CN103570316A - Filled expanding material - Google Patents
Filled expanding material Download PDFInfo
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- CN103570316A CN103570316A CN201310544630.0A CN201310544630A CN103570316A CN 103570316 A CN103570316 A CN 103570316A CN 201310544630 A CN201310544630 A CN 201310544630A CN 103570316 A CN103570316 A CN 103570316A
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- expansion material
- filling
- filling expansion
- whipping agent
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Abstract
The invention discloses a filled expanding material, comprising the following raw materials by mass percent: 10-60% of pozzolanic industrial waste with latent hydraulicity, not more than 40% of basic material, not more than 20% of gypsum, not more than 20% of portland cement, 30-60% of water and not more than 4% of admixture. The filled expanding material has good liquidity, expansibility and tensile strength; filling of a mine roadway and roof-contacted expansion are met; the filling expansion rate achieves about 5-15%; the tensile strength within 28 days achieves 2.0-8.0MPa; the initial setting time is about 60-100 minutes; the final setting time is 6-8 hours; the initial fluidity can be up to over 260mm; the fluidity within 60 minutes is not smaller than 200-250mm.
Description
Technical field
The invention belongs to mine engineering technical field, disclose a kind of pozzolanic materials, basic material, gypsum and silicate cement etc. based on thering is latent hydraulicity for main raw and added whipping agent, foamed time control agent, control rate of expansion and expansion time, can admixture hardening accelerator, the tunnel filling expanding material of the admixture such as water reducer.Filling expansion material of the present invention has good fluidity, swelling property is adjustable, Strength of backfill is high, can expand to realize by material itself connects the advantages such as top.
Background technology
For a long time, coal is one of main energy sources of using of the mankind always.The rich coal resources of China, storage capacity is to be also in the prostatitis in the world, " three times " press coal commonplace.Adopt filling mining effectively to reduce subsidence, preserve the ecological environment, realize the effective way of green exploitation.But at present because compaction material filling cost is high, strength of filling mass is low, connect the reasons such as top weak effect, cause China to adopt colliery ratio and the coal mining rate of filling mining extremely low.Coal mining causes subsidence, building destruction and underground water and land resources minimizing etc., makes mining area ecological environment problem more and more outstanding.
Filling mining is exactly on ground or down-hole water, flyash and gelling material and admixture coordinate the aggregates such as spoil, sandstone to make compaction material by goaf filling, and can realize expanding and connect top, realize good filling effect, reach the object of controlling subsidence.Filling mining technology is to address the above problem especially the Main Means that " three times " press coal.Stowing method mining is improved coal recovery rate, makes full use of resource, effectively controls ground and presses, and reduces or eliminates ground settlement and can be in advantages such as " three times " exploitations.Therefore, develop the expansion filling material that a kind of low cost, large fluidity, appropriateness expand, have some strength and starting material wide material sources and there is wide popularizing application prospect.
During filling, can connect real top board be the important factor that affects support effect to compaction material.Filling expansion material is reacted and is produced a large amount of tiny bubbles by materials inside, according to foaming agent consumption, make cubical expansivity adjustable controlled within the specific limits, therefore can realize obturator initiatively connects top, reach the matched well with roof strata, changed the tradition that obturator all the time belongs to passive protecting structure, that from source, has improved obturator initiatively connects top effect, has played superincumbent stratum is supported well.
Through contrast patent of invention CN1424275A, CN200810233536.2 and patent CN99106222.1, it is mainly fill paste material, and expand, does not connect top effect.Patent CN201010615171.7 be take mine tailing as main raw material, patent CN201010615079.0 be take red mud as main raw material, patent CN201010615083.7 be take drift-sand as main raw material, mine tailing, red mud and drift-sand all do not have latent hydraulicity, patent CN201010300671.1 is high-water material, its solid-to-liquid ratio is at 1:1.2-1.5, and the application to take the volcano grey matter trade waste with latent hydraulicity be main raw material, solid-to-liquid ratio is at 2.3-1.2.
