Radiation-proof thermal insulation concrete and preparation method thereof

A thermal insulation concrete and anti-radiation technology, which is applied in the field of building materials, can solve the problems of poor concrete construction performance, impact on radiation resistance performance, and poor anti-segregation performance, so as to improve workability, enhance electromagnetic wave absorption effect, and increase contact area effect

Active Publication Date: 2018-12-11
CHONGQING VOCATIONAL COLLEGE OF TRANSPORTATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, using magnet ore, limonite or barite as coarse and fine aggregates, introducing a sufficient amount of crystal water and light element compounds such as boron and lithium is the most widely used method for preparing radiation-proof concrete. This method is used to prepare anti-radiation concrete. The coarse and fine aggregates of radiation concrete can shield γ-rays, light element compounds can effectively capture neutrons without forming secondary γ-rays, and the radiation shielding effect is better, but due to the poor segregation resistance of existing radiation-proof concrete, the concrete constructability become worse, affecting its radiation resistance; and may also cause volume deformation, when the deformation exceeds a certain limit, it will eventually lead to cracking and damage

Method used

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  • Radiation-proof thermal insulation concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Porous Flower Fe 3 O 4 Preparation: add anhydrous ferric chloride and urea to the ethylene glycol solution at a ratio of 1:10, stir and mix to obtain a mixed solution, transfer the mixed solution into the reactor, react at 230°C for 2h, and take it out after cooling , Filter, wash, and dry to obtain the precursor, keep the precursor in an inert gas environment at 400℃ for 6h, and cool to obtain porous flower-like Fe 3 O 4 .

[0025] Carbon-based porous Fe 3 O 4 Preparation: take porous flower-like Fe at a mass ratio of 1:5 3 O 4 、The soluble starch was added to water, stirred rapidly for 30min, and nitrogen was introduced to remove oxygen for 20min, then transferred to the hydrothermal reactor, reacted at 200℃ for 15h, cooled and dried to obtain carbon-based porous Fe 3 O 4 .

[0026] Preparation of magnetic composite powder: Weigh 350g of carbon-based porous Fe 3 O 4 , 330g shell powder, 320g olivine are mixed, water is added to the ball mill and ball milled for 2h to obtain...

Embodiment 2

[0031] Porous Flower Fe 3 O 4 The preparation is the same as in Example 1, carbon-based porous Fe 3 O 4 The preparation is the same as in Example 1.

[0032] Preparation of magnetic composite powder: weigh 450g of carbon-based porous Fe 3 O 4 , 350g of shell powder and 200g of olivine are mixed, and water is added to a ball mill for 1.5h to obtain a magnetic composite powder.

[0033] Preparation of modified filler: weigh 150kg of graphite, 300kg of barite, and 200kg of hematite in a pulverizer to obtain a mixed filler powder, stir and mix the mixed filler powder with 365kg of biogas slurry, and seal and ferment at 35-40℃ After 8 days, the obtained fermented product was centrifuged and sterilized, and 32.5 kg of magnetic composite powder was added and mixed to obtain a modified filler.

[0034] Preparation of anti-segregation agent: Weigh 9.5g of acrylamide or sodium acrylate sulfonate, 25g of TPEG, 0.6g of γ-methacryloxypropyltrimethoxysilane and 25g of deionized water into the reac...

Embodiment 3

[0037] Porous Flower Fe 3 O 4 The preparation is the same as in Example 1, carbon-based porous Fe 3 O 4 The preparation is the same as in Example 1.

[0038] Preparation of magnetic composite powder: weigh 400g of carbon-based porous Fe 3 O 4 , 280g shell powder, 320g olivine are mixed, and water is added to a ball mill for 1.5h to obtain a magnetic composite powder.

[0039] Preparation of modified filler: weigh 150kg of graphite, 350kg of barite, 230kg of hematite, and pulverize in a pulverizer to obtain mixed filler powder. Stir and mix the mixed filler powder with 340kg of biogas slurry, and then seal and ferment at 35-40℃ After 10 days, the obtained fermented product was centrifuged and sterilized, and 36.5 kg of magnetic composite powder was added and mixed to obtain a modified filler.

[0040] Preparation of anti-segregation agent: Weigh 9.5 g of acrylamide or sodium acrylate sulfonate, 20 g of TPEG, 0.8 g of γ-methacryloxypropyl trimethoxysilane and 25 g of deionized water in...

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Abstract

The invention relates to the technical field of building materials, in particular to radiation-proof thermal insulation concrete and a preparation method thereof. The thermal insulation concrete is prepared from the following raw materials in parts by weight: 240-280 parts of cement, 260-300 parts of river sand, 80-100 parts of modified filler, 6-8 parts of bentonite, 26-30 parts of monazite, 0.3-0.5 part of a segregation resisting agent, 2-4 parts of a water reducer, 15-18 parts of cordierite honeycomb ceramic powder and 35-50 parts of water, wherein the modified filler contains magnetic compound powder, and the magnetic compound powder is a compound of carbon-based porous Fe3O4, shell powder and olivine, wherein the magnetic compound powder contains 35-45% of carbon-based porous Fe3O4, 25-35% of shell powder and 20-32% of olivine. The prepared thermal insulation concrete has a porous structure, anti-radiation and thermal insulation effects and the character of high segregation resistance performance at the same time, the application property is higher, and the radiation-proof thermal insulation concrete is not prone to crack.

Description

Technical field [0001] The invention relates to the technical field of building materials, in particular to a radiation-proof thermal insulation concrete and a preparation method thereof. Background technique [0002] Concrete is the main material for engineering construction. It has the advantages of low cost, high strength, and convenient construction. It is widely used in all aspects of infrastructure construction such as industry, civil, and transportation. With the vigorous development of my country's construction industry, the demand for building materials has increased rapidly. The annual demand for concrete in my country has reached more than 1.3 billion cubic meters. [0003] Nuclear technology has developed rapidly since its birth, and has been widely used in many fields such as nuclear power, education, scientific research, and medical treatment. However, its safety has always been the key to its further development. As we all know, a large number of alpha, beta, gamma ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02C04B38/02C04B111/40
CPCC04B28/02C04B2111/00258C04B2111/40C04B2201/50C04B14/024C04B14/368C04B14/308C04B18/18C04B14/06C04B14/104C04B14/02C04B18/023C04B14/28C04B14/04C04B24/124C04B24/42C04B24/16C04B22/147C04B24/06C04B24/18C04B24/38C04B22/062C04B22/068C04B38/02
Inventor 陈强周琰
Owner CHONGQING VOCATIONAL COLLEGE OF TRANSPORTATION
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