JPH02137902A - Cooling method and device for concrete mixing water - Google Patents
Cooling method and device for concrete mixing waterInfo
- Publication number
- JPH02137902A JPH02137902A JP63291996A JP29199688A JPH02137902A JP H02137902 A JPH02137902 A JP H02137902A JP 63291996 A JP63291996 A JP 63291996A JP 29199688 A JP29199688 A JP 29199688A JP H02137902 A JPH02137902 A JP H02137902A
- Authority
- JP
- Japan
- Prior art keywords
- mixing water
- concrete
- cooling
- water
- storage tank
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 88
- 238000001816 cooling Methods 0.000 title claims abstract description 66
- 238000003860 storage Methods 0.000 claims abstract description 23
- 238000005507 spraying Methods 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 33
- 239000004576 sand Substances 0.000 abstract description 23
- 239000007789 gas Substances 0.000 abstract description 20
- 239000007788 liquid Substances 0.000 abstract description 12
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 12
- 229910001873 dinitrogen Inorganic materials 0.000 abstract description 9
- 239000002699 waste material Substances 0.000 abstract description 6
- 239000007921 spray Substances 0.000 abstract description 4
- 238000004898 kneading Methods 0.000 description 13
- 230000000630 rising effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
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
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はコンクリート製造時に使用される練りまぜ水を
冷却するためのコンクリート練りまぜ水冷却方法および
装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a concrete mixing water cooling method and apparatus for cooling mixing water used during concrete production.
コンクリートは周知のとおり、プレクーリングを行うこ
とにより硬化熱の影響によるひびわれを防止するととも
に長期強度を増大することができる。コンクリートをプ
レクーリングする手段としては従来より様々なものが提
供されており、例えば、ミキサーで練りまぜ中のコンク
リートを冷却（プレクーリング）するもの、あるいは骨
材等のコンクリート材料を予め冷却しておくもの、など
がある。これらコンクリートのプレクーリングにおける
冷却方法として、液体窒素（ＬＮ、）等の液化ガスの冷
熱を利用方法がある。As is well known, by pre-cooling concrete, it is possible to prevent cracking due to the effects of curing heat and increase long-term strength. Conventionally, various methods have been provided as means for pre-cooling concrete, such as methods for cooling (pre-cooling) concrete being mixed in a mixer, or methods for pre-cooling concrete materials such as aggregates. There are things, etc. As a cooling method for pre-cooling concrete, there is a method of utilizing the cold energy of liquefied gas such as liquid nitrogen (LN).
ところで、従来のプレクーリング法によるコンクリート
（あるいはコンクリート材料）の冷却は、それらコンク
リート又はコンクリート材料中に前記液化ガスを直接混
入することにより行われるものであるが、例えばそれら
コンクリート材料との熱交換を終え気化した液化ガスは
そのまま大気に放出されるものであるため、比較的冷熱
利用効率の高いとされるサンドプレクール法（骨材とし
ての砂・砂利を冷却するもの）においても排ガスの放出
により冷熱の１０〜２０％を無駄に排出しているのが現
状である。また、排気温度が低いため排気口付近の大気
中水分が霧状化して白煙を上げ、外観的に好ましくない
状況にあった。By the way, cooling of concrete (or concrete materials) using the conventional pre-cooling method is performed by directly mixing the liquefied gas into the concrete or concrete materials. Since the liquefied gas that has finished vaporizing is released into the atmosphere as it is, even in the sand pre-cooling method (cooling sand and gravel used as aggregate), which is said to have a relatively high efficiency in using cold energy, cold heat is still generated by releasing exhaust gas. Currently, 10 to 20% of waste is wasted. In addition, because the exhaust temperature was low, moisture in the atmosphere near the exhaust port atomized and produced white smoke, resulting in an unfavorable appearance.
本発明は上記の事情に鑑みてなされたもので、コンクリ
ートのプレクーリングに使用される液化ガスの廃冷熱を
有効に利用し得るコンクリート練りまぜ水の冷却方法と
、その装置とを提供しようとするものである。The present invention has been made in view of the above-mentioned circumstances, and aims to provide a method and apparatus for cooling concrete mixing water that can effectively utilize the waste cold energy of liquefied gas used for pre-cooling concrete. It is something.
