the temperature at 45℃, and the stirring rate 650r / min;
[0029] Pour the material obtained in the above steps, and then send it to a static shutdown room with a temperature of 50°C and a humidity of 60°C for 3 hours after casting;
[0030] After the thickening, the material is demoulded and cut to obtain the required size of the green body, and then the green body
[0031] It is sent to the autoclave for steam curing for 2 hours, after leaving the autoclave, natural curing for one week to obtain the final high-strength anti-freeze concrete.
[0032] The preparation method of the amphoteric dispersant is as fol...
Example Embodiment
[0045] Example 2
[0046] Add 300 parts of cement, 60 parts of quicklime, 600 parts of aggregate, 1 part of activator and 8 parts of amphoteric dispersant to 300 parts of water and stir and mix, control the dispersion of the slurry at 18cm, the temperature at 45℃, and the stirring rate 650r / min;
[0047] Pour the material obtained in the above steps, and then send it to a static shutdown room with a temperature of 50°C and a humidity of 60°C for 3 hours after casting;
[0048] After the thickening, the material is demoulded and cut to obtain the required size of the green body, and then the green body is sent to the autoclave for steam curing for 2 hours, after leaving the autoclave, natural curing for one week to obtain the final high-strength antifreeze Concrete
[0049] The rest of the preparation is the same as in Example 1.
Example Embodiment
[0050] Example 3
[0051] Add 400 parts of cement, 10 parts of quicklime, 500 parts of aggregate, 2.5 parts of activator and 5.8 parts of amphoteric dispersant to 300 parts of water and stir and mix well, control the dispersion of the slurry at 18cm, the temperature at 45℃, and the stirring rate 650r / min;
[0052] Pour the material obtained in the above steps, and then send it to a static shutdown room with a temperature of 50°C and a humidity of 60°C for 3 hours after casting;
[0053] After the thickening, the material is demoulded and cut to obtain the required size of the green body, and then the green body is sent to the autoclave for steam curing for 2 hours, after leaving the autoclave, natural curing for one week to obtain the final high-strength antifreeze Concrete
[0054] The rest of the preparation is the same as in Example 1.
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