How to use Marine Rubber Fender?

Marine Rubber Fender is installed on various tug boats, and the vessel is wrapped in Rubber Fender. Marine Rubber Fender, which has been frequently used under extreme conditions for a long time, also has certain requirements for users. So how to use Marine Rubber Fender, let's take a look.

Here is the content list:

• Marine Rubber Fender Molding

• Fixing and inflation of Marine Rubber Fender

• Concrete pouring

Marine Rubber Fender Molding

Before the Marine Rubber Fender is put into the mold, it must be inflated on the ground to check whether the mandrel is damaged or leaks in the early construction, to ensure that the mandrel pulled out is intact, and to eliminate quality risks during the pouring of concrete. After the concrete pouring at the bottom of the slab girder is completed, the Marine Rubber Fender is pulled into the steel cage with ropes. If the mandrel is large, it can be pulled by a winch and guided by a fixed pulley. The mandrel must be tied with a white longitudinal rope, and the steel wire rope cannot be used to directly contact the air mold, so as not to damage the prefabricated hollow slab mandrel. Then, pay attention to the longitudinal interface of the mandrel sheath when inserting the Marine Rubber Fender, to reduce the conflict between the sheath and the concrete when pulling out. In general, the length of the Rubber Fender is 50cm longer than that of the plate girder, and the length of both ends is 25cm. After the prefabricated hollow slab mandrel is in place and inflated, it can ensure the joint tight chamber at the intersection with the slab beam end formwork, preventing grout leakage and seepage during the concrete pouring process, which will cause trouble to the construction.

Fixing and inflation of Marine Rubber Fender

To ensure that the slab girder reinforcement protection layer and the slab girder cavity part meet the planning and standard requirements, and prevent the mandrel from floating up during the concrete pouring process, the positioning hoops are fixed with steel bars at an interval of 50cm. The positioning steel bar is firmly welded to the plate beam steel bar, and the internal diameter standard of the positioning steel bar is the same as the cavity standard. After the Marine Rubber Fender is in place, open the intake valve and inflate it with an air compressor. The Rubber Fender manufacturer pointed out that the pressure gauge is used to control and monitor the air pressure during inflation, and the inflation pressure of the mandrel depends on the model. When the air pressure reaches the applied pressure, close the air valve and inflate intermittently. Be careful not to over-pressurize your Safety Marine Rubber Fender when inflating it. The bladder should be inflated before initial use and sufficient time to achieve applied pressure measured for each set. The number of air compressors required should be determined according to the initial setting time of the concrete to ensure that the vertical bars of the slab girder and the upper concrete is poured before the initial setting of the lower concrete to prevent the formation of construction joints and ensure the integrity of the concrete of each slab girder.

Concrete pouring

Marine Rubber Fender mixes the retarder into the concrete, and the initial setting time reaches 8 hours, so there is enough time to complete the support and other processes. The negative reinforcement of the core formwork and the slab girder is combined before the initial setting of the concrete under the slab girder. When pouring concrete at both ends of the mandrel, pay attention to vibrating symmetrically from both ends to prevent the mandrel from leading displacement. Do not touch the core mold during vibration to prevent damage. After the final set of concrete, the Marine Rubber Fender can be pulled out from the slab girder by flipping the valve to the exhaust.

For more questions about Marine Rubber Fender, please contact us. Years of accumulated experience in R&D and production will provide you with more product services and technical support! Our official website is www.cmrqd.com.