第１項記載の発明は、コンクリート練りまぜ水を、コン
クリートあるいは骨材等コンクリ−１・のプレクーリン
グに使用された冷却用液化ガスの排気ガス中に噴霧する
ことにより冷却することを特徴とするものである。The invention described in item 1 is characterized in that concrete mixing water is cooled by spraying it into the exhaust gas of a cooling liquefied gas used for pre-cooling concrete or aggregate. It is something.
また、第２項記載の発明は、コンクリートを製造する際
に使用されるコンクリート練りまぜ水を予め冷却するた
めのコンクリート練りまぜ水冷却装置であって、コンク
リートあるいは骨材ｉコンクリートのプレクーリングを
行うコンクリート冷却装置から発生した冷却用液化ガス
の排気ガスを外気に放出するための排出ダクトと、コン
クリート練りまぜ水を貯蔵する練りまぜ水貯留９ンクと
、該練りまぜ水貯留タンク内の水を取り出して前記排出
ダクト内に噴出させる給水噴霧手段とを備えたものとし
、しかも前記排出ダクトを、該排出ダクト内に噴出され
た前記コンクリート練りまぜ水を前記練りまぜ水貯留タ
ンクに回帰せしめるべく前記練りまぜ水貯留タンクに連
通させたものである。In addition, the invention described in item 2 is a concrete mixing water cooling device for pre-cooling concrete mixing water used in producing concrete, which pre-cools concrete or aggregate i-concrete. An exhaust duct for discharging the exhaust gas of cooling liquefied gas generated from the concrete cooling equipment to the outside air, a mixing water storage tank 9 for storing concrete mixing water, and taking out the water in the mixing water storage tank. and a supply water spraying means for spouting the concrete mixing water into the discharge duct, the discharge duct being connected to the concrete mixing water spraying means for causing the concrete mixing water spouted into the discharge duct to return to the mixing water storage tank. It is connected to the mixed water storage tank.
第１項記載のコンクリート練りまぜ水の冷却方法では、
コンクリート冷却装置において使用される冷却用液化ガ
スの廃冷熱を有効に利用することができる。In the method for cooling concrete mixing water described in paragraph 1,
The waste cold energy of the cooling liquefied gas used in the concrete cooling system can be effectively utilized.
第２項記載のコンクリート練りまぜ水の冷却装置によれ
ば、極めて簡単な構成でもって上記１項記戦の発明を効
果的に実現することができる。According to the concrete mixing water cooling device described in item 2, the invention described in item 1 can be effectively realized with an extremely simple configuration.
以下、本発明を図面を参照しながら説明する。 Hereinafter, the present invention will be explained with reference to the drawings.
図は本発明に係るコンクリート練りまぜ水冷却装置の一
実施例で、本発明をサンドプレクール工法装置に適用し
た例を示すものである。The figure shows an embodiment of the concrete mixing water cooling device according to the present invention, and shows an example in which the present invention is applied to a sand pre-cooling method device.
このコンクリート練りまぜ水冷却装置１は、内部に練り
まぜ水（、Ｗ）を貯蔵する練りまぜ水貯留タンク２と、
サンドプレクーリング装置１０において発生した排気ガ
スを外気に放出するための排出ダクト３と、練りまぜ水
貯留タンク２内の水Ｗを取り出して排出ダクト３内に噴
出させるための給水噴霧手段４とを有して構成される。This concrete mixing water cooling device 1 includes a mixing water storage tank 2 that stores mixing water (, W) inside,
A discharge duct 3 for discharging the exhaust gas generated in the sand pre-cooling device 10 to the outside air, and a water supply spraying means 4 for taking out the water W in the mixing water storage tank 2 and spouting it into the discharge duct 3. It is composed of:
前記サンドプレクール工法装置ｌＯは、骨材となる砂Ｓ
を冷却（プレクーリング）するためのもので、冷却砂製
造ミキサー１１に液体窒素（ＬＮｔ）を供給するための
液体窒素供給管１２が接続されてなる。The sand pre-cooling method device 1O uses sand S as an aggregate.
