Contents of this article
Can concrete be poured when it is 0 degrees during the day and 0 degrees at night?
How long does it take for concrete with antifreeze to solidify?
What is the pouring temperature of commercial concrete for winter construction after it arrives at the construction site?
Will concrete poured at zero temperature freeze?
What is the business scope of Commercial Concrete Business License?
Is it possible to use 0-degree concrete cast-in-place roof?
Can concrete be poured when it is 10 degrees during the day and 0 degrees at night?
Concrete can be struck at 10 degrees during the day and 0 degrees at night. Concrete can be made when it is not lower than minus 5 degrees Celsius. The higher the temperature, the faster the concrete will solidify. The lower the temperature, the slower it will solidify. My house was built in the eleventh month of the lunar calendar, and the temperature at that time was between 5 and minus 6 degrees. It has not had any impact. It has been more than 20 years and everything is fine. Those who are planning to build a house should rest assured.
How long does it take for concrete with antifreeze to solidify?
Generally the initial setting time is 4-10 hours. The dosage of the admixture and the retarding time of the admixture are generally 8 to 12 hours. The admixtures used in the test are not suitable for cement. The main manifestation is that there is less water-reducing component and more retarding component. In this case, in order to achieve good slump and slump loss with time of the concrete mix.
There are many factors that influence the abnormal condensation of cement concrete. Concrete admixtures, cement, admixtures, ambient temperature and wind speed may ultimately lead to the occurrence of abnormal condensation of cement concrete. Judging from the quality of concrete projects at this stage, the type of retarder, improper retarder dosage, incompatibility between admixtures and cement, and ambient temperature are the main reasons for abnormal condensation of cement concrete and even accidents in concrete projects.
What is the pouring temperature of commercial concrete for winter construction after it arrives at the construction site?
1. When constructing concrete pouring in winter, when adding antifreeze according to the specifications, when the temperature is 5℃ lower than the specified temperature of the antifreeze, concrete can no longer be poured. This refers to generally unimportant construction parts; you As for simple maintenance measures, I personally suggest that even if antifreeze is added to commercial concrete, construction should be stopped without taking insulation measures when the temperature drops below -5°C. 2. Antifreeze should also be added to the masonry mortar. If antifreeze is not added, insulation measures must be taken. Other similar concretes
Will concrete poured at zero temperature freeze?
Concrete will be frozen at zero degrees, and it will be frozen at about minus five degrees. If the temperature is too low, the solidification time of concrete will be prolonged, and the internal water crystallization will cause cracks in the concrete, ultimately affecting the strength of the concrete. Concrete construction is not suitable when the local temperature is too low.
Precautions for winter construction are as follows:
1. During winter construction, pay attention to the local temperature conditions. If the local temperature is too low, for example, the temperature is below 5 degrees, it is usually not recommended to continue construction, otherwise the construction quality will be affected. For example, when applying latex paint, if the construction temperature is lower than 5 degrees, the problem of incomplete paint film formation will occur.
2. During winter construction, it is easy to stop work due to sudden temperature drop. Therefore, when ordering building materials, it is necessary to calculate the amount of building materials to avoid excess building materials. Building materials should be stored in a dry place. When storing building materials, they can be covered with cotton felt to prevent the building materials from freezing.
3. If the construction is in winter, relevant anti-freeze measures must be taken. For example, before concrete construction, do not wash the construction surface with water to avoid moisture crystallization. During concrete construction, you can add antifreeze to enhance the antifreeze function of the product. After the concrete is poured, the curing time should be appropriately extended. During the maintenance period, its surface can be covered with straw curtains to enhance the thermal insulation effect, etc.
What is the business scope of Commercial Concrete Business License?
Business scope one of the commercial concrete business license:
Production, sales and consultation of commercial concrete and raw materials; production and sales of cement products; development, production, technology transfer and technical services of building materials; Sales of building materials; leasing of construction machinery and equipment; general freight; freight agency; warehousing services (operating with a license only if the state has special regulations).
Business Scope 2 of Commercial Concrete Business License:
The R&D, production and Sale. (Projects that require approval according to law can only carry out business activities with the approval of relevant departments)
Business scope three of commercial concrete business license:
Add company's high-quality concrete and concrete admixtures (antifreeze agent, early strength agent); general cargo transportation; special cargo transportation (tank type). (Enterprises independently select business projects and carry out business activities in accordance with the law; projects that require approval in accordance with the law shall carry out business activities in accordance with the approved content after being approved by the relevant departments; they are not allowed to engage in business activities that are prohibited or restricted by the city’s industrial policies
Is it possible to use 0-degree concrete cast-in-place roof?
Yes, antifreeze has been added to the commercial mixing station. You just need to do a good job of maintenance.
1. Concrete will not freeze above zero. However, due to the low temperature, the setting time of concrete will be greatly delayed and the strength will increase very slowly.
2. Therefore, usually in such When the temperature is high, two things need to be done when pouring concrete. One is to increase the mixing and molding temperature of the concrete. The other is to cover the concrete with plastic sheeting and insulation materials for insulation and curing after the concrete is poured. This will allow the concrete to increase in strength quickly. , arrive as soon as possible�Critical strength of concrete. In the future, even if the temperature drops below zero, the concrete will not be frozen and cause strength loss. </p
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