Baking-free ecological brick made of waste subway engineering mud and making method of baking-free ecological brick
A technology of discarded mud and ecological bricks, applied in the field of civil engineering, can solve problems such as high moisture content and unfired bricks that cannot meet the use standards
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Embodiment 1
[0032] Take the following formula ratio raw materials according to the proportion:
[0033] 60 parts of waste mud from subway engineering, 13 parts of dehydrating agent, 25 parts of potassium dihydrogen phosphate solution, and 2 parts of borax; wherein, the dehydrating agent includes the following components by weight: 10 parts of perburned magnesium oxide, 2.8 parts of desulfurized fly ash, 0.2 parts of polyacrylamide.
[0034] According to the preparation method of preparing unfired ecological bricks from the waste mud of the subway project, the unfired ecological bricks were prepared:
[0035] 1) Add the dehydrating agent to the waste mud of the subway project, and mix it uniformly to prepare the mixture A;
[0036] 2) Add potassium dihydrogen phosphate aqueous solution and borax to the mixture A obtained in step 1), and mix uniformly to prepare mixture B, and the moisture content of the mixture B is 25%;
[0037] 3) Take the mixture B obtained in step 2), and use a brick...
Embodiment 2
[0046]Take the following formula ratio raw materials according to the proportion:
[0047] 67.5 parts of waste mud from subway engineering, 20 parts of dehydrating agent, 12 parts of potassium dihydrogen phosphate solution, and 0.5 part of borax; wherein, the dehydrating agent includes the following components by weight: 9.7 parts of overburned magnesium oxide, 10 parts of desulfurized fly ash , 0.3 parts of polyacrylamide.
[0048] According to the preparation method of preparing unfired ecological bricks from the waste mud of the subway project, the unfired ecological bricks were prepared:
[0049] 1) Add the dehydrating agent to the waste mud of the subway project, and mix it uniformly to prepare the mixture A;
[0050] 2) adding an aqueous solution of potassium dihydrogen phosphate and borax to the mixture A obtained in step 1), and mixing uniformly to prepare a mixture B, and the moisture content of the mixture B is 20%;
[0051] 3) Take the mixture B obtained in step 2...
Embodiment 3
[0060] Take the following formula ratio raw materials according to the proportion:
[0061] 80 parts of waste mud from subway engineering, 7.5 parts of dehydrating agent, 12 parts of potassium dihydrogen phosphate solution, and 0.5 part of borax; wherein, the dehydrating agent includes the following components by weight: 6 parts of overburned magnesium oxide, 1 part of desulfurized fly ash , 0.5 parts of polyacrylamide.
[0062] According to the preparation method of preparing unfired ecological bricks from the waste mud of the subway project, the unfired ecological bricks were prepared:
[0063] 1) Add the dehydrating agent to the waste mud of the subway project, and mix it uniformly to prepare the mixture A;
[0064] 2) Add potassium dihydrogen phosphate aqueous solution and borax to the mixture A obtained in step 1), and mix uniformly to prepare mixture B, and the moisture content of the mixture B is 30%;
[0065] 3) Take the mixture B obtained in step 2), and use a brick...
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