Concrete structures on track and field facilities are typically small in size and spread out across the site. Before pouring concrete, it's essential to prepare the construction area thoroughly. This includes ensuring that access roads are clear, power supply systems are fully functional, electric gates are properly installed, and vibration equipment is ready for use. These preparations help ensure a smooth and efficient pouring process.
When transporting concrete, it should be placed in sealed vehicles, ideally using concrete mixers to maintain its consistency. The pouring process should begin from the lowest point, such as the bottom of an obstacle pool, and proceed in layers. The first layer should not exceed 40 cm in height. After pouring, the concrete must be compacted using a vibrator. The distance between vibrators should not exceed 1.5 times their working radius. Care must be taken to avoid hitting the formwork or allowing rebar to come into contact with the sides. The vibrators should be kept 50 to 100 mm away from the formwork, and they should be inserted into the lower layer by 50 to 100 mm. When using the vibrator, it should be lifted slowly to prevent air voids from forming. Each section must be fully vibrated until the concrete stops sinking, bubbles stop rising, and the surface becomes smooth. It’s important to avoid leaving the vibrator in one spot for too long, as this can cause separation of mortar and aggregate within the concrete.
Once poured, the concrete must be properly cured to prevent cracking caused by temperature changes, wind, or direct sunlight. Curing methods such as water spraying or covering with curing compounds should be used as needed.
During the pouring process, a dedicated staff member should be present to monitor the concrete work and address any issues that may arise. This ensures quality control and helps maintain the structural integrity of the finished product.
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