Polypropylene fibers in concrete construction projects for the construction is very convenient, both for pouring concrete, but also for the eruption of concrete, precast concrete and cast concrete. See detailed construction skills as follows:
 
    1,polypropylene fiber content in concrete volume to account for, usually, per cubic meter of concrete for incorporation 0.9-1.2kg, the length of the fiber is 12-19MM.
 
    2, adding fiber without changing cooperation than the original concrete, high demand for certain functions crack concrete works, but also to the choice of mixing together polypropylene fibers and expanders. During polypropylene plastic fiber can reduce crack shorten the gap, and bulking agents can reduce shrinkage cracks, the two complement each other.

    3, in order to avoid the polypropylene fibers in concrete into the group, perhaps lax uniform, uniform batches can choose to participate in the way ,, In addition, optimal use mechanical forced mixing. Polypropylene fiber can before concrete mixing, mixing process or participate in a variety of mixing different circumstances, such as after the completion. Under normal circumstances, the attending dry material (sand, cement, etc.) and water and then participate in the polypropylene fibers, mixing time and agitation methods can be based on the mixing machine mix varieties to be. Typically concrete mixing time than usual to extend 30-60S.

    4, after adding polypropylene fiber, concrete systems and viscosity may be added, resulting in lower slump concrete system, but this does not affect the function of the concrete. If it can not meet the demand slump, pouring comparison difficult, usually not add water, can add the proper dosage of superplasticizer.

    5, after the polypropylene fiber concrete mixing still needs plenty of tap.

    6, there are concrete mixing the best selection of metal template polypropylene fibers after form removal, were usually used twice when pressing pressure surface, in the process of pressing, the best choice of metal trowel, in order to avoid a color fibers.

    7, adding there is no need to maintain the special needs of fiber reinforced concrete, the concrete is still in accordance with the usual way of maintaining proper maintenance can be carried out.