Concrete lightweight aggregate and preparation method thereof
A lightweight aggregate and concrete technology, which is applied in the field of waste resource utilization, can solve the problem of oil-based drill cuttings being difficult to handle, and achieve the effects of reducing preparation cost, low water absorption, and reducing the risk of diffusion and migration.
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Embodiment 1
[0038] In this embodiment, the concrete light aggregate is prepared from the following raw materials: 80 kg of oil-based drilling cuttings, 10 kg of municipal sludge, 0.8 kg of pore-forming agent, and 9.2 kg of water, wherein the pore-forming agent is carbon particles.
[0039] The preparation method is as follows:
[0040] (1) Dry oil-based drilling cuttings and municipal sludge in an oven at 105°C, then mix 80kg of oil-based drilling cuttings, 10kg of municipal sludge and 0.8kg of carbon particles evenly, and then ball mill to make raw meal. for 20min.
[0041] (2) Put the prepared raw material into the automatic ball forming machine, control the rotating speed of the pot of the ball forming machine to 20r / min, sprinkle water evenly during the rotation process, make the raw material wet and form a circle on the surface of the material A layer of water film continuously absorbs raw materials during the rolling process. After the ball forming, the spherical green body was ag...
Embodiment 2
[0048] The raw materials for preparing concrete light aggregates in embodiment 2 and embodiment 3 are as shown in table 2, and the preparation method is the same as embodiment 1, and the difference is that the pore-forming agent is carbon particles and wood chips in embodiment 2, and both The mass ratio is 2:1, and the pore forming agent in Example 3 is limestone powder.
[0049] Table 2 Composition of raw materials for preparing concrete lightweight aggregates in Examples 1-3 (kg)
[0050] Example
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