Cement stabilizing mixture doped with household garbage incineration ash and preparation method thereof
By mixing cement, coarse aggregate, fine aggregate and sintered ash slag in a specific proportion and mixing secondary water, cement stable mixture with good mechanical properties is prepared, which solves the problem of low product added value of the incinerator slag treatment method, and effectively utilizes and reduces the cost of sintered ash slag.
Patent Information
- Application Number
- CN202411855931.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-03-25
AI Technical Summary
The prior art products have low added value for the treatment methods of incinerator slag, making it difficult to effectively utilize sintered ash slag, reduce costs and ensure quality.
By mixing cement, coarse aggregate, fine aggregate and sintered ash slag in a specific proportion, mixing it in a mixing equipment once and adding water for secondary mixing, a cement stable mixture with good mechanical properties is prepared.
The effective utilization of sintered ash slag is achieved, the production cost is reduced, and the mechanical properties and quality of cement stable mixture are improved.
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of building materials, in particular to a cement-stabilized mixture mixed with domestic waste incineration ash and a preparation method thereof. Background Art
[0002] Incineration slag is mainly composed of molten slag, glass, ceramics, bricks, waste concrete blocks, stones, etc. It is a heterogeneous mixture.
[0003] At present, the main existing treatment methods for converter slag are used for foundation backfill, road paving, cement raw materials, water purifiers and steel slag waste, etc., and the added value of the products of this treatment method is relatively low.
[0004] Based on this, the present invention provides a cement-stabilized mixture mixed with domestic waste incineration ash and a preparation method thereof to solve the above-mentioned technical problems. Summary of the invention
[0005] The object of the present invention is to provide a cement-stabilized mixture mixed with domestic waste incineration ash and a preparation method thereof. The prepared cement-stabilized mixture mixed with domestic waste incineration ash has good mechanical properties and can realize the utilization of sintered ash, thereby reducing costs and effectively ensuring its quality.
[0006] To achieve the above object, the present invention provides the following technical solutions:
[0007] The first aspect of the present invention provides a cement-stabilized mixture mixed with domestic waste incineration ash, which is composed of the following raw materials in parts by weight: 60 to 200 parts of cement, 20 to 60 parts of coarse aggregate, 10 to 80 parts of fine aggregate, 50 to 100 parts of sintered ash and 160 to 170 parts of water.
[0008] The present invention is further configured as follows: the cement is selected from P.C42.5 grade slow-setting composite silicate cement.
[0009] The present invention is further configured as follows: the coarse aggregate is formed by mixing limestone crushed stone with a particle size of 20 to 30 mm, limestone crushed stone with a particle size of 10 to 18 mm, and limestone crushed stone with a particle size of 6 to 8 mm in a mass ratio of 1 to 4: 0.65 to 1.2: 1 to 3: 1.
[0010] The present invention is further configured as follows: the fine aggregate is limestone chips with a particle size of 1 to 4 mm.
[0011] The present invention is further configured as follows: the particle size of the sintered ash is 1 to 10 mm.
[0012] The present invention is further configured as follows: the mud content in the sintered ash is ≤1.7%, and the needle-like content is ≤5.9%.
[0013] The second aspect of the present invention: also provides a method for preparing the above-mentioned cement-stabilized mixture mixed with domestic waste incineration ash, comprising the following steps:
[0014] Step 1: Accurately weigh cement, coarse aggregate, fine aggregate, sintered ash and water for later use;
[0015] Step 2: Put cement, coarse aggregate, fine aggregate and sintered ash into a mixing device for primary mixing, add water after mixing, perform secondary mixing, and discharge to obtain a cement-stabilized mixture.
[0016] The present invention is further configured as follows: in the step 2, the rotation speed of the primary mixing is 50 to 70 r / min, and the mixing time is 15 to 20 s.
[0017] The present invention is further configured as follows: in the step 2, the rotation speed of the secondary mixing is 50 to 70 r / min, and the mixing time is 3 to 5 min.
[0018] Compared with the prior art, the present invention has the following beneficial effects:
[0019] In the present invention, cement, coarse aggregate, fine aggregate, sintered ash and water are used as raw materials. The cement, coarse aggregate, fine aggregate and sintered ash are put into a mixing device for primary mixing, and water is added thereto after mixing for secondary mixing, and the material is discharged to obtain a cement stabilized mixture. The cement stabilized mixture mixed with domestic waste incineration ash prepared by the present invention has good mechanical properties, and can realize the utilization of sintered ash, reduce costs, and effectively ensure its quality. The cement stabilized mixture mixed with domestic waste incineration ash provided by the present invention and the preparation method thereof have a broader market prospect and are more suitable for promotion. DETAILED DESCRIPTION
[0020] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0021] Example 1
[0022] The present embodiment provides a cement-stabilized mixture mixed with domestic waste incineration ash, which is composed of the following raw materials in parts by weight: 60 parts of cement, 20 parts of coarse aggregate, 10 parts of fine aggregate, 50 parts of sintered ash and 160 parts of water.
[0023] Among them, the cement used is P.C42.5 grade slow-setting composite silicate cement.
[0024] In this embodiment, it should be noted that the cement was purchased at the county Yizhou Cement Co., Ltd. at its own expense.
[0025] The coarse aggregate is a mixture of 20 mm limestone crushed stone, 10 mm limestone crushed stone and 6 mm limestone crushed stone in a mass ratio of 1:0.65:1:1.
[0026] The fine aggregate is limestone chips with a particle size of 1 mm.
[0027] In this embodiment, it should be noted that the limestone crushed stones and limestone chips were purchased from Shandong Zhanfei Building Materials Co., Ltd.
[0028] The particle size of the sintered ash is 1 mm.
[0029] Furthermore, the mud content in the sintered ash is ≤1.7%, and the needle-like content is ≤5.9%.
[0030] In this embodiment, it should be noted that the sintered ash was purchased from China Energy Conservation (Linyi) Environmental Protection Energy Co., Ltd.
[0031] In addition, this embodiment also provides a method for preparing the above-mentioned cement-stabilized mixture mixed with domestic waste incineration ash, comprising the following steps:
[0032] Step 1: Accurately weigh cement, coarse aggregate, fine aggregate, sintered ash and water for later use;
[0033] Step 2: Put cement, coarse aggregate, fine aggregate and sintered ash into a mixing device for primary mixing, add water after mixing, perform secondary mixing, and discharge to obtain a cement-stabilized mixture.
[0034] The mixing speed is 50 r / min and the mixing time is 15 s.
[0035] The speed of secondary mixing is 50r / min and the mixing time is 3min.
[0036] Example 2
[0037] The preparation method of the cement-stabilized mixture mixed with domestic waste incineration ash provided in this embodiment is basically the same as that in Example 1, except that: the specific raw material composition and the specific preparation method of the cement-stabilized mixture mixed with domestic waste incineration ash in this embodiment are different; the specific raw material composition and the specific preparation method of the cement-stabilized mixture mixed with domestic waste incineration ash in this embodiment are as follows:
[0038] A cement-stabilized mixture mixed with domestic waste incineration ash is composed of the following raw materials in parts by weight: 130 parts of cement, 40 parts of coarse aggregate, 45 parts of fine aggregate, 75 parts of sintered ash and 165 parts of water.
[0039] Among them, the cement used is P.C42.5 grade slow-setting composite silicate cement.
[0040] In this embodiment, it should be noted that the cement was purchased at the county Yizhou Cement Co., Ltd. at its own expense.
[0041] The coarse aggregate is a mixture of 25 mm limestone crushed stone, 14 mm limestone crushed stone and 7 mm limestone crushed stone in a mass ratio of 2:0.9:2:1.
[0042] The fine aggregate is limestone chips with a particle size of 2 mm.
[0043] In this embodiment, it should be noted that the limestone crushed stones and limestone chips were purchased from Shandong Zhanfei Building Materials Co., Ltd.
[0044] The particle size of the sintered ash is 5 mm.
[0045] Furthermore, the mud content in the sintered ash is ≤1.7%, and the needle-like content is ≤5.9%.
[0046] In this embodiment, it should be noted that the sintered ash was purchased from China Energy Conservation (Linyi) Environmental Protection Energy Co., Ltd.
[0047] In addition, this embodiment also provides a method for preparing the above-mentioned cement-stabilized mixture mixed with domestic waste incineration ash, comprising the following steps:
[0048] Step 1: Accurately weigh cement, coarse aggregate, fine aggregate, sintered ash and water for later use;
[0049] Step 2: Put cement, coarse aggregate, fine aggregate and sintered ash into a mixing device for primary mixing, add water after mixing, perform secondary mixing, and discharge to obtain a cement stabilized mixture.
[0050] The speed of the first mixing is 60 r / min and the mixing time is 17 s.
[0051] The speed of secondary mixing is 60r / min and the mixing time is 4min.
[0052] Example 3
[0053] The preparation method of the cement-stabilized mixture mixed with domestic waste incineration ash provided in this embodiment is basically the same as that in Example 1, except that: the specific raw material composition and the specific preparation method of the cement-stabilized mixture mixed with domestic waste incineration ash in this embodiment are different; the specific raw material composition and the specific preparation method of the cement-stabilized mixture mixed with domestic waste incineration ash in this embodiment are as follows:
[0054] A cement stabilized mixture mixed with domestic waste incineration ash is composed of the following raw materials in parts by weight: 200 parts of cement, 60 parts of coarse aggregate, 80 parts of fine aggregate, 100 parts of sintered ash and 170 parts of water.
[0055] Among them, the cement used is P.C42.5 grade slow-setting composite silicate cement.
[0056] In this embodiment, it should be noted that the cement was purchased at the county Yizhou Cement Co., Ltd. at its own expense.
[0057] The coarse aggregate is a mixture of 30mm limestone crushed stone, 18mm limestone crushed stone and 8mm limestone crushed stone in a mass ratio of 4:1.2:3:1.
[0058] The fine aggregate is limestone chips with a particle size of 4 mm.
[0059] In this embodiment, it should be noted that the limestone crushed stones and limestone chips were purchased from Shandong Zhanfei Building Materials Co., Ltd.
[0060] The particle size of the sintered ash is 10 mm.
[0061] Furthermore, the mud content in the sintered ash is ≤1.7%, and the needle-like content is ≤5.9%.
[0062] In this embodiment, it should be noted that the sintered ash was purchased from China Energy Conservation (Linyi) Environmental Protection Energy Co., Ltd.
[0063] In addition, this embodiment also provides a method for preparing the above-mentioned cement-stabilized mixture mixed with domestic waste incineration ash, comprising the following steps:
[0064] Step 1: Accurately weigh cement, coarse aggregate, fine aggregate, sintered ash and water for later use;
[0065] Step 2: Put cement, coarse aggregate, fine aggregate and sintered ash into a mixing device for primary mixing, add water after mixing, perform secondary mixing, and discharge to obtain a cement stabilized mixture.
[0066] The speed of the first mixing is 70 r / min and the mixing time is 20 s.
[0067] The speed of secondary mixing is 70r / min and the mixing time is 5min.
[0068] Comparative Example 1: The difference from Example 1 is that the sintered ash in this example is 40 parts.
[0069] Comparative Example 2: The difference from Example 1 is that the amount of sintered ash in this example is 110 parts.
[0070] Comparative Example 3: The difference from Example 1 is that the coarse aggregate in this example is replaced by limestone crushed stone with an equal amount of particle size of 20 mm.
[0071] Comparative Example 4: The difference from Example 1 is that the coarse aggregate in this example is replaced by limestone crushed stone with an equal amount of particle size of 10 mm.
[0072] Comparative Example 5: The difference from Example 1 is that the coarse aggregate in this example is replaced by limestone crushed stone with an equal particle size of 6 mm.
[0073] Performance test: The cement stabilized mixture samples provided in Examples 1 to 3 and Comparative Examples 1 to 5 are marked as Examples 1 to 3 and Comparative Examples 1 to 5, respectively; and the relevant properties of the cement stabilized mixtures provided in Examples 1 to 3 and Comparative Examples 1 to 5 are tested as follows:
[0074] Compressive strength test: The test method is to conduct compressive strength test according to JTG E42-2005 and JTG E51-2009.
[0075] The obtained test data are recorded in Table 1 below:
[0076] Table 1 Mechanical properties test results of each group of cement stabilized mixtures
[0077] Group Compressive strength(MPa) Example 1 Group 7.0 Example 2 Group 7.1 Example 3 Group 6.9 Comparison group 1 5.9 Comparison of 2 groups 5.8 Comparison of 3 groups 6.5 Comparison of 4 groups 6.4 Comparison of 5 groups 6.5
[0078] By comparing and analyzing the relevant data in Table 1, it can be seen that the cement-stabilized mixture mixed with domestic waste incineration ash prepared by the present invention has good mechanical properties, and can realize the utilization of sintered ash, reduce costs, and effectively ensure its quality. This shows that the cement-stabilized mixture mixed with domestic waste incineration ash and the preparation method thereof provided by the present invention have a broader market prospect and are more suitable for promotion.
[0079] In the present invention, cement, coarse aggregate, fine aggregate, sintered ash and water are used as raw materials, and cement, coarse aggregate, fine aggregate and sintered ash are put into a mixing device for primary mixing, and water is added thereto after mixing, and secondary mixing is performed, and the material is discharged to obtain a cement stabilized mixture. The cement stabilized mixture mixed with domestic waste incineration ash prepared by the present invention has good mechanical properties. At the same time, the reuse of domestic waste incineration slag reduces the cost of disposal and stacking of a large amount of slag, saves a large amount of disposal costs, and has good economic benefits.
[0080] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0081] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.
Claims
1. A cement stabilized mixture mixed with domestic waste incineration ash, characterized in that: The invention is composed of the following raw materials in parts by weight: 60 to 200 parts of cement, 20 to 60 parts of coarse aggregate, 10 to 80 parts of fine aggregate, 50 to 100 parts of sintered ash and 160 to 170 parts of water.
2. The cement-stabilized mixture containing domestic waste incineration ash according to claim 1, characterized in that: The cement used is P.C42.5 grade slow-setting composite silicate cement.
3. The cement-stabilized mixture containing domestic waste incineration ash according to claim 1, characterized in that: The coarse aggregate is composed of limestone crushed stone with a particle size of 20 to 30 mm, limestone crushed stone with a particle size of 10 to 18 mm, and limestone crushed stone with a particle size of 6 to 8 mm, in the proportion of 1 to 4: The mixture is mixed in a mass ratio of 0.65 to 1.2:1 to 3:
1.
4. The cement-stabilized mixture mixed with domestic waste incineration ash according to claim 1, characterized in that: The fine aggregate is limestone chips with a particle size of 1 to 4 mm.
5. The cement-stabilized mixture mixed with domestic waste incineration ash according to claim 1, characterized in that: The particle size of the sintered ash is 1 to 10 mm.
6. The cement-stabilized mixture mixed with domestic waste incineration ash according to claim 1, characterized in that: The sintered ash has a mud content of ≤1.7% and a needle-like content of ≤5.9%.
7. The method for preparing a cement-stabilized mixture mixed with domestic waste incineration ash according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: Accurately weigh cement, coarse aggregate, fine aggregate, sintered ash and water for later use; Step 2: Put cement, coarse aggregate, fine aggregate and sintered ash into a mixing device for primary mixing, add water after mixing, perform secondary mixing, and discharge to obtain a cement-stabilized mixture.
8. The method for preparing a cement-stabilized mixture mixed with domestic waste incineration ash according to claim 7, characterized in that: In the step 2, the rotation speed of the primary mixing is 50 to 70 r / min, and the mixing time is 15 to 20 s.
9. The method for preparing a cement-stabilized mixture mixed with domestic waste incineration ash according to claim 7, characterized in that: In the step 2, the rotation speed of the secondary mixing is 50-70 r / min, and the mixing time is 3-5 min.