Brief introduction of neoprene rod for face dam
Neoprene rod product introduction: Neoprene rod is mainly composed of neoprene rubber and various synthetic rubbers as main raw materials, mixed with various additives and fillers, after plasticizing, mixing, extrusion molding, high temperature Vulcanization, it has aging resistance, oil resistance, wear resistance, suitable for the ambition data of the face dam. Standard types: φ20φ40φ50φ60 and many types are produced according to customer needs.
When pouring concrete, the vibrator must not damage the pre-dissolving mold and the outlet pipe. After the concrete is poured, the path between the ground and the cavity is only two outgoing pipes per section. In order to improve the quality of waterproofing, the pouring of the water stop is reconstructed to postpone as much as possible. During this period of time, strengthen the protection of the outlet pipe, take management measures to strengthen on-site management, and prevent the outlet pipe from being damaged and man-made during construction. 13785855258
With the progress of the construction, when it is necessary to cast the rubber waterstop, the mold-dissolving agent is injected through the upper outlet pipe to dissolve the mold-dissolving material, and the cavity is cleaned with water in time. After washing the cavity, connect the lower outlet pipe to the grouting equipment, and inject the grouting liquid into the cavity. The grouting material is "liquid expansion rubber", which is a polymer grouting material. High pressure injection can fill the capillary holes and micro cracks of the concrete. The water swells repeatedly, up to more than a thousand times, without precipitates, without water reduction, maintaining elasticity. The injection speed should not be too fast during grouting. Observe the discharge of the upper outlet pipe. When the slurry flows out, close the upper outlet pipe. Continue to pressurize the grouting, when the slurry has obvious channeling, you can hold the pressure for 3 to 5 minutes, close the lower outlet tube, and the grouting is completed.
Rubber rod features:
The conventional water-stop structure type of the face dam generally chooses three water-stops, that is, the surface joint is provided with a plastic filler for cover maintenance, a water stop is provided in the middle of the joint, and a copper water stop is provided at the bottom of the joint. Engineering practice has proved that it is difficult for the rubber dam of the face dam to be closely combined with concrete during construction, and water leakage often occurs.Together, under the effect of joint displacement, the gathering strain occurring in the joint of the rubber dam of the face dam is large. The function of the descending structure, that is, the movable water stop type is structurally flawed.
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