Preparation process of homogeneous self-insulation energy-saving building block

Abstract

The invention discloses a preparation process of a homogeneous self-insulation energy-saving building block. The method comprises the following steps: preparing an active mixed material, namely uniformly mixing river sand, glass fibers, sepiolite, a naphthalene sulfonate water reducing agent and active silicon dioxide; preparing slurry: pumping water, cement, the active mixed material and the propylene organic thickening agent into a double-shaft stirrer in a stirring state by utilizing cement weighing, conveying and stirring system equipment, and uniformly stirring to obtain the slurry; preparing foams by using a foaming agent: preparing the cement foaming agent into foams by using a foaming system of a foaming machine; and pouring the prepared mixed slurry into a forming mold, demolding, cutting into a required size by a cutting machine, and naturally curing for 28 days to be used on a wall.

Description

Technical Field

[0001] The present invention relates to a process for preparing a homogeneous self-insulating energy-saving building block, and particularly relates to the field of building materials. Background Art

[0002] Currently, domestic exterior wall insulation has traditionally relied on polystyrene foam, rock wool, and integrated panels. However, projects using these materials have been associated with fires and the detachment of external insulation blocks. Integrated panels also suffer from low product strength. Currently, homogeneous self-insulating blocks on the market are manufactured entirely from EPS (polystyrene polystyrene) particles, cement, sand, fly ash, silica fume, dispersible latex powder, slag, lightweight ceramsite, perlite, magnesium hydroxide, activators, and mineral powders. These products exhibit high bulk density, low strength, high thermal conductivity, low fire ratings, complex manufacturing processes, and high production costs. Alternatively, earlier-stage solutions utilize aerated blocks and sintered clay bricks, with thermal transfer coefficients (K) of 0.56-0.68 W / m2•K and 0.8 W / m2•K, respectively. These products fail to meet the market's demand for low-cost, high-strength, high-insulation, low thermal conductivity, high fire ratings, and energy-saving and environmentally friendly insulation blocks. The present invention aims to simultaneously meet four standards: 1. Strength grade ≥5Mpa; 2. Bulk density ≤800kg / m³; 3. Heat transfer coefficient of the product ≤0.45W / ㎡•K, achieving 75% building energy saving (a heat transfer coefficient K value less than or equal to 0.45W / ㎡•K can achieve the 75% building energy saving standard); 4. Fire protection grade A1; The technology of this invention uses building materials to fill, mix, cast, and form blocks. After the blocks solidify, they are cut into the required block-shaped building insulation materials. This technology allows for both masonry and insulation to be completed using traditional bricklaying techniques without changing existing construction techniques. The invention discloses a process for preparing homogeneous, self-insulating, and energy-saving building blocks. Summary of the Invention

[0003] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a process for preparing homogeneous self-insulating energy-saving blocks with low cost, high product strength, high fire resistance, low heat transfer coefficient, good energy saving and sound insulation effects, and excellent performance.

[0004] In order to solve the above shortcomings, the technical solutions of the present invention are as follows: The preparation process of homogeneous self-insulating energy-saving building blocks consists of the following steps: (1) Preparation of active mixed materials: river sand, sepiolite, glass fiber, tea sulfonate water reducer and active silica are mixed evenly; (2) Preparation of slurry: Using cement weighing, conveying and mixing system equipment, pump water, cement, active mixed materials and propylene organic thickener into the twin-shaft mixer in a stirring state and mix them evenly to obtain slurry; (3) Foam preparation by foaming machine: The cement foaming agent is made into foam by using the foaming system of the foaming machine; (4) Mixing: Under the control of an automated stirring system, the slurry prepared in step (2) and the foam prepared in step (3) are respectively conveyed into a mixer according to the ratio and uniformly mixed to obtain a mixed slurry; (5) Pour the prepared mixed slurry into the molding mold and solidify for 5-10 hours before demoulding. Cut it into blocks of the required size and cure for 28 days to meet the building insulation requirements.

[0005] The ingredients include 280-310 parts of cement, 320-340 parts of river sand, 3-5 parts of sepiolite, 13-17 parts of glass fiber, 5-15 parts of foaming agent, 6-10 parts of phthalate sulfonate water reducer, 10-13 parts of acrylic organic thickener, 32-37 parts of active silica, and 110-120 parts of water. The river sand should have a particle size of less than 0.8 mm (the river sand should be clean and free of soil, and the mud content should not exceed 3%).

[0006] As a preferred configuration, the components are proportioned as follows: 290 parts cement, 315 parts river sand, 4 parts sepiolite, 14 parts glass fiber, 13 parts foaming agent, 7 parts phthalate sulfonate water reducer, 12 parts propylene-based organic thickener, 35 parts activated silica, and 118 parts water. As another preferred configuration, the components are proportioned as follows: 305 parts cement, 335 parts river sand, 3 parts sepiolite, 17 parts glass fiber, 8 parts foaming agent, 10 parts phthalate sulfonate water reducer, 10 parts propylene-based organic thickener, 32 parts activated silica, and 110 parts water.

[0007] As the optimal setting method, it is characterized in that the proportions of the components are as follows: 285 parts of cement, 325 parts of river sand, 5 parts of sepiolite, 16 parts of glass fiber, 11 parts of foaming agent, 6 parts of phthalate sulfonate water reducer, 13 parts of propylene organic thickener, 34 parts of active silica, and 120 parts of water.

[0008] The length of the glass fiber is 12-20 mm.

[0009] The foaming agent is prepared by itself, and the addition ratio of sodium lauryl sulfate powder material and purified water is 1:30.

[0010] The propylene organic thickener is self-prepared, and the addition ratio of sodium polyacrylate powder material and purified water is 1:100.

[0011] The active silicon dioxide is diatomaceous earth (or silica fume) with a particle size of less than 25 μm, and the cement is composite silicate cement.

[0012] Compared with the prior art, the present invention has the following advantages and beneficial effects: 1. The concrete prepared by the method of the present invention has the characteristics of good sound insulation and heat insulation effect, uniform texture, and not easy to crack.

[0013] The present invention combines the components and proportions of concrete raw materials. The concrete prepared by this method not only has good sound insulation and heat insulation effects, but also has extremely excellent compressive strength, fire resistance and energy-saving performance after testing, and is very suitable for promotion and application.

Claims

1. The present invention relates to a process for preparing a homogeneous self-insulating energy-saving building block, and specifically to the field of building materials.

2. A process for preparing homogeneous self-insulating energy-saving building blocks, characterized in that: It consists of the following steps: (1) Preparation of active mixed materials: river sand, sepiolite, glass fiber, phthalate sulfonate water reducer and active silica are mixed evenly.

3. (2) Preparation of slurry: Using cement weighing, conveying and mixing system equipment, pump water, cement, active mixed materials and propylene organic thickener into a twin-shaft mixer in a stirring state and mix them evenly to obtain slurry.

4. (3) Preparation of foam using a foaming machine: The cement foaming agent is made into foam using the foaming system of the foaming machine.

5. (4) Mixing: Under the control of an automated stirring system, the slurry prepared in step (2) and the foam prepared in step (3) are respectively conveyed into a mixer according to the ratio and uniformly mixed to obtain a mixed slurry.

6. (5) Pour the prepared mixed slurry into the forming mold. Under normal temperature of 25℃, it can be demoulded in 5 hours. After demoulding, the blocks are cut into blocks of different sizes according to the user's needs. After natural curing for 28 days, they can be put on the wall for use.

7. Among them, 280-310 parts of cement, 320-340 parts of river sand, 3-5 parts of sepiolite, 13-17 parts of glass fiber, 5-15 parts of foaming agent, 6-10 parts of phthalate sulfonate water reducer, 10-13 parts of acrylic organic thickener, 35-40 parts of active silica, 110-120 parts of water; the particle size of the river sand is less than 0.8mm (the river sand should be clean and free of soil, and the mud content cannot exceed 3%).

8. The process for preparing the homogeneous self-insulating energy-saving building blocks according to claim 2, characterized in that: The proportions of the components are as follows: 290 parts of cement, 315 parts of river sand, 4 parts of sepiolite, 14 parts of glass fiber, 13 parts of foaming agent, 7 parts of phthalate sulfonate water reducer, 12 parts of acrylic organic thickener, 37 parts of active silica, and 118 parts of water.

9. The process for preparing the homogeneous self-insulating energy-saving building blocks according to claim 2, characterized in that: The proportions of the components are as follows: 305 parts of cement, 335 parts of river sand, 3 parts of sepiolite, 17 parts of glass fiber, 8 parts of foaming agent, 10 parts of phthalate sulfonate water reducer, 10 parts of acrylic organic thickener, 32 parts of active silica, and 110 parts of water.

10. The process for preparing the homogeneous self-insulating energy-saving building blocks according to claim 2, characterized in that: The proportions of the components are as follows: 285 parts of cement, 325 parts of river sand, 5 parts of sepiolite, 16 parts of glass fiber, 11 parts of foaming agent, 6 parts of phthalate sulfonate water reducer, 13 parts of acrylic organic thickener, 34 parts of active silica, and 120 parts of water.

11. The process for preparing a homogeneous self-insulating energy-saving building block according to any one of claims 2 to 5, characterized in that: The length of the glass fiber is 12-20 mm.

12. The foaming agent is prepared by ourselves, and the addition ratio of sodium lauryl sulfate powder material and purified water is 1:

30.

13. The acrylic organic thickener is self-prepared, using sodium polyacrylate powder and purified water in a ratio of 1:

100.

14. The active silica is diatomaceous earth with a particle size of less than 25 μm, and the cement is composite silicate cement.