A liquid nitrogen supply pipe 12 for supplying liquid nitrogen (LNt) to the cooling sand production mixer 11 is connected to the cooling sand manufacturing mixer 11.
符号１３は撹拌羽根である。Reference numeral 13 is a stirring blade.
前記排出ダクト３はその全長における途中に図示される
ように垂直に上昇する立ち上がり部３ａを形成しており
、その立ち上がり部３ａの下端部は前記練りまぜ水貯留
タンク２の上部に開口され、これによって排出ダクト３
と練りまぜ水貯留タンク２とが連通されたものとなって
いる。υ［出ダクト３はその全長にわたりダクト外壁面
を断熱材２０により被覆されている。As shown in the figure, the discharge duct 3 forms a rising part 3a that rises vertically, and the lower end of the rising part 3a is opened at the upper part of the mixing water storage tank 2. By discharge duct 3
The kneaded water storage tank 2 is connected to the kneaded water storage tank 2. υ[The outer wall surface of the outlet duct 3 is covered with a heat insulating material 20 over its entire length.
前記給水噴霧手段４は、一端が前記練りまぜ水貯留タン
ク２における底部付近に、他端が排出ダクト３の立ち上
がり部３ａに開口した管路５と、該管路５に介装された
ポンプ６と、管路５における前記立ち上がり部３ａ側の
間口部に設けられた噴霧ノズル７とから構成されている
。また、練りまぜ水貯留タンク２からは、内部の水Ｗを
所要場所に取り出すための練りまぜ水供給配管８がポン
プ９を介して延出している。The water supply spraying means 4 includes a conduit 5 with one end opening near the bottom of the kneaded water storage tank 2 and the other end opening into the rising portion 3a of the discharge duct 3, and a pump 6 interposed in the conduit 5. and a spray nozzle 7 provided at the frontage of the conduit 5 on the side of the rising portion 3a. Further, a mixing water supply pipe 8 extends from the mixing water storage tank 2 via a pump 9 for taking out the water W inside to a required location.
以下、上記構成なるコンクリート練りまぜ水冷却装置１
の作用とともに、本発明に係るコンクリート練りまぜ水
冷却方法を説明する。Hereinafter, the concrete mixing water cooling device 1 having the above configuration will be explained.
The concrete mixing water cooling method according to the present invention will be explained along with the function thereof.
サンドプレクール工法装置１０の作動と同時に冷却砂製
造ミキサーｌｌ内に液体窒素供給管１２より液体窒素（
ｔ、Ｎｔ ）を混入させ、かつそれと同時に前記給水噴
霧手段３を構成するポンプ６を作動させる。Simultaneously with the operation of the sand pre-cooling method device 10, liquid nitrogen (
t, Nt), and at the same time, the pump 6 constituting the water supply spraying means 3 is operated.
液体窒素供給管１２よりサンドプレクール工法装置１０
内に混入された液体窒素（ＬＮｔ）は撹拌羽根１３によ
り砂Ｓと共に混練され、その過程において液体窒素（ｔ
−Ｎｔ）の冷熱が砂Ｓに付与される。すなわちこれによ
って砂Ｓの冷却（プレクーリング）が実行される。砂Ｓ
より熱を奪った液体窒素（ＬＮｔ）は気化し、０℃〜−
５０℃の窒素ガス（ＧＮ、）として排出ダクト３内を放
出口３ｂの方に向かう。一方、ポンプ６の作動により、
練りまぜ水Ｗは練りまぜ水貯留タンク２から管路５およ
び噴霧ノズル７を経て、立ち上がり部３ａから排出ダク
ト３内に噴霧される。排出ダクト３内に霧状に噴出され
た練りまぜ水Ｗは窒素ガス（ＧＮｔ ）と接触し、そこ
で窒素ガス（ＧＮ、）との熱交換を行う。つまり噴霧さ
れた練りまぜ水Ｗが窒素ガス（ＧＮｔ ）の冷熱を奪う
わけである。Sand pre-cooling method device 10 from liquid nitrogen supply pipe 12
The liquid nitrogen (LNt) mixed in is mixed with the sand S by the stirring blade 13, and in the process, the liquid nitrogen (LNt) is mixed with the sand S.
