CN1222619A - High-temperature pyrolysis method for dismantling concrete building - Google Patents
High-temperature pyrolysis method for dismantling concrete building Download PDFInfo
- Publication number
- CN1222619A CN1222619A CN 98104914 CN98104914A CN1222619A CN 1222619 A CN1222619 A CN 1222619A CN 98104914 CN98104914 CN 98104914 CN 98104914 A CN98104914 A CN 98104914A CN 1222619 A CN1222619 A CN 1222619A
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- China
- Prior art keywords
- building
- concrete
- demolishing
- concrete building
- vent
- 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
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000000197 pyrolysis Methods 0.000 title 1
- 238000002485 combustion reaction Methods 0.000 claims abstract description 6
- 239000003245 coal Substances 0.000 claims abstract description 5
- 239000000779 smoke Substances 0.000 claims abstract description 5
- 230000005484 gravity Effects 0.000 claims description 5
- 230000000593 degrading effect Effects 0.000 claims description 3
- 239000011454 mudbrick Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- -1 firewood Substances 0.000 abstract description 2
- 238000009423 ventilation Methods 0.000 abstract 2
- 241000894006 Bacteria Species 0.000 abstract 1
- 238000005422 blasting Methods 0.000 description 4
- 239000002360 explosive Substances 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 241000256844 Apis mellifera Species 0.000 description 1
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention relates to a method for demolishing a concrete building. Combustible materials such as firewood, coal and the like are stacked in a building to be dismantled, smoke exhaust holes are reserved on a roof, doors and windows of the building and each exhaust hole are sealed by adobes and plastered (ventilation holes are reserved), the combustible materials in the building are ignited, an air blower supplies air inwards through the ventilation holes to promote combustion, and the temperature is raised to about 400 ℃ for more than 4 hours until a concrete beam plate is collapsed. The method can completely recover steel when demolishing the building, can completely kill bacteria in the old building, and saves time and labor when demolishing the concrete building.
Description
The present invention relates to a kind of method of dismantling concrete building.
Available coagulation soil demolishing buildings, what generally adopt is the demolition blasting method.Before explosion, building is drilled to the aperture of a plurality of filling explosives, this hole is before boring, need to locate by the expert, all need Schmidt hammer to measure concrete intensity level around the hole, the expert decides the explosive loading in each hole according to the reinforcing bar dosage of intensity level and building, and it is loaded down with trivial details, careful to work, can not be careless.Because building practice of construction and design drawing have certain difference, tend to influence the calculating of expert to explosive charge,, will occur concrete is blown up or some fried two kinds of extreme situation that do not get off in blast position in case make a fault.Concrete under blasting demolishing method is fried is block, and very high strength is still arranged.The reinforcing bar that links need manually cut mutually, and clearing out a gathering place needs with a large amount of artificial, and reinforcing bar is difficult to reclaim.The concrete beam plate of not scraping is hurted sb.'s feelings in clearing out a gathering place easily, and the explosives and detonators that does not particularly have to ignite is run into dangerous especially by the workman.
The objective of the invention is some weak point, provide a kind of employing combustion system to reach the dismounting purpose by the concrete method of high temperature degrading at existing demolition blasting concrete structure.
Technical scheme of the present invention is such.In wanting split building, stack combustibles such as firewood and coal, leave smoke vent on the roof, then with the door and window of building, each steam vent with sun-dried mud brick sealing, claying (leaving gravity vent), combustibles in the building are lighted, ventilator is blown inwards by gravity vent and is urged combustion, heat and to 400 degree, continue more than 4 hours, till concrete beam plate is burnt down.When concrete beam plate burnt down, exterior wall will collapse automatically inward on every side.
The inventive method has following advantage:
1. pass through the concrete structure that high temperature burnt, concrete strength descends greatly, and the dismantling concrete building is time saving and energy saving.
2. the steel in the building are compared with other method for dismounting, and damaged condition is low, can all reclaim, and reduce cost.
3. because of old room germ is many, high-temperature combustion method is removed old building killing pathogenic bacteria fully, and health and epidemic prevention is effective.
Embodiments of the invention are as follows:
Being removed combustibles such as stacking firewood and coal in the building, be drilled with smoke vent on the roof, per 300 square meters stay a smoke vent.Then with the door and window of building, each steam vent with sun-dried mud brick sealing, claying (leaving gravity vent).Combustibles in the building are lighted, and ventilator is blown inwards by gravity vent and is urged combustion, and heating continues more than 4 hours, till concrete beam plate is burnt down to 400 degree.Interior wall is subjected to high temperature during burning, and its intensity descends rapidly, and the short time heats up rapidly behind the firewood combustion, and heat reaches high honeybee in the building, and the burning of coal longer duration burns to a certain degree, and wall can fall in.Use this method dismantling concrete building, recovery steel that can 100% are removed 2000M
2100 tons of recyclable steel of building.The concrete major part of burning through high temperature becomes rubble, powder, has quite a few to become quicklime, and these rubbles, ashes are again the good materials of construction.The present invention compares with the demolition blasting method, can save a large amount of human and material resources, reduces the outward transport expense of building waste simultaneously.
Claims (1)
1. the high temperature degrading process of a dismantling concrete building, it is characterized in that: in wanting split building, stack combustibles such as firewood and coal, leave smoke vent on the roof, then with the door and window of building, each steam vent with sun-dried mud brick sealing, claying, combustibles in the building are lighted, ventilator is blown inwards by gravity vent and is urged combustion, heats to continue more than 4 hours, till concrete beam plate is burnt down to 400 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98104914 CN1222619A (en) | 1998-01-08 | 1998-01-08 | High-temperature pyrolysis method for dismantling concrete building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98104914 CN1222619A (en) | 1998-01-08 | 1998-01-08 | High-temperature pyrolysis method for dismantling concrete building |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1222619A true CN1222619A (en) | 1999-07-14 |
Family
ID=5218558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98104914 Pending CN1222619A (en) | 1998-01-08 | 1998-01-08 | High-temperature pyrolysis method for dismantling concrete building |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1222619A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644385A (en) * | 2012-04-10 | 2012-08-22 | 中南大学 | Device for blasting reinforced concrete structure by electromagnetic induction heating |
| CN104153597A (en) * | 2014-07-18 | 2014-11-19 | 张振堂 | Low-rise building demolishing method |
| CN106907020A (en) * | 2017-04-14 | 2017-06-30 | 金陵科技学院 | A kind of recycling machinery for building |
| CN111173312A (en) * | 2019-12-31 | 2020-05-19 | 哈尔滨理工大学 | Method for heating-cooling demolition of high-rise brick structure |
-
1998
- 1998-01-08 CN CN 98104914 patent/CN1222619A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644385A (en) * | 2012-04-10 | 2012-08-22 | 中南大学 | Device for blasting reinforced concrete structure by electromagnetic induction heating |
| CN104153597A (en) * | 2014-07-18 | 2014-11-19 | 张振堂 | Low-rise building demolishing method |
| CN104153597B (en) * | 2014-07-18 | 2016-08-24 | 张振堂 | A kind of low floor building demolition method |
| CN106907020A (en) * | 2017-04-14 | 2017-06-30 | 金陵科技学院 | A kind of recycling machinery for building |
| CN111173312A (en) * | 2019-12-31 | 2020-05-19 | 哈尔滨理工大学 | Method for heating-cooling demolition of high-rise brick structure |
| CN111173312B (en) * | 2019-12-31 | 2020-10-23 | 哈尔滨理工大学 | Method for heating-cooling demolition of high-rise brick structure |
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Legal Events
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|---|---|---|---|
| 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 |