CN1611459A - Radon-proof and antiradiation masonry cement - Google Patents
Radon-proof and antiradiation masonry cement Download PDFInfo
- Publication number
- CN1611459A CN1611459A CN 200310110824 CN200310110824A CN1611459A CN 1611459 A CN1611459 A CN 1611459A CN 200310110824 CN200310110824 CN 200310110824 CN 200310110824 A CN200310110824 A CN 200310110824A CN 1611459 A CN1611459 A CN 1611459A
- Authority
- CN
- China
- Prior art keywords
- radon
- cement
- proof
- barite
- masonry cement
- 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
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a kind of radon-proof and radiation-proof masonry cement, which belongs to water-hardness cement technique field. It is composed with barite, zeolite, quick lime, gypsum, and cement grog. The components and the weight percentage contents are that as follows: gypsum 2-6%, grog 35-55%, quick lime 5-20%, barite 15-25%, zeolite 12-20%. The masonry cement has radon-proof and radiation-proof function, simple production technology, and low cost.
Description
(1) technical field: the present invention relates to a kind of radon proof and radiation protection masonry cement, belong to the hydraulic cement technical field.
(2) background technology: China is vast in territory, and the geologic framework complexity is in the soil
238U and
232The specific activity of Th exceeds world's average, and high radon area is many.Radioactive rays and radon release concentration are higher in the material of construction of certain areas (brick, stone material, cement etc.).Through the survey showed that to 43000 dwelling houses, national dwelling house radon content average out to 124Bq/m
3, wherein 21% dwelling house surpasses 150Bq/m
3, 5% surpasses 400Bq/m
3, 19% surpasses 740Bq/m
3The radon investigation that China carries out 37 underground workss in 5 areas has 54% to exceed standard.70～eighties is carried out four malignant tumour generaI investigations in Yunnan, and its lung cancer morbidity rate occupies the hat in the whole nation up to 217.2 people/100,000 people.World soil mean value (7400Bq/m
3) and the average content (12～108Bq/m of various countries, west Indoor Niton
3), the survey showed that in the Kunming, and investigated room radon concentration reaches 32.6～644.5Bq/m
3, and radon concentration reaches 710Bq/m in the Changsha underground structure
3, radon concentration reaches 1080Bq/m in the underground structure, Hengyang, Hunan
3Therefore; exploitation and use radon proof and radiation protection masonry cement (be used to prepare buildings or structures puzzle joint and touch the face mortar); reduce radioactive rays and radon release concentration in buildings or the structures, necessary for the protection people ' s health, be of great immediate significance.
(3) summary of the invention:
1, goal of the invention: task of the present invention is that extensive at the masonry cement consumption, the present situation of insufficiency of function by the change to cement component and consumption, provides a kind of masonry cement with radon proof and radiation protection function.
2, technical scheme:
A kind of radon proof and radiation protection masonry cement, its composition and weight percentage are: gypsum 2～6%, grog 35～55%, unslaked lime 5～20%, barite 15%～25%, zeolite 12～20%.
Barite in the above-mentioned composition is the radioprotective elementary material, and it is a kind of natural mineral that contains the barium sulfate of hexagon crystalline structure.
Zeolite in the above-mentioned composition is anti-radon elementary material, and it is a kind of natural mineral with regular micropore and/or pore.The diameter of its pore size and molecule is close, because of containing cavity and pipeline in the internal structure, and electrically uneven, so have bigger surface energy, can adsorb lay bricks, the radon gas of stone material and the release of other material of construction.
The present invention can realize that the reason of its purpose is:
(1) because mix the radioprotective elementary material in this masonry cement, its radioprotective elementary material is natural mineral or the industrial by-products that contains heavy metal element, as natural barite.Heavy metal element can absorb χ ray and gamma-rays.The barite main component is barium sulfate (BaSO4).Pure barite is white, and is glossy, because the influence of impurity and tramp material also gray, light red, light yellow etc.The barite chemical property is stable, water insoluble and hydrochloric acid, nonmagnetic and toxicity.Radiation proof cement, mortar and concrete utilize barite to have the χ ray of absorption and gamma-ray character, are made into barium cement, barite mortar and baryte concrete, can alternative metals aluminium sheet shielded nucleus reactor and the ray-proof buildings of construction.The barite mortar is that a kind of unit weight is bigger, χ ray and gamma-rays is had the mortar of iris action.The present invention promptly utilizes barite to absorb χ ray and gamma-ray character, and barite is added as a kind of adulterant, makes masonry cement have radiation protection ability.
(2) the anti-radon elementary material that mixes in the masonry cement, anti-radon elementary material is natural or artificial porous adsorbing material, utilizes its ion-exchange capacity, selects commutativity and adsorptivity, absorption radon gas and the fixing radon gas descendant that absorbs.Natural zeolite is the hydrous alumino silicates mineral of basic metal and alkaline-earth metal.It is open bigger silica, a kind of tectosilicate structure that aluminum-oxygen tetrahedron is formed, and a lot of uniform cavitys and hole are arranged.In cavity and the hole Ca is arranged
++, Na
+, K
+Deng the water molecules that can freely break away from, adsorb under positively charged ion and the certain condition.A little less than positively charged ion in the skeleton and skeleton are got in touch, easily by other cationic exchange.Concerning the zeolite of certain kind, positively charged ion and locations of structures thereof are certain, and the diameter of cavity and hole also is certain.Therefore, zeolite has stronger ion-exchange capacity, selects commutativity and adsorptivity, and the influence of not raying.As: when transformation period of containing fission product in radwaste during very long this class material, they must being stored into changes in quality could get rid of for after the steady state.Because the waste material amount is big, the storage time is long, is difficult to accomplish not leak for a long time.More feasible method is that this class isotopic ion is exchanged in the natural zeolite crystal.Exchanged the zeolite of isotopic ion, after its fusing, isotopic ion can be permanently affixed in its lattice, thereby prevents its diffusion.
3, beneficial effect: the present invention has compared following advantage with existing masonry cement:
(1) radiation protection ability is strong, has the stronger energy that absorbs ray that stops, can absorb fully alpha-ray, β ray, χ ray, gamma-rays is had stop attenuation significantly.
(2) anti-radon performance is good, and has permanent anti-radon performance.
(3) technology is simple, and the present invention need not to acquire specific equipment, and operation is easy, easily operation.
(4) embodiment: the invention will be further described below in conjunction with embodiment.
Following table is several embodiments of the present invention:
| Sample number into spectrum | Gypsum (mass percent/%) | 325# cement (mass percent/%) | Unslaked lime (mass percent/%) | Barite (mass percent/%) | Zeolite (mass percent/%) |
| ??1 | ??3 | ????42 | ??20 | ??15 | ????20 |
| ??2 | ??4 | ????55 | ??5 | ??18 | ????18 |
| ??3 | ??2 | ????45 | ??17 | ??20 | ????16 |
| ??4 | ??3 | ????48 | ??13 | ??22 | ????14 |
| ??5 | ??6 | ????39 | ??19 | ??24 | ????12 |
| ??6 | ??5 | ????35 | ??15 | ??25 | ????20 |
Following table is the corresponding radon proof and radiation protection performance that goes up masonry cement in the table:
| Sample number into spectrum | Shielding property | Anti-radon performance | ||
| Internal radiation index I Ra | External radiation exposure index Ir | Anti-radon rate/% | ||
| ????1 | ????0.22 | ????0.17 | ????0.17 | ????87.88 |
| ????2 | ????0.18 | ????0.18 | ????0.19 | ????84.25 |
| ????3 | ????0.16 | ????0.17 | ????0.17 | ????82.15 |
| ????4 | ????0.12 | ????0.19 | ????0.15 | ????77.29 |
| ????5 | ????0.13 | ????0.16 | ????0.16 | ????76.54 |
| ????6 | ????0.12 | ????0.15 | ????0.15 | ????88.62 |
Radon proof and radiation protection masonry cement of the present invention is divided into 175# cement, two labels of 275# cement.The mass percent of grog is 175# cement between 35% ~ 45% in the masonry cement, and the mass percent of grog is 275# cement between 45% ~ 55%.
