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A curing device and method for cooling and humidifying inside of mass concrete

A large-volume concrete and concrete technology, which is applied in the processing of building materials, construction, building construction, etc., can solve the problems of inability to humidify and maintain concrete

Active Publication Date: 2021-05-14
CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A humidification mechanism is installed in it, but since there are no ventilation holes inside the conveying pipeline, the humidification mechanism cannot perform humidification and maintenance on the inside of the concrete.

Method used

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  • A curing device and method for cooling and humidifying inside of mass concrete
  • A curing device and method for cooling and humidifying inside of mass concrete
  • A curing device and method for cooling and humidifying inside of mass concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] like Figure 1-2 As shown, a curing device for cooling and humidifying the interior of large-volume concrete in this embodiment includes an air refrigerator 1, an atomizer 2 and an air-conditioning pipeline; the air-conditioning pipeline includes a main air-conditioning pipeline 3 and a plurality of The cold air buried pipe 4 in the concrete 5, the air outlet of the air refrigerator 1 and the mist discharge port of the atomizer 2 are connected to the cold air main pipe 3, and the cold air main pipe 3 is simultaneously connected to a plurality of cold air buried pipes 4, and the cold air buried pipe inlet 8 A control valve 7 is arranged; a plurality of ventilation holes 6 are arranged on the wall of the cold air buried pipe 4 . The outlet 9 of the cold air buried pipe is located outside the concrete. The atomizer adopts a high-power ultrasonic atomizer. The refrigeration equipment adopts industrial air conditioners, and its power is customized according to the construc...

Embodiment 2

[0041] like Figure 3-4 As shown, compared with Embodiment 1, the cold air buried pipe outlet 9 of this embodiment is connected to a vacuum pipe, and a vacuum pump 10 and an electronic vacuum gauge 11 are arranged on the vacuum pipe. The outlet of the vacuum pump 10 is connected to the air inlet of the atomizer 2 . The inner wall of the cold air buried pipe 4 is provided with a ventilation and anti-blocking retaining ring 12 . A plurality of moisturizing rings 13 are arranged in the inner wall of the cold gas buried pipe 4, and the plurality of moisturizing rings 13 are evenly arranged along the length direction of the cold gas buried pipe; A plurality of temperature sensors and humidity sensors are fixedly arranged on the outer periphery of the concrete 5 and the inner steel bars. The temperature and humidity sensor is an integrated probe-type temperature and humidity sensor 14 . A plurality of stress sensors 15 are also fixedly arranged on the steel bars on the periphery ...

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Abstract

The present invention relates to a curing device and method for cooling and humidifying the interior of large-volume concrete. The curing device includes an air refrigerator, an atomizer, and a cold air pipeline; The circuitous air-conditioning buried pipe, the air outlet of the air refrigerator and the mist exhaust port of the atomizer are connected to the main air-conditioning pipe, and the main air-conditioning pipe is connected to multiple air-conditioning buried pipes at the same time, and the inlet of the air-conditioning buried pipe is provided with a control valve; the air-conditioning buried pipe Multiple ventilation holes are set on the pipe wall; the invention uses low-temperature atomized water vapor instead of cooling water as the refrigerant to achieve the dual effects of internal cooling and humidity curing, and can simultaneously reduce drying shrinkage and temperature shrinkage to effectively achieve crack resistance; large-scale storage and cooling are not required on site Water engineering facilities; cooling air preparation with high efficiency and low cost; no risk of pipe burst during construction cooling; after the cooling period after the concrete condenses, the cooling pipe can be directly filled with water, and further wet curing can be continued through water seepage.

Description

technical field [0001] The invention belongs to the field of construction, and in particular relates to a curing device and method for cooling and humidifying the interior of large-volume concrete. Background technique [0002] Today, cracks are still a persistent problem that plagues mass concrete structures. Research and practice show that temperature stress is the main reason for cracking of mass concrete during construction and operation. During the construction period, the hydration reaction of the cementitious material in the concrete generates a lot of heat, which will cause the temperature of the structure to rise. In the later stage, the temperature stress generated by the overall cooling temperature difference under the action of external constraints is likely to cause structural penetrating cracks. Therefore, controlling the early hydration temperature rise of concrete is one of the most important measures to prevent cracking. [0003] After decades of engineer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04G21/02
CPCE04G21/02
Inventor 李家正李明霞林育强颉志强周世华石妍陈霞闫小虎杨梦卉张建峰
Owner CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION