Post Date: 13, Dec, 2021
The early-strength agent can greatly shorten the final setting time of the concrete under the premise of ensuring the quality of the concrete, so that it can be demoulded as soon as possible, thereby speeding up the turnover of the formwork, saving the amount of formwork, saving energy and saving cement, reducing production costs, and improving concrete The output of the product.
It takes a long time for the cement in the concrete for construction to set and harden to reach its strength. However, in some large-scale engineering concrete prefabricated components or construction in cold seasons, it is often necessary to obtain higher strength in a shorter period of time. Therefore, the early strength agent is usually added in the concrete mixing process to achieve the purpose of hardening in a short time. The early-strength agent can harden the cement in a short time under an environment of not lower than -5°C, which can greatly improve the strength of cement paste, mortar and concrete. Incorporating an early-strength agent in the concrete mixture not only ensures the water-reducing, strengthening and compacting effects of concrete, but also gives full play to the advantages of the early-strength agent. The inclusion of early-strength agent in the concrete can ensure the quality of the concrete and improve the progress of the project, greatly simplifying and reducing the requirements for curing conditions.
The two main functions of the early strength agent:
One is to make the concrete reach a higher strength in a short time to meet the requirements of withstanding external forces. Second, when the temperature is low, the hardening strength of the mortar is slower, especially in some frozen soil layers, the lower the strength, the greater the damage to the mortar. If the mortar is damaged by freezing, it will cause permanent damage to the mortar, so at a lower temperature Early-strength agent must be added.
The difference between early strength agent and early strength water reducing agent:
Early-strength agent and early-strength water-reducing agent are literally different only in the number of words, but if you understand the effects of these two products, there is still a big difference. The early-strength agent can harden the cement in a short time when put into the concrete, especially in the low temperature environment, the effect of this product is more obvious. The early-strength water-reducing agent plays a role in reducing the moisture in the concrete.
Post time: Dec-13-2021