Road base material and preparation method thereof
A technology of road base and raw materials, applied in the direction of roads, roads, clay preparation equipment, etc., to achieve the effects of reducing usage, improving mechanical engagement, and improving compressive strength
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Embodiment 1
[0032] This embodiment provides a road base material, which is composed of the following raw materials in parts by weight: 24 parts of modified coal gangue, 20 parts of cement, 7 parts of silicon powder, 23 parts of gravel, and 2 parts of water reducing agent.
[0033] Modified coal gangue is prepared according to the following steps in the present embodiment:
[0034] Pulverize coal gangue through a 200-mesh sieve, raise the temperature from room temperature to 700 °C at a rate of 2 °C / min in an air atmosphere, keep it for 2 hours, and cool it down to room temperature at a rate of 15 °C / min to obtain activated coal gangue;
[0035] Add activated coal gangue into the ethanol solution and stir for 2 hours to obtain a solution A with a concentration of 10 g / L, add the silane coupling agent to the ethanol solution and ultrasonically for 0.5 hours to obtain a solution B with a concentration of 300 g / L, and mix solution A and solution B Stir at 60°C for 4h, wherein the volume rati...
Embodiment 2
[0046] This embodiment provides a road base material, which is composed of the following raw materials in parts by weight: 58 parts of modified coal gangue, 36 parts of cement, 9 parts of silicon powder, 10 parts of gravel, and 3 parts of water reducer.
[0047] Modified coal gangue is prepared according to the following steps in the present embodiment:
[0048] Pulverize coal gangue through a 200-mesh sieve, raise the temperature from room temperature to 750 °C at a rate of 10 °C / min in an air atmosphere, keep it warm for 2 hours, and cool it down to room temperature at a rate of 20 °C / min to obtain activated coal gangue;
[0049] Add the activated coal gangue into the ethanol solution and stir for 2 hours to obtain a solution A with a concentration of 15 g / L. Add the silane coupling agent to the ethanol solution and ultrasonicate for 1 hour to obtain a solution B with a concentration of 350 g / L. Mix solution A and solution B in Stir at 50°C for 6h, wherein the volume ratio ...
Embodiment 3
[0055] This embodiment provides a road base material, which is composed of the following raw materials in parts by weight: 36 parts of modified coal gangue, 10 parts of cement, 5 parts of silicon powder, 15 parts of gravel, and 2 parts of water reducing agent.
[0056] Modified coal gangue is prepared according to the following steps in the present embodiment:
[0057] Pulverize coal gangue through a 200-mesh sieve, raise the temperature from room temperature to 720°C at a rate of 5°C / min in an air atmosphere, keep it warm for 3 hours, and cool it down to room temperature at a rate of 18°C / min to obtain activated coal gangue;
[0058] Add activated coal gangue into the ethanol solution and stir for 3 hours to obtain a solution A with a concentration of 20g / L, add the silane coupling agent to the ethanol solution and sonicate for 0.5h to obtain a solution B with a concentration of 400g / L, and mix solution A and solution B Stir at 55°C for 2h, wherein the volume ratio of soluti...
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