Device and method for reinforcing recycled aggregate based on in-situ C-S-H production

A method for reinforcing a recycled aggregate based on in-situ C—S—H production, the method comprising:

• 1) sieving the recycled aggregate to remove waste particles in the recycled aggregate, and removing mud and incompletely stripped mortar on a surface of the recycled aggregate;
• 2) loading the recycled aggregate into a container after cleaning the recycled aggregate, and placing the container in a third chamber;
• 3) switching on a blast drier, switching off the blast drier after the recycled aggregate in the third chamber is dried, and then switching on a vacuum device to vacuumize the third chamber;
• 4) conveying a mixed solution of anhydrous ethanol, water and tetraethoxysilane (TEOS) into a spray device of the third chamber;
• evenly spraying the mixed solution onto the recycled aggregate by the spray device;
• and after a first period of soaking, discharging out the mixed solution and switching on the blast drier to dry the recycled aggregate;
• 5) switching on the vacuum device to vacuumize the third chamber;
• 6) conveying a calcium hydroxide solution into the spray device on the third chamber;
• evenly spraying the calcium hydroxide solution onto the recycled aggregate by the spray device;
• and after a second period of soaking, discharging out the calcium hydroxide solution and switching on the blast drier to dry the recycled aggregate.