JPS6485710A - Manufacture of concrete - Google Patents
Manufacture of concreteInfo
- Publication number
- JPS6485710A JPS6485710A JP24250687A JP24250687A JPS6485710A JP S6485710 A JPS6485710 A JP S6485710A JP 24250687 A JP24250687 A JP 24250687A JP 24250687 A JP24250687 A JP 24250687A JP S6485710 A JPS6485710 A JP S6485710A
- Authority
- JP
- Japan
- Prior art keywords
- water
- concrete
- unused gas
- reservoir
- kneading water
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/0007—Pretreatment of the ingredients, e.g. by heating, sorting, grading, drying, disintegrating; Preventing generation of dust
- B28C7/0023—Pretreatment of the ingredients, e.g. by heating, sorting, grading, drying, disintegrating; Preventing generation of dust by heating or cooling
- B28C7/0038—Cooling, e.g. using ice
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
PURPOSE:To reduce a quantity of liquid nitrogen consumption and obtain good quality concrete, by a method wherein unused gas of the liquid nitrogen generated during a manufacturing process of concrete is recovered, kneading water is cooled by bringing the unused gas into contact with the kneading water and the cooled kneading water is fed to a mixer along with the cement and aggregate. CONSTITUTION:Unused gas of liquid nitrogen to be blown into water during manufacturing of concrete exhibits a sufficiently low temperature such as -90 deg.C, the unused gas is recovered through a pipe 4 and discharged into kneading water in a reservoir 6. The discharge is performed extending over almost the whole sphere of the reservoir 6 through a filtering device 5. With this construction, a temperature of the water in the reservoir 6 is drastically lowered and the water is fed into a mixer 3 in a closed chamber 1 along with cement and aggregate, which greatly contributes to cooling of the concrete. Since the unused gas causes dissolved oxygen to disperse in the open air by precipitating the same efficiently, the water is sent out to the mixer 3 by a pump 8 as a low oxygen kneading water. Therefore, oxygen content in the subject concrete is reduced and corrosion resistant effect to a reinforcing rod of a structure to be built becomes excellent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24250687A JPS6485710A (en) | 1987-09-29 | 1987-09-29 | Manufacture of concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24250687A JPS6485710A (en) | 1987-09-29 | 1987-09-29 | Manufacture of concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6485710A true JPS6485710A (en) | 1989-03-30 |
Family
ID=17090115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24250687A Pending JPS6485710A (en) | 1987-09-29 | 1987-09-29 | Manufacture of concrete |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6485710A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006018445A1 (en) * | 2004-08-20 | 2006-02-23 | Air Liquide Deutschland Gmbh | Method of producing cooled unset concrete |
| WO2018189915A1 (en) * | 2017-04-11 | 2018-10-18 | 株式会社昭和冷凍プラント | Concrete manufacturing method using nitrogen dissolved water and method for manufacturing reinforced concrete structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6426406A (en) * | 1987-07-23 | 1989-01-27 | Takenaka Komuten Co | Manufacture of cooled concrete due to injection of low-temperature liquefied gas |
-
1987
- 1987-09-29 JP JP24250687A patent/JPS6485710A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6426406A (en) * | 1987-07-23 | 1989-01-27 | Takenaka Komuten Co | Manufacture of cooled concrete due to injection of low-temperature liquefied gas |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006018445A1 (en) * | 2004-08-20 | 2006-02-23 | Air Liquide Deutschland Gmbh | Method of producing cooled unset concrete |
| WO2018189915A1 (en) * | 2017-04-11 | 2018-10-18 | 株式会社昭和冷凍プラント | Concrete manufacturing method using nitrogen dissolved water and method for manufacturing reinforced concrete structure |
| JP2018176526A (en) * | 2017-04-11 | 2018-11-15 | 株式会社昭和冷凍プラント | Method for manufacturing concrete using nitrogen dissolved water and method for manufacturing reinforced concrete structure |
| US10968141B2 (en) | 2017-04-11 | 2021-04-06 | Showa Freezing Plant Co., Ltd. | Concrete manufacturing method using nitrogen dissolved water and method for manufacturing reinforced concrete structure |
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