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Under what conditions is calcium formate used as early strength agent

2020-03-12

1. Express cement concrete pavement or bridge deck pavement, especially the level crossing of class I, II and III Highway. When one direction of cement concrete pavement is paved, not only the road under construction can not be opened to traffic, but also the vehicles in other directions of grade crossing can not use Calcium Formate early strength cement concrete in night construction, which can provide convenient vehicle traffic in the shortest time.
2. For prestressed reinforced concrete structures, such as prestressed reinforced concrete bridge tensioning at low temperature or early tensioning at normal temperature, it is necessary to use early strength agent to accelerate the prestressed tensioning time and improve the production speed of components.
The Formic ACID in calcium formate belongs to weak acid, and there is hydrolysis process in the aqueous solution. Therefore, the aqueous solution of calcium formate should be weak alkaline, and it can also be used in reinforced concrete for industrial calcium formate to have the effect of early strength and initial setting.

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