Introduction to concrete pipes and hoses

Concrete pipes and hoses are essential elements in the process of transporting and placing concrete at construction sites. These components allow the concrete to be transported from the mixing plant or mixing truck to the exact place of application, thus facilitating efficiency and quality in the execution of structures.

They are designed to withstand the particular characteristics of fresh concrete, such as its high abrasiveness, weight and pressure during pumping. The correct design, selection and maintenance of these pipes and hoses guarantees the continuity of the construction process and the durability of the installation.

Manufacturing materials

Concrete pipes and hoses are manufactured from materials specifically selected to resist the abrasion and constant pressure of fresh concrete. The most common materials include carbon steel for rigid tubing and fabric-reinforced rubber for flexible hoses.

Carbon steel is used for its high mechanical strength and durability, allowing it to resist impacts and high pressures. On the other hand, hoses are usually composed of an inner layer of abrasion-resistant rubber, reinforced with nylon or steel fabric to increase its pressure resistance and flexibility.

Internal coatings are usually smooth to prevent concrete buildup and facilitate continuous flow. In addition, the materials must be compatible with the chemical additives present in the concrete, thus guaranteeing a longer useful life.

Pressure and abrasion resistance

Concrete pipes and hoses must withstand internal pressures that can vary between 10 and 30 bar, depending on the pumping equipment and transport distance. This resistance is essential to avoid ruptures and leaks during pumping.

Abrasion is another critical factor, because concrete contains solid particles such as sand and gravel that erode the inside of pipes and hoses. Therefore, special materials and designs are used that minimize this wear, such as reinforced internal coatings and thick walls.