Slip form construction method in environment with high temperature and large temperature difference

Abstract

The invention relates to a slip-form construction method in a high-temperature environment with big temperature difference, and the method belongs to the field of civil engineering construction methods, and is characterized in that concrete is mixed by sections according to the time and temperature, and the used amount of additive and the number of ice blocks are adjusted by sections according to the time and temperature; the slip-mode casting speed of the concrete is controlled by sections according to the time and temperature, and the surface strength of stripped concrete is controlled to be 0.2MPa to 0.4Mpa; a framework is intermittently lifted according to the changes of the temperature difference; and the technical difficult problems of concrete slip-form construction in the high-temperature environment with big temperature difference are solved, the slip-form construction quality of a reinforcing steel bar-concrete cylinder body structure in the high-temperature environment with big temperature difference is ensured, the construction period is shortened, and the cost is reduced.

Description

technical field [0001] The invention belongs to a civil construction method, in particular to a sliding form construction method for a reinforced concrete cylinder structure. Background technique [0002] At present, in the domestic construction industry, for the slipform construction of reinforced concrete cylinder structures under high temperature (temperature 35°C, temperature difference 10°C), cement with relatively low heat of hydration is generally used to prepare concrete, and an appropriate amount of fly ash and external It can be used as an agent to reduce the concrete mold release temperature in high temperature environment, reduce slump loss, prolong the initial setting and final setting time, so as to meet the requirements of concrete sliding formwork construction technology in high temperature environment. [0003] For areas with an annual average maximum temperature of 39°C and a temperature difference of 20°C, especially in areas where the temperature is as hi...

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Problems solved by technology

[0003] For areas with an annual average maximum temperature of 39°C and a temperature difference of 20°C, especially in areas where the temperature is as high as 48°C between 10:00 noon and 3:00 pm, the slipform construction of reinforced concrete cylinder structures in high temperature and large temperature difference environments, Due to the rapid loss of concrete slump, the quality of the sliding form cannot be guaranteed only by using the existing sliding form construction method. Therefore, how to choose a suitable construction method is to ensure that the reinforced concrete cylinder structure sliding form can be used in the environment of high temperature and large temperature difference. key to realization

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