After testing, find that fineness, stability, time of coagulation, flowability, anti-folding, resistance to compression have all reached the requirement of 175# in the standard of GB/T3183-1997 masonry cement or 275# cement, see the following form 1 with table 2.
Table 1
| Numbering | Ultimate compression strength | Folding strength | ??SO 3 | Bleeding | Stability | Reach label | ||
| 7 days | 28 days | 7 days | 28 days | |||||
| ??1 | ??9.5 | ????19 | ??2.5 | ??5.5 | ??2.7％ | ????5％ | Qualified | ??175 |
| ??2 | ??14.0 | ????29 | ??3.0 | ??6.5 | ??2.8％ | ????5.5％ | Qualified | ??275 |
| ??3 | ??13.5 | ????28 | ??3.0 | ??6.0 | ??2.4％ | ????6％ | Qualified | ??275 |
| ??4 | ??13.5 | ????28.5 | ??3.0 | ??6.0 | ??2.7％ | ????8％ | Qualified | ??275 |
| ??5 | ??9.0 | ????18.5 | ??2.0 | ??5.0 | ??3.2％ | ????9％ | Qualified | ??175 |
| ??6 | ??9.0 | ????18 | ??2.0 | ??4.5 | ??3.0％ | ????5％ | Qualified | ??175 |
Table 2
| Numbering | Time of coagulation | Fineness/80 μ m square hole sieve screen over-sizes (%) |
| ??1 | Initial set 2 hours 10 minutes, final set 4 hours 20 minutes | ????5 |
| ??2 | Initial set 2 hours 30 minutes, final set 4 hours 30 minutes | ????6 |
| ??3 | Initial set 2 hours, final set 4 hours 10 minutes | ????8 |
| ??4 | Initial set 2 hours 15 minutes, final set 4 hours 20 minutes | ????6 |
| ??5 | Initial set 2 hours 55 minutes, final set 5 hours | ????7 |
| ??6 | Initial set 2 hours 50 minutes, final set 4 hours 45 minutes | ????7 |
The production process of product of the present invention is: raw material through pulverizing, modification, batching, combined grinding (80 μ m square hole sieves, must not tail over surpass 10%), be packaged into product.
Claims (2)
1, a kind of radon proof and radiation protection masonry cement, the weight percentage of its composition and each component is:
A, barite 15～25;
B, zeolite 12～20;
C, gypsum 2～6;
D, cement clinker 35～55;
E, unslaked lime 5～20.
2, radon proof and radiation protection masonry cement according to claim 1 is characterized in that, the best proportioning of its radon proof and radiation protection performance is: gypsum 5%, grog 35%, unslaked lime 15%, barite 25%, zeolite 20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310110824 CN1611459A (en) | 2003-10-31 | 2003-10-31 | Radon-proof and antiradiation masonry cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310110824 CN1611459A (en) | 2003-10-31 | 2003-10-31 | Radon-proof and antiradiation masonry cement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1611459A true CN1611459A (en) | 2005-05-04 |
Family
ID=34759240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310110824 Pending CN1611459A (en) | 2003-10-31 | 2003-10-31 | Radon-proof and antiradiation masonry cement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1611459A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353233B (en) * | 2008-08-01 | 2010-08-11 | 湖南合磷化工有限公司 | Radiation protection cement and sulphuric acid production method |
| CN101456715B (en) * | 2008-12-25 | 2012-07-18 | 清华大学 | Boron-containing radioactive spent resin cement solidification method |
| CN103050164A (en) * | 2011-10-13 | 2013-04-17 | 北京朗新明环保科技有限公司 | Radon-proof radiation-proof plate |
| CN105948608A (en) * | 2016-04-16 | 2016-09-21 | 南通蛇类治疗研究所 | Ecologically healthy environment-friendly cement |
| CN106316173A (en) * | 2016-08-28 | 2017-01-11 | 葛洲坝石门特种水泥有限公司 | Weight-increasing anti-radiation cement for nuclear power project |
-
2003
- 2003-10-31 CN CN 200310110824 patent/CN1611459A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353233B (en) * | 2008-08-01 | 2010-08-11 | 湖南合磷化工有限公司 | Radiation protection cement and sulphuric acid production method |
| CN101456715B (en) * | 2008-12-25 | 2012-07-18 | 清华大学 | Boron-containing radioactive spent resin cement solidification method |
| CN103050164A (en) * | 2011-10-13 | 2013-04-17 | 北京朗新明环保科技有限公司 | Radon-proof radiation-proof plate |
| CN103050164B (en) * | 2011-10-13 | 2015-07-22 | 北京朗新明环保科技有限公司 | Radon-proof radiation-proof plate |
| CN105948608A (en) * | 2016-04-16 | 2016-09-21 | 南通蛇类治疗研究所 | Ecologically healthy environment-friendly cement |
| CN106316173A (en) * | 2016-08-28 | 2017-01-11 | 葛洲坝石门特种水泥有限公司 | Weight-increasing anti-radiation cement for nuclear power project |
| CN106316173B (en) * | 2016-08-28 | 2018-08-24 | 葛洲坝石门特种水泥有限公司 | A kind of nuclear power engineering exacerbation radiation proof cement |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2013018695A (en) | Method and use of organic and mineral admixtures for emi and radioactive isotope shielding of building materials such as glass fiber wall coverings, reflective ceiling insulation and electrically conductive or resistive, high performance, high strength concrete | |
| Saleh et al. | Mechanical and physical characterization of cement reinforced by iron slag and titanate nanofibers to produce advanced containment for radioactive waste | |
| US20150245547A1 (en) | Method and use of organic and mineral admixtures for EMI and radioisotope shielding of air filtration media and building materials, for absorption of airborne particulates and for climate change mitigation | |
| CN102584124A (en) | Technology for preparing zeolite-containing inorganic insulation mortar | |
| CN104987014A (en) | Radiation-shielding concrete adopting lead-zinc tailings as raw material and preparation method therefor | |
| CN112645323B (en) | Preparation method of cocklebur fruit shell based biomass charcoal adsorbent and application of cocklebur fruit shell based biomass charcoal adsorbent in adsorption of radioactive radon gas | |
| CN102942341A (en) | Alkalescent diatom ooze wall material and preparation method thereof | |
| CN108034322B (en) | Fireproof coating and preparation method thereof | |
| CN102659337B (en) | Composite Portland cement using green mud and basalt as mixed materials | |
| CN106433668A (en) | Heavy metal pollution soil restoration agent and use method thereof | |
| CN113121171A (en) | Radiation-proof self-compacting concrete and preparation method thereof | |
| Öztürk et al. | Gamma and neutron attenuation properties of alkali-activated cement mortars | |
| CN103000242A (en) | High-performance radiation-shielding concrete | |
| CN1611459A (en) | Radon-proof and antiradiation masonry cement | |
| CN101767968A (en) | High-performance radiation-shielding concrete material | |
| CN111635168B (en) | High-stability composite geological cement for nuclide solidification and application method thereof | |
| CN104030584B (en) | A kind of radiation proof cement and preparation method thereof | |
| CN103714871B (en) | A kind of preparation method of bentonite base radiation proof material | |
| He et al. | Research on the additives to reduce radioactive pollutants in the building materials containing fly ash | |
| Ejeckam et al. | A^ 1^ 3^ 3Cs,^ 2^ 9Si, and^ 2^ 7Al MAS NMR spectroscopic study of Cs adsorption by clay minerals: implications for the disposal of nuclear wastes | |
| CN105948608A (en) | Ecologically healthy environment-friendly cement | |
| CN1590472A (en) | Ecological type anti radon anti radiation environmental protection construction putty and its paint compound | |
| EA029640B1 (en) | Mixture of raw materials used for the production of porous building material based on calcium silicate | |
| Aghajanian et al. | Colemanite filler from wastes in recycled concrete | |
| Sersale et al. | Natural zeolites as constituents of blended cements |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |