GB2079740A - Pulverized brick material, and the use thereof in a method for explosion blasting - Google Patents
Pulverized brick material, and the use thereof in a method for explosion blasting Download PDFInfo
- Publication number
- GB2079740A GB2079740A GB8119198A GB8119198A GB2079740A GB 2079740 A GB2079740 A GB 2079740A GB 8119198 A GB8119198 A GB 8119198A GB 8119198 A GB8119198 A GB 8119198A GB 2079740 A GB2079740 A GB 2079740A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulverized
- brick
- weight
- blasting
- brick material
- 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.)
- Withdrawn
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/08—Wrecking of buildings
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
Description
Pulverized brick material, and the use thereof in a method for explosion blasting The present invention relates to a pulverized brick or tile material, and to the use of such a material in a method for explosion blasting.
Explosives known at the present day act by virtue of the very high pressures which are generated upon deterioration. A disadvantage of the known explosives is that these pressures are achieved in a very short time, and therefore the explosion is accompanied by unpleasant secondary phenomena, more particularly by locally high air pressure variations and a loud detonation.
The present invention has its object to provide a material which has in itself, when appropriately used, the possibility of producing an explosive effect on a slowertime-scale than conventional explosives, by undergoing an expansion which remains even when there is a return to normal conditions, in contrast for example to the expansion characteristics of materials which exhibit a reversible expansion directly dependent upon expansion coefficient and temperature.
In accordance with this invention therefore we provide a pulverized brick or tile material, characterised by an elemental composition, in % by weight, which is within the ranges:
Such a pulverized brick or tile material can be used as an explosive which does not cause the unpleasant side effects of sudden pressure increases and loud detonations. According to this invention explosive blasting may be achieved by mixing the pulverized material with from 20 to 50 % by weight of water and introducing the mixture into at least one opening in the object or material in which the explosion is to occur. When this is done, a slow exploding and destroying action occurs, typically within 30 min. to about 70 h. depending on ambient temperature or filling temperature.
Expansion pressures of over 3000 t/m may be produced by the explosive blasting method of this invention.
Tests have shown that it is advantageous to select the following two elemental compositions of brick material:
Another possibility is to have the following composition of brick material:
A brick material of the following composition has also been found to give good results:
Awater addition of between 25 and 40% by weight can be particularly advantageous and produce appropriate expansion pressures.
"Explosive blasting" in the present context is to be understood as also including detaching, splitting, tearing or rupturing, deforming, separating by pressure, destroying, loosening and the like. The present invention is particularly useful for the explosion blasting of rock masses.
Brick or tile material having compositions within the ranges required by this invention are known. For example such bricks may be prepared in accordance with United States Patent No. 3785844, incorporated herein by reference. The brick or tile material of the desired composition may be pulverized by any suitable method eg it may be crushed in a mill. Optimum results are achieved when the particle sizes of the pulverized brick material are similar to those of cement powder.
Claims (7)
1. Pulverized brick ortile material, characterised by an elemental composition, in % by weight, which is within the ranges:
2. Brick material according to Claim 1, wherein the elemental composition, in % by weight, is approximately:
3. Brick material according to Claim 1, wherein the elemental composition, in % by weight, is approximately:
4. An explosive blasting method characterised in that a pulverized material according to any one of Claims 1-3 is mixed with 20-50% by weight of H2O and the mixture is introduced into an opening in the object or material which is to be subjected to the blasting.
5. A method according to Claim 4, wherein the pulverized material is mixed with 25-40% by weight of H20.
6. A pulverized brick or tile material substantially as hereinbefore described.
7. An explosive blasting method substantially as hereinbefore described.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH474280 | 1980-06-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2079740A true GB2079740A (en) | 1982-01-27 |
Family
ID=4281722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8119198A Withdrawn GB2079740A (en) | 1980-06-20 | 1981-06-22 | Pulverized brick material, and the use thereof in a method for explosion blasting |
Country Status (15)
| Country | Link |
|---|---|
| EP (1) | EP0042543A1 (en) |
| BE (1) | BE889305A (en) |
| DE (1) | DE3036983A1 (en) |
| DK (1) | DK266881A (en) |
| FI (1) | FI802587A (en) |
| FR (1) | FR2484996A1 (en) |
| GB (1) | GB2079740A (en) |
| GR (1) | GR69625B (en) |
| IT (1) | IT1137184B (en) |
| LU (1) | LU83443A1 (en) |
| NL (1) | NL8102465A (en) |
| NO (1) | NO810468L (en) |
| PT (1) | PT72556B (en) |
| SE (1) | SE8100533L (en) |
| ZA (1) | ZA814109B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104499729A (en) * | 2014-11-28 | 2015-04-08 | 芜湖银星汽车零部件有限公司 | Disassembling table |
| CN108166777A (en) * | 2017-12-17 | 2018-06-15 | 哈尔滨理工大学 | Green method for dismounting based on electrothermal way crushing technology |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011073447A1 (en) | 2009-12-18 | 2011-06-23 | Straumann Holding Ag | Emd c-depleted |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2154355A (en) * | 1936-01-25 | 1939-04-11 | Rawlplug Co Ltd | Wall and like plug |
| GB1235989A (en) * | 1968-09-26 | 1971-06-16 | Giken Kogyo Kk | Method of demolishing a concrete construction |
| US3801345A (en) * | 1971-03-30 | 1974-04-02 | Denki Kagaku Kogyo Kk | Process for producing cement expanding agents |
| US4002483A (en) * | 1975-06-12 | 1977-01-11 | General Portland, Inc. | Expansive cement |
| JPS601904B2 (en) * | 1979-03-20 | 1985-01-18 | 太平洋セメント株式会社 | Destruction agent for brittle objects |
| JPS5681779A (en) * | 1979-12-01 | 1981-07-04 | Sumitomo Cement Co | Breaking material |
-
1980
- 1980-07-23 GR GR62522A patent/GR69625B/el unknown
- 1980-08-18 FI FI802587A patent/FI802587A/en not_active Application Discontinuation
- 1980-10-01 DE DE19803036983 patent/DE3036983A1/en not_active Withdrawn
-
1981
- 1981-01-28 SE SE8100533A patent/SE8100533L/en not_active Application Discontinuation
- 1981-02-11 NO NO810468A patent/NO810468L/en unknown
- 1981-02-23 PT PT72556A patent/PT72556B/en unknown
- 1981-04-30 FR FR8108702A patent/FR2484996A1/en active Pending
- 1981-05-20 NL NL8102465A patent/NL8102465A/en not_active Application Discontinuation
- 1981-06-11 EP EP81104477A patent/EP0042543A1/en not_active Withdrawn
- 1981-06-18 ZA ZA814109A patent/ZA814109B/en unknown
- 1981-06-18 DK DK266881A patent/DK266881A/en not_active Application Discontinuation
- 1981-06-19 LU LU83443A patent/LU83443A1/en unknown
- 1981-06-19 BE BE0/205153A patent/BE889305A/en unknown
- 1981-06-19 IT IT22444/81A patent/IT1137184B/en active
- 1981-06-22 GB GB8119198A patent/GB2079740A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104499729A (en) * | 2014-11-28 | 2015-04-08 | 芜湖银星汽车零部件有限公司 | Disassembling table |
| CN104499729B (en) * | 2014-11-28 | 2016-12-07 | 芜湖银星汽车零部件有限公司 | A kind of disassembly table |
| CN108166777A (en) * | 2017-12-17 | 2018-06-15 | 哈尔滨理工大学 | Green method for dismounting based on electrothermal way crushing technology |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2484996A1 (en) | 1981-12-24 |
| DE3036983A1 (en) | 1982-01-14 |
| IT1137184B (en) | 1986-09-03 |
| FI802587A (en) | 1981-12-21 |
| BE889305A (en) | 1981-10-16 |
| NL8102465A (en) | 1982-01-18 |
| ZA814109B (en) | 1982-07-28 |
| LU83443A1 (en) | 1981-10-29 |
| GR69625B (en) | 1982-07-06 |
| PT72556A (en) | 1981-03-01 |
| PT72556B (en) | 1982-02-11 |
| SE8100533L (en) | 1981-12-21 |
| IT8122444A0 (en) | 1981-06-19 |
| DK266881A (en) | 1981-12-21 |
| EP0042543A1 (en) | 1981-12-30 |
| NO810468L (en) | 1981-12-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |