A kind of steam curing method and device

Abstract

The invention discloses a steam curing method and device. The steam curing method comprises the following steps that after being formed through pouring, a concrete member is put in a steam curing housing for delaying curing for first duration at the normal temperature; the temperature in the steam curing housing is raised at a first constant speed to a first steam curing temperature; the temperature in the steam curing housing is kept to be the first steam curing temperature, steam curing is conducted on the concrete member, and the lasting time is second duration; the temperature in the steam curing housing is raised at a second constant speed to a second steam curing temperature, and the second speed is higher than the first speed; the temperature in the steam curing housing is kept to be the second steam curing temperature, steam curing is conducted on the concrete member, the lasting time is third duration, and the third duration is longer than the second duration; the temperature in the steam curing housing is lowered at a third constant speed to the normal temperature; and delaying curing is conducted on the concrete member for fourth duration at the normal temperature. According to the steam curing method and device, precise control over the temperature can be achieved, and the strength of the member is effectively improved.

Description

Technical field [0001] The invention relates to the field of concrete component manufacturing, in particular to a steam curing method for steam curing of precast concrete box culvert components, and a corresponding steam curing device. Background technique [0002] After the concrete components are poured, they have to go through four stages of static stop, heating, constant temperature and cooling to reach the expected engineering strength. Among them, the static stop stage (the temperature and humidity are suitable and the wind speed is very small) only needs to be placed outdoors, and the steaming stage requires a high temperature and high humidity environment, so it can only be carried out in a special steaming hood. Existing steam curing methods usually use a one-time heating method during the heating stage, and the components are prone to cracks. At the same time, the heating acceleration is small, the required time is longer, and the strength of the concrete components can...

AI Technical Summary

Problems solved by technology

The existing steam curing method usually adopts a one-time heating method in the heating stage, and the components are prone to cracking. At the same time, the acceleration of heating is small, and the time required is long, and the strength of the concrete components cannot reach the maximum expected value.

Existing devices are usually relatively simple and cannot meet the requirements for high-precision control of temperature and humidity. When processing some components with high quality requirements, the yield is low, which seriously affects production efficiency.

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