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Anti-radiation hematite brick, anti-radiation hematite mortar and method for constructing shielding wall by using the two

A construction method and radiation protection technology, applied in the processing of walls, building materials, building components, etc., can solve the problem of small demand for one-time radiation-proof concrete for radiation-proof holes, high cost of radiation-shielding concrete, and concrete quality control Increased difficulty and other issues, to achieve the effect of reducing the demand for slurry, maintaining the fluidity state for a long time, and saving cement consumption

Inactive Publication Date: 2021-04-13
CHINA NUCLEAR IND HUAXING CONSTR +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The walls of the equipment rooms that are exposed to radioactive substances inside the nuclear power plant reactor use radiation-proof concrete isolation shielding walls. Equipment needs to be installed in these rooms, but the equipment has not been installed in time during civil construction, and holes for entering the equipment need to be reserved. After the equipment is installed, The reserved holes need to be blocked with radiation-proof materials. Usually, at this time, the civil construction above the room has been completed. If concrete construction is used, it is difficult to build the pumped concrete pipeline to the position of the room. Moreover, the one-time radiation protection of the radiation-proof holes The demand for concrete is generally small. During pumping construction, the concrete that cannot be used in the pumping concrete pipeline will be wasteful (the cost of radiation shielding concrete is very high), and only manual mixing of concrete or concrete pumping to the outside of the structure will result in manual transportation. to the construction location, but such construction has the problems of high construction cost and increased difficulty in concrete quality control
Moreover, after the equipment is put into operation, if a fault occurs to repair or replace the equipment, the equipment needs to be removed. At this time, the wall surface needs to be removed. After the equipment is put in place again, concrete needs to be poured again to restore the wall surface. high

Method used

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  • Anti-radiation hematite brick, anti-radiation hematite mortar and method for constructing shielding wall by using the two
  • Anti-radiation hematite brick, anti-radiation hematite mortar and method for constructing shielding wall by using the two
  • Anti-radiation hematite brick, anti-radiation hematite mortar and method for constructing shielding wall by using the two

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of anti-radiation hematite brick, its preparation comprises the following steps:

[0027] S1. Prepare raw materials according to the following components and mass content: 100 parts of Portland cement; 34 parts of mixing water; 1.70 parts of high-performance water reducer; 42 parts of Class I fly ash; ) 155 parts; hematite sand (2-5 mm in particle size) 190 parts; hematite ore (5-25 mm in particle size) 550 parts;

[0028] S2. Add 550 parts of hematite ore (5-25 mm in particle size), 155 parts of hematite sand (below 2 mm in particle size) and 190 parts of hematite sand (2-5 mm in particle size) into the agitator and mix evenly. Then add 100 parts of Portland cement, 42 parts of grade I fly ash and 34 parts of mixing water and stir for 30 seconds, and finally add 1.70 parts of high-performance water reducer, stir with the mixer for 150 seconds, and stir evenly to make the mixture slump Fall reaches 140±30mm;

[0029] S3, inject the uniformly stirred mixture in ...

Embodiment 2

[0033] A kind of anti-radiation hematite brick, its preparation comprises the following steps:

[0034] S1. Prepare raw materials according to the following components and mass content: 100 parts of Portland cement; 20 parts of mixing water; 2.42 parts of high-performance water reducer; 42 parts of Class I fly ash; ) 157 parts; hematite sand (2-5mm in particle size) 192 parts; hematite ore (5-25mm in particle size) 558 parts;

[0035] S2, 558 parts of hematite ore (particle diameter 5~25mm), 157 parts of hematite sand (below 2mm in particle diameter) and 192 parts of hematite sand (particle diameter 2~5mm) are added into agitator and mixed evenly, Then add 100 parts of Portland cement, 42 parts of grade I fly ash and 20 parts of mixing water and stir for 30 seconds, and finally add 2.42 parts of high-performance water reducer, stir with the mixer for 150 seconds, and stir evenly to make the mixture slump Fall reaches 140±30mm;

[0036] S3, inject the uniformly stirred mixtur...

Embodiment 3

[0040] A kind of anti-radiation hematite brick, its preparation comprises the following steps:

[0041] S1. Prepare raw materials according to the following components and mass content: 100 parts of Portland cement; 40 parts of mixing water; 0.99 parts of high-performance water reducer; 42 parts of Class I fly ash; ) 154 parts; hematite sand (2-5 mm in particle size) 188 parts; hematite ore (5-25 mm in particle size) 547 parts;

[0042] S2. Add 547 parts of hematite ore (5-25 mm in particle size), 154 parts of hematite sand (below 2 mm in particle size) and 188 parts of hematite sand (2-5 mm in particle size) into the agitator and mix evenly. Then add 100 parts of Portland cement, 42 parts of grade I fly ash and 40 parts of mixing water and stir for 30 seconds, and finally add 0.99 parts of high-performance water reducer, stir with the mixer for 150 seconds, and stir evenly to make the mixture slump Fall reaches 140±30mm;

[0043] S3, inject the uniformly stirred mixture in ...

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Abstract

The invention discloses an anti-radiation hematite brick, anti-radiation hematite mortar and a method for constructing a shielding wall by using the anti-radiation hematite brick and the anti-radiation hematite mortar. The anti-radiation shielding wall breaks through the mode of pouring the shielding wall by using concrete for a long time; the hematite brick is prepared by stirring raw materials to required slump in a fixed place according to a specific mixing ratio of the raw materials, injecting the mixture into a mold, performing vibrating, compacting and hardening and removing the mold; the hematite mortar is prepared by mixing and stirring the raw materials according to a specific mixing ratio; and the shielding wall is manufactured by lofting, watering, wire suspension and laying the hematite bricks. The bricklaying method comprises the following steps of: implanting reinforcing steel bars for fixing at proper positions between newly-built hematite brick wall bricks and an old wall ; and during construction, filling the hematite mortar between the hematite bricks and the bricks. A proper amount of fly ash is added into the hematite bricks and the hematite mortar, so that the workability is better, and the construction is more convenient; the hematite bricks are detachable and reusable, construction is simplified, production cost is reduced, and the wall is high in density, high in anti-radiation shielding capacity and particularly suitable for being used in narrow space parts.

Description

technical field [0001] The invention belongs to the technical field of construction engineering, and in particular relates to a radiation-proof hematite brick, a hematite mortar and a method for constructing a shielding wall using the two. Background technique [0002] The walls of the equipment rooms that are exposed to radioactive substances inside the nuclear power plant reactor use radiation-proof concrete isolation shielding walls. Equipment needs to be installed in these rooms, but the equipment has not been installed in time during civil construction, and holes for entering the equipment need to be reserved. After the equipment is installed, The reserved holes need to be blocked with radiation-proof materials. Usually, at this time, the civil construction above the room has been completed. If concrete construction is used, it is difficult to build the pumped concrete pipeline to the position of the room. Moreover, the one-time radiation protection of the radiation-proo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04E04B1/92E04B2/02E04C1/00E04G21/00
CPCC04B28/04E04C1/00E04B2/02E04B1/92E04G21/00C04B2201/20C04B2201/50C04B2201/52E04B2001/925
Inventor 王龙沈益军
Owner CHINA NUCLEAR IND HUAXING CONSTR
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