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High-strength lightweight concrete and preparation method thereof

A lightweight concrete and concrete technology, applied in the field of concrete, can solve the problems of easily affecting the strength of concrete and high air bubble content in lightweight concrete, and achieve the effects of improving mechanical strength and crack resistance, high mechanical strength, and improving connection density

Active Publication Date: 2022-05-06
深圳市深建混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the high air bubble content in lightweight concrete, it is easy to affect the strength of concrete. Therefore, it is urgent to prepare a high-strength lightweight concrete

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0045] Preparation Example 1: Hydrophobic modified ceramsite is prepared by the following method:

[0046] Heat and melt the microcrystalline wax, then weigh the melted microcrystalline wax and spray it on the surface of the ceramsite. The weight ratio of the microcrystalline wax to the ceramsite is 0.25:1. Under stirring, the spraying speed of the microcrystalline wax is 2g / s, and after the spraying is finished, the loaded ceramsite is obtained;

[0047] Weigh silica and spray it onto the surface of the loaded ceramsite. The silica is silica powder with a particle size of 200 μm. The weight ratio of silica to loaded ceramsite is 0.1:1. During the silica spraying process, the loaded ceramsite is constantly Stir at a speed of 300r / min, spray the silicon dioxide at a speed of 2g / s, and dry and disperse to obtain hydrophobically modified ceramsite.

preparation example 2

[0048] Preparation example 2: Hydrophobic modified ceramsite is prepared by the following method:

[0049] Heat and melt the microcrystalline wax, then weigh the melted microcrystalline wax and spray it on the surface of the ceramsite. The weight ratio of the microcrystalline wax to the ceramsite is 0.1:1. Under stirring, the spraying speed of the microcrystalline wax is 1g / s, and after the spraying is finished, the loaded ceramsite is obtained;

[0050] Weigh silica and spray it onto the surface of the loaded ceramsite. The silica is silica powder with a particle size of 200 μm. The weight ratio of silica to loaded ceramsite is 0.05:1. During the silica spraying process, the loaded ceramsite continues Stir at a rotational speed of 200r / min, spray the silicon dioxide at a speed of 1g / s, and dry and disperse to obtain hydrophobically modified ceramsite.

preparation example 3

[0051] Preparation example 3: Hydrophobic modified ceramsite is prepared by the following method:

[0052] Heat and melt the microcrystalline wax, then weigh the melted microcrystalline wax and spray it on the surface of the ceramsite. The weight ratio of the microcrystalline wax to the ceramsite is 0.4:1. Under stirring, the spraying speed of the microcrystalline wax is 5g / s, and after the spraying ends, the loaded ceramsite is obtained;

[0053] Weigh silica and spray it onto the surface of the loaded ceramsite. The silica is silica powder with a particle size of 200 μm. The weight ratio of silica to loaded ceramsite is 0.2:1. During the silica spraying process, the loaded ceramsite continues to Stir at a speed of 400r / min, spray the silicon dioxide at a speed of 5g / s, and dry and disperse to obtain hydrophobically modified ceramsite.

[0054] Preparation example of tea saponin solution

[0055] The tea saponin in the following raw materials was purchased from Jinan Qianzh...

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Abstract

The invention relates to the field of concrete, and particularly discloses high-strength lightweight concrete and a preparation method thereof. The high-strength lightweight concrete is prepared from the following raw materials in parts by weight: 40-65 parts of cement, 2-4.5 parts of lime, 40-75 parts of hydrophobic modified ceramsite, 5-12 parts of fly ash, 5-15 parts of silica fume, 2-4.5 parts of a water reducing agent, 1-5 parts of a tea saponin solution, 25-38 parts of water and 1-8 parts of filling fibers. The preparation method comprises the following steps: weighing the water reducing agent, the water and the tea saponin solution, mixing, stirring and foaming to prepare foam liquid; weighing cement, lime, hydrophobic modified ceramsite, fly ash, silica fume and filling fiber, mixing and stirring to obtain a mixture; weighing the foam liquid, mixing and stirring the mixture to obtain a mixed material, and pouring and curing the mixed material to obtain concrete; the lightweight concrete has relatively high mechanical strength.

Description

technical field [0001] The application relates to the field of concrete, more specifically, it relates to a high-strength lightweight concrete and a preparation method thereof. Background technique [0002] Lightweight concrete, also known as foam concrete, contains a large number of closed pores and is light in weight. It has the advantages of light weight and thermal insulation; foam concrete can be used for blocks, lightweight wall panels, and wall insulation. Layers, sound insulation materials, building construction, etc. [0003] However, due to the high air bubble content in lightweight concrete, it is easy to affect the strength of concrete. Therefore, it is urgent to prepare a high-strength lightweight concrete. Contents of the invention [0004] In order to make lightweight concrete have higher mechanical strength, the application provides a high-strength lightweight concrete and a preparation method thereof. [0005] In the first aspect, the application provide...

Claims

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Application Information

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IPC IPC(8): C04B28/12C04B24/10C04B20/12C04B18/02C04B16/06C04B38/10C04B111/34C04B111/40
CPCC04B28/12C04B18/023C04B16/0633C04B16/0691C04B24/10C04B20/12C04B38/10C04B2201/20C04B2201/50C04B2111/343C04B2111/40C04B7/00C04B18/08C04B18/146C04B2103/302C04B20/1025C04B20/1066Y02W30/91
Inventor 柏成林徐凡赵飞
Owner 深圳市深建混凝土有限公司
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