Summary of the invention
The invention provides a kind of filling in mine expanding material, this filling expansion material, has good mobility, swelling property and ultimate compression strength, meets mine working filling and expansion and connects top.
A kind of filling expansion material, its starting material comprise volcano grey matter trade waste, basic material, gypsum, silicate cement, the water with latent hydraulicity and the admixture that contains whipping agent, this filling expansion material, mix appropriate whipping agent, foamed time control agent, control and expand and the expansion time, can mix appropriate admixture simultaneously.
Each several part ratio is:
The mass percent 10-60% of the volcano grey matter trade waste of latent hydraulicity;
The mass percent of basic material is not more than 40%;
The mass percent of gypsum is not more than 20%;
Silicate cement mass percent is not more than 20%;
Quality per-cent accounts for 30-60%;
The mass percent that contains the admixture of whipping agent is not more than 4%;
The described volcano grey matter trade waste with latent hydraulicity refers to that flyash, slag, slag, slag etc. are rich in the material of active silica and active oxidation aluminium component, uses one or two or more kinds mixing wherein.
Described basic material refers to that carbide slag, lime, white alkali-making mud, water glass etc. are rich in the material of the compositions such as calcium hydroxide, sodium hydroxide, water glass, calcium chloride, uses one or two or more kinds mixing wherein.
Described gypsum refers to the plaster of paris or desulfurated plaster, uses separately or the two mixing use.
The described admixture that comprises whipping agent, except whipping agent, also comprises one or two or more kinds in water reducer, exciting agent, hardening accelerator.
Described silicate cement refers to the silicate cement of 32.5,42.5 or 52.5 grades.
Filling expansion volume dilatation of the present invention reaches 5-15% left and right, and within 28 days, ultimate compression strength reaches 2.0MPa-8.0MPa; About 60-100 minute of presetting period, final setting time is at 6-8 hour; More than initial flow degree reaches 260mm, within 60 minutes, degree of mobilization is not less than 200mm.
Accompanying drawing explanation
Fig. 1 filling expansion material of the present invention expansion plans after 2 hours.
The expansion in percent of Fig. 2 different addition quantity foam material filling expansion material.
Embodiment
The invention discloses and utilize the trade waste with latent hydraulicity, its composition is rich in active silica and aluminum oxide, under alkali shooting conditions, generate the hydrated products such as hydrated calcium silicate and drated calcium aluminate, under the condition simultaneously existing at gypsum, generate calcium trisulphoaluminate hydrate (ettringite AFt).The reaction formula occurring reacts as follows:
Ca(OH)
2+SiO
2+H
2O=C-S-H
Ca(OH)
2+Al
2O
3+H
2O=C
3AH
6
Ca (OH)
2+ Al
2o
3+ CaSO
4+ H
2o=AFt(ettringite)
Disclose the admixture or the aluminium powder foaming generation hydrogen that utilize hydrogen peroxide foam material to produce oxygen and control foamed time simultaneously, under the condition of suitable volume, made it in applicable time foaming, foam overrun reaches 5-15% left and right.Within 28 days, ultimate compression strength reaches 2.0MPa-8.0MPa; About 60-100 minute of presetting period, final setting time is at 6-8 hour; More than initial flow degree reaches 260mm, within 60 minutes, degree of mobilization is not less than 200mm.
The primary product of filling expansion material after aquation maintenance consists of hydrated calcium silicate and drated calcium aluminate and ettringite.
The present invention is under suitable quantity of water and appropriate whipping agent condition, after stirring, reaches suitable degree of mobilization, slump and viscosity, produces foaming and intumescing after filling in good time.After expanding, cubical expansivity reaches 10% left and right, and fixed generation intensity.
