All-solid waste cementing material and preparation process thereof

Abstract

The invention discloses an all-solid waste cementing material and a preparation process of the all-solid waste cementing material. The cement grinding aid comprises the following components in parts by weight: 60-90 parts of solid waste materials, 10-20 parts of an exciting agent, 8-15 parts of desulfurized gypsum, 2-5 parts of an alcohol amine compound and the balance of water. The solid waste material comprises 20-30 parts of desulfurized fly ash, 15-25 parts of steel slag powder, 10-20 parts of slag powder and 5-15 parts of construction waste micro powder. According to the present invention, the high value-added resource utilization of the waste is achieved, the purpose of treating the waste with the waste is achieved, the alcamic acid ester modifier can effectively reduce the internal friction force among particles in the solid waste cementing material system through the intermolecular physical adsorption, the chemical reaction, the plasticizing effect and the hydration reaction adjustment, and the modification effect is good; the flowability and construction performance of the material can be improved, the workability of the material is effectively improved, and the material adapts to more complex construction environments.

Description

Technical Field

[0001] This invention relates to the field of solid waste cementitious materials technology, and more specifically, to a solid waste cementitious material and its preparation process. Background Technology

[0002] In the fields of construction and civil engineering, the application of cementitious materials is crucial. However, with increasing environmental awareness and the growing prominence of resource scarcity, the use of traditional cementitious materials (such as cement) faces challenges. The cement production process consumes large amounts of natural resources and generates significant quantities of greenhouse gases such as carbon dioxide. This process not only causes severe environmental pollution but also exacerbates resource depletion. Therefore, there is an urgent need to find alternative materials to reduce dependence on traditional raw materials.

[0003] Many solid waste cementitious materials often cannot match the performance of traditional cement materials, especially in terms of strength, durability, and impermeability. This limits the practical application of solid waste cementitious materials, making them unable to meet the demands of high-performance building materials. Furthermore, the preparation parameters during the manufacturing process cannot be optimized and adjusted according to the actual product quality and usage effects, resulting in products made with fixed preparation parameters that cannot effectively meet practical application requirements.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Summary of the Invention

[0005] In response to the problems in related technologies, this invention proposes a solid waste cementitious material and its preparation process to overcome the aforementioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by the present invention is as follows: A solid waste cementitious material comprising the following components by weight; The mixture consists of 60-90 parts solid waste material, 10-20 parts activator, 8-15 parts desulfurized gypsum, 2-5 parts alkanolamine compounds, and the remainder is water.

[0007] The solid waste materials include 20-30 parts of desulfurization ash, 15-25 parts of steel slag powder, 10-20 parts of slag powder, and 5-15 parts of construction waste powder.

[0008] Preferably, the fineness of the desulfurization ash, steel slag powder, and slag powder is above 450 mesh.

[0009] Preferably, the activator is obtained by compounding an alcohol amine compound and cationic starch.

[0010] Preferably, the alkanolamine compound is one or more of triethanolamine, methylalkanolamine, diethanolamine, isopropanolamine, and aminomethylpropanol.

[0011] According to another aspect of the present invention, a process for preparing a solid waste cementitious material is provided, for use in the solid waste cementitious material, comprising the following steps; Mix 60-90 parts of solid waste material with 10-20 parts of activator and 8-15 parts of desulfurization gypsum to obtain a mixture; The division method of the ultrasonic testing area is determined based on the number and density of internal components of the target molded object. The obtained mixture is added to a vertical roller mill and ground with 2-5 parts of an alcohol amine compound and water to obtain a solid waste cementitious material. The strength status is determined based on the strength reference value of the solid waste cementitious material, and the determination of whether to adjust the fly ash content or calcium oxide content is based on the obtained strength status. The uniformity is determined based on the strength difference value of the solid waste cementitious material, and the feed rate of the crusher is adjusted based on the obtained uniformity.

[0012] As a preferred option, the corresponding compensation adjustment method is determined according to the strength status, including increasing the amount of fly ash or increasing the amount of calcium oxide.

[0013] The beneficial effects of this invention are: to realize the high-value-added resource utilization of waste and achieve the purpose of treating waste with waste. The alcoholic ester modifier can effectively reduce the internal friction between particles in the solid waste cementitious material system through physical adsorption, chemical reaction, plasticizing effect and regulation of hydration reaction, thereby improving the fluidity and workability of the material, effectively improving the workability of the material and adapting to more complex construction environments. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a flowchart of a solid waste cementitious material and its preparation process according to an embodiment of the present invention. Detailed Implementation

[0016] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0017] According to an embodiment of the present invention, a solid waste cementitious material and its preparation process are provided.

[0018] Example 1: like Figure 1 As shown, the solid waste cementitious material and its preparation process according to an embodiment of the present invention include the following components by mass; The mixture consists of 60-90 parts solid waste material, 10-20 parts activator, 8-15 parts desulfurized gypsum, 2-5 parts alkanolamine compounds, and the remainder is water.

[0019] Example 2: like Figure 1 As shown, the solid waste material includes 20-30 parts of desulfurization ash, 15-25 parts of steel slag powder, 10-20 parts of slag powder, and 5-15 parts of construction waste powder.

[0020] The fineness of the desulfurization ash, steel slag powder, and slag powder is above 450 mesh.

[0021] The activator is obtained by compounding an alcohol amine compound and cationic starch.

[0022] The alkanolamine compound is one or more of triethanolamine, methylalkanolamine, diethanolamine, isopropanolamine, and aminomethylpropanol.

[0023] According to another aspect of the present invention, a process for preparing a solid waste cementitious material is provided, for use in the solid waste cementitious material, comprising the following steps; S1. Mix 60-90 parts of solid waste material with 10-20 parts of activator and 8-15 parts of desulfurization gypsum to obtain a mixture; S2. Determine the division method of the ultrasonic testing area based on the number and density of internal components of the target molded object; S3. Add the obtained mixture to a roller mill and grind it with 2-5 parts of alcohol amine compound and water to obtain a solid waste cementitious material. S4. Determine the strength status based on the strength reference value of the solid waste cementitious material, and determine whether to adjust the fly ash content or calcium oxide content based on the obtained strength status. S5. Determine the uniformity state based on the strength difference value corresponding to the solid waste cementitious material, and determine whether to adjust the feed speed of the crusher based on the obtained uniformity state.

[0024] The corresponding compensation adjustment method is determined based on the intensity status, including increasing the amount of fly ash or increasing the amount of calcium oxide.

[0025] In summary, by utilizing the above-mentioned technical solutions of the present invention, high-value-added resource utilization of waste can be achieved, realizing the purpose of treating waste with waste. Alcoholic ester modifiers, through intermolecular physical adsorption, chemical reaction, plasticizing effect, and regulation of hydration reaction, can effectively reduce the internal friction between particles in solid waste cementitious material systems, improve the fluidity and workability of materials, effectively improve the workability of materials, and adapt to more complex construction environments.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A solid waste cementitious material, characterized in that, Includes the following quality components; The mixture consists of 60-90 parts solid waste material, 10-20 parts activator, 8-15 parts desulfurized gypsum, 2-5 parts alkanolamine compounds, and the remainder is water.

2. The all-solid waste cementitious material according to claim 1, characterized in that, The solid waste materials include 20-30 parts of desulfurization ash, 15-25 parts of steel slag powder, 10-20 parts of slag powder, and 5-15 parts of construction waste powder.

3. The all-solid waste cementitious material according to claim 2, characterized in that, The fineness of the desulfurization ash, steel slag powder, and slag powder is above 450 mesh.

4. The all-solid waste cementitious material according to claim 3, characterized in that, The activator is obtained by compounding an alcohol amine compound and cationic starch.

5. The all-solid waste cementitious material according to claim 4, characterized in that, The alkanolamine compound is one or more of triethanolamine, methylalkanolamine, diethanolamine, isopropanolamine, and aminomethylpropanol.

6. A preparation process for an all-solid waste cementitious material, characterized in that, The method for using the all-solid waste cementitious material as described in claim 5 includes the following steps; Mix 60-90 parts of solid waste material with 10-20 parts of activator and 8-15 parts of desulfurization gypsum to obtain a mixture; The division method of the ultrasonic testing area is determined based on the number and density of internal components of the target molded object. The obtained mixture is added to a vertical roller mill and ground with 2-5 parts of an alcohol amine compound and water to obtain a solid waste cementitious material. The strength status is determined based on the strength reference value of the solid waste cementitious material, and the determination of whether to adjust the fly ash content or calcium oxide content is based on the obtained strength status. The uniformity is determined based on the strength difference value of the solid waste cementitious material, and the feed rate of the crusher is adjusted based on the obtained uniformity.

7. The preparation process of a solid waste cementitious material according to claim 6, characterized in that, The corresponding compensation adjustment method is determined based on the intensity status, including increasing the amount of fly ash or increasing the amount of calcium oxide.

Images