−Nt) is applied to the sand S. That is, cooling (pre-cooling) of the sand S is thereby performed. sand S
Liquid nitrogen (LNt), which has absorbed more heat, evaporates and heats from 0°C to -
Nitrogen gas (GN) at 50° C. is passed through the discharge duct 3 toward the discharge port 3b. On the other hand, due to the operation of the pump 6,
The mixing water W passes from the mixing water storage tank 2 through the pipe line 5 and the spray nozzle 7, and is sprayed into the discharge duct 3 from the rising portion 3a. The kneading water W spouted into the discharge duct 3 in the form of mist comes into contact with nitrogen gas (GNt), where it exchanges heat with the nitrogen gas (GN, ). In other words, the sprayed mixing water W takes away the cooling energy from the nitrogen gas (GNt).
噴霧された練りまぜ水Ｗは水滴となって排出ダクト立ち
上がり部３ａの壁面を流下するか、ないしは霧状のまま
立ち上がり部３ａ内を下方に降下し、やがて練りまぜ水
タンク２内に回帰するが、その際、排出ダクト壁面は排
出ダクト３内を移動する窒素ガス（ＧＮｔ）により冷却
されているものであるから、壁面を流下する水滴はその
流下中においてさらに冷却される。また、霧状のまま降
下する練りまぜ水Ｗについても降下中において窒素ガス
（ＧＮ、）との熱交換が行なわれ一層冷却される。The sprayed mixing water W becomes water droplets and flows down the wall surface of the discharge duct rising part 3a, or falls downward in the rising part 3a in a mist form, and eventually returns to the mixing water tank 2. At this time, since the discharge duct wall surface is cooled by the nitrogen gas (GNt) moving within the discharge duct 3, the water droplets flowing down the wall surface are further cooled while flowing down. Furthermore, the kneading water W that descends in the form of a mist also undergoes heat exchange with nitrogen gas (GN) during its descent and is further cooled.
上記練りまぜ゛水冷却装置ｌによれば以上の如くして練
りまぜ水Ｗの冷却が実現される。According to the kneading water cooling device 1 described above, cooling of the kneading water W is realized as described above.
しかも該装置１は、サンドプレクール工法装置１０の廃
冷熱を有効に利用したものであるから特別な冷熱源を別
途必要とせず経済性の面で極めて有効であるばかりでな
く、排気ガスも練りまぜ水Ｗとの熱交換により温度が上
昇し、大気に放出された際の白煙を低減させることがで
きる。さらに、練りまぜ水Ｗを霧状として窒素ガス（Ｏ
Ｎ、）との熱交換を行うものであるから高い熱交換率を
得ることができることに加え、練りまぜ水Ｗは練りまぜ
水貯留タンク２と排出ダクト３とを循環させることが可
能であるから、極めて低温度のものとすることができる
。また、装置全体は、練りまぜ水貯留タンク２と排出ダ
クト３との間に給水噴霧手段４を形成するとともに、排
出ダクト３の一部を、噴霧された練りまぜ水Ｗが練りま
ぜ水貯留タンク２に回収されるように形成するだけで構
成することができるから極めて簡便である。Moreover, since the device 1 effectively utilizes the waste cold energy of the sand pre-cooling method device 10, it does not require a separate special cold source and is not only extremely effective in terms of economy, but also mixes exhaust gas. The temperature increases due to heat exchange with water W, and white smoke when released into the atmosphere can be reduced. Furthermore, the kneaded water W is atomized and nitrogen gas (O
N,), it is possible to obtain a high heat exchange rate, and the kneading water W can be circulated between the kneading water storage tank 2 and the discharge duct 3. , can be of extremely low temperature. In addition, the entire device includes a water supply spraying means 4 between the kneading water storage tank 2 and the discharge duct 3, and a part of the discharge duct 3 is connected to the kneading water storage tank where the kneading water W is sprayed. It is extremely simple because it can be constructed by simply forming it so that it can be collected in the second stage.
