Working condition of low pressure industrial hoses
A concrete hose is a flexible and wear – resistant industrial rubber hose, specifically designed to transport concrete at construction sites. Concrete pump hoses have a limited service life; generally, they should be replaced after delivering 20,000 cubic meters of concrete. Moreover, during regular use, various issues can arise, with hose blockage being the most common problem. When this occurs, it significantly hinders the construction progress and often leads to downtime. Now, let’s explore the factors that cause blockages in concrete pump rubber hoses.
Factors Causing Concrete Hose Blockages
Lack of Pipe Lubrication
If the pump pipe isn’t lubricated before starting to pump concrete, it will absorb the water from the concrete mixture. As a result, this lack of lubrication and moisture absorption can cause the pipe to become blocked.
Unsuitable Aggregate
When the aggregate in the concrete is too large or has segregated over time, it can obstruct the flow within the hose, ultimately leading to blockage.
Leakage at Pipe Interfaces
Air leakage and slurry leakage at the delivery pump pipe interfaces disrupt the smooth flow of concrete. This disruption can gradually cause blockages to form.
Excessive Concrete Drop
A large concrete drop can cause free water to separate out, increasing the friction inside the pump pipe. This heightened friction makes it more likely for blockages to occur.
Inadequate Cleaning
Failing to clean the concrete hose after use leaves residual material inside. Over time, this leftover concrete can harden and cause blockages.
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