Light cement-based porous material and preparation method thereof
A technology for porous materials and cement, applied in the field of lightweight cement-based porous materials and their preparation, can solve problems such as insufficient compressive strength, and achieve the effects of reducing cement consumption, enhancing crack resistance, and improving durability
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[0021] Example 1
[0022] In order to solve the problem that the compressive strength of the existing cement-based porous materials cannot meet the requirements, the present invention provides a lightweight cement-based porous material. The lightweight cement-based porous material is calculated in parts by mass and consists of the following components composition:
[0023] 185~280 parts of cement, 20~70 parts of fly ash, 5~14 parts of silica fume, 8.3~16.8 parts of chemical foaming agent, 1~2 parts of water reducing agent, 0.3~0.45 parts of foam stabilizer, fiber 1.85~8.40 Parts, 0.5 to 2.0 parts of water repellent, 102 to 168 parts of water.
[0024] Preferably, the cement in the present invention is P.II 52.5 Portland cement.
[0025] Preferably, the fly ash in the present invention has a CaO content of less than 10% and a surface area of 350-360m 2 / kg of low calcium ash.
[0026] Preferably, the average particle size of the silica fume in the present invention is 0.1 um, and the...
Example Embodiment
[0033] Example 2
[0034] This embodiment provides a preparation method of the lightweight cement-based porous material of the present invention, and the preparation method includes:
[0035] Step 1. In terms of parts by mass, 185~280 parts of cement, 20~70 parts of fly ash, 5~14 parts of silica fume, 8.3~16.8 parts of chemical foaming agent, 1~2 parts of water reducing agent, foam stabilizer Weigh 0.3~0.45 parts of agent, 1.85~8.40 parts of fiber, 0.5~2.0 parts of water repellent, 102~168 parts of water, and the temperature of water is 30~350℃;
[0036] Step 2. Mix the cement, fly ash, silica fume, water reducing agent, foam stabilizer, fiber and water repellent weighed in step 1 and mix and stir evenly, then add the water weighed in step 1 and stir evenly , Get the slurry;
[0037] Step 3. Add the chemical foaming agent weighed in step 1 to the slurry obtained in step 2, stir evenly, pour into the mold, and foam after standing to form a test block with a height of 35-40 mm. The tes...
Example Embodiment
[0038] Example 3
[0039] This embodiment provides a lightweight cement-based porous material. The lightweight cement-based porous material consists of the following components in parts by mass:
[0040] 185 parts of cement, 20 parts of fly ash, 5 parts of silica fume, 8.3 parts of chemical foaming agent, 1 part of water reducing agent, 0.3 part of foam stabilizer, 1.85 parts of fiber, 0.5 part of water repellent, 102 parts of water.
[0041] Preparation Process:
[0042] Step 1. In terms of parts by mass, 185 parts of cement, 20 parts of fly ash, 5 parts of silica fume, 8.3 parts of chemical foaming agent, 1 part of water reducing agent, 0.3 part of foam stabilizer, 1.85 parts of fiber, water-repellent Weigh 0.5 parts of reagent and 102 parts of water, the temperature of the water is 30℃;
[0043] Step 2. Mix the cement, fly ash, silica fume, water reducing agent, foam stabilizer, fiber and water repellent weighed in step 1 and mix and stir evenly, then add the water weighed in step 1...
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