なお実施例では、本発明をサンドプレクール工法装置に
適用した例を説明したが、本発明はこの例に限らず液化
ガスを使用するその他のコンクリート冷却装置、例えば
コンクリートミキサー（冷却砂製造ミキサーでなく）に
液化ガスを直接封入させるコンクリート冷却装置等にも
同様に適用できるものであることは言うまでもない。In the examples, an example was explained in which the present invention was applied to a sand pre-cooling method device, but the present invention is not limited to this example, but can be applied to other concrete cooling devices that use liquefied gas, such as a concrete mixer (not a cooling sand manufacturing mixer). It goes without saying that the present invention can be similarly applied to concrete cooling equipment, etc., in which liquefied gas is directly charged into a container.
以上説明したとおり本発明によれば、コンクリート冷却
装置に使用された冷却用液化ガスの廃冷熱を有効に利用
してコンクリート練りまぜ水を効果的に冷却し得、特別
な冷熱源を一切必要とすることなくコンクリート練りま
ぜ水を冷却し、製造コンクリート（生コンクリート）を
プレクーリングし、打設コンクリートの品質を向上させ
ることができ、かり排気の白煙化をも低減させることが
できる。さらに本発明の装置によれば、上記作用を極め
て簡単な構成でもって確実に実現することができること
に加え、練りまぜ水を循環させることにより練りまぜ水
を極めて低温度にまで冷却することができる、といった
優れた効果を奏するものである。As explained above, according to the present invention, concrete mixing water can be effectively cooled by effectively utilizing the waste cold energy of the cooling liquefied gas used in the concrete cooling device, and no special cold source is required. It is possible to cool the concrete mixing water and pre-cool manufactured concrete (fresh concrete) without having to do so, thereby improving the quality of poured concrete, and also reducing white smoke from the exhaust gas. Further, according to the device of the present invention, in addition to being able to reliably achieve the above-mentioned effects with an extremely simple configuration, the kneading water can be cooled to an extremely low temperature by circulating the kneading water. It has excellent effects such as.
図面は本発明の一実施例を示すもので、サンドプレクー
ル工法装置に適用したコンクリート練りまぜ水冷却装置
を示す概略構成図（断面）である。
ｌ・・・・・・コンクリート練りまぜ水冷却装置、２・
・・・・・練りまぜ水貯留タンク、３・・・・・・排出
ダクト、 ４・・・・・・給水噴霧手段、ｌＯ・・
・・・・サンドプレクール工法装置（骨材冷却装置）、
Ｗ・・・・・・練りまぜ水。The drawing shows one embodiment of the present invention, and is a schematic configuration diagram (cross section) showing a concrete mixing water cooling device applied to a sand pre-cooling method device. l... Concrete mixing water cooling device, 2.
... Kneading water storage tank, 3 ... Discharge duct, 4 ... Water supply spray means, lO ...
...Sand pre-cooling method equipment (aggregate cooling device), W... Kneading water.
Claims (1)
骨材等コンクリートのプレクーリングに使用された冷却
用液化ガスの排気ガス中に噴霧することにより冷却する
ことを特徴とするコンクリート練りまぜ水冷却方法。 ２）コンクリートを製造する際に使用されるコンクリー
ト練りまぜ水を予め冷却するためのコンクリート練りま
ぜ水冷却装置であって、コンクリートあるいは骨材等コ
ンクリートのプレクーリングを行うコンクリート冷却装
置から発生した冷却用液化ガスの排気ガスを外気に放出
するための排出ダクトと、コンクリート練りまぜ水を貯
蔵する練りまぜ水貯留タンクと、該練りまぜ水貯留タン
ク内の水を取り出して前記排出ダクト内に噴出させる給
水噴霧手段とを有して構成され、しかも前記排出ダクト
は、該排出ダクト内に噴出された前記コンクリート練り
まぜ水を前記練りまぜ水貯留タンクに回帰せしめるべく
前記練りまぜ水貯留タンクに連通されていることを特徴
とするコンクリート練りまぜ水冷却装置。[Claims] 1) A concrete mixing method characterized in that concrete mixing water is cooled by spraying it into the exhaust gas of a cooling liquefied gas used for pre-cooling concrete or concrete such as aggregate. Water cooling method. 2) A concrete mixing water cooling device for pre-cooling the concrete mixing water used in the production of concrete, which is used for cooling generated from the concrete cooling device that pre-cools concrete, aggregates, etc. A discharge duct for discharging liquefied gas exhaust gas to the outside air, a mixing water storage tank for storing concrete mixing water, and a water supply for taking out the water in the mixing water storage tank and spouting it into the discharge duct. and a spraying means, and the discharge duct is connected to the mixing water storage tank in order to return the concrete mixing water spouted into the discharge duct to the mixing water storage tank. A concrete mixing water cooling device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63291996A JP2840655B2 (en) | 1988-11-18 | 1988-11-18 | Concrete kneading water cooling method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63291996A JP2840655B2 (en) | 1988-11-18 | 1988-11-18 | Concrete kneading water cooling method and apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02137902A true JPH02137902A (en) | 1990-05-28 |
| JP2840655B2 JP2840655B2 (en) | 1998-12-24 |
Family
ID=17776173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63291996A Expired - Fee Related JP2840655B2 (en) | 1988-11-18 | 1988-11-18 | Concrete kneading water cooling method and apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2840655B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06270133A (en) * | 1993-03-18 | 1994-09-27 | Osaka Gas Co Ltd | Cooled concrete casting method and apparatus |
| JP2005288698A (en) * | 2004-03-31 | 2005-10-20 | Kyc Machine Industry Co Ltd | Cooled concrete manufacturing method and apparatus therefor |
| EP4173790A1 (en) * | 2021-10-27 | 2023-05-03 | Messer SE & Co. KGaA | Device for producing cooled fresh concrete |
| EP4173791A1 (en) * | 2021-10-27 | 2023-05-03 | Messer SE & Co. KGaA | Apparatus and method for producing cooled fresh concrete |
| EP4173789A1 (en) * | 2021-10-27 | 2023-05-03 | Messer SE & Co. KGaA | Method and device for producing cooled fresh concrete |
Citations (3)
| 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 |
| JPS6426407A (en) * | 1987-07-23 | 1989-01-27 | Takenaka Komuten Co | Manufacture of cooled concrete due to low-temperature liquefied gas and manufacturing device |
| JPH0254508U (en) * | 1988-10-08 | 1990-04-19 |
-
1988
- 1988-11-18 JP JP63291996A patent/JP2840655B2/en not_active Expired - Fee Related
Patent Citations (3)
| 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 |
| JPS6426407A (en) * | 1987-07-23 | 1989-01-27 | Takenaka Komuten Co | Manufacture of cooled concrete due to low-temperature liquefied gas and manufacturing device |
| JPH0254508U (en) * | 1988-10-08 | 1990-04-19 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06270133A (en) * | 1993-03-18 | 1994-09-27 | Osaka Gas Co Ltd | Cooled concrete casting method and apparatus |
| JP2005288698A (en) * | 2004-03-31 | 2005-10-20 | Kyc Machine Industry Co Ltd | Cooled concrete manufacturing method and apparatus therefor |
| JP4583792B2 (en) * | 2004-03-31 | 2010-11-17 | 光洋機械産業株式会社 | Cooling concrete production equipment |
| EP4173790A1 (en) * | 2021-10-27 | 2023-05-03 | Messer SE & Co. KGaA | Device for producing cooled fresh concrete |
| EP4173791A1 (en) * | 2021-10-27 | 2023-05-03 | Messer SE & Co. KGaA | Apparatus and method for producing cooled fresh concrete |
| EP4173789A1 (en) * | 2021-10-27 | 2023-05-03 | Messer SE & Co. KGaA | Method and device for producing cooled fresh concrete |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2840655B2 (en) | 1998-12-24 |
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| R250 | Receipt of annual fees |
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| LAPS | Cancellation because of no payment of annual fees |