concrete precooling method by means of dry ice

Concrete Precooling Method by Means of Dry Ice

Nov 01, 1993  Title: Concrete Precooling Method by Means of Dry Ice Author(s): H. Takeuchi, Y. Tsuji, and A. Nanni Publication: Concrete International Volume: 15 Issue: 11 Appears on pages(s): 52-56 Keywords: cooling; durability; heat of hydration; hot weather construction; ice; mass concrete; Construction Date: 11/1/1993 Abstract: The modern day sophistication of necessary infrastructure

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Concrete precooling method by means of dry ice ...

Nov 01, 1993  The precooling method to control thermal cracking due to heat of hydration in mass concrete structures, especially during hot weather concreting, is considered. This method using dry ice as a cooling medium has been found to operate properly and efficiently. Original language. English. Pages (from-to) 52-56.

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CONCRETE PRECOOLING METHOD BY MEANS OF DRY ICE

CONCRETE PRECOOLING METHOD BY MEANS OF DRY ICE. The various methods for controling thermal cracking in mass concrete structures is noted, and precooling is considered the most effective countermeasure. A new type of precooling is described, which uses dry ice as cooling medium because it has a high latent heat of 137 kcal/kg.

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FUNDAMENTAL RESEARCH ON PRECOOLING METHOD BY

Precooling method is thought to be an effective way to control thermal cracks due to the heat of hydration for mass concrete structures. The authors executed a fundamental research on new type of precooling method by use of Dry Ice as a cooling medium.

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Precooling Method by Means of Dry Ice as a Cooling Media

Mar 09, 1991  The authors have initiated the fundamental research on precooling method with Dry Ice. And a prototype test was conducted in order to verify the cooling efficiency, manufacturing efficiency of cooled concrete, concrete strengths and concrete neutralization degrees

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Precooling Mass Concrete Concrete Construction Magazine

Aug 12, 2005  Precooling the concrete can reduce the peak temperature. ... Ice: The most common, yet perhaps least understood, cooling method is replacing mix water with ice. This cools concrete in two ways: It first lowers the mix-water temperature and then lowers the mix temperature by extracting heat during the phase change from ice to water. This ...

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CiNii 論文 - 冷却媒体としてドライアイスを用いたプレクーリング

The authors have initiated the fundamental research on precooling method with Dry Ice. And a prototype test was conducted in order to verify the cooling efficiency, manufacturing efficiency of cooled concrete, concrete strengths and concrete neutralization degrees when using an actual batching plant.

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Chapter 8: METHODS OF STORAGE-PRECOOLING, PRE STOR

Methods for Precooling Produce . There are seven principal methods of pre-cooling fresh produce: 1) Room cooling 2) Forced-air cooling 3) Hydro-cooling 4) Ice cooling 5) Vacuum cooling 6) Cryogenic cooling 7) Evaporative cooling Considerable loss in quality and shelf life can occur as a result of holding harvested produce

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CiNii 論文 - 冷却媒体としてドライアイスを用いたプレクーリング

The authors have initiated the fundamental research on precooling method with Dry Ice. And a prototype test was conducted in order to verify the cooling efficiency, manufacturing efficiency of cooled concrete, concrete strengths and concrete neutralization degrees when using an actual batching plant.

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Guide to Hot Weather Concreting - American Concrete

A.2—Estimating temperature of concrete with ice Appendix B—Methods for cooling fresh concrete, p. 23 B.1—Cooling with chilled mixing water B.2—Liquid nitrogen cooling of mixing water B.3—Cooling concrete with ice B.4—Cooling mixed concrete with liquid nitrogen B.5—Cooling of coarse aggregates ... allowed to dry at early ages ...

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Thermo–mechanical coupled analysis for tunnel lining with ...

Aug 01, 2020  Using a water cooling pipe is another method for concrete cooling (Liu et al., 2013, Liu et al., ... Air cooling of concrete by means of embedded cooling pipes—Part II: application in design. Mater. ... Concrete precooling method by means of dry ice. Concr. Int., 15 (1993), pp. 52-56. View Record in Scopus Google Scholar.

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305R-20: Guide to Hot Weather Concreting

A.2—Estimating temperature of concrete with ice, p. 25 APPENDIX B—METHODS FOR COOLING FRESH CONCRETE, p. 25 B.1—Cooling with chilled mixing water, p. 25 B.2—Liquid nitrogen cooling of mixing water, p. 25 B.3—Cooling concrete with ice, p. 25 B.4—Cooling mixed concrete with liquid nitrogen, p. 26 B.5—Cooling of coarse aggregates, p. 26

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US3583172A - Cryogenic cooling of concrete - Google Patents

A concrete mixture may be cooled to any desired temperature range specification prior to pouring, by spraying or injecting a cryogenic liquid, such as liquid nitrogen, directly onto or into the concrete mixture while it is being mixed in a conventional rotating mixer.

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Temperature variation in concrete samples due to cement ...

Jun 25, 2016  Therefore, concrete-pouring methods must be used. Thinner concrete layers reveal themselves as an interesting way for controlling temperature, as long as heat has a shorter way to range until dissipated in surface. Ice, as a precooling method, seems to work as good as expected.

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CiNii 論文 - 冷却媒体としてドライアイスを用いたプレクーリン

Precooling method is thought to be an effective way to control thermal cracks due to the heat of hydration for mass concrete structures. The authors executed a fundamental research on new type of precooling method by use of Dry Ice as a cooling medium.

get price

How To Plan and Manage Curing for Mass Concrete Pours ...

Jul 29, 2014  Pre-cooling - Means to pre-cool concrete include shading and sprinkling the coarse aggregate pile with water, using chilled mix water, replacing mix water with shaved or chipped ice

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Concrete MCQ - Objective Question answer for Concrete ...

(iii) Reduce the temperature of the concrete by: Precooling aggregate with water. Cooling the cement. Using chipped ice to cool mixing water. Shading aggregates, water tanks, and lines. (iv) Avoid overmixing. Concrete should be poured in layer. (v) Place concrete early in

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استفسار بخصوص الصب في الاجواء الحاره ملتقى المهندسين العرب

Jun 06, 2018  Precooling of aggregate in a closed mixer by means of liquefied carbonic acid gas (dry ice), which melts at –78 °C, has also been tried.Mix water can be chilled or can be replaced, usually only partially, by crushed or flaked ice; ice is

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1193 冷却媒体としてドライアイスを用いたプレクーリング工法

1199 Effect of Water and Mixing Time on the Mixing Energy and Workability of Concrete Mixture [1] ... 1193 A Research on Precooling Method by means of Dry Ice as a Cooling Media 著者 (creator)

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US2727734A - Method of and apparatus for cooling concrete ...

US2727734A US231561A US23156151A US2727734A US 2727734 A US2727734 A US 2727734A US 231561 A US231561 A US 231561A US 23156151 A US23156151 A US 23156151A US 2727734 A US2727734 A US 2727734A Authority US United States Prior art keywords aggregates compartments aggregate conveyor spraying Prior art date 1951-06-14 Legal status (The legal status is an

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Special Concreting Techniques - SlideShare

Jan 05, 2015  • The methods used for placing concrete under water are: • Bagged Concrete • Bottom dump bucket • Tromie • Grouted aggregate • Concrete pump. 18. Under Water Concrete • Bagged Concrete: • In some situations gunny bags are filled about 2/3 rd. full with dry or semi-dry mixture of cement, fine and coarse aggregate.

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EP1550535B1 - Method and apparatus for manufacturing ...

Method for controlling concrete precooling slump by monitoring current intensity of stirrer US9726589B2 (en) * 2013-03-14: 2017-08-08: M-I L.L.C. Apparatus and method to measure a property of wellbore fluid CN104614289A (en) * 2015-02-06: 2015-05-13: 河海大学常州校区: Concrete viscosity monitoring system

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Guide to Hot Weather Concreting - American Concrete

A.2—Estimating temperature of concrete with ice Appendix B—Methods for cooling fresh concrete, p. 23 B.1—Cooling with chilled mixing water B.2—Liquid nitrogen cooling of mixing water B.3—Cooling concrete with ice B.4—Cooling mixed concrete with liquid nitrogen B.5—Cooling of coarse aggregates ... allowed to dry at early ages ...

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305R-20: Guide to Hot Weather Concreting

A.2—Estimating temperature of concrete with ice, p. 25 APPENDIX B—METHODS FOR COOLING FRESH CONCRETE, p. 25 B.1—Cooling with chilled mixing water, p. 25 B.2—Liquid nitrogen cooling of mixing water, p. 25 B.3—Cooling concrete with ice, p. 25 B.4—Cooling mixed concrete with liquid nitrogen, p. 26 B.5—Cooling of coarse aggregates, p. 26

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Temperature variation in concrete samples due to cement ...

