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A kind of concrete and preparation method thereof

A concrete and mixture technology, applied in the field of concrete, can solve the problems of occupying cultivated land, polluting the environment, and losing activity of the soil, and achieves the effects of stable spatial structure, low thermal conductivity, and good thermal insulation effect

Active Publication Date: 2022-07-15
东莞市建工集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] With the rapid development of my country's economy and the large-scale construction of infrastructure, a large amount of construction waste has been generated due to construction and demolition, and only a small number of resources can be used for resource utilization. Most of the construction waste is treated with The method of dumping or landfilling not only occupies arable land and pollutes the environment, but also the alkaline waste concrete will deactivate large areas of soil

Method used

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  • A kind of concrete and preparation method thereof
  • A kind of concrete and preparation method thereof
  • A kind of concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0051] In this preparation example, the silicon aerogel powder is selected from hydrophilic silicon aerogel powder with a particle size of 1.2 mm; the silicon carbide whisker is selected from beta-type silicon carbide whisker, and the whisker length is 35 μm. The whisker diameter is 0.15 μm; the asbestos fiber is 18 mm asbestos fiber. The thermal insulation filler is specifically made by the following methods:

[0052] S1: When 35kg of silicon aerogel powder is placed in a plasma surface treatment machine, the processing gas includes argon 150SCCM; nitrogen 100SCCM, and the silicon aerogel powder is surface-treated for 60s under the condition of vacuum degree of 45Pa

[0053] S2: after weighing 5kg of asbestos fibers and 1kg of silicon carbide whiskers, in a powder particle mixer, stir at a speed of 500r / min until uniformly mixed to obtain a dry powder mixture;

[0054] S3: Divide the silicon aerogel powder obtained after the treatment in step S1 into 4 equal parts, each equa...

preparation example 2-4

[0057] The difference between Preparation Example 2-4 and Preparation Example 1 is that the weight ratio of silicon aerogel powder, asbestos fiber and silicon carbide whisker is different.

[0058] Table 2. Preparation example 2-4 raw material weight parts and proportioning table

[0059] component Preparation Example 1 Preparation Example 2 Preparation Example 3 Preparation Example 4 Silicon aerogel powder / kg 35 18 25 32 Asbestos fiber / kg 5 15 10 6 Silicon carbide whiskers / kg 1 1 1 1 ratio by weight 35：5：1 18:15：1 25:10:1 32:6:1

preparation example 5

[0061] The difference between this preparation example and preparation example 4 is that the silicon aerogel powder in this preparation example is hydrophobic silicon aerogel powder.

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Abstract

The present application relates to the technical field of concrete, and specifically discloses a concrete and its preparation method and use. The concrete includes recycled coarse aggregate, waste glass sand, cement, polycarboxylate water reducer, talc powder, and thermal insulation filler; the preparation method of thermal insulation filler is: after plasma surface treatment of silicon aerogel powder, it is evenly divided into multiple parts and Asbestos fibers and silicon carbide whiskers are mixed, so that the silicon aerogel powder is fully dispersed in the mixture of asbestos fibers and silicon carbide whiskers dry powder, and is wrapped by the three-dimensional structure of asbestos fibers and silicon carbide whiskers, which has a special spatial structure , the thermal insulation performance of the silicon aerogel powder is enhanced; the concrete of the present application has the advantage of low thermal conductivity.

Description

technical field [0001] The present application relates to the technical field of concrete, and more particularly, to a concrete and a preparation method thereof. Background technique [0002] With the rapid development of my country's economy and the large-scale construction of infrastructure, a large amount of construction waste is generated due to construction and demolition, and only a very small number of them can be used for resource utilization. The dumping or landfill method not only occupies arable land and pollutes the environment, but also the alkaline waste concrete will inactivate a large area of ​​soil. At the same time, the consumption of natural resources such as sand and gravel in my country is huge. According to statistics, the consumption of sand and gravel materials alone for concrete and mortar exceeds 10 billion tons per year. Therefore, how to effectively use construction waste, especially the recycling of waste concrete, is a major challenge facing the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B38/08C04B111/40
CPCC04B28/04C04B2111/00017C04B2111/40C04B2201/50C04B2201/32C04B18/0427C04B14/042C04B2103/302C04B18/16C04B14/064C04B14/383C04B14/40C04B38/08
Inventor 项卫民龙滕虹汤俊
Owner 东莞市建工集团有限公司
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