As certain cement production enterprise is produced filling expansion material mixture ratio:
| Composition % | CaO | SiO 2 | Fe 2O 3 | Al 2O 3 | MgO | SO 3 | MnO 2 | Ratio |
| Silicate cement | 64.81 | 21.58 | 3.20 | 4.90 | 3.70 | 0.52 | ? | 5 |
| Flyash | 3.87 | 49.21 | 7.25 | 24.89 | 2.71 | 1.03 | ? | 30 |
| Gypsum | 38.41 | 0.37 | 0.03 | 0.03 | ? | 56.67 | ? | 9 |
| Unslaked lime | 96.32 | \ | \ | \ | \ | \ | \ | 9 |
| Foam material | \ | \ | \ | \ | \ | \ | \ | 2 |
| Water | ? | ? | ? | ? | ? | ? | ? | 45 |
Upper table filling expansion material is through normal curing, and filling expansion volume dilatation reaches 10%, 7 day ultimate compression strength and reaches 2.8MPa, and within 28 days, ultimate compression strength reaches 4.2MPa, and within 56 days, ultimate compression strength reaches 6.7MPa.Presetting period is 93 minutes, and final setting time is in the time of 395 minutes; Initial flow degree is not less than 286mm.
Main points of the present invention are to have invented to utilize alkali provocative reaction principle, and the trade wastes such as flyash, slag, slag and carbide slag of take have been prepared good fluidity, rate of expansion is high, intensity meets filling demand a kind of filling in mine expanding material as main raw material.
Advantage of the present invention is that profit is useless, environmental protection, filling effect is good, cost is low.
Claims (10)
1. a filling expansion material, is characterized in that, this filling expansion material comprises volcano grey matter trade waste, basic material, gypsum, silicate cement, the water with latent hydraulicity and the admixture that contains whipping agent; Each several part ratio is:
The mass percent 10-60% of the volcano grey matter trade waste of latent hydraulicity;
The mass percent of basic material is not more than 40%;
The mass percent of gypsum is not more than 20%;
The mass percent of silicate cement is not more than 20%;
The mass percent of water accounts for 30-60%;
The mass percent that contains the admixture of whipping agent is not more than 4%.
2. a kind of filling expansion material according to claim 1, is characterized in that, the described volcano grey matter trade waste with latent hydraulicity refers to one or two or more kinds mixing in flyash, slag, slag, slag.
3. a kind of filling expansion material according to claim 1 and 2, is characterized in that, described basic material refers to one or two or more kinds mixing in carbide slag, lime, white alkali-making mud, water glass.
4. a kind of filling expansion material according to claim 1 and 2, is characterized in that, described gypsum is a kind of or two kinds of mixing in the plaster of paris, desulfurated plaster.
5. a kind of filling expansion material according to claim 3, is characterized in that, described gypsum is a kind of or two kinds of mixing in the plaster of paris, desulfurated plaster.
6. according to a kind of filling expansion material described in claim 1 or 2. or 5, it is characterized in that, the described admixture that comprises whipping agent, except whipping agent, also comprises one or two or more kinds in water reducer, exciting agent, hardening accelerator.
7. a kind of filling expansion material according to claim 3, is characterized in that, the described admixture that comprises whipping agent, except whipping agent, also comprises one or two or more kinds in water reducer, exciting agent, hardening accelerator.
8. a kind of filling expansion material according to claim 4, is characterized in that, the described admixture that comprises whipping agent, except whipping agent, also comprises one or two or more kinds in water reducer, exciting agent, hardening accelerator.
9. according to a kind of filling expansion material described in claim 1 or 2 or 5 or 7 or 8, it is characterized in that, described silicate cement refers to the silicate cement of 32.5,42.5 or 52.5 grades.
10. a kind of filling expansion material according to claim 6, is characterized in that, described silicate cement refers to the silicate cement of 32.5,42.5 or 52.5 grades.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310544630.0A CN103570316A (en) | 2013-11-06 | 2013-11-06 | Filled expanding material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310544630.0A CN103570316A (en) | 2013-11-06 | 2013-11-06 | Filled expanding material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103570316A true CN103570316A (en) | 2014-02-12 |
Family
ID=50043116
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|---|---|---|---|
| CN201310544630.0A Pending CN103570316A (en) | 2013-11-06 | 2013-11-06 | Filled expanding material |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104045292A (en) * | 2014-06-16 | 2014-09-17 | 江苏固维特材料科技有限公司 | Curing agent for filling iron tailings and preparation method thereof |
| CN104387008A (en) * | 2014-11-11 | 2015-03-04 | 黄美忠 | Finishing mortar compounded from fluorogypsum and white clay |
| CN108455941A (en) * | 2018-01-16 | 2018-08-28 | 河南理工大学 | A kind of mining foam filling material of alkaline residue and preparation method thereof |
| CN109776057A (en) * | 2019-03-15 | 2019-05-21 | 北京新时代寰宇科技发展有限公司 | A kind of foamed heat insulating plate material and preparation method thereof for upright mould process production |
| CN110015873A (en) * | 2019-05-27 | 2019-07-16 | 王彦超 | A kind of environment protection, low cost packing material suitable for constructing tunnel goaf |
| CN110256033A (en) * | 2019-03-22 | 2019-09-20 | 山东科技大学 | High porosity foam body and preparation method thereof for goaf coal spontaneous combustion prevention and treatment |
| CN110304877A (en) * | 2019-06-24 | 2019-10-08 | 华泰恒生科技发展（北京）有限公司 | A kind of light-weight foamed soil material and preparation method thereof applied to large-scale infilling work |
| CN110776279A (en) * | 2019-11-22 | 2020-02-11 | 山西省交通科技研发有限公司 | Base polymer of fly ash, furnace bottom slag and water-rich carbide slag and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101407395A (en) * | 2008-11-06 | 2009-04-15 | 昆明理工大学 | Fly ash-based grouting filler for mine |
| CN103011742A (en) * | 2012-12-05 | 2013-04-03 | 山东科技大学 | Actively-pressing high-swelling pasty filling material |
-
2013
- 2013-11-06 CN CN201310544630.0A patent/CN103570316A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101407395A (en) * | 2008-11-06 | 2009-04-15 | 昆明理工大学 | Fly ash-based grouting filler for mine |
| CN103011742A (en) * | 2012-12-05 | 2013-04-03 | 山东科技大学 | Actively-pressing high-swelling pasty filling material |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104045292A (en) * | 2014-06-16 | 2014-09-17 | 江苏固维特材料科技有限公司 | Curing agent for filling iron tailings and preparation method thereof |
| CN104387008A (en) * | 2014-11-11 | 2015-03-04 | 黄美忠 | Finishing mortar compounded from fluorogypsum and white clay |
| CN108455941A (en) * | 2018-01-16 | 2018-08-28 | 河南理工大学 | A kind of mining foam filling material of alkaline residue and preparation method thereof |
| CN109776057A (en) * | 2019-03-15 | 2019-05-21 | 北京新时代寰宇科技发展有限公司 | A kind of foamed heat insulating plate material and preparation method thereof for upright mould process production |
| CN110256033A (en) * | 2019-03-22 | 2019-09-20 | 山东科技大学 | High porosity foam body and preparation method thereof for goaf coal spontaneous combustion prevention and treatment |
| CN110256033B (en) * | 2019-03-22 | 2021-07-30 | 山东科技大学 | High-porosity foam for spontaneous combustion control of coal in goaf and preparation method thereof |
| CN110015873A (en) * | 2019-05-27 | 2019-07-16 | 王彦超 | A kind of environment protection, low cost packing material suitable for constructing tunnel goaf |
| CN110304877A (en) * | 2019-06-24 | 2019-10-08 | 华泰恒生科技发展（北京）有限公司 | A kind of light-weight foamed soil material and preparation method thereof applied to large-scale infilling work |
| CN110776279A (en) * | 2019-11-22 | 2020-02-11 | 山西省交通科技研发有限公司 | Base polymer of fly ash, furnace bottom slag and water-rich carbide slag and preparation method thereof |
| CN110776279B (en) * | 2019-11-22 | 2021-10-15 | 山西省交通科技研发有限公司 | Base polymer of fly ash, furnace bottom slag and water-rich carbide slag and preparation method thereof |
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Application publication date: 20140212 |