CN105203743A - Method for acquiring exhalation rate of radon in indoor environment by directly measuring building material sample blocks - Google Patents
Method for acquiring exhalation rate of radon in indoor environment by directly measuring building material sample blocks Download PDFInfo
- Publication number
- CN105203743A CN105203743A CN201510634676.0A CN201510634676A CN105203743A CN 105203743 A CN105203743 A CN 105203743A CN 201510634676 A CN201510634676 A CN 201510634676A CN 105203743 A CN105203743 A CN 105203743A
- Authority
- CN
- China
- Prior art keywords
- radon
- sample block
- building materials
- materials sample
- indoor environment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Measurement Of Radiation (AREA)
Abstract
Disclosed is a method for acquiring exhalation rate of radon in indoor environment by directly measuring building material sample blocks. The method includes: making building concrete into a cuboid concrete sample block identical with a floor in thickness, making a building brick and mortar into a cuboid brick-mortar sample block identical with a wall in thickness, and using a compact sealing material as a sealing layer to wrap and seal four sides of the concrete sample block and the brick-mortar sample block so as to obtain two building material sample blocks made of different materials; measuring the building material sample blocks made of the different materials respectively, and acquiring radon exhalation rate of the building material sample blocks according to a radon concentration increase curve acquired by measuring. The radon exhalation rate acquired by measuring according to the method is radon exhalation rate of the floor or the wall in the indoor environment formed by using the building material sample blocks as building materials.
Description
Technical field
The present invention relates to nuclear radiation detection technology, particularly a kind of method obtaining precipitation rate of radon in indoor environment by directly measuring building materials sample block.
Background technology
At present, measuring precipitation rate of radon in skyscraper indoor environment is all again at Indoor measurement after skyscraper completion.In indoor environment, radon mainly comes from the precipitation of soil and building material surface, for skyscraper, the precipitation of the radon of building material surface is the main source of Indoor Niton, because the ground of skyscraper, ceiling are all mainly concrete, and metope mainly brick block, control the precipitation rate of radon of building materials at the building initial stage, just can control to build the precipitation rate of radon in rear indoor environment.Therefore, building material surface precipitation rate of radon is the important indicator evaluating indoor radon concentration.
Building materials is made building materials sample block, measure the precipitation rate of radon of building materials sample block, its measurement result can be used for assessing precipitation rate of radon in the indoor environment that will build up.But for building materials sample block, because its size is less, much smaller than the diffusion length of radon in building materials, six faces from building materials sample block are separated out by radon.And for the ground of indoor, ceiling, metope, its size is comparatively large, be greater than the diffusion length of radon in building materials, radon mainly ground indoor, ceiling, metope two faces is separated out.Therefore, carry out directly measuring the precipitation rate of radon that the precipitation rate of radon obtained will be far smaller than indoor ground, ceiling, metope to building materials sample block, can not be used for directly assessing the precipitation rate of radon in the Building Indoor Environment that will build up.
Summary of the invention
The object of the invention is to overcome the above-mentioned deficiency of prior art and provide a kind of and directly measure by building materials sample block the method obtaining indoor environment precipitation rate of radon.
Technical scheme of the present invention is: a kind of method obtaining precipitation rate of radon in indoor environment by directly measuring building materials sample block, first carries out pre-service to building materials sample block, and then directly measure building materials sample block and obtain indoor environment precipitation rate of radon, its concrete steps are as follows:
A, build concrete made a rectangular parallelepiped coagulation soil sample block identical with slab thickness; Building brick and mortar are made the rectangular parallelepiped brick dust sample block identical with thickness of wall body;
B, can only floor indoor and metope two faces to separate out due to radon, with the encapsulant of densification as the four sides environmental sealing of sealant by coagulation soil sample block and brick dust sample block, sealant thickness 2mm ~ 2cm, thus obtained two kinds of unlike material building materials sample blocks, radon can only not separated out by the end face sealed from building materials sample block two;
Described encapsulant is fluid sealant, sealing compound and gasket coating common on market;
C, to be placed on by building materials sample block on support and to leave standstill 6 ~ 24 hours, adopt Multi-contact or linear contact lay between support and building materials sample block, can not adopt larger face contact, the diffusion of the radon in such guarantee building materials sample block is consistent with the diffusion of floor, body of wall;
D, respectively the building materials sample block of unlike material is measured, collection radon cover is held on building materials sample block, collect radon cover and emanometer and pump and form closed loop cycle, radon atom in building materials sample block is under diffusion with seepage effect, effusion building materials sample block surface enters the collecting chamber of collection radon cover, the measuring chamber that radon in collection radon cover collecting chamber pumps into emanometer is measured by pump, according to the precipitation rate of radon measuring the radon consistence upcurve that obtains and just can obtain building materials sample block, measure the precipitation rate of radon that the precipitation rate of radon obtained is exactly floor or metope in the indoor environment be made up of as building materials this building materials sample block in this manner.
