Intelligent method for moisture retention spraying curing of concrete through coupling of temperature, humidity and wind speed

Abstract

The invention provides an intelligent method for moisture retention spraying curing of concrete through the coupling of temperature, humidity and wind speed to scientifically realize moisture retention curing of concrete. The intelligent method is characterized by comprising the following steps: 1, arranging a protective layer on the surface of concrete, and selecting and arranging a spraying device; 2, arranging an environment data real-time acquisition system to acquire air temperature, air humidity and wind speed in real time; 3, carrying out intelligent spraying curing: 3-1, determining aspraying time Tk; 3-2, calculating a spraying stop time Tb, receiving the air temperature, the air humidity and the wind speed acquired in the step 2 by a computer, and calculating the spraying stop time Tb based on the air temperature, the air humidity and the wind speed, wherein the minimum value of calculation results in a formula 1 and a formula 2 is selected as the spraying stop time Tb; 3-3,carrying out cyclic curing: adopting computer to control the spraying device to spray according to the spraying time Tk, and control the spraying device to stop spraying according to the spraying stop time Tb, wherein the cyclic curing is carried out continuously until a curing age is reached.

Description

technical field [0001] The invention belongs to the field of concrete maintenance of engineering structures, and in particular relates to an intelligent method for coupling temperature, humidity and wind (temperature, humidity and wind speed) of moisturizing and spraying maintenance. Background technique [0002] Concrete curing means that after concrete is poured, it gradually hardens due to cement hydration, and hydration requires appropriate temperature and humidity conditions, so in order to ensure that the concrete has suitable hardening conditions and its strength continues to grow. From the principle of humidity exchange, curing must ensure that there is sufficient humidity inside the concrete, and there is basically no humidity exchange between the concrete on the curing surface and the air, that is, the curing must maintain the humidity of the concrete, hereinafter referred to as moisturizing curing. [0003] Concrete curing includes natural curing and steam curing....

AI Technical Summary

Problems solved by technology

[0005] (1) Manual maintenance, backward technology, not suitable for the era of information and intelligence;

[0006] (2) Modern labor costs are high, maintenance costs are high, and uneconomical;

[0007] (3) Humanity is strong, maintenance quality is related to the responsibility of personnel, and the quality assurance rate is low, which leads to insufficient maintenance, and micro-cracks on the surface of a large number of engineering concrete (such as figure 1 As shown in the flood discharge tunnel of the Sanbanxi Hydropower Station, surface cracks were formed in the early stage, and they penetrated under the action of temperature in the later stage), the cost of crack treatment in the later stage was high, the construction period was delayed, and the structural life was affected;

[0008] (4) The regularity of sprinkling water is poor, either the density is high and the water consumption is large, resulting in waste, or the density is not enough and the maintenance quality is poor;

[0009] (5) The maintenance department must moisturize, which is poor in science;

[0010] (6) There is no intelligence, intelligence, and no support from scientific theories and methods

Due to the large scale and volume of the structure (the height and width are often more than 20m, or even more than 100m, figure 2 ), in addition to the above five problems, it is difficult for sprinkling water to reach the upper and top of underground projects such as hydraulic tunnels, and large areas cannot be effectively maintained, resulting in serious concrete cracks in some projects. figure 1 Concrete cracks in the lining of the spillway tunnel of the Sanbanxi Hydropower Station, and it is obviously cracks due to insufficient maintenance

[0013] Based on the above situation, the commonly used concrete curing methods are poor in science, outdated in technology, insufficient in theory and method support, poor in concrete quality assurance, uneconomical, and cannot effectively achieve the goal of concrete moisture conservation

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