Cement-based composite and mending method of concrete cracks
A composite material, cement-based technology, applied in the field of building materials, can solve the problems affecting the building structure body, the cracking and falling off of the concrete protective layer, etc.
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Embodiment 1
[0065] Example 1: A cement-based composite material. The components of the cement-based composite material include: 45 parts of cement, 23 parts of water, 30 parts of fine aggregate, 48 parts of fly ash, 4.5 parts of silica fume, granulated blast furnace slag 8 parts, mixed with polyvinyl alcohol fibers with a volume of 1.5% of the total volume of the composite material. In this embodiment, a water reducer and a thickener are also included. The number of parts of the water reducer is 0.2 parts, and the number of parts of the thickener is 0.5 parts.
[0066] The particle size of the fine aggregate in this embodiment is less than or equal to 0.5 mm.
[0067] The diameter of the polyvinyl alcohol fiber in this example is 40 μm.
Embodiment 2
[0068] Example 2: A cement-based composite material. The components of the cement-based composite material include: 58 parts of cement, 20 parts of water, 42 parts of fine aggregate, 46 parts of fly ash, 3 parts of silica fume, granulated blast furnace slag 6 parts, also blended with polyethylene fibers at a volume of 2.5% of the total volume of the composite material. In this embodiment, a water reducer and a set retarder are also included, the number of parts of the water reducer is 0.5 part, and the part of the set retarder is 0.2 part.
[0069] The particle size of the fine aggregate in this embodiment is less than or equal to 0.5mm.
[0070] The diameter of the polyethylene fiber in this example is 50 µm.
Embodiment 3
[0071] Example 3: A cement-based composite material. The components of the cement-based composite material include: 69 parts of cement, 23 parts of water, 30 parts of fine aggregate, 48 parts of fly ash, 2 parts of silica fume, granulated blast furnace slag 5 parts, also mixed with carbon fiber whose volume is 2.0% of the total volume of the composite material. In this embodiment, a water reducing agent and a setting retarder are also included, the number of parts of the water reducing agent is 0.2 parts, and the number of parts of the setting retarder is 0.5 parts.
[0072] The particle size of the fine aggregate in this embodiment is less than or equal to 0.5 mm.
[0073] The diameter of the carbon fiber in this example is 60 μm.
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