The difference between concrete retarder and early strength agent, is the two mutually exclusive?

Yes. Concrete retarder is to delay the initial setting time of concrete, that is, to inhibit the hydration rate of cement. The early strength agent is to increase the hydration rate and facilitate the strength of concrete.

of early improvements. The two cannot be mixed, the former is used for temperatures above 5 degrees, and the latter is used for temperatures below 5 degrees.

Retarders, retarders and retarding superplasticizers can be used for large-volume concrete.

RCC, concrete for construction in hot climates, concrete for pouring over a large area, avoiding cold joints.

Concrete produced, concrete that needs to be parked for a long time or transported over long distances, self-leveling.

Vibration-free concrete, concrete for slipform construction or drawing formwork, and other concrete that requires a delay in setting time.

It is suitable for the construction of concrete with a daily minimum temperature of more than 5, and should not be used alone for concrete and steaming concrete with early strength requirements, and it is suitable for use.

Select the variety according to the temperature and adjust the dosage to meet the engineering requirements before it can be used. Early strength agent and early strength superplasticizer are suitable for steaming concrete and concrete projects with early strength requirements for construction at room temperature, low temperature and minimum temperature not less than -5 environment. In a hot environment, it is not advisable to use early strength agent and early strength superplasticizer.

With the above two aspects, it can be generally seen that these two admixtures should not be used at the same time.

It is the difference between two words, one is strong and the other is condensation.

One is an increase in early intensity, such as how much it has increased relative to the standard three- or seven-day intensity.

One is to speed up the coagulation rate, such as how much the initial or final setting time is reduced compared to the standard setting.

Early strength agent is an admixture that can improve the early strength of concrete and has no significant effect on the later strength, including sulfate early strength agent, the most widely used is sodium sulfate, which is a retarding type of early strength agent; Quick-setting agent is an admixture that makes concrete set and harden rapidly, the main components are sodium aluminate and sodium carbonate, and sodium sulfate should be produced in alkaline solution with gypsum in cement, resulting in aluminic acid. The most widely used is sodium sulfate, which is said in textbooks, the main components are sodium aluminate and sodium carbonate, and sodium sulfate should be produced in alkaline solution and gypsum in cement, which leads to the rapid hydration of calcium aluminate mineral C3A. Both of them are sodium sulfate to promote cement hydration, and are retarding early strength agents; Quick-setting agent is an admixture that makes concrete set and harden quickly

Early strength additives are admixtures that can improve the early strength of concrete and have no significant effect on the later strength, including sulfate early strength agents. What exactly is the difference.

There are three commonly used early strength agents:

1. Chloride is an early strong trembling agent. The effect is good, in addition to improving the early strength of concrete, there is also the effect of promoting coagulation and anti-freezing, low price and easy to use. Withered.

2. Sulfate is an early strength agent. For example, sodium sulfate, also known as Yuanmyeongdong lack of powder, is a white powder, mostly used in compounds.

3. The organic matter system is early and strong. Organic series of early strength agents mainly include triethanolamine, triisopropanolamine, methanol, ethanol, etc., and the most commonly used is triethanolamine. Triethanolamine is a colorless or light yellow transparent oily liquid, which is easily soluble in water, has a retarding effect, and is often used in combination with other early strength agents.