The present invention compared with prior art has following features:
The present invention obtains precipitation rate of radon in indoor environment by directly measuring building materials sample block, its measuring process and computing method simple, result is accurate, can be used for directly assessing the precipitation rate of radon in the Building Indoor Environment that will build up, thus the precipitation rate of radon of control building materials.
Below in conjunction with the drawings and specific embodiments, detailed construction of the present invention is further described.
Accompanying drawing explanation
Accompanying drawing 1 is measuring process schematic diagram of the present invention;
Accompanying drawing 2 is concrete-containing building material sample block structure schematic diagram;
Accompanying drawing 3 is the vertical view in accompanying drawing 2;
Accompanying drawing 4 is brick dust building materials sample block structure schematic diagram;
Accompanying drawing 5 is the vertical view in accompanying drawing 4.
Embodiment
Obtaining a method for precipitation rate of radon in indoor environment by directly measuring building materials sample block, first carrying out pre-service to building materials sample block 5, then directly measure building materials sample block 5 and obtain indoor environment precipitation rate of radon, its concrete steps are as follows:
A, build concrete made a rectangular parallelepiped coagulation soil sample block 5-1 identical with slab thickness; Building brick and mortar are made the rectangular parallelepiped brick dust sample block 5-2 identical with thickness of wall body;
B, can only floor indoor and metope two faces to separate out due to radon, with the encapsulant of densification as the four sides environmental sealing of sealant 5-3 by coagulation soil sample block 5-1 and brick dust sample block 5-2, sealant 5-3 thickness 2mm ~ 2cm, thus obtained two kinds of unlike material building materials sample blocks 5, radon can only not separated out by the end face sealed from building materials sample block 5 two;
Described encapsulant is common fluid sealant, sealing compound and gasket coating on market, and the present embodiment selects epoxide-resin glue as encapsulant;
C, building materials sample block 5 is placed on support 4 and leaves standstill 6 ~ 24 hours, Multi-contact or linear contact lay is adopted between support 4 and building materials sample block 5, can not adopt larger face contact, the diffusion of the radon in such guarantee building materials sample block 5 is consistent with the diffusion of floor, body of wall;
D, respectively the building materials sample block 5 of unlike material is measured, collection radon cover 1 is held on building materials sample block 5, collection radon cover 1 forms closed loop cycle with emanometer 2 and pump 3, radon atom in building materials sample block 5 is under diffusion with seepage effect, effusion building materials sample block 5 surface enters the collecting chamber of collection radon cover 1, the measuring chamber that radon in collection radon cover 1 collecting chamber pumps into emanometer 2 is measured by pump 3, according to the precipitation rate of radon measuring the radon consistence upcurve that obtains and just can obtain building materials sample block 5, measure the precipitation rate of radon that the precipitation rate of radon obtained is exactly floor or metope in the indoor environment be made up of as building materials this building materials sample block 5 in this manner.
Claims (2)
1. obtaining a method for precipitation rate of radon in indoor environment by directly measuring building materials sample block, it is characterized in that: first carry out pre-service to building materials sample block, then directly measure building materials sample block and obtain indoor environment precipitation rate of radon, its concrete steps are as follows:
A, build concrete made a rectangular parallelepiped coagulation soil sample block identical with slab thickness; Building brick and mortar are made the rectangular parallelepiped brick dust sample block identical with thickness of wall body;
B, can only floor indoor and metope two faces to separate out due to radon, with the encapsulant of densification as the four sides environmental sealing of sealant by coagulation soil sample block and brick dust sample block, sealant thickness 2mm ~ 2cm, thus obtained two kinds of unlike material building materials sample blocks, radon can only not separated out by the end face sealed from building materials sample block two;
C, to be placed on by building materials sample block on support and to leave standstill 6 ~ 24 hours, adopt Multi-contact or linear contact lay between support and building materials sample block, can not adopt larger face contact, the diffusion of the radon in such guarantee building materials sample block is consistent with the diffusion of floor, body of wall;
D, respectively the building materials sample block of unlike material is measured, collection radon cover is held on building materials sample block, collect radon cover and emanometer and pump and form closed loop cycle, radon atom in building materials sample block is under diffusion with seepage effect, effusion building materials sample block surface enters the collecting chamber of collection radon cover, the measuring chamber that radon in collection radon cover collecting chamber pumps into emanometer is measured by pump, according to the precipitation rate of radon measuring the radon consistence upcurve that obtains and just can obtain building materials sample block, measure the precipitation rate of radon that the precipitation rate of radon obtained is exactly floor or metope in the indoor environment be made up of as building materials this building materials sample block in this manner.
2. a kind of method obtaining precipitation rate of radon in indoor environment by directly measuring building materials sample block as claimed in claim 1, is characterized in that: described encapsulant is fluid sealant, sealing compound and gasket coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510634676.0A CN105203743A (en) | 2015-09-30 | 2015-09-30 | Method for acquiring exhalation rate of radon in indoor environment by directly measuring building material sample blocks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510634676.0A CN105203743A (en) | 2015-09-30 | 2015-09-30 | Method for acquiring exhalation rate of radon in indoor environment by directly measuring building material sample blocks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105203743A true CN105203743A (en) | 2015-12-30 |
Family
ID=54951529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510634676.0A Pending CN105203743A (en) | 2015-09-30 | 2015-09-30 | Method for acquiring exhalation rate of radon in indoor environment by directly measuring building material sample blocks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105203743A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109254314A (en) * | 2018-11-15 | 2019-01-22 | 衡阳师范学院 | Annular electrode improves positively charged218The measurement chamber and method of Po collection efficiency |
| CN109254313A (en) * | 2018-11-15 | 2019-01-22 | 衡阳师范学院 | Multi-detector improves positively charged218The measurement chamber and method of Po collection efficiency |
| CN109307880A (en) * | 2018-11-15 | 2019-02-05 | 衡阳师范学院 | Multi-electrode improves positively charged218The measurement chamber and method of Po collection efficiency |
| CN109655857A (en) * | 2018-12-14 | 2019-04-19 | 衡阳师范学院 | Annular electrode improves Radon Exhalation Rate Measuring Apparatus pair218The measurement chamber and method of Po collection efficiency |
| CN109655858A (en) * | 2018-12-14 | 2019-04-19 | 衡阳师范学院 | Multi-electrode improves Radon Exhalation Rate Measuring Apparatus pair218The measurement chamber and method of Po collection efficiency |
| CN109655859A (en) * | 2018-12-14 | 2019-04-19 | 衡阳师范学院 | Multi-detector improves Radon Exhalation Rate Measuring Apparatus pair218The measurement chamber and method of Po collection efficiency |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644700A (en) * | 2008-12-10 | 2010-02-10 | 南华大学 | Method and device for measuring radon exhalation rate on medium surface |
| CN201575961U (en) * | 2009-12-09 | 2010-09-08 | 深圳市建筑科学研究院有限公司 | Radon exhalation rate testing chamber for building materials |
| CN201897560U (en) * | 2010-11-18 | 2011-07-13 | 广州市建筑材料工业研究所有限公司 | Test chamber for radon exhalation rate from surface of building material |
| CN102156181A (en) * | 2011-05-04 | 2011-08-17 | 常州市建筑科学研究院有限公司 | Device and method for detecting radon exhalation rate of surface of building material |
| CN203299395U (en) * | 2013-06-05 | 2013-11-20 | 郑州三和谷环保科技有限公司 | Intelligent detecting system of building material surface radon exhalation rate |
-
2015
- 2015-09-30 CN CN201510634676.0A patent/CN105203743A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644700A (en) * | 2008-12-10 | 2010-02-10 | 南华大学 | Method and device for measuring radon exhalation rate on medium surface |
| CN201575961U (en) * | 2009-12-09 | 2010-09-08 | 深圳市建筑科学研究院有限公司 | Radon exhalation rate testing chamber for building materials |
| CN201897560U (en) * | 2010-11-18 | 2011-07-13 | 广州市建筑材料工业研究所有限公司 | Test chamber for radon exhalation rate from surface of building material |
| CN102156181A (en) * | 2011-05-04 | 2011-08-17 | 常州市建筑科学研究院有限公司 | Device and method for detecting radon exhalation rate of surface of building material |
| CN203299395U (en) * | 2013-06-05 | 2013-11-20 | 郑州三和谷环保科技有限公司 | Intelligent detecting system of building material surface radon exhalation rate |
Non-Patent Citations (3)
| Title |
|---|
| 吕丽丹等: "活性炭盒法准确测量建材222Rn析出率的研究", 《南华大学学报( 自然科学版)》 * |
| 张磊等: "建材氡析出率及其测量的一点思考", 《辐射防护》 * |
| 雷兴等: "密闭腔体法准确测量建材氡析出率比较研究", 《辐射防护》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109254314A (en) * | 2018-11-15 | 2019-01-22 | 衡阳师范学院 | Annular electrode improves positively charged218The measurement chamber and method of Po collection efficiency |
| CN109254313A (en) * | 2018-11-15 | 2019-01-22 | 衡阳师范学院 | Multi-detector improves positively charged218The measurement chamber and method of Po collection efficiency |
| CN109307880A (en) * | 2018-11-15 | 2019-02-05 | 衡阳师范学院 | Multi-electrode improves positively charged218The measurement chamber and method of Po collection efficiency |
| CN109655857A (en) * | 2018-12-14 | 2019-04-19 | 衡阳师范学院 | Annular electrode improves Radon Exhalation Rate Measuring Apparatus pair218The measurement chamber and method of Po collection efficiency |
| CN109655858A (en) * | 2018-12-14 | 2019-04-19 | 衡阳师范学院 | Multi-electrode improves Radon Exhalation Rate Measuring Apparatus pair218The measurement chamber and method of Po collection efficiency |
| CN109655859A (en) * | 2018-12-14 | 2019-04-19 | 衡阳师范学院 | Multi-detector improves Radon Exhalation Rate Measuring Apparatus pair218The measurement chamber and method of Po collection efficiency |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105203743A (en) | Method for acquiring exhalation rate of radon in indoor environment by directly measuring building material sample blocks | |
| CN105203410B (en) | A kind of experimental rig for being used to measure rock shearing creep properties | |
| WO2017028716A1 (en) | Nondestructive detection method for concrete anti-permeability | |
| CN104316144B (en) | A kind of visualization measurement method of level of ground water under condition of negative pressure | |
| CN104569341A (en) | Vacuum preloading and electroosmosis combined testing device and vacuum preloading and electroosmosis combined testing method | |
| CN104264719A (en) | Vacuum preloading indoor model testing apparatus | |
| CN104849193A (en) | Device and method for measuring permeability coefficient of cement-soil | |
| CN104155434B (en) | The analytical approach of On Pattern of Concrete Carbonization and test unit under continuous humidity atmosphere | |
| CN105118363A (en) | Test method and model for simulating impervious curtain between concrete and bedrock | |
| CN104359800B (en) | Detect that antiseepage curtain wall stops the laboratory testing rig of ion diffusion effect | |
| CN103389251A (en) | A compression strength rebound detecting method for pumping mountain sand and concrete | |
| CN106093348A (en) | Tubulose EKG layer enters formula electrochemistry slip casting reinforcing soft foundation test method and device | |
| Shahreza et al. | Novel water penetration criterion for clay brick masonry claddings | |
| CN102156181A (en) | Device and method for detecting radon exhalation rate of surface of building material | |
| CN106706498A (en) | Steady state water permeability coefficient testing device and method of concrete type material | |
| CN108760583B (en) | Device and method for testing radon exhalation rate and neutral radon exhalation rate of building block | |
| CN204589977U (en) | A kind of Soft Ground Improved By Vacuum Preloading process vacuum under-membrance vacuum degree automatic monitoring system | |
| CN201773046U (en) | Weathered mechanical property tester for rock and soil mass | |
| CN204536146U (en) | The total suction field measurement apparatus of a kind of soil based on filter paper method | |
| CN109520905A (en) | A kind of permeable heterogeneity measurement device of pervious concrete and its test method | |
| CN203203990U (en) | Testing device for cement setting time under high-temperature condition | |
| CN206638555U (en) | A kind of water permeability coefficient of water permeable brick test device simple to operate | |
| CN109556931A (en) | Soil cement cutting ring sample preparation facilities and permeability coefficient of cement soil measuring method, equipment | |
| CN104181288B (en) | Analyze the method for On Pattern of Concrete Carbonization under continuous humidity atmosphere | |
| CN105424543B (en) | A kind of soil gas conductivity stable state measuring method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151230 |
|
| RJ01 | Rejection of invention patent application after publication |