Mixing water cooling method and mass concrete summer construction temperature control method
A temperature control method and technology for large-volume concrete, applied in the direction of mixing operation control, mixing operation control device, pretreatment control, etc., can solve the problem of effective cooling of large-volume concrete, achieve good cooling effect, prolong cooling time, prolong The effect of volatilization time
Pending Publication Date: 2022-01-28
中建西部建设北方有限公司 +1
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Problems solved by technology
[0004] In view of the related technologies mentioned above, the inventor believes that there is a problem that it is difficult to effectively cool down the mass concrete by only adding dry ice during the concrete mixing process during mass concrete construction in summer
Method used
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Comparison scheme
Effect test
Embodiment 1
[0036] Step S1: judge the ambient temperature, the maximum ambient temperature is 32°C;
[0037] Step S2: Between 9:00 and 18:00, add ice cubes to the mixing water every 3 hours, and monitor the water temperature in real time to ensure that the water temperature is lower than 15 degrees Celsius.
Embodiment 2
[0039] Step S1: judging the ambient temperature, the maximum ambient temperature is 36°C;
[0040] Step S2: Add ice cubes according to the normal addition method between 30°C and 35°C, add urea and dry ice alternately to the mixing water between 12:00 noon and 14:00 pm, first add urea, then add dry ice, and Real-time detection of water temperature to ensure that the water temperature is below 15 degrees Celsius.
Embodiment 3
[0042] The difference from Example 2 is: when the maximum ambient temperature is 36°C, in step S2, ice cubes are normally added according to the method of adding between 30°C and 35°C, between 12:00 noon and 14:00 pm Add urea and dry ice to the mixing water at the same time, and monitor the water temperature in real time.
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The invention relates to the field of concrete construction, and particularly discloses a mixing water cooling method and a mass concrete summer construction temperature control method. The method comprises the following steps: step 1, detecting an environment temperature; determining a temperature control method according to the environment temperature, wherein when the highest environment temperature ranges from 30 DEG C to 35 DEG C, ice blocks are added into the mixing water, and when the highest environment temperature is higher than 35 DEG C, the ice blocks are normally used, and then urea and dry ice are added into the mixing water; cooling the concrete admixture and the aggregate; and 2, adding the admixture and the aggregate into the mixing water together, and uniformly stirring to obtain the concrete. According to the mixing water for the concrete, due to the combined action of the urea and the dry ice, the cooling effect on the mixing water for the concrete is good, so that the mass concrete prepared by adopting the method has the advantage that the temperature difference between the inside and the outside is small.
Description
technical field [0001] The application relates to the field of concrete construction, more specifically, it relates to a method for cooling mixing water and a method for controlling the temperature of large-volume concrete in summer construction. Background technique [0002] Modern buildings often involve mass concrete construction, such as high-rise building foundations, large-scale equipment foundations, water conservancy dams, etc. The main feature of mass concrete is that it is large in size, and the release of cement hydration heat is relatively concentrated, resulting in a relatively rapid rise in temperature inside the concrete. When the temperature difference between the inside and outside of the concrete is large, it will cause temperature cracks in the concrete, which will affect the structural safety and normal use of the concrete building. [0003] In the related art, the Chinese application document with the application number 201810051500.6 discloses a self-co...
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IPC IPC(8): B28C7/00B28C5/00
CPCB28C7/0038B28C5/003
Inventor 罗作球丁路静张凯峰王军孟刚陈全滨李微高建梁国立
Owner 中建西部建设北方有限公司