Jun 25, 2016  Therefore, concrete-pouring methods must be used. Thinner concrete layers reveal themselves as an interesting way for controlling temperature, as long as heat has a shorter way to range until dissipated in surface. Ice, as a precooling method, seems to work as good as expected.

get price

EP1550535B1 - Method and apparatus for manufacturing ...

Method for controlling concrete precooling slump by monitoring current intensity of stirrer US9726589B2 (en) * 2013-03-14: 2017-08-08: M-I L.L.C. Apparatus and method to measure a property of wellbore fluid CN104614289A (en) * 2015-02-06: 2015-05-13: 河海大学常州校区: Concrete viscosity monitoring system

get price

US7384180B2 - Method and apparatus for manufacturing ...

Method and apparatus for manufacturing concrete mass, the concrete mass being manufactured in a mixer, and the torque caused by the mixing of the concrete mass to the mixing elements used for mixing of the concrete mass and/or the power consumption of the drive of the mixer, being measured in said method. The torque caused to the mixing elements of the concrete mass and/or the power ...

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US20050141338A1 - Method and apparatus for manufacturing ...

Method and apparatus for manufacturing concrete mass, the concrete mass being manufactured in a mixer, and the torque caused by the mixing of the concrete mass to the mixing elements used for mixing of the concrete mass and/or the power consumption of the drive of the mixer, being measured in said method. The torque caused to the mixing elements of the concrete mass and/or the power ...

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Concrete MCQ - Objective Question answer for Concrete ...

(iii) Reduce the temperature of the concrete by: Precooling aggregate with water. Cooling the cement. Using chipped ice to cool mixing water. Shading aggregates, water tanks, and lines. (iv) Avoid overmixing. Concrete should be poured in layer. (v) Place concrete early in

get price

1193 冷却媒体としてドライアイスを用いたプレクーリング工法

1199 Effect of Water and Mixing Time on the Mixing Energy and Workability of Concrete Mixture [1] ... 1193 A Research on Precooling Method by means of Dry Ice as a Cooling Media 著者 (creator)

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1199 ドライアイスを用いたプレクーリングエ法による貯水池側

Proceedings of the Japan Concrete Institute 出版地 (publicationPlace) ... 1199 Construction Report of Side Wall for a Reservoir by Use of Precooling Method by Means of Dry Ice as a Cooling Media 著者

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استفسار بخصوص الصب في الاجواء الحاره ملتقى المهندسين العرب

Jun 06, 2018  Precooling of aggregate in a closed mixer by means of liquefied carbonic acid gas (dry ice), which melts at –78 °C, has also been tried.Mix water can be chilled or can be replaced, usually only partially, by crushed or flaked ice; ice is

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Mixing Temperature - an overview ScienceDirect Topics

The other method is making tube ice or flake ice directly at the worksite, which is then added into the mixer, eliminating the process of crushing the ice. The device has the features of less site area, and could be directly placed in the concrete mixing house. At present, people incline toward the flake ice, about 3 cm long and 2 mm thick ...

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Industrial Concrete Cooling System, Concrete Cooling ...

One of our Concrete Cooling Solution is the Focusun Concrete Ice Cooling System for batch plants. It consists of a water chiller, ice maker, ice storage, ice delivery and ice scale. Excessive heat during cement hydration (the curing and hardening process of cement) can impair the strength of concrete.

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Concrete Temperature - an overview ScienceDirect Topics

R. Gagné, in Science and Technology of Concrete Admixtures, 2016 17.4.2.2 Temperature. The increase of concrete temperature results in a decrease of the volume of entrained air. In winter, AEAs can lose some of their efficiency when hot water is used to heat concrete; in such a case, it is better to start to introduce the hot water and later the AEA when the water has increased the ...

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(PDF) Guide to Mass Concrete Bryan Widjaja - Academia

Download. Guide to Mass Concrete. Bryan Widjaja. 1.2-HistoryWhen concrete was first used in dams, the dams were relatively small and the concrete was mixed by hand. The portland cement usually had to be aged to comply with a boiling soundness test, the aggregate was bank-run sand and gravel, and proportioning was by the shovelful (Davis 1963).

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