CN103588433A - Formula for fixing solid radioactive wastes by using cement mortar - Google Patents
Formula for fixing solid radioactive wastes by using cement mortar Download PDFInfo
- Publication number
- CN103588433A CN103588433A CN201310566957.8A CN201310566957A CN103588433A CN 103588433 A CN103588433 A CN 103588433A CN 201310566957 A CN201310566957 A CN 201310566957A CN 103588433 A CN103588433 A CN 103588433A
- Authority
- CN
- China
- Prior art keywords
- formula
- fixing
- cement mortar
- sand
- solid
- 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.)
- Granted
Links
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The invention belongs to the field of radioactive waste processing and provides a formula for fixing solid radioactive wastes by using cement mortar in order to solve the problems that existing formulas for fixing low and intermediate level solid radioactive wastes by using cement mortar has lower fixer compressive strength, the temperature rise in a setting and hardening process is higher, and the like. The formula comprises components of 82.5-grade cement, mixed artificial quartz sand with different granularity, a polycarboxylate superplasticizer, a retarder 25 which is produced by the Sika limited company in China and water. A fixer prepared with the formula for fixing the solid radioactive wastes by using the cement mortar is high in compressive strength and good in anti-permeability; the cement mortar has lower setting and hardening temperature rise and very good self-leveling performance; and according to the formula, the components are simple, the cost is low, and the curing operation is easy to master.
Description
Technical field
The invention belongs to radwaste process field, particularly the fixing formula of a kind of solid radwaste sand-cement slurry.
Background technology
In nuclear industry field, the links such as retired of the production of nuclear fuel, the operation of Nuclear power plants, nuclear fuel reprocessing and nuclear installation all can produce a large amount of solid radwastes; And the application of radioactive substance in the numerous areas such as scientific research, industrial production, medical science and safety check, also can a certain amount of solid radwaste of corresponding generation.
Because radwaste can cause environmental pollution, therefore for radioactive level, higher than the radwaste of exempting threshold value, all need to take certain measure to dispose.And in order to reduce migration or the disperse of the radionuclide that may cause due to natural process during storing, transport and disposing, before radioactive waste disposal, conventionally need to be fixed it.For in low putting for solid waste, sand-cement slurry is fixedly one of fixing means of commonly using the most.
For improving fixed effect, guarantee the safe, controlled of radwaste, conventionally require fixed body should possess higher performance index.Yet, currently for the fixing low fixing formula of sand-cement slurry of putting solid waste, in part main performance index (as the temperature rise in fixed body ultimate compression strength, setting and harden process etc.), also there is certain deficiency.For example, center Environmental Protection in Sichuan Province engineering limited liability company once adopted river oil span board cement to carry out fixedly on-site verification work of cement, and its main performance index is as follows: (1) mortar degree of mobilization >=260mm; (2) presetting period >=2h; (3) final setting time≤18h; (4) ultimate compression strength >=7.0MPa.By these data, can be found out, its main performance index is still not ideal enough, especially, aspect topmost ultimate compression strength, still needs to do larger improvement.
Although also have some abroad about the report of the fixing formula of solid radwaste sand-cement slurry, most performance index are comparatively general; Occasionally have performance index still can formula, but because its definite composition is not open, cannot not be applied.Therefore, need the sand-cement slurry that a kind of performance index of exploitation are higher badly and fix formula to be suitable for the fixing of solid radwaste.
Summary of the invention
The problems such as the existing fixed body ultimate compression strength existing for the fixing low fixing formula of sand-cement slurry of putting solid waste is lower in order to solve, the temperature rise in setting and harden process is higher, the invention provides the fixing formula of a kind of solid radwaste sand-cement slurry, this formula is as follows by weight:
| 82.5 class g cements | 1000 parts |
| The artificial quartz sand of particle diameter 0.5mm～1.0mm | 250-500 part |
| The artificial quartz sand of particle diameter 1.0mm～2.0mm | 500-1000 part |
| The artificial quartz sand of particle diameter 2.0mm～3.0mm | 250-500 part |
| Polycarboxylate dehydragent | 0.2-2 part |
| West card (China) company limited produces the Retarder25 retardant of solid content 30wt% | 0.3-3 part |
| Water | 440-460 part |
Wherein, the artificial quartz sand adopting is all for being screened afterwards the quartz sand obtaining by quartzite fragmentation.
Preferably, this formula is as follows by weight:
| 82.5 class g cements | 1000 parts |
| The artificial quartz sand of particle diameter 0.5mm～1.0mm | 350-400 part |
| The artificial quartz sand of particle diameter 1.0mm～2.0mm | 700-800 part |
| The artificial quartz sand of particle diameter 2.0mm～3.0mm | 350-400 part |
| Polycarboxylate dehydragent | 0.8-1.2 part |
| West card (China) company limited produces the Retarder25 retardant of solid content 30wt% | 1-2 part |
| Water | 440-460 part |
Wherein, the artificial quartz sand adopting is all for being screened afterwards the quartz sand obtaining by quartzite fragmentation.
Adopt the technique for fixing of the fixing formula of solid radwaste sand-cement slurry of the present invention as follows: the Retarder25 retardant that (1) produces solid content 30wt% by polycarboxylate dehydragent, west card (China) company limited mixes and makes the aqueous solution with water; (2) the 82.5 class g cements quartz sand whole with three kinds of particle diameters is mixed and makes Preblend; (3) Preblend was added in the aqueous solution under agitation condition in 4-6 minute, continues to stir 10-12 minute, make sand-cement slurry; (4) with the sand-cement slurry making, build solid radwaste, complete the fixing of solid radwaste.
The main performance index of the fixing formula of solid radwaste sand-cement slurry of the present invention is as follows: fixed body 28d ultimate compression strength >=60Mpa, 28d impermeability≤2500C; Sand-cement slurry degree of mobilization >=310mm, temperature rise≤96 ℃ in setting and harden process, presetting period >=4h, therefore be applicable to various in low the fixing of solid waste of putting, be particularly useful for as in low fixing in waste packaging container of the incompressible solid refuses such as metal parts after solid waste superpressure cake, Cutting and Dismantling, waste concrete block of putting.
As can be seen here, the fixed body ultimate compression strength that adopts the fixing formula of solid radwaste sand-cement slurry of the present invention to make is high, impervious good; Its sand-cement slurry has lower setting and harden temperature rise and good Self-leveling performance; And this system component is simple, and cost is low, curing operation is easy to grasp.
Embodiment
Below in conjunction with specific embodiment, embodiments of the present invention are described further.
embodiment 1
Adopt the fixing formula of solid radwaste sand-cement slurry of the present invention and technique for fixing, at 2m
3continuous placing 1.15m in waste packaging case
3sand-cement slurry, to 0.85 m wherein
3superpressure cake is fixed.82.5 class g cements in formula are Tangshan polar bear building materials company limited product, hydromining normal domestic tap water.
Therebetween, the degree of mobilization of sampling and measuring sand-cement slurry, and make resistance to compression and impervious sample piece (put into maintaining box acceptance of the bid and support 28d, measure its resistance to compression and anti-permeability strength).
Result shows: the sand-cement slurry degree of mobilization making is 320mm left and right, and peak temperature rise is 71.7 ℃, and after the foster 28d of sample piece mark, its ultimate compression strength is 91 MPa, and chlorion migration amount is 589C, the fixed body surfacing leakless making.
embodiment 2
Adopt the fixing formula of solid radwaste sand-cement slurry of the present invention and technique for fixing, joints cement mortar at twice in 200L pail for used dressings, is fixed metal bends and metallic scrap wherein.82.5 class g cements in formula are Tangshan polar bear building materials company limited product, hydromining normal domestic tap water.
Therebetween, the degree of mobilization of sampling and measuring sand-cement slurry, and make resistance to compression and impervious sample piece (put into maintaining box acceptance of the bid and support 28d, measure its resistance to compression and anti-permeability strength).
Result shows: the sand-cement slurry degree of mobilization making is 320mm, and peak temperature rise is 78.7 ℃, and after the foster 28d of sample piece mark, its ultimate compression strength is 90 MPa, and chlorion migration amount is 600C, the fixed body surfacing leakless making.
Subsequently, the fixed body by maintenance after 28 days cuts along the position of fixing metal elbow, and on cut surface, sand is evenly distributed and without any gap, illustrates that it can be good at the refuse of parcel and fixing the inside.
Claims (2)
1. a solid radwaste sand-cement slurry is fixed formula, it is characterized in that this formula is as follows by weight:
Wherein, the artificial quartz sand adopting is all for being screened afterwards the quartz sand obtaining by quartzite fragmentation.
2. solid radwaste sand-cement slurry as claimed in claim 1 is fixing fills a prescription, and it is characterized in that this formula is as follows by weight:
。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310566957.8A CN103588433B (en) | 2013-11-15 | 2013-11-15 | The fixing formula of solid radwaste sand-cement slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310566957.8A CN103588433B (en) | 2013-11-15 | 2013-11-15 | The fixing formula of solid radwaste sand-cement slurry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103588433A true CN103588433A (en) | 2014-02-19 |
| CN103588433B CN103588433B (en) | 2015-09-30 |
Family
ID=50078798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310566957.8A Active CN103588433B (en) | 2013-11-15 | 2013-11-15 | The fixing formula of solid radwaste sand-cement slurry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103588433B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106630841A (en) * | 2016-12-26 | 2017-05-10 | 中核四0四有限公司 | Medium-low-radioactivity solid waste immobilization formula and preparation method thereof |
| CN112435769A (en) * | 2020-11-20 | 2021-03-02 | 中核核电运行管理有限公司 | Radioactive waste filter element cement fixing formula, fixing device and fixing method |
| CN112592078A (en) * | 2020-12-28 | 2021-04-02 | 山东大学 | Solid waste based sulphoaluminate cement curing substrate of medium-low radioactive nuclear waste and preparation method thereof |
| CN115798772A (en) * | 2022-12-02 | 2023-03-14 | 中国原子能科学研究院 | Decommissioning transformation method for radioactive waste liquid natural evaporation tank |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2216711A (en) * | 1988-03-03 | 1989-10-11 | Kunz Alfred & Co | Process of filling cavities |
| WO2013092866A1 (en) * | 2011-12-22 | 2013-06-27 | Areva Nc | Packaging of radioactive waste by cementing |
-
2013
- 2013-11-15 CN CN201310566957.8A patent/CN103588433B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2216711A (en) * | 1988-03-03 | 1989-10-11 | Kunz Alfred & Co | Process of filling cavities |
| WO2013092866A1 (en) * | 2011-12-22 | 2013-06-27 | Areva Nc | Packaging of radioactive waste by cementing |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106630841A (en) * | 2016-12-26 | 2017-05-10 | 中核四0四有限公司 | Medium-low-radioactivity solid waste immobilization formula and preparation method thereof |
| CN112435769A (en) * | 2020-11-20 | 2021-03-02 | 中核核电运行管理有限公司 | Radioactive waste filter element cement fixing formula, fixing device and fixing method |
| CN112592078A (en) * | 2020-12-28 | 2021-04-02 | 山东大学 | Solid waste based sulphoaluminate cement curing substrate of medium-low radioactive nuclear waste and preparation method thereof |
| CN115798772A (en) * | 2022-12-02 | 2023-03-14 | 中国原子能科学研究院 | Decommissioning transformation method for radioactive waste liquid natural evaporation tank |
| CN115798772B (en) * | 2022-12-02 | 2023-10-27 | 中国原子能科学研究院 | Retired reconstruction method of radioactive waste liquid natural evaporation pool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103588433B (en) | 2015-09-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Qadir et al. | Characterizing and modeling the mechanical properties of the cement mortar modified with fly ash for various water‐to‐cement ratios and curing times | |
| Sun et al. | Mechanical, chemical and hydrothermal activation for waste glass reinforced cement | |
| CN107840623B (en) | Baking-free brick prepared from waste slurry and preparation method thereof | |
| CN101913828B (en) | High anti-cracking large volume radiation-proof concrete and construction process thereof | |
| CN103641346B (en) | A kind of heavy metal gypsum prepares the method for geopolymer gelling material | |
| CN103588433B (en) | The fixing formula of solid radwaste sand-cement slurry | |
| Ofuyatan et al. | Evaluation of fresh and hardened properties of blended silica fume self-compacting concrete (SCC) | |
| Gu et al. | Feasibility of recycling sewage sludge ash in ultra-high performance concrete: Volume deformation, microstructure and ecological evaluation | |
| CN101085702A (en) | Application of well drilling detritus in baking-free brick material | |
| CN103951349A (en) | Inorganic waterproof material with high impervious performance | |
| Rajamane et al. | Pozzolanic industrial waste-based geopolymer concretes with low carbon footprint | |
| CN108623233B (en) | Curing agent for sulfonated drilling rock debris treatment and application thereof | |
| CN108675709B (en) | Method for preparing slope protection brick by utilizing soil after thermal desorption remediation and product thereof | |
| KR101673657B1 (en) | Development of Hume Pipe Using Inorganic Polymer Binder for High Acid Resistant | |
| CN103396078B (en) | A kind of Phosphogypsum base polymer and preparation method thereof | |
| CN109970413B (en) | Environment-friendly adhesive for garden solid waste and preparation method thereof | |
| Jeyasehar et al. | Development of fly ash based geopolymer concrete precast elements | |
| Tavares et al. | Production of concrete paving blocks (CPB) utilising electroplating residues–evaluation of mechanical and micro‐structural properties | |
| Spaeth et al. | Treatment of recycled concrete aggregates by Si-based polymers | |
| Mesci et al. | Recycling of chromite waste for concrete: Full factorial design approach | |
| CN106116332A (en) | A kind of motar utilizing garbage to produce | |
| Solís-Guzmán et al. | Recycling of wastes into construction materials | |
| Murtazayev et al. | Recycled Technogenic Raw Materials as an Effective Filler for Modern Construction Composites | |
| Abdalla et al. | Effect on Sulfuric Acid Resistance and Shrinkage of Concrete Incorporating Processed Bagasse Ash and Silica Fume | |
| Nim et al. | Impact of eco friendly blast furnace slag on production of building blocks |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |