Post Date:25,Mar,2024
The low temperatures in winter have hindered the work of the construction parties. During concrete construction, effective measures need to be taken to prevent damage due to freezing during the concrete hardening process. Traditional antifreeze measures not only consume a lot of energy, but also require additional manpower and equipment, which increases construction complexity and cost.
So how should concrete be constructed in the cold winter? What methods can reduce the difficulty of concrete construction?
During winter construction of concrete, admixtures are generally used to increase efficiency. In fact, it has become a consensus in the industry to use admixtures to solve the problems of concrete construction in winter. For construction units, early-strength additives are given priority during concrete construction in winter. Concrete early-strength additives can accelerate the hardening speed of cement, making it hard and strong quickly. The critical strength can be reached before the internal temperature drops below 0°C, reducing the The complexity and difficulty of concrete construction in low-temperature environments also reduces construction costs.
In addition to early strength agents, antifreeze can also help in concrete construction. Concrete antifreeze can significantly reduce the freezing point of the liquid phase in concrete, inhibit water from freezing, accelerate the initial hydration of cement, and reduce ice crystal pressure. It should be reminded that the use temperature of antifreeze is the temperature that allows concrete construction, but it should be understood in connection with the critical anti-freeze strength of concrete, that is, before the ambient temperature drops to the use temperature of the admixture, the concrete must reach the critical anti-freeze strength. This way the concrete is safe.
Admixtures play an important role in ensuring the quality of concrete constructed in winter. Only by mastering the application points of admixtures in concrete winter construction and carrying out standardized construction can the quality of concrete be ensured.
Post time: Mar-26-2024