JPS55101622A - Dehydration of concrete utilizing temporary canvas mold fixed by negative pressure - Google Patents
Dehydration of concrete utilizing temporary canvas mold fixed by negative pressureInfo
- Publication number
- JPS55101622A JPS55101622A JP899779A JP899779A JPS55101622A JP S55101622 A JPS55101622 A JP S55101622A JP 899779 A JP899779 A JP 899779A JP 899779 A JP899779 A JP 899779A JP S55101622 A JPS55101622 A JP S55101622A
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- mold
- water
- negative pressure
- canvas
- 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
- Retaining Walls (AREA)
- Lining And Supports For Tunnels (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
PURPOSE: To enhance compression strength of concrete by a method wherein a negative pressure for pressing and fixing a temporary canvas mold against a pit excavation surface is utilized also for removing excessive water contained in the placed concrete.
CONSTITUTION: Of a temporary double-sheet canvas mold 2, 3, the gas/water-permeable mold element 2 is situated on the side of an excavation surface 1 with a water-permeable layer 4 therebetween, and the gas/water-impermeable mold element 3 is situated on the side of the atmosphere 5. Air and water in the layer 4 are removed by a vacuum pump 8, and the mold 2, 3 is pressed and fixed against the surface 1 of a tunnel. Then, with concrete 10 forced into the space between the mold elements 2 and 3 by a concrete pump 9, moisture in the concrete 10 is removed by the pump 8 through the layer 4, providing high-strength concrete of reduced contraction upon hardening.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP899779A JPS55101622A (en) | 1979-01-29 | 1979-01-29 | Dehydration of concrete utilizing temporary canvas mold fixed by negative pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP899779A JPS55101622A (en) | 1979-01-29 | 1979-01-29 | Dehydration of concrete utilizing temporary canvas mold fixed by negative pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55101622A true JPS55101622A (en) | 1980-08-02 |
Family
ID=11708319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP899779A Pending JPS55101622A (en) | 1979-01-29 | 1979-01-29 | Dehydration of concrete utilizing temporary canvas mold fixed by negative pressure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55101622A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58500916A (en) * | 1981-07-20 | 1983-06-02 | ア−ルシ−エ− コ−ポレ−ション | Diffraction attenuation color filter and its usage and certified products |
| JPH0218598U (en) * | 1988-07-23 | 1990-02-07 | ||
| JP2005223108A (en) * | 2004-02-05 | 2005-08-18 | Tdk Corp | Super-magnetostrictive actuator |
| CN106801611A (en) * | 2015-11-26 | 2017-06-06 | 山东科技大学 | A kind of deep tunnel supporting new concrete support |
-
1979
- 1979-01-29 JP JP899779A patent/JPS55101622A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58500916A (en) * | 1981-07-20 | 1983-06-02 | ア−ルシ−エ− コ−ポレ−ション | Diffraction attenuation color filter and its usage and certified products |
| JPH0218598U (en) * | 1988-07-23 | 1990-02-07 | ||
| JP2005223108A (en) * | 2004-02-05 | 2005-08-18 | Tdk Corp | Super-magnetostrictive actuator |
| CN106801611A (en) * | 2015-11-26 | 2017-06-06 | 山东科技大学 | A kind of deep tunnel supporting new concrete support |
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