How to cure concrete, how to cure concrete

How to maintain the concrete after pouring?

1. After the concrete is successfully poured, the later maintenance is very important, first of all, it is necessary to determine the time of curing, generally speaking, within 12 hours after the completion of pouring, the concrete can be covered or moisturized maintenance engineering.

2. The main reason is that when the concrete begins to solidify, it is about 8 hours, so after the initial setting, the maintenance begins. The length of curing time can generally not be less than 7 days, if other admixtures or minerals are added to the concrete, the curing time needs to be extended to two weeks.

3. Of course, the length of maintenance time is directly related to the surrounding environment, temperature and wind speed. Pure slow.

4. Regarding the maintenance method, you can water or sprinkle water to cover the moisturizer, or brush the curing agent, and different maintenance methods should be carried out according to the temperature of the reed land at that time, the environment and the structural parts.

Concrete curing party sheng shouting method has:

1. Natural conservation: sprinkling water curing and spraying plastic film curing. The former is covered with concrete with Weixiao rock grass curtains, etc., and is often sprinkled with water to keep it moist.

The curing time depends on the cement type, such as ordinary Portland cement concrete, not less than 7 days and nights. The latter is suitable for high-rise structures and large-area concrete structures that are not easy to be cured by sprinkling, etc., and the perchloroethylene resin plastic solution is sprayed on the surface of the concrete with a spray gun, and a thin film is formed on the surface of the concrete after the solution volatilizes, isolating the concrete from the air, preventing the evaporation of water in the concrete, ensuring that the cement water is turned into a normal process, and the film can age and fall off by itself after the curing is completed.

2. Steam curing: The concrete components are placed in a curing chamber filled with saturated steam or steam and air mixture, and the concrete hardening is accelerated in a higher temperature and humidity environment. The curing effect is related to the steam curing system, which includes:

Static time, heating and cooling rate, curing temperature, constant temperature curing time, relative humidity, etc. before steam curing. The steam curing chamber has pit type, vertical kiln type and tunnel kiln type.

1. The curing of concrete is the longest in the whole project, and it also has the greatest impact on the quality of concrete. The reason why concrete can gradually harden and increase strength is the result of cement hydration, and the hydration of cement requires certain temperature and humidity conditions, so concrete curing is artificially caused by certain humidity and temperature conditions, so that the newly poured concrete can be normal or accelerate its hardening and strength growth.

2. In order to ensure the strength of concrete and prevent cracks in concrete due to surface drying, it needs to be cured, and watering is one of the methods of natural curing of concrete. Within 12 hours after pouring concrete at room temperature, it must be covered with thermal insulation and curing, ordinary cement is not less than 7 days, if you ignore the watering and curing of concrete, on the one hand, the strength of concrete will reduce the wheel envy, on the other hand, it will make the concrete in the hardening process too late to replenish water, so that a large amount of water is lacking, resulting in cracks.