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A high temperature resistant civil construction material with good thermal insulation effect and preparation method thereof

A technology for civil construction and high temperature resistance, applied in the field of building materials, can solve problems such as imperfect preparation process, and achieve the effects of improving mechanical properties, good fire resistance and high temperature resistance, and reducing environmental pollution problems.

Active Publication Date: 2021-10-12
ZHENGZHOU RAILWAY VOCATIONAL & TECH COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the field of new building materials, the use of plant fibers as raw materials in building materials is rarely used, and the preparation process is not perfect. Therefore, we propose a high-temperature resistant civil building material with good thermal insulation effect and its preparation method

Method used

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  • A high temperature resistant civil construction material with good thermal insulation effect and preparation method thereof
  • A high temperature resistant civil construction material with good thermal insulation effect and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A high-temperature-resistant civil construction material with good thermal insulation effect provided in this example is made of the following components in parts by weight: 52 parts of Portland cement, 15 parts of fly ash, 15 parts of clay, and 26 parts of waste brick powder , 30 parts of modified straw fiber, 6 parts of magnesium hydroxide, 3 parts of sodium hexametaphosphate, 4 parts of polycarboxylate superplasticizer, and 38 parts of water.

[0031] The preparation of the above-mentioned high-temperature-resistant civil engineering and construction materials and modified straw fibers comprises the following steps:

[0032] (1) immerse the straw fiber into clear water, clean the sludge on the straw surface, remove impurities, and after drying at 50°C, break into 3mm straw fiber particles;

[0033] (2) Add the straw fiber particles into the modifier solution according to the weight ratio of 1:2 to the modifier solution, stir to obtain the straw fiber dispersion, reac...

Embodiment 2

[0041] A high-temperature-resistant civil construction material with good thermal insulation effect provided in this example is made of the following components in parts by weight: 45 parts of aluminate cement, 18 parts of fly ash, 18 parts of clay, 20 parts of waste mortar, 28 parts of modified wheat straw fiber, 5 parts of magnesium hydroxide, 2 parts of sodium hexametaphosphate, 3 parts of polycarboxylate superplasticizer, and 30 parts of water.

[0042] The preparation of the above-mentioned high-temperature-resistant civil and construction materials and modified straw fibers includes the following steps:

[0043] (1) immerse the straw fiber in clear water, clean the sludge on the surface of the straw, remove impurities, dry it at 45°C, and break it into 5mm straw fiber particles;

[0044] (2) Add the wheat straw fiber particles to the modifier solution at a weight ratio of 1:1 to the modifier solution, stir to obtain a wheat straw fiber dispersion, react at 80°C for 8 hou...

Embodiment 3

[0052] A high-temperature-resistant civil construction material with good thermal insulation effect provided in this example is made of the following components in parts by weight: 62 parts of sulfate cement, 10 parts of fly ash, 10 parts of clay, 32 parts of waste rock slag, 28 parts of modified cotton fiber, 8 parts of magnesium hydroxide, 4 parts of sodium hexametaphosphate, 5 parts of polycarboxylate superplasticizer, and 45 parts of water.

[0053] The preparation of the above-mentioned high-temperature-resistant civil and construction materials and modified straw fibers includes the following steps:

[0054] (1) immerse the cotton fiber in clear water, clean the sludge on the surface of the cotton stalk, remove impurities, dry it at 65°C, and break it into 2mm wheat straw fiber particles;

[0055] (2) Add the cotton fiber particles to the modifier solution in a weight ratio of 1:5 to the modifier solution, stir to obtain a cotton fiber dispersion, react at 100°C for 6 ho...

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Abstract

The invention belongs to the technical field of building materials, and discloses a high-temperature-resistant civil building material with good thermal insulation effect, which is made of the following components in parts by weight: 45-62 parts of cement, 10-18 parts of fly ash, and 10-18 parts of clay 18 parts, 20-32 parts of construction waste, 28-35 parts of modified plant fiber, 5-8 parts of magnesium hydroxide, 2-4 parts of dispersant, 3-5 parts of water reducing agent, and 30-45 parts of water. The invention also provides a preparation method of the high-temperature-resistant civil construction material. The invention rationally utilizes waste construction waste and fly ash, and reduces environmental pollution. By adding modified plant fibers into building materials, the fiber molecules are entangled and cross-linked to form a network structure, so that the building After the material is solidified, the cross-linked network structure can be solidified in it to achieve overall fastening, prevent stress concentration, increase strength and improve its thermal insulation effect and flame retardant performance.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a high-temperature-resistant civil building material with good thermal insulation effect and a preparation method thereof. Background technique [0002] The development of building materials is rapid, and the use of good thermal insulation technology and materials in industry and construction can often achieve twice the result with half the effort. As the most commonly used building structure material at this stage, the degradation behavior of mechanical properties of cement-based materials under high temperature directly determines the safety and stability of building structures under fire. Traditional thermal insulation materials only have a single thermal resistance performance, the fire prevention effect is not ideal, and they are not resistant to high temperatures. Therefore, the research and improvement of building materials has always been the focus ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B28/06C04B28/14C04B20/02C04B18/24
CPCC04B18/24C04B18/248C04B20/023C04B28/04C04B28/06C04B28/14C04B2201/32C04B2201/50C04B18/08C04B14/10C04B18/16C04B22/066C04B22/16C04B2103/302C04B22/002C04B18/0418C04B18/12Y02W30/91
Inventor 苏丹娜李帆孙丽娟樊苗耿文燕孙红硕杜玲霞
Owner ZHENGZHOU RAILWAY VOCATIONAL & TECH COLLEGE