A concrete hose is a flexible, wear-resistant industrial rubber hose. It moves concrete around construction sites. Like all equipment, concrete pump hoses have a limited lifespan. Typically, you should replace them after they’ve delivered 20,000 cubic meters of concrete. Even during normal use, though, problems can arise. The most common issue is blockage. When a hose clogs, it slows down construction significantly. Worse, it can even stop work entirely. Let’s explore the reasons behind concrete pump rubber hose blockages.
Factors that cause concrete hose blockage
First, failing to lubricate the pump pipe before pumping concrete is a common culprit. Without lubrication, the pipe absorbs water from the concrete. This absorption leads directly to blockages.
Second, overly large aggregates in the concrete or long-term segregation of the mixture can cause clogs. These issues disrupt the smooth flow, trapping material inside the hose.
Third, air or slurry leaks at the delivery pump pipe’s interface can also block the hose. Leaks create pressure imbalances, which disrupt the concrete’s movement and lead to buildup.
Fourth, a large concrete drop can produce excess free water. This extra water increases friction inside the pump pipe, making it harder for concrete to flow and eventually causing blockages.
Finally, neglecting to clean the concrete hose after use is a sure way to cause clogs. Leftover material inside the hose dries and hardens, blocking future flow.