Ultra-high performance concrete (UHPC) is a new building material with extremely high compressive strength and excellent durability, which is widely used in building curtain walls and other fields. Curved shapedUHPC curtain wall panelsThe production process is complex and the technical requirements are high, which will be detailed in this article.
1. UHPC material characteristics
UHPC is a new type of concrete material with high strength and high durability, and its compressive strength, tensile strength and toughness are far superior to ordinary concrete. Due to its excellent physical properties, UHPC is particularly suitable for the manufacture of complex shapes of building components, such as curved curtain wall panels.
Second, the curved surface modeling UHPC curtain wall panel production process
1. Mold making: First of all, you need to make a wooden mold or metal mold with curved surface shape according to the design drawings. The precision and finish of the mold have a significant impact on the appearance and quality of the final product.
2. Batching and stirring: According to the design requirements, the raw materials required for UHPC materials are accurately weighed, an appropriate amount of water and other additives are added, and fully stirred to ensure uniform mixing.
3. Pouring and vibrating: pour the stirred UHPC material into the mold, and use appropriate vibrating equipment to ensure that the concrete is compact.
4. Curing and demoulding: UHPC is cured under certain temperature and humidity conditions, and demoulding is carried out after hardening.
5. Surface processing and polishing: surface processing and polishing of the UHPC board after demoulding to meet the design requirements.
6. Quality inspection: Conduct quality inspection on the finished product to ensure that its performance indicators meet the design requirements.
3. Technical difficulties and solutions
1. Mold making: It is difficult to make molds with curved surface molding, which requires high-precision processing equipment and technology. The solution strategy is to use high-precision processing equipment such as CNC machine tools to improve the accuracy and finish of the mold.
2. Pouring and vibrating: due toUHPC materialHigh viscosity, prone to bubbles and insufficient density during pouring and vibrating. The solution strategy is to optimize the pouring method, use appropriate vibrating equipment, control the vibrating time and strength, and ensure that the concrete is compact.
3. Surface processing and polishing: In the process of surface processing and polishing, it is necessary to ensure the smoothness and gloss of the surface. The solution strategy is to adopt advanced processing equipment and polishing technology, such as using CNC grinders for machining, polishing machines and polishing waxes for polishing, so as to improve the finish of the finished product.
4. Quality inspection: due to the particularity of the surface modeling, the quality inspection is difficult. The solution is to use non-contact measurement technology and equipment such as 3D scanners to make accurate measurements, while strengthening quality control in the production process to ensure the quality of the finished product.
The manufacturing process of UHPC curtain wall panels with curved surface modeling has high technical difficulty and complexity, and all links in the production process need to be strictly controlled. By optimizing the process of mold making, pouring and vibration, surface processing and polishing, and strengthening quality inspection and monitoring, the quality and performance of the finished product can be effectively improved, and better products and services can be provided for the field of building curtain wall.