How to pump special materials? Saintyol DAWIN concrete delivery pump solves the challenges of UHPC high-difficulty pouring.
With the upgrading of infrastructure quality, UHPC (Ultra-High Performance Concrete) is widely used in key projects such as bridge paving, component prefabrication, tunnel reinforcement, and prefabricated buildings due to its ultra-high strength, high toughness, and high durability. Unlike ordinary commercial concrete, UHPC has an extremely low water-cement ratio and high slurry viscosity.
In some applications, steel fibers are also incorporated, resulting in complex material rheological characteristics that place stringent demands on the pressure, flow structure, and wear-resistant components of pumping equipment. In many projects, directly using ordinary concrete pumps to transport UHPC easily leads to problems such as insufficient pressure, fiber snagging and clumping, pipeline blockage, and material segregation. Once a blockage occurs, it not only delays the construction period and requires time and effort to clean the pipeline, but also damages the original material properties of UHPC, directly affecting the quality of component molding. This is a major headache for many construction companies. Besides UHPC, the project site also handles a large number of special pumped materials: steel fiber reinforced concrete, self-compacting special slurries, refractory castables, 3D printing building slurries, fine aggregate special mortars, etc. Each type of material has different viscosity, thixotropy, and fiber content, making it difficult for general-purpose pumps to handle all working conditions. Incorrect equipment selection often directly leads to project cost losses. Based on extensive on-site testing experience, Qingdao Saintyol DAWIN Machinery has conducted comprehensive optimization of its high-pressure concrete pump to address the challenges of pumping UHPC and various special materials. From hydraulic power, flow channel structure, wear-resistant parts to the control system, the optimization is tailored to the conveying needs of high-viscosity, fiber-containing special slurries.
In terms of the power system, the high-pressure series delivery pump is equipped with a high-pressure hydraulic unit, whose output pressure can meet the long-distance, high-lift delivery requirements of UHPC. The constant-power variable main oil pump has sufficient output power to cope with the pipeline resistance caused by the high yield stress of UHPC. The pressure output during the pumping process is stable, without sudden pressure rises and falls, reducing slurry shear damage, ensuring the original homogeneity of UHPC materials, and avoiding segregation and bleeding. The flow-through components have been streamlined and upgraded. The inner wall of the S-tube valve is welded with wear-resistant alloy, reducing pipeline dead angles and lowering the risk of steel fiber snagging, entanglement, and retention, allowing fiber-containing UHPC slurry to pass smoothly through the pump body and pipeline.
The high-hardness wear-resistant spectacle plate and cutting ring are erosion-resistant and wear-resistant, significantly reducing core component wear when facing UHPC slurry with high silica fume content and high abrasiveness, extending the continuous operation time of the equipment, and reducing downtime losses caused by frequent parts replacement. Equipped with an intelligent hydraulic control system, it can realize stepless adjustment of the discharge rate to adapt to different construction and pouring speeds of UHPC. In low-speed pumping mode, the discharge pulsation is small, and the discharge is uniform and stable, which can meet the needs of continuous casting of precast components and is also suitable for fine construction of small-scale repair and reinforcement. At the same time, it supports one-button switching between forward and reverse pumping, and can quickly reverse pump to release pressure in case of abnormal pressure, reducing the probability of pipe blockage and improving on-site operation safety.
Not only UHPC ultra-high performance concrete, Saintyol DAWIN Machinery full range of delivery pumps can cover many types of special material pumping operations. Steel fiber concrete, self-compacting concrete, refractory castables, fine stone special mortar, and 3D printing thixotropic slurry. Depending on the material properties, conveying distance, and lift height, standard models or customized transformation solutions can be provided. Whether it is a factory prefabricated component workshop or a field bridge or tunnel reinforcement site, the corresponding pumping solution can be matched. Pumping of special materials can never be accomplished simply by placing the equipment in place. Equipment hardware, pipeline selection, material mix ratio, and on-site operation technology need to cooperate with each other. Qingdao Saintyol DAWIN Machinery not only provides hardware equipment, but also relies on years of project practice accumulation to simultaneously output working condition selection suggestions, pipeline layout references, and on-site pumping operation points to customers to help construction parties avoid common problems such as pipe blockage and material performance damage, and truly realize integrated services of equipment + technical solutions. From ordinary concrete to UHPC ultra-high performance concrete, from conventional housing construction to special infrastructure projects, Qingdao Saintyol DAWIN Machinery adheres to its original intention of heavy industry manufacturing, continues to overcome technical difficulties in pumping special materials, and uses reliable equipment to help more high-quality special concrete projects be